Jobs

🚀 Hi! Welcome to Megafair — an international startup provider in the skill-based and slot iGaming niche, where excitement meets intellectual challenge. We create high-quality, innovative gaming products that set new industry standards and captivate players worldwide.

With a truly global team, we work across multiple markets, blending creativity, technology, and expertise to deliver exceptional gaming experiences. Our vision is bold, and our plans are big — this is your chance to join us from the ground up and grow together with a fast-scaling startup.

If you’re ready to be part of a team where every idea matters, challenges inspire, and achievements are celebrated, Megafair is the place to make your mark.
 

REQUIREMENTS

• 3+ years of commercial experience as a Game Mathematician or in a similar role within the online gambling industry;
• Strong understanding of various slot mechanics and game design principles;
• Exceptional attention to detail with the ability to identify and resolve even minor errors in mathematical models;
• Proven ability to solve abstract and highly complex mathematical problems;
• Data-driven and analytical approach to decision-making;
• Experience working in cross-functional teams and collaborative environments;

• B1+ English level.

   

WILL BE A PLUS

• Experience in game development, close collaboration with game development teams.

   

WE OFFER

• Compensation: competitive salary;
• Tech tools: modern technical equipment;
• Time Off: 20 vacation days, 10 sick days annually;
• Work-Life Balance: flexible remote, options without time tracking;
• Language Learning: reimbursement for foreign language courses;
• Support network: work with a team you can learn from and every day;
• Diversity: we pride ourselves on our international working environment;
• Power supply: compensation for electricity, power banks, generator fuel, etc.;
• Professional Growth: emphasis on internal promotions for career advancement.
   

RESPONSIBILITIES

• Design and refine engaging slot math models and mechanics in collaboration with the Product Team;
• Develop server-side implementations for testing and game integration;
• Run simulations to validate math models and benchmark against portfolio targets;
• Conduct competitive analysis to extract valuable insights;
• Assess risk and calculate win probabilities for player investigations;
• Rapidly prototype mechanics to test and validate ideas;
• Participate in the full game development lifecycle;
• Collaborate with developers, providing clear math specifications.
   

CANDIDATE JOURNEY

Interview with a recruiter - Interview with Team - Interview with C-level - Job offer

AI-First Project Manager / Operations (German application users/customers)
 

We're a startup that moves fast, runs several projects at once, and uses AI tools everywhere we can. We work with large, established German companies, and we're looking for someone to help keep everything moving internally.
 

What you'd do:

• Turn quick discussions from meetings into clear tickets for developers.
• Check that what developers deliver actually meets the goal.
• Use AI tools (Claude, ChatGPT, Gemini) to work faster: drafting tickets, reviewing work, bulk-editing tasks.
• Keep track of many moving projects at once and switch between them smoothly.
• Pick up the mix of operational tasks that come with an early-stage startup.
   

You're a good fit if you:

• Are highly organized and detail-oriented, but can hold the big picture in your head.
• Love using AI to make your own work faster.
• Learn fast and become the go-to person on new topics quickly.
• Have strong written and reading German (B2 or above) — a lot of the work involves managing German-language data. Our team works in English day to day, so spoken fluency isn't required.
• Can occasionally travel to Berlin to meet the team.

We start with a paid trial project so both sides can check the fit, then move to full time.

Apply here and we will get back to you within 3 business days.

Description

Our client is developing an advanced industrial asset intelligence platform engineered to drive digital aftermarket transformation and equipment lifecycle monetization. The system integrates edge hardware telemetry, on-premise production software, cloud data warehouses, and generative AI to deliver a unified real-time asset tracking, service optimization, and aftermarket commerce experience for factory operators, field service engineers, and distributors.
The platform architecture centers on a full-stack cloud ecosystem anchored by an Angular 19 frontend, C# 12 .NET 8 microservices, Python FastAPI AI components, Snowflake data warehousing, Azure SQL Managed Instance, Azure OpenAI GPT-4 GenAI diagnostic tools, Azure AI Search, Shopify eCommerce integration, and Azure API Management.
The engineering initiative focuses on defining the overarching end-to-end system architecture, driving the convergence of OT machine telemetry (FitLive) with IT production software (HCSS) and enterprise ERP systems (SAP), architecting high-throughput data pipelines, establishing scalable multi-tenant domain models, and guiding the technical roadmap to deliver high availability and resilient system performance.

Requirements

• 10+ years of experience in enterprise software engineering and cloud solution architecture, with a specialized focus on large-scale industrial or digital platform ecosystems.
• Strong proficiency in multi-tier system design, microservices architecture (.NET 8, C#, Python FastAPI), and modern web frontend frameworks (Angular 19).
• Deep expertise in Microsoft Azure cloud architecture, serverless compute, container orchestration, and Infrastructure as Code (Terraform, AzureRM).
• Proven experience in enterprise data architecture, designing hybrid data models across relational databases (Azure SQL MI), data warehouses (Snowflake), object storage (Azure Blob), and cache layers (Redis).
• Expert-level knowledge of system integration patterns, RESTful APIs, messaging brokers (Azure Service Bus), API gateways (Azure API Management), and third-party platform integrations (Shopify, SAP).
• Solid background in AI system architecture, including RAG-based Generative AI workflows (Azure OpenAI GPT-4), semantic search engines (Azure AI Search), and Knowledge Graph implementations.
• Practical experience in cloud security architecture, identity federation (Azure Entra External ID), zero-trust models, and regulatory compliance governance.
• Solid understanding of IT/OT hardware convergence, real-time telemetry ingestion pipelines, predictive maintenance models, and edge-to-cloud data bridging.
• Self-organized personality with outstanding executive communication, technical leadership, and decision-making skills across cross-functional engineering teams and technical stakeholders.

Job responsibilities

• Define the global end-to-end solution architecture for the platform, ensuring seamless alignment between business strategy, functional capabilities, and technical execution.
• Architect complex system integrations across disparate data sources, bridging OT edge telemetry (FitLive), factory-floor IT systems (HCSS), cloud services, and enterprise ERP systems.
• Design high-throughput, low-latency data ingestion pipelines and unified canonical data models across Snowflake, Azure SQL MI, and asynchronous event streams.
• Formulate technical strategies for Generative AI integration, Knowledge Graph structures, Document Intelligence manual parsing, and predictive analytics microservices.
• Establish architectural governance, non-functional requirements (NFRs), security frameworks, multi-tenant isolation rules, and disaster recovery strategies across active cloud environments.
• Evaluate emerging technologies, conduct technical feasibility assessments, build proof-of-concept (PoC) architectures, and guide technical build-versus-buy decisions.
• Enforce cloud engineering best practices, reviewing microservice contracts, database schemas, API management policies, and IaC deployment patterns.
• Deliver technical leadership to domain architects, engineering leads, and DevOps teams, while serving as the primary technical advisor to product management and client stakeholders.

We are looking for a Senior UA Manager (Google Ads) to own and scale our Google Ads big monthly budget, drive 2-3x growth in scale while keeping CPA and ROAS within target, and shape the testing roadmap across creatives, audiences, and bidding strategies together with our Creative and Product Marketing teams. This is a role for someone who thrives on data, owns outcomes end-to-end, and wants their decisions to directly move the needle for a product reaching hundreds of thousands of users worldwide
 

About our product: We are building one of the most powerful live-streaming platforms, already connecting 400K+ monthly active users through live events, interactive video chats, and real-time community experiences. Our mission is bold: bring joy, fight loneliness, and deliver safe, ad-free entertainment that keeps people coming back. This is a complex, fast-moving space, and we love it that way! So, you will join a passionate, expert team tackling everything from scaling AI-powered recommendations to launching high-impact, data-driven features that boost monetization and engagement. Every idea counts here, and every release reaches a massive global audience. We are among the Top 5 streaming products in the US and rank in the Top 10 worldwide. Our next milestone: break into the global Top 5, and we are moving fast to make it happen. Are you in?
 

In this role, you will

• Own and manage traffic acquisition in Google Ads (App campaigns/UAC and Web/PMax/Search), from hypothesis testing to scaling
• Scale the Google Ads direction 2-3x from the current budget while staying within defined KPIs (CPA/ROAS/ROMI)
• Build and execute a testing roadmap covering creatives, audiences, keywords/signals, and budget strategies, selecting optimal placements for each campaign type
• Build and optimize test structures and scaling rules and criteria for campaigns, monitoring CPA and ROI on a daily basis
• Work closely with Creative and PMM teams to generate and validate new hypotheses specific to Google Ads (app and web)
• Analyze and optimize campaigns based on data (AppsFlyer, Tableau, Google Analytics/Firebase), identifying growth opportunities and risks across different traffic sources (app/web)
   

It's all about you

• 3+ years of experience in performance marketing for mobile apps (video streaming/live/social apps is a plus)
• Hands-on experience buying traffic in Google Ads (Web/Web2app/App campaigns), from launch to scaling 
• Experience managing budgets above $300K per month within the Google channel
• Deep understanding of Google Ads algorithm mechanics (Smart Bidding, tCPA/tROAS, signals)
• Solid knowledge of unit economics, cohort analysis, and key performance metrics (CPA, ROAS, LTV, Retention)
• Experience working with MMPs and attribution (AppsFlyer/Adjust), understanding attribution logic
• Experience with BI tools (Tableau, AppsFlyer, Google Analytics/Firebase) for data-driven analysis and decision-making
• Upper-Intermediate (B2) or higher English proficiency
   

Would be a plus

• Experience with other search networks
• Experience automating campaign launches, testing, and reporting with AI tools (Google Ads API, Google Ads Scripts)
   

What we offer
 

Care and support:

• 20 paid vacation days, 15 sick leave days, and 6 additional days off for family events
• 100% medical insurance coverage
• Sports and equipment reimbursement
• Team building events, corporate gifts, and stylish merch
• Financial and legal support
• Maternity Recovery Support Allowance
• Position retention and support for those who join the Armed Forces of Ukraine
• Participation in social initiatives supporting Ukraine
   

Comfortable working environment:

• Work from our Kyiv hub or remotely with a flexible schedule
• Modern equipment or depreciation of your own tools
   

Investment in your future:

• Collaborate with a highly-skilled team of Middle & Senior professionals, sharing practical cases and expertise in the social networking niche
• 70% of our heads and leads have grown into their roles here – so can you!
• Performance-oriented reviews and Individual Development Plans (IDPs)
• Reimbursement for professional courses and English classes
• Corporate library, book club, and knowledge-sharing events
• AI is an integral part of our work culture. We invest in modern AI tools, equip our teams with the skills to use them effectively, and foster an environment where technology helps people achieve better results faster
   

Hiring process

• Intro call
• Technical interview
• Interview with Direct Manager/Head
• Bar-raising 
• Reference check
• Offer

We are looking for a Senior User Acquisition Manager (Meta/TikTok/Snapchat) to build and own the acquisition direction for one of our live-streaming products, taking full responsibility for TikTok, Meta, and Snapchat and scaling spend 2-3x within 3-6 months while holding CPA and ROAS at target. You will run the testing roadmap across creatives, audiences, and bidding strategies, work hand-in-hand with our Creative and PMM teams, and have direct visibility into growing into the UA Team Lead role as you scale this direction. If you want full ownership over a fast-scaling Social channel and a clear path to leading a team, this is your next challenge.

About our product: We are building one of the most powerful live-streaming platforms, already connecting 400K+ monthly active users through live events, interactive video chats, and real-time community experiences. Our mission is bold: bring joy, fight loneliness, and deliver safe, ad-free entertainment that keeps people coming back. This is a complex, fast-moving space, and we love it that way! So, you will join a passionate, expert team tackling everything from scaling AI-powered recommendations to launching high-impact, data-driven features that boost monetization and engagement. Every idea counts here, and every release reaches a massive global audience. We are among the Top 5 streaming products in the US and rank in the Top 10 worldwide. Our next milestone: break into the global Top 5, and we are moving fast to make it happen. Are you in?

In this role, you will

• Own and manage traffic acquisition on TikTok, Meta, and Snapchat, from hypothesis testing to scaling
• Scale the Social direction within defined KPIs (Spend/CPA/ROI/ROAS)
• Build and execute a testing roadmap covering creatives, audiences, placements, and bidding strategies to improve performance
• Build A/B test structures and scaling rules and criteria for campaigns, monitoring CPA and ROI on a daily basis
• Work closely with Creative and PMM teams to generate and validate new hypotheses tailored to each channel's needs
• Analyze and optimize campaigns based on data (AppsFlyer, Tableau), identifying growth opportunities and risks

• Collaborate directly with network partners (TikTok, Meta, Snapchat) on testing new features, participating in betas, and handling moderation-related communication

   

It's all about you

• 3+ years of experience in performance marketing for mobile apps (video streaming/live/social apps is a plus)
• Hands-on experience buying traffic on TikTok Ads, Meta Ads, and Snapchat Ads, from campaign launch to scaling
• Experience managing budgets above $300K per month across Social channels
• Deep understanding of auction mechanics, bidding strategies, optimization events, and the algorithm principles behind TikTok/Meta/Snap
• Solid knowledge of unit economics, cohort analysis, and key performance metrics (CPA, ROAS, LTV, Retention)
• Experience working with MMPs and attribution (AppsFlyer/Adjust), understanding attribution logic
• Experience with BI tools (Tableau, AppsFlyer) for data-driven analysis and decision-making
• Upper-Intermediate (B2) or higher English proficiency

Would be a plus

• Experience with alternative ad networks
• Experience automating campaign launches, testing, and reporting across networks with AI tools
• Understanding of marketing funnels and performance creative testing principles
• Experience with ASO and influencer marketing as additional channels

What we offer

Care and support:

• 20 paid vacation days, 15 sick leave days, and 6 additional days off for family events
• 100% medical insurance coverage
• Sports and equipment reimbursement
• Team building events, corporate gifts, and stylish merch
• Financial and legal support
• Maternity Recovery Support Allowance
• Position retention and support for those who join the Armed Forces of Ukraine
• Participation in social initiatives supporting Ukraine

Comfortable working environment:

• Work from our Kyiv hub or remotely with a flexible schedule
• Modern equipment or depreciation of your own tools

Investment in your future:

• Collaborate with a highly-skilled team of Middle & Senior professionals, sharing practical cases and expertise in the social networking niche
• 70% of our heads and leads have grown into their roles here – so can you!
• Performance-oriented reviews and Individual Development Plans (IDPs)
• Reimbursement for professional courses and English classes
• Corporate library, book club, and knowledge-sharing events
• AI is an integral part of our work culture. We invest in modern AI tools, equip our teams with the skills to use them effectively, and foster an environment where technology helps people achieve better results faster

Hiring process

• Intro call
• Technical interview
• Interview with Direct Manager/Head
• Bar-raising 
• Reference check
• Offer

Forest AI | Remote (Europe, CET overlap) | ~10% travel | 

## Start: ASAP

Full time preferred, four days works, three is possible. Freelance, permanent or B2B: your choice (freelance day rate discussed separately).

The best developers are now part product manager and part project manager of their own army of AI coding agents. Their job is making sure those agents deliver what the business actually needs, not just what someone wrote in a ticket. In that world the bottleneck isn't producing correct code. It's understanding the business and communicating clearly.

We work Claude Code first. If you don't believe in delivering that way, this isn't the right fit.
 

## About Forest AI

Forest AI helps companies become benchmark-driven in how they build AI agents. AI agent development demands an order of magnitude more testing before release than traditional deterministic software. We build the automated evaluation and testing layer that makes testing at that volume practical, so our customers can put AI into production in places where being wrong is expensive.

## What you'll actually work on 

Your first engagement is with a German insurance venture (name shared in conversation) building an AI-driven B2C insurance value chain, quote, consult and purchase, all AI-driven, going live in September. There is a second track automating their internal insurance operations. It runs like a startup: decisions in-house, no corporate approval loops, ideas become working software the same day.
 

## The role

100% hands-on. You take a vague business need, turn it into a system that works, and keep it working, owning the why, the build and the test without depending on someone else for the biggest chunk of it.
 

• - Pick up signal fast. Hear one sentence mid-meeting, recognise it carries real information about what the business needs, work out what the speaker actually wants, and go deliver it.
  
  - Own outcomes to completion. We drop you into a project, say "automate this manual customer workflow," and three months later it just works, without anyone directing every detail.
  
  - Own customer satisfaction. If the customer doesn't see the ROI, the software gets thrown out. Everyone here writes down why a feature matters to the customer. Sometimes that lands in a presentation. When it doesn't, it lands in the commit message.
  
  - Push the business for clarity. Press for decisions where the right AI behaviour can't be intuited, or where the data to decide it doesn't exist yet.
   

## How we build

TypeScript end to end. Next.js and React on the front, Postgres on Supabase, AWS underneath, an agent framework (we use Mastra, any comparable one is fine), and Langfuse for tracing and evaluation.

Claude Code is the primary build tool, not an accessory. That's the part we care about most.

The specific tools matter far less than how quickly you become productive with them. If you've shipped serious software in another stack and you steer AI agents well, you're in scope.
 

## What we're looking for
 

• - Several years building and running production software real customers depend on: APIs, backend services, data pipelines, and the operational reality of keeping them up.
  
  - A track record of owning a customer-facing build from zero to production, ideally more than once.
  
  - AI-native, hard requirement. Claude Code or Codex as your daily driver.
  
  - Roughly a year of real, hands-on exposure to building LLM-based features in production. Nobody has five years of it. Claiming so is a red flag.
  
  - Strong discipline around automated testing, CI/CD and monitoring. Evaluation and testing are our product, so this matters more here than in most places.
  
  - Real customer-facing time: consulting, forward deployed engineering, founding your own company, or an in-house role where you sat with the business. You've run requirements conversations and can separate the requests that genuinely drive return from the wishes and curiosities that arrive alongside them.
  
  - Pragmatic, solutions-first. No "not in my ticket" reflexes.
  
  - Working language is English. German is a plus, not a requirement. A significant share of the data you'll work with is in German.
   

## Process

1. A call with our CTO.
2. A short practical challenge done with Claude Code or Codex. We grade how you steer the tool, not the outcome.

Two steps, and we move fast.

We’re looking for a Affiliate Manager to grow and scale our affiliate direction in iGaming. In this role, you’ll be responsible for bringing in new partners, onboarding and developing them, and driving performance to meet ambitious acquisition goals — with a strong focus on Tier-1 / Tier-2 GEOs.

What you’ll do:

• Source, attract, negotiate, and onboard new affiliates and partner networks (webmasters, media buyers, agencies, affiliate networks, etc.).
• Build and maintain strong long-term relationships with partners.
• Scale partners and bring them to target ROI through continuous optimization and performance management.
• Work with Tier-1 / Tier-2 GEOs (e.g., DE, GR, ES, NED), with high-risk GEO experience as a plus.
• Analyze traffic quality and performance: monitor key KPIs, work with a wide range of metrics, and detect growth opportunities.
• Develop and test new growth / growth-hacking approaches to scale volumes and improve quality.
• Collaborate closely with Marketing, Analytics, Product, and Tech teams to improve traffic volume, conversion, and quality.
• Represent the company at industry events, conferences, and online/offline meetups to expand your network and bring in new partners.

What we’re looking for (Must-have):

• 3+ years of experience as an Affiliate Manager in iGaming / gambling.
• Strong analytical mindset and confidence working with numbers, KPIs, and performance metrics.
• Ownership and proactivity: you take responsibility, move fast, and drive outcomes.
• A “test-and-learn” mentality and genuine interest in continuous growth-hacking.
• English level B2 or higher (for partner communication).
• Seniority level: Mid–Senior (ability to operate independently and own a direction).

Nice to have:

• Your own network / partner base in Tier-1 / Tier-2, especially SEO, PPC, and influencer partners.
• Experience with True Label or SoftSwiss brands/platforms.
• Hands-on experience with Affilka or similar tracking tools.
• Experience working with high-risk GEOs.

Success metrics:

• 1000+ FTD/month in Tier-1 by the end of probation, driven through affiliate acquisition, activation, and scaling with a clear ROI focus.

Why join us:

• High-impact role with ownership over a core growth channel.
• Fast-paced environment where your ideas and experiments are encouraged.
• Cross-functional collaboration with Marketing, Analytics, Product, and Tech.
• Opportunity to grow into a strong leader within the team.

How We Take Care of Our Team?

Comfortable Conditions for Productive Work
Flexible working hours with a start time between 8:00 AM and 11:00 AM. Work remotely from anywhere in the world or join us in our modern Cyprus office — the choice is yours.

Time to Recharge
We believe great results come from well-rested people. That’s why we offer:
21 days of paid annual leave;
3 additional Day Offs per year;
25 paid sick leave days;
Public holidays as days off.

Benefits & Wellbeing
Sports compensation program;
Annual healthcare budget;
Gifts for important life events (birthday, marriage, childbirth);
Coworking compensation for team members based in Ukraine;
Maternity and paternity leave support;
Business trips and team gatherings at our Cyprus office.

Learning & Career Growth
Annual budget for professional development, certifications, books, and language courses;
Internal mobility and promotion programs to support both vertical and horizontal career growth;
A Personal Development Plan to help you grow your skills and competencies.

Smooth Onboarding & Ongoing Support
We’ve designed a structured onboarding plan to help you quickly understand the business, the team, and your priorities. Regular check-ins with your manager and People Partner ensure a smooth adaptation process and continuous support throughout your journey with us.

We are looking for a talented Middle strong C++ Developer with 3.5+ years of programming background to make consistent, high-quality code contributions to a mature, high-performance C++ product in the energy commodities trading domain.
This is not a from-scratch build — you’ll be joining a live, production trading system where every millisecond counts, with real opportunity to influence the technical direction of a core part of the platform.

JOB REQUIREMENTS:
Must have:

• 3.5+ years of professional experience in software development
• Deep expertise in Modern C++ (17/20/23): move semantics, constexpr, templates, etc.
• Strong experience with Linux / POSIX environments
• Proficiency with build systems and tools: CMake / vcpkg, Git
• Hands-on experience with concurrency and shared memory tools
• Networking skills: ZeroMQ (or similar), low-level socket programming (TCP/UDP)
• Proficiency in using AI coding tools (Cursor, Claude, Codex, etc.) to enhance the development workflow
• English: Upper-Intermediate or Advanced

Nice to have:

• Experience with Svelte
• Familiarity with kdb+, TypeScript, and code generation tools
• Experience in Financial or Trading domains (FIX Protocol, OMS, market data feeds like ITCH/OUCH)
• Knowledge of Redis or other in-memory data stores
• Familiarity with the Qt framework
• Team lead experience (optional, not required)

WHAT WE ARE LOOKING FOR:

• Autonomy: You excel at working independently, learning on your own, and figuring out large, unfamiliar codebases without external support.
• Ownership: You are ready to take full responsibility for the core part of the system.
• Assertiveness: You can clearly communicate your technical vision and demonstrate your project understanding effectively.

PROJECT
Customer: Global company based in the US, serving large international clients.
Type: Fintech / trading platform
Product: A live, high-performance market order and trading system designed as an exchange for energy commodities. The platform connects global buyers and sellers of specialized commodities, providing trading, data insights, and market infrastructure used by large enterprises, financial institutions, and government agencies.
Market: Global — primarily US and European markets, serving corporations, financial institutions, and governments across multiple regions.
Stage: Existing, established platform. The Markets Engineering team is expanding internationally.
Project team: C++ and UI developers (team of 4-6), reporting to a Lead C++ Engineer. [confirm exact composition with HM]
Technical stack: Modern C++ (17/20/23), Linux/POSIX, CMake, vcpkg, Git, ZeroMQ, shared memory, TCP/UDP sockets; Svelte, TypeScript, kdb+, Redis, Qt (adjacent/nice to have)
Work schedule: Full-time working day, fully remote.
Key achievements:

• Large international customer with a portfolio of large international clients
• Real opportunity to set the direction for a mature product

INTERVIEW STAGES:

1. Intro call with recruiter
2. Technical interview (TechMagic)
3. Client test task
4. Interview with Hiring manager
5. Client interview

We're looking for an Email Infrastructure & Deliverability Engineer to own the systems that send email at scale for a fast-growing ecommerce lifecycle marketing platform — covering behavioral tracking, personalization, and email/SMS automation.

In this role, you'll own the entire email sending infrastructure — from queues and scheduling through delivery, feedback processing, and reputation management across a multi-tenant environment.

This is a great opportunity for someone with deep backend infrastructure experience and real email deliverability expertise who enjoys owning critical systems end-to-end, protecting sender reputation at scale, and working autonomously in a small, high-ownership team.

Your responsibilities will include:

• Build and operate high-throughput email sending services, queues, and workers
• Implement retries, backpressure, prioritization, rate limits, and adaptive throttling
• Manage shared and dedicated IP pools, domain reputation, warm-up, and traffic routing
• Build domain onboarding for SPF, DKIM, DMARC, return-path, and tracking domains
• Process bounces, complaints, unsubscribes, suppressions, and ISP feedback loops
• Monitor throughput, queue latency, deferrals, bounce rates, complaints, and reputation signals
• Create automated guardrails that throttle, pause, reroute, or block unsafe sending
• Diagnose production issues across SMTP, DNS, providers, queues, and mailbox providers
• Own your systems end to end, including observability and incident response

What we expect from you:

• Strong backend or infrastructure engineering experience
• Production experience building or operating high-volume email systems, ideally at an ESP or marketing automation platform
• Deep knowledge of SMTP, bounces, complaints, deferrals, throttling, and mailbox-provider behavior
• Hands-on experience managing sender reputation across domains and IP pools
• Strong knowledge of SPF, DKIM, DMARC, DNS, domain alignment, and custom sending domains
• Experience with queues, distributed workers, idempotency, rate limiting, SQL, and Redis
• Ability to diagnose blocklists, spam complaints, authentication failures, and reputation changes
• Understanding of how list quality, engagement, spam traps, and customer abuse affect deliverability
• Clear communication and the ability to work autonomously in a small team

Nice to have:

• Experience at an ESP such as Klaviyo, Mailchimp, Braze, Iterable, SendGrid, Mailgun, or Customer.io
• Experience with Amazon SES or MTAs such as Postfix, Haraka, or PowerMTA
• Familiarity with Google Postmaster Tools, Microsoft SNDS/JMRP, feedback loops, and blocklist monitoring
• Experience with Go, Node.js/TypeScript, Kafka, Pub/Sub, Kubernetes, or Prometheus
• Experience using AI coding tools such as Claude Code or Codex

What we offer:

• Interesting project and technical challenges that support both professional and personal growth.
• A long-term project with stability and impact.
• A flexible, results-oriented schedule with hybrid or remote work options.
• A comfortable, modern office in Kyiv with generator and battery backup.
• Competitive salary, medical insurance, and a supportive onboarding/trial period.
• Team-building events, including parties, online activities, picnics, and more.
• The opportunity to work in a Top Employer company (DOU 2025).

The role is based in Kyiv, and we will expect you to work full-time in the office. 

About the Job

As an Embedded Software Engineer you are a key part of our Architecture team to develop and implement the core features and functionalities to have our drones operate safely and autonomously in the air.
Together with our world-class team, currently seven team members, you will take an empowering role: pushing the boundaries of drone technologies. You will be working closely with stakeholders in Germany and US from the System architecture and Hardware development departments.

What is your Day to Day Mission:

• Implementation, maintenance, and optimization of the Quantum-Systems autopilot firmware and firmware stack
• Design, Conception, implementation, and testing of new autopilot functionalities
• Export of flight control and navigation algorithms from Matlab / Simulink and integration into the autopilot’s embedded framework
• Implementation, maintenance, and optimization of BSP / peripheral and external sensor drivers and their optimized operation in the scope of the real-time operating system
• Building, documenting, and maintaining autopilot firmware for flight tests. Creation of flight test tickets, support of flight tests, and post-flight data analysis
• Creating unit tests, debugging/tracing of the code base for code coverage/functionality testing
• Maintenance of the firmware update eco system, including bootloaders & firmware updates
• Support in the implementation and maintenance of production tools

What you bring to the team:

• You have completed a degree in the field of bachelor’s or master’s degree in software engineering / electrical engineering and you have several years of experience working with embedded systems.
• You have a deep understanding of embedded systems and you are a senior in designing, implementing and optimizing embedded systems.
• You have strong knowledge of microcontrollers (ARM, Cortex-M), real-time operating systems and hardware and communication interfaces  interfaces (UART, I2C, SPI, CAN, ETH ...)
• You are experienced with real-time operating systems like FreeRTOS or uCOS II and knowledge of multi-threading, task scheduling, and inter-task communication.
• You have the ability to bridge the gap between hardware and software, understanding the electrical and physical constraints, profound understanding of electronic schematics and efficiently utilizing available hardware resources
• You master version control and collaboration tools such as git and gitlab and you have experience in working in collaborative development environments with agile methodologies.
• You are highly self-motivated and drive your area of responsibility independently
• Due to your open, communicative, friendly, and competent attitude, it is easy for you to be considered as an internal expert
• English level at least B2

Why Quantum-Systems:

• We Stand with Ukraine
• We believe in the power of combined efforts: straightforward tech expertise paired with a customer-centric focus.
• We are industry pioneers who are ambitious, bold, and visionary.
• We push limits, think outside the box, and strive for technological excellence to shape the future of aerial data.

• We promise to be your runway for individual and professional growth.

   

About us:

Quantum Systems specialises in the development, design, and production of small Unmanned Aerial Systems (sUAS). The company’s range of electric vertical take-off and landing (eVTOL) sUAS are built to maximize range and versatility and to provide operators with a seamless user experience. By integrating cutting-edge software capabilities, like edge computing and real-time AI-powered data processing, Quantum Systems is building next-generation UAS for clients in defence, security, public sectors.

Meet the YozmaTech

YozmaTech isn’t just another tech company — we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster.
We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact.
Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family — you’ll feel right at home with us.

Our client is looking for a Senior Full Stack Engineer with strong expertise across both frontend and backend, a passion for building scalable, high-quality products, and proven ability to handle end-to-end feature development.

In this role, you’ll play a key part in advancing our web architecture, improving system performance, and enhancing the overall development standards of our platform. You’ll work on complex real-time products, helping shape fast, reliable, and user-friendly experiences.

If you enjoy solving technical challenges, working with modern technologies, and creating clean, efficient solutions — we’d love to connect.

This role offers the opportunity to make a direct impact on product quality, technical decisions, and overall platform growth within a fast-moving and collaborative environment.

Key Requirements:
🔹 Solid backend fundamentals 7+ years — API design, data flow management, and building scalable systems with Python as a must-have and Node.js considered a strong plus.
🔹 5+ years of software engineering experience, with strong frontend expertise in modern JavaScript frameworks (React, Angular, Vue), TypeScript, and modern build tools (Vite, Next.js, SWC);
🔹 Proven experience improving frontend architecture and scaling web applications;
🔹 Strong understanding of TypeScript, build tools (Webpack, Vite), and browser APIs;
🔹 Hands-on experience with AI tools such as Cursor, Claude, and ChatGPT
🔹 Product-oriented mindset with strong attention to UX, quality, and maintainability;
🔹 Strong communication skills and the ability to work effectively in cross-functional teams;
🔹 English — Upper-Intermediate or higher.

What you will do:
🔹 Drive frontend improvements by introducing better development practices, tools, and modern technologies;
🔹 Design and develop scalable, high-performance web applications using React and modern frontend frameworks;
🔹 Take ownership of features from planning to production, including technical design, implementation, and optimization;
🔹 Work closely with Product, Design, and engineering teams to deliver smooth and intuitive user experiences;
🔹 Support backend development in Python to ensure strong integration across the full product stack;
🔹 Improve development processes, code quality, testing, and overall engineering efficiency;
🔹 Focus on performance, reliability, and maintainability across the platform;
🔹 Participation in the on-call rotation (On-call responsibilities are not required initially but may become part of the role over time).

Interview stages:
🔹 HR Interview
🔹 Intro Call
🔹 Technical Interview
🔹 Final Interview
🔹 Reference Check
🔹 Offer

Why Join Us?

At YozmaTech, we’re self-starters who grow together. Every day, we tackle real challenges for real products — and have fun doing it. We work globally, think entrepreneurially, and support each other like family. We invest in your growth and care about your voice. With us, you’ll always know what you’re working on and why it matters.
From day one, you’ll get:
🔹 Direct access to clients and meaningful products;
🔹 Flexibility to work remotely or from our offices;
🔹 A-team colleagues and a zero-bureaucracy culture;
🔹 Opportunities to grow, lead, and make your mark.

After you apply

We’ll keep it respectful, clear, and personal from start to offer.
You’ll always know what project you’re joining — and how you can grow with us.

Everyone’s welcome

Diversity makes us better. We create a space where you can thrive as you are.

Ready to build something meaningful?

Let’s talk. Your next big adventure might just start here.

Hi! We’re Applyft, a product IT company building mobile and web solutions for millions of users. Starting our path with Geozilla, we’ve grown into an ecosystem of 6 products. Our portfolio spans across several niches: Family Safety, Parental control and AI Spheres.

We’re looking for a Growth Product Lead to strengthen our Product team and drive the global scaling of our products. This is a high-impact leadership role — you’ll own product development across the entire company portfolio and lead a cross-functional team of Product Managers, Designers, and CRM Managers.

You’re a great fit if you have:

• 3+ years in PMM / PdM / Growth Product roles, with proven experience leading a team or function
• Strong skills in task-setting and communication with dev and design teams
• Deep, hands-on experience with A/B testing
• Analytical skills (Amplitude / Tableau / Looker or similar)
• A track record in CRO optimization
• Real experience with monetization, unit economics, subscriptions, and billing models (pricing, offers, upsells) — and a data-driven mindset to match
• Solid understanding of mobile app and web industry trends, onboarding best practices, and web-to-web / web-to-app funnels
• Experience hiring and onboarding PMM/product specialists
• A history of standardizing and scaling processes for a PMM function across multiple products

Will be a plus:

• Experience launching projects from scratch to full delivery (especially in marketing)
• Additional experience in marketing, product, or analytics
• Understanding of release and store-review processes
• Experience managing PMM work across several products/units in parallel

What you’ll do:

• Strategic vision for the PMM function across all products — partnering closely with Growth Managers to align PMM strategy with unit growth goals
• Backlog ownership, from idea to launch, with sharp prioritization
• Market research and identifying (then implementing) the monetization models that actually move the needle
• Deep-dive work with analytics, metrics, and financial performance
• Cross-functional collaboration to scale products within their category
• Hiring and onboarding new PMM talent
• Running regular team checkpoints, offering hands-on technical support, and sharing your lead-level expertise
• Driving alignment across and within teams
• Building and standardizing processes for the PMM function
• Leading training and knowledge-sharing initiatives, both within the team and beyond

We offer:

• Remote-First culture: We provide a flexible working schedule and you can work anywhere in the world.
• Health taking care program: We provide Health insurance, mental health support (psychologist compensation), sport compensation, and 20 paid sick days.
• Personal Equipment Policy: We provide all necessary equipment for your work. For Ukrainian employees we also provide Ecoflow.
• Vacation Policy: Each employee in our company has 20 paid vacation days and extra days on the occasion of special events.
• Knowledge sharing: We are glad to share our knowledge and experience in our internal events.
• English Lessons: We provide corporate English lessons to support your professional and personal growth.
• Professional Development: Annual learning budget for courses, training, certifications, and conferences.
• Public Holidays: You receive days off according to the official public holidays of your country of residence.
• Coworking Compensation (Ukraine): We provide coworking space compensation for employees located in Ukraine.

Hiring process:
Recruitment Screen 👉Tech interview 👉 Final interview 👉Reference check 👉 Job Offer

YozmaTech isn’t just another tech company – we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster.
We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact.
Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family – you’ll feel right at home with us.

Our client is a fast-growing, six-year-old, cloud-native SaaS company with approximately 90 employees worldwide. They deliver the world’s first unified Secrets & Machine Identity platform — trusted by Fortune 100 companies and industry leaders. The platform integrates Vaultless Secrets Management, Certificate Lifecycle Management, Next-Gen Privileged Access Management (Secure Remote Access), and Encryption Key Management to secure and manage the entire lifecycle of both machine-to-machine and human identities across all environments. Backed by leading cybersecurity investors and financial institutions, our client is redefining identity security for the modern enterprise.

We are seeking a Senior Technical Support / DevOps Engineer with strong hands-on expertise, a deep understanding of infrastructure and systems, and proven customer-facing experience.

Key Requirements:

Technical Expertise:
🔹 Strong hands-on experience with Kubernetes (cluster internals, networking, namespaces, pod communication, troubleshooting);
🔹 Solid knowledge of Docker and containerized environments;
🔹 Advanced Linux system administration skills;
🔹 Practical experience with AWS (GCP is a plus);
🔹 Strong understanding of networking concepts (cloud & on-prem);
🔹 Experience with certificate lifecycle management, encryption, and key management;
🔹 Strong troubleshooting skills in distributed systems;
🔹 Experience with CI/CD pipelines and DevOps practices;
🔹 Scripting skills (Python and/or Bash);
🔹 Understanding of security fundamentals (authentication, authorization, encryption);
🔹 English – Upper-Intermediate or higher.

Preferred Qualifications:
🔹 Experience with Terraform and/or Ansible;
🔹 Familiarity with GCP;
🔹 Experience with Windows administration;

Support & Customer-Facing Experience:
🔹 Proven experience in L3 (or higher) technical support;
🔹 Ability to perform live troubleshooting with customers;
🔹 Experience working with ticketing systems;
🔹 Strong communication skills with the ability to explain complex technical issues clearly;
🔹 Experience supporting enterprise/B2B customers;
🔹 Ownership mindset (incident management, escalation, RCA);

Documentation:
🔹 Ability to create and maintain knowledge base articles, runbooks, and SOPs;

What you will do:
🔹 Troubleshoot and resolve complex issues in customer environments related to Kubernetes clusters, including networking, namespace management, pod deployment, and cluster internals;
🔹 Diagnose and fix problems with Docker containers and deployments;
🔹 Provide advanced Linux system administration support; assist with Windows environments as needed;
🔹 Support customers with certificate lifecycle management, including installation, renewal, and troubleshooting of SSL/TLS certificates and key management;
🔹 Analyze and resolve networking issues within Kubernetes clusters and cloud infrastructures;
🔹 Assist customers with cloud infrastructure setup and troubleshooting, primarily on AWS and GCP;
🔹 Perform live troubleshooting sessions with customers to identify root causes and resolve incidents in real time;
🔹 Document solutions, create and update internal knowledge base articles, runbooks, and SOPs;
🔹 Automate support and operational tasks using tools like Terraform, Ansible, or Python;
🔹 Continuously learn and test new product features in a lab environment to be prepared for customer inquiries;
🔹 Collaborate with the international team (primarily Israeli colleagues) for onboarding, knowledge sharing, and escalation of complex issues;

Interview stages:
🔹 HR Interview;
🔹 Technical Interview;
🔹 Home Assignment;
🔹 Assignment Review;
🔹 Reference Check;
🔹 Offer;

Role Overview

We are seeking a high-caliber Senior RF Systems Engineer to lead the development of next-generation situational awareness and electronic warfare (EW) platforms. You will be responsible for the full lifecycle of RF subsystems, from initial research (TRL 1) to field-tested operational prototypes (TRL 7+). Your work will directly impact projects such as autonomous drone detection, FHSS signal classification, and distributed SIGINT mesh networks.

Key Responsibilities

RF Design & Integration

• Design and optimize RF front-ends for unmanned aerial systems (UAVs) and ground-based detection stations.
• Develop hardware and firmware for high-speed FHSS (Frequency Hopping Spread Spectrum) detection and mitigation.
• Architect and implement Mesh Networking protocols for distributed sensor arrays (e.g., FPV-borne SIGINT mesh).

Signal Intelligence (SIGINT) & Electronic Warfare

• Develop algorithms for passive RF geolocation and signal classification.
• Engineer solutions for Drone Detection, focusing on identifying digital and analogue transmitting signatures even under heavy jamming.
• Design and test spoofing detection systems for Galileo and GPS navigation.

Field Validation & Testing

• Lead field testing of RF prototypes in relevant operational environments to validate TRL exit criteria.
• Analyze battlefield RF signatures to refine "kill zones" and improve EW training simulators.
• Collaborate with the software team to integrate RF data into C2 (Command and Control) dashboards.

Technical Requirements

SDR Mastery

Expert proficiency with Software Defined Radio platforms (HackRF, BladeRF, Ettus USRP) and GNU Radio.

Signal Processing

Deep understanding of digital modulation (OFDM, FSK), FFT analysis, and hopping pattern reconstruction.

Hardware

Experience with PCB layout for RF applications (up to 6GHz), antenna design, and impedance matching.

Frequency Bands

Experience working across 300–600 MHz (FHSS), 2.4 GHz, and 5.8 GHz bands.

Tools

Proficiency in MATLAB/Simulink, Python, or C++ for real-time signal analysis.

• Proven experience with SAW (Surface Acoustic Wave) filters and LNA (Low-Noise Amplifier) design/integration.

Preferred Qualifications

• Knowledge of FPGA development for low-latency signal processing (Verilog/VHDL).
• Background in military-grade communication protocols and LPI/LPD (Low Probability of Intercept/Detection) systems.

Logistics & Impact

• Location: Kyiv (Hybrid/Field testing required).

About us

Ruby Labs is a leading tech company that creates and operates innovative consumer products. We offer a diverse range of opportunities across the health, education, and entertainment industries. Our innovative teams are driving the future of consumer-led products, and we're always looking for passionate individuals to join us. Learn more about our story at: https://rubylabs.com/about-us/

About the role

We are seeking a Billing Data Analyst to join our Billing and Data team. You will play a key role in analyzing financial performance, billing behavior, risk trends, and support operations. Your work will help drive better decision-making, reduce financial risks, and improve billing efficiency across all products. This role combines analytical rigor, statistical thinking, and cross-functional collaboration.

Key Responsibilities

• Monitor, analyze, and report on key billing and support performance indicators and emerging trends.
• Build and maintain data pipelines to ensure accurate, timely, and reliable data delivery.
• Apply statistical methods to project scenarios, assess “what-if” outcomes, and anticipate financial risks.
• Run A/B tests and experiments to evaluate billing and support strategies.
• Collaborate with cross-functional teams (Billing, Support, Finance, Product, Marketing) to align processes with risk-mitigation goals.
• Analyze the impact of marketing and product changes on billing outcomes, risk behavior, and customer support metrics.
• Provide actionable recommendations to improve billing performance and reduce disputes, churn, and operational inefficiencies.
• Document analyses, workflows, and data logic to ensure clarity and consistency.

Qualifications

• Bachelor’s degree in Data Science, Statistics, Computer Science, Economics, or a related field.
• Experience as a Data Analyst, ideally within fintech, subscription products, billing, or customer support.
• Strong SQL skills.
• Experience with popular BI tools such as Tableau, Looker, or similar
• Experience with Python or R
• Solid understanding of statistical analysis, forecasting, and scenario modeling.
• Experience running A/B tests and interpreting experiment results.
• Excellent problem-solving skills, attention to detail, and ability to work in a fast-paced environment.
• Strong communication skills, with the ability to explain findings to both technical and non-technical stakeholders.
• Curiosity, ownership mindset, and the discipline to maintain high-quality data work.

Nice to have

• Experience with BigQuery, ClickHouse, or any cloud data warehouse.
• Basic Python knowledge for data cleaning or simple analysis.
• Exposure to subscription businesses or payment systems.
• Understanding of disputes, chargebacks, declines, or fraud signals.
• Familiarity with DBT or data quality frameworks.

Location

Ruby Labs operates within the CET (Central European Time) zone. Applicants from any country are welcome to apply for the position as long as they are located within approximately ± 4 hours of CET. This ensures optimal collaboration and communication during working hours.

Benefits

Discover the perks of being part of our vibrant team! We offer:

• Remote Work Environment: Embrace the freedom to work from anywhere, anytime, promoting a healthy work-life balance.
• Unlimited PTO: Enjoy unlimited paid time off to recharge and prioritize your well-being, without counting days.
• Paid National Holidays: Celebrate and relax on national holidays with paid time off to unwind and recharge.
• Company-provided MacBook: Experience seamless productivity with top-notch Apple MacBooks provided to all employees who need them.
• Flexible Independent Contractor Agreement: Unlock the benefits of flexibility, autonomy, and entrepreneurial opportunities. Benefit from tax advantages, networking opportunities, reduced employment obligations, and the freedom to work from anywhere. Read more about it here: https://docs.google.com/document/d/1nkrN76JlZkbKj9WSOhlT1_mni_CZeDkHdwfIjPXVwvk/preview?tab=t.0

Be part of our fast-growing team and seize this excellent opportunity for personal and professional growth!

Interview Process

After submitting your application, we conduct a thorough review which typically takes 3 to 5 days, but may occasionally take longer due to the volume of applications received. If we see a potential fit, we proceed with the following steps:

• Recruiter Screening (40 minutes)
• Technical Interview (60 minutes)
• Final Interview (30 minutes)

Life at Ruby Labs

At Ruby Labs, we move fast, aim high, and expect the same from our team. We’re not here to play small—we’re here to build, grow, and win. That means we look for people who are ambitious, driven, and ready to give their best every single day.

This is a place for individuals who thrive under pressure, embrace challenges, and see opportunity in every obstacle. If you’re hungry to achieve, motivated by impact, and want to grow at the speed of your own ambition, Ruby Labs offers the platform to make it happen.

Here, effort is matched with reward. We recognize those who go all in and deliver results, and we create space for people who want more—more responsibility, more growth, and more success.