Jobs

We are seeking a Firmware Engineer to contribute to the design and development of embedded firmware for our advanced DC/DC power conversion ICs.
In this role, you will create control firmware for a family of MCU-based digital power
controllers for various DC/DC power supply topologies. This will enable real-time control,
configuration, and communication with external systems through serial protocols such as
I2C, PMBus and UART.
If you have a strong foundation in embedded systems programming and are eager to learn
and grow your skills, we’d love to hear from you!

Responsibilities:
As part of this role, you will:
— Write and test embedded firmware for power IC applications using C.
— Implement real-time control and configuration firmware for embedded systems.
— Interface with serial communication protocols such as I2C, PMBus, and UART.
— FW development for peripherals such as ADC, DAC, and communication interfaces.
— Assist in debugging and validating embedded firmware with mixed-signal hardware in
a lab environment.
— Collaborate with hardware and software engineers to ensure seamless functionality.
— Create and maintain documentation, including feature descriptions, user guides, and
firmware design specifications.
— Contribute new ideas for firmware improvements and participate in code reviews to
maintain quality standards.

Qualifications:

— You are a hands-on engineer with a strong interest in embedded firmware development.
You are best equipped for this role if you have:
— BS or MS in Electrical Engineering, Computer Science, or related field.
— 4+ years of experience in embedded firmware development.
— Proficiency in C programming for embedded systems.
— Familiarity with serial communication protocols such as I2C, UART, or PMBus.
— Basic understanding of mixed-signal systems (combining analog and digital
components).
— Lab experience for debugging firmware with hardware circuits.
— Familiarity with version control systems (e.g., GIT) and debugging tools like JTAG.- Strong problem-solving skills and the ability to work in a collaborative team
environment.
— Good written and verbal communication skills in English language.

Preferred Skills (Nice to Have):
— Know-how and experience in DCDC power conversion systems.
— Experience with version control systems like GIT.
— Proficiency with JTAG debuggers and debugging firmware systems.
— Familiarity with bare-metal, RTOS environments, and device drivers.
— Programming experience with Python.
— Expertise in serial communication protocols such as I2C, PMBus, and UART.
— Experience with bug tracking systems like JIRA.

Qail Labs Inc | Remote 

We're building the infrastructure layer for agent-driven commerce. Qail.ai detects AI agent intent on ecommerce sites and streamlines the buying flow so agents (ChatGPT, Claude, Perplexity, custom shopping agents) can transact reliably on behalf of their users. We need an engineer who has shipped real ecommerce systems — ideally on Shopify — and can own the backend, real-time detection pipeline, and merchant-facing infrastructure.

What you'll do 

Design and ship the systems that sit between AI agents and ecommerce storefronts. Build the agent detection and intent classification pipeline — identifying agent traffic in real time, distinguishing browse from buy intent, and routing requests through agent-optimized flows. Own the backend API that Shopify merchants integrate with, the data storage layer, and the integration surface across Shopify (and adjacent platforms). Build and maintain the Next.js merchant dashboard. Scale from pilot deployments to production traffic across thousands of stores.

Must have

• Hands-on ecommerce engineering experience — you've built and operated production systems on a real storefront, not just adjacent to one
• Deep Shopify experience: Storefront API, Admin API, GraphQL, App Bridge, checkout extensibility, theme app extensions, webhooks, and the realities of operating a Shopify app at scale (rate limits, API versioning, partner/app review)
• Solid grasp of the ecommerce data model — products, variants, inventory, carts, checkouts, orders, fulfillments, discounts, taxes
• Python (FastAPI or similar async framework)
• Designing and operating high-throughput, low-latency APIs in production
• Docker / Docker Compose on bare metal or cloud (Hetzner, AWS, etc.)
• PostgreSQL and Redis
• Comfort working with HTTP internals — headers, fingerprinting signals, session state, edge/CDN behavior
• Browser automation (Playwright, Puppeteer, or Selenium) for simulating agent flows, end-to-end testing, and reproducing merchant scenarios

Strong plus

• Shipped and maintained a public Shopify App (or significant private/custom app work for a DTC brand)
• Checkout and payments depth — Shop Pay, Stripe, tokenized checkout, Shopify Functions
• Experience with other commerce platforms (WooCommerce, BigCommerce, Salesforce Commerce Cloud, custom headless stacks)
• Real-time request classification or detection systems (bot detection, fraud, traffic analysis)
• LLM API integration (OpenAI, Anthropic, Gemini, DeepSeek) and structured-output / tool-use patterns
• Familiarity with emerging agent commerce standards (ACP, AP2, MCP for commerce, agent-readable storefronts)

• Next.js / React for merchant-facing dashboards

   

How we work 

Small team, milestone-based delivery with live demos. You'll work directly with the founder. We move fast and ship weekly.

Compensation 

Competitive, based on experience. Contract starting immediately with path to ongoing engagement.

ML Research Engineer
c3 - Kyiv (on-site) - Full-time - Equity Potential

c3 is a London-based software startup opening an office in Kyiv to carry out deep research and development within ML/CV/Time Series

A lot of what we are working on relates to time series modelling - market prediction, bots etc. Similarly, if you have experience within ML/CV for the defence sector, this would be a plus.

We are building a spatial intelligence data layer. We are capturing a number of datapoints about a physical space at a point in time, and outputting deep insights. 

The output is structured intelligence derived from physical reality - not
from what people say about it, not from documents describing it, but from direct measurement of it over time.

One patent filed. Two more in preparation. We are not yet public about
the application. You will find out in the room.

This is a startup early-stage team role. For the next six months we will be working out the architecture together. After that we build the team out around what we have decided.

What the technical problem looks like:

You have LiDAR point clouds of the same physical space captured at different points in time. You need to: align them robustly across varying scan conditions, detect and classify what changed between them at element level using spatial context from the 3D model, compute a rate of change, and project it forward with calibrated uncertainty. You also need to design a training data pipeline that bootstraps a condition assessment model from heterogeneous sources - some structured, some not - before your own capture pipeline reaches sufficient volume.

The output feeds a downstream intelligence model whose architecture you will also help design. None of this is off the shelf. You build it from
first principles with access to real-world data from day one.

What we are looking for:

You have produced serious work in one or more of: computer vision, 3D reconstruction, SLAM, spatial ML, or time series modelling on
physical systems (financial markets or other).

Production instinct. You know the difference between a result and a system. You know when a classical method is the right choice and when it is not. You have built things that ran outside a notebook.

Startup disposition. You have either founded something, been early at
something, or have thought seriously about why now is the moment. 

You are not looking for a job. You are looking for a problem worth the next several years.

Kyiv. You are here or you want to be. This role is on-site. We have an
office. The reason is simple: the architecture decisions we need to make in the next six months happen on a whiteboard, not over Slack. Hybrid work acceptable, not fully remote.

The stack is not fixed - you will help decide it. Likely Python,
PyTorch, point cloud processing, a structured data layer.

Compensation: competitive Kyiv-market salary and potential for meaningful equity. Funded through an operating business backed with London-based capital. No runway risk.

You can check our website here: https://c3.report

Look forward to speaking with you.

We are looking for a Senior DevOps Engineer to design, build, and operate scalable, highly available infrastructure on AWS. This role is primarily focused on AWS-native container platforms, while also requiring hands-on Kubernetes experience for hybrid workloads, tooling, and platform support.

Experience Level

• 5+ years of professional experience in DevOps, SRE, or cloud infrastructure roles
• 3+ years of hands-on experience operating production workloads on AWS

What You’ll Do

• Design and manage AWS infrastructure using Terraform
• Build and maintain CI/CD pipelines using Jenkins and GitHub Actions
• Deploy, operate, and scale containerized applications using AWS-native container services, including: 
  • Amazon ECS and ECS on Fargate
  • Amazon ECR
  • Application and Network Load Balancers
• Configure and tune autoscaling, high availability, and fault-tolerant architectures
• Work with Kubernetes environments, including cluster-level operations and local cluster setup for development
• Support and improve local developer build environments
• Ensure production systems are reliable, secure, and observable

What We’re Looking For

• Strong hands-on experience with AWS and Infrastructure as Code (Terraform)
• Production experience running containers on ECS and/or Fargate
• Hands-on experience with Kubernetes, including working with clusters in production or development environments
• Solid understanding of autoscaling, redundancy, and resilient system design
• CI/CD expertise with Jenkins and GitHub Actions
• Strong Linux, networking, and troubleshooting skills

Nice to Have

• Experience operating EKS or hybrid ECS/Kubernetes environments
• GitOps or deployment automation experience
• Familiarity with AWS observability and cost-optimization tooling
• AWS certifications

• Project Description:

  Our client is a leading global Financial market data provider who runs a number of change programs to deliver high-quality software that connects Financial Markets across the globe in a real-time, high-frequency, and low-latency data management chain. The projects are technically challenging in an environment that is very engaging.
  
  We are looking for a QA Engineer with experience in testing backend systems and services running under Linux, with capabilities to collaborate in a team-focused environment and coordinate work with BA, Dev, Operational, and cross-functional application teams.

• Responsibilities:

  • Own QA activities incl. manual, and performance testing
  • Configuration or re-confirmation of test appliances and environments
  • Report and track the status of issues in Jira along with keeping up-to-date documentation in Confluence
  • Solve problems and evaluate bugs and weaknesses before the software is released to the production environment.
  • Work with colleagues in various areas in order to facilitate end-to-end testing
  • Coordinate work with BA, Dev, Operational, and cross-functional application teams to resolve data quality, integration and performance issues.

• Mandatory Skills Description:

  The role requires a solid foundation in software development and testing, demonstrated by at least three years of relevant experience. Candidates should have a thorough understanding of the formal software development lifecycle, with practical expertise in both manual and automated testing methodologies and tools. Familiarity with multiple operating systems, including Linux, AWS, and Windows, is essential. Additionally, a strong grasp of TCP/IP and UDP Multicast fundamentals, coupled with problem-solving capabilities, will be applied to diagnose and resolve network-related issues.
  
  Hard skills:
  - Proficient in software development lifecycle processes
  - Skilled in manual and automated testing techniques and tools
  - Experienced with Linux, AWS, and Windows environments
  - Knowledgeable in TCP/IP and UDP Multicast concepts and troubleshooting
  
  Soft skills:
  - Strong analytical thinking for problem identification and resolution
  - Effective interpersonal abilities to collaborate and communicate within teams
  - Fluent Upper Intermediate level of English for clear communication

• Nice-to-Have Skills Description:

  - Knowledge of market data: Understanding of market data concepts and applications is advantageous.
  - Experience in simulator/trading systems: Familiarity with trading platforms and simulation environments is beneficial.
  - Knowledge of scripting languages such as Python, Unix shell, or PowerShell: Proficiency in these scripting languages is preferable.

• Languages:
  • English: B2 Upper Intermediate

At Promova, we’re redefining language education for the AI-powered era — making learning accessible, personal, and inspiring for millions of people worldwide. Our 150+ teammates unite around one mission: to connect people, bridge cultures, and empower lifelong learners — in every country except aggressor states (yes, even Antarctica).

We blend AI innovation with human creativity to help people speak with confidence and truly belong anywhere. If you want to test bold ideas, move fast, and make an impact — you’ll feel right at home.

About the Role

Promova is scaling fast, and we’re hiring a Head of Growth to build and own our funnels across web and mobile — from creative, to landing, to the first in-app experience.
 

You’re here to make it one story: one consistent journey for every learner, from first ad to first paid lesson — and one system we can test, scale, and grow ROMI-positively.

We consider funnels as revenue streams — every funnel is a creative angle paired with a dedicated path your team owns end-to-end, from click to retention.

Why This Role Is Worth Your Next Challenge

• The infrastructure is already there. Claude integrations, marketing auto-rules, bulk campaign setup, creative agents, and more — already running today, not on a roadmap. Not built from scratch, but built to scale.
• Funnels you can spin up by prompt. Our AI-driven workflows generate new funnel templates in 15 minutes. So “what if we tried a new flow?” can become a live test now, not months later. No engineering queue, no design backlog. Just test it.
• Direct line to product. Acquisition and R&D work in shared squads — you can ship changes to onboarding, paywall, and creative within the same sprint, not next quarter’s roadmap.

Your Main Focus

• Full funnel ownership. Own the path from creative to landing to the first in-app experience — across web and mobile. Build new funnels, optimize existing ones, and scale what works.
• Experimentation system. Define what “good experimentation” looks like at Promova: hypothesis → prioritization → launch → learning → playbook.
• Creative × UAM × growth alignment. Build a shared context across creative, UAM, and product, so every funnel ships with consistent messaging, metrics, and post-click experience.

What We’re Looking For

• 3+ years in Growth / Product / Product Marketing, with at least 1 year in a leadership role.
• Hands-on experience owning B2C subscription funnels (web and/or mobile) — from creative to purchase, including onboarding and retention.
• Strong analytics chops — experience with funnel and journey analysis, cohort analysis, incrementality testing, A/B testing, attribution models, and working with product analytics tools.

Corporate Benefits

🎓 Growth — offered to help develop your skills, advance your career, and reach your full potential: compensation for additional training at external events and seminars; access to a large electronic library; paid online courses and conferences.

🧘🏼 Wellbeing — offered to support your overall health, happiness, and resilience: work remotely from any safe location worldwide; flexible work schedule; 20 paid vacation days per year; an unlimited number of sick days; medical insurance coverage; mental health support; power station reimbursement; employee discounts and special benefits for remote employees.

🏄🏼‍♂️ Fun & Activities — offered to foster informal communication and strengthen social connections among teammates: remote team compensation for gatherings and team-building activities.

Interview Process

• Intro call with the Recruiter
• Meeting with the Hiring Manager
• Test Case (optional)
• Bar-raising interview

Ready to scale? Let’s connect!

About Us

We are a fast-growing digital advertising technology company that has developed an innovative tool connecting to streaming platforms via API, primarily Twitch but compatible with other streaming services. Our technology enables advertisers to overlay interactive ad banners on streamers' video content, creating new possibilities for audience engagement. We're looking for a talented Business Development Manager to drive our expansion strategy and cultivate valuable client relationships with streamers, advertisers, and platforms.

Responsibilities

• Identify and pursue new business opportunities within the streaming advertising market, with a focus on Tier 1 and Tier 2 markets
• Build and maintain strong relationships with advertisers, streamers, esports organizations, and other content creators across various streaming platforms
• Develop partnerships with brands looking to reach streaming audiences through interactive advertising
• Fully manage clients as an account manager (support, consulting, request processing)
• Conduct regular upsells to existing clients, increase average order value and extend contracts
• Actively work towards achieving KPIs of acquiring 10 medium-sized clients in the first 6 months
• Negotiate and close contracts for advertising services, ensuring optimal terms for the company
• Conduct market research to identify industry trends, competitor activities, and potential partnership opportunities
• Collaborate with cross-functional teams (sales, marketing, product) to deliver comprehensive advertising solutions
• Prepare and deliver compelling presentations, proposals, and reports to clients and stakeholders
• Achieve and exceed sales targets and KPIs
• Stay updated on digital advertising developments, ensuring the company remains competitive
• Represent the company at industry events, conferences, and networking opportunities

Requirements

• Proven experience (3+ years) in business development, sales, or a related role
• Essential: Experience in selling digital advertising solutions on the publisher side or within an advertising agency
• Experience working as an account manager and conducting successful upsells to existing clients
• Strong understanding of digital advertising ecosystem, particularly in live streaming and interactive media
• Knowledge of streaming platforms (Twitch and others), influencer marketing, and the streaming content landscape is highly desirable
• Excellent negotiation, communication, and presentation skills
• Proven ability to close deals and achieve sales targets
• Experience with media planning, audience targeting, and advertising campaign optimization
• Proficiency in sales funnel software and Google Office Suite
• Understanding of advertising metrics, analytics, and reporting
• Ability to work independently and as part of a team
• English fluency required; additional languages are a plus

What We Offer

• Opportunity to work with a dynamic team in a rapidly growing company
• Competitive compensation package with performance-based incentives
• Professional development and rapid career growth opportunities with transition to a sales department head position upon achieving KPIs within 6 months
• Prospect of forming your own sales and business development team
• Access to cutting-edge marketing technologies and tools
• Collaborative and innovative work environment

If you're passionate about digital advertising, have a proven track record in business development, and want to be part of an innovative team transforming the digital marketing landscape, we want to hear from you!

Umbrelly.Cloud - a platform which help companies reduce AWS, Google Cloud, and Azure billing.

About the Role

We’re looking for a B2B Sales Manager who knows how to take warm leads (people already interested in our product) and confidently close them and won new clients.

Key info regarding vacancy: 
- We offer candidates base salary + one-time bonus for each closed deal.
- It's possible to get lifetime comission instead of one-time bonus for each closed deal after 1 year working in the company, and systematically closing new deals. 
- That is strictly hybrid format of work: 2 days offline, 3 days remote in Poland. 

What You’ll Do

• Appointment Setting: Engage & work with leads who positively replies from Email & LinkedIn to book a demo. 
  - You don't need to configure outreach, we already have a team and system which works.
  - No cold-calling required, only demos with clients who booked a demo.
• Closing: Negotiate terms and close deals with a clear, results-first approach.
  - first 2 months personal onboarding and handling demos from a C-level 
  - CRM history which will help to learn & understand how to close deals
  - already closed 100+ B2B customers

• CRM: Use CRM & our own set of automations to keep up to date info regarding sales pipeline

   

Requirements

• English: Fluent-Advanced level, enough to make live demos & meetings with customers. 
• Proven success in B2B sales.

• Strong deal-closing mindset.

   

About Umbrelly.Cloud

• $500k raised, 100+ B2B clients, and MRR growth of 400% in just 2 years.
• Engaged motivated team working together to achieve goals.
• A culture that values results, collaboration, and enjoying the journey. 🌍✨
• Competitive compensation, both base salary & uncapped bonuses for closing deals. 
   

If you’re a confident closer who wants to join a fast-scaling company , let’s talk.

E-Commerce Growth Lead (Remote / Full-Time)
Park Ave Appliance

Park Ave Appliance is a growing online appliance retailer looking for one strong operator to own and execute our entire e-commerce marketing engine end-to-end.

This is not a team management role. You’ll be the primary marketing operator, working independently while coordinating directly with ownership, development, merchandising, and email marketing.

We are looking for someone highly analytical, hands-on, and performance-driven — someone who understands how to grow profitable e-commerce revenue.

What You’ll Own

• Paid acquisition across Google (Search, Shopping, Performance Max, YouTube) and Meta (Facebook/Instagram)
• Full promotional execution across all channels:
  • Google Shopping
  • Meta campaigns
  • website banners
  • landing pages
  • email campaigns
  • rebate and holiday promotions
• Ensuring promotions launch in sync across digital advertising, retargeting/email campaigns, website messaging, and social channels
• Conversion tracking setup and maintenance:
  • GA4
  • Google Tag Manager
  • Meta Pixel
  • Conversions API
  • call/text tracking
• Product feed optimization and Google Merchant Center management
• Coordinating with developers and merchandisers to execute promotions, landing pages, tracking, and on-site updates
• Improving conversion rate, retargeting, abandoned cart flows, and lifecycle marketing
• Monitoring attribution, campaign profitability, and overall marketing performance

Required Experience & Skills

Shopify Experience (Required)

You must have hands-on Shopify experience.

You should understand how to:

• set up and troubleshoot tracking within Shopify
• pull and analyze Shopify reports
• work with apps and native Shopify functionality relevant to marketing operations
• collaborate effectively with developers and merchandisers on implementation, troubleshooting, and promotional execution

Product Feed & Google Merchant Center Expertise (Critical)

This is extremely important for appliance e-commerce.

You should be highly comfortable with:

• product feeds and feed optimization
• Google Merchant Center
• custom labels
• GTINs and MPNs
• promotional feeds
• supplemental feeds
• shipping settings and labels
• exclusions and feed segmentation
• policy violations and disapprovals
• crawl/indexing behavior
• troubleshooting Shopping feed visibility issues

Additional Requirements

• 5+ years of hands-on performance marketing experience
• Proven success growing revenue for an e-commerce company
• Strong analytical and attribution skills
• Ability to optimize for phone and text conversions, not just online purchases
• Comfortable using AI tools to improve workflow efficiency, research, creative production, and execution
• Strong communication and organizational skills
• Able to work independently and take ownership

Compensation

• Competitive salary based on experience
• Performance-based bonus opportunities
• Fully remote position

To Apply

Please send:

1. Your resume
2. A short 1-minute video introducing yourself and your background
3. A brief explanation of why you believe you’re a strong fit for this role

Please include specific examples of e-commerce brands or accounts you’ve helped grow.

Looking for talent who thrive establishing new technologies and the challenges that come with that.

This is development and go live of an entirely new platform and offering in the agriculture space working with big Ag manufacturers and data.

AI-powered parts discovery for agricultural equipment.

You'll Own:

• Product detail pages (PDPs) with rich metadata display
• Backlog for new web deployment
• AI-powered search and discovery UI
• Category administration interfaces for staff
• SEO optimization and Google Search Console integration

Stack: Next.js, React, Vercel, TypeScript

Must Have:

• 3+ years JavaScript/TypeScript
• React/Next.js experience
• Strong CSS/responsive design skills
• SEO fundamentals

Nice to Have: Ecommerce UI experience, search UX, Tailwind CSS

We are looking for a heavy-hitting Senior Project Manager / PMO to orchestrate our operational delivery and bridge the gap between strategy and execution.
This is a pivotal role where you will manage the executive team's task flow, streamline cross-departmental communication, and build a world-class delivery engine for our Tech and Creative teams.

🧩 What you’ll do

• Executive Delivery Management: Manage the executive team’s task backlog, ensuring every initiative is prioritized according to the company’s strategic goals;
• Tech & Creative Synergy: Design, implement, and maintain efficient workflows for Technical and Creative departments. Your goal is to standardize delivery and eliminate bottlenecks;
• Strategic Reporting: Organize high-level meetings, prepare progress reports for founders, and ensure transparency across all key milestones;
• Cross-departmental Orchestration: Act as the central nervous system of the company, ensuring seamless communication between Product, Art, Tech, and Marketing;
• Process Optimization: Audit existing processes and implement best practices to improve overall operational efficiency.

🧠 What you bring

• Experience: Minimum 5 years in Project Management, with at least 3 years specifically in the iGaming industry in a PMO or Senior PM role;
• Methodology Expert: Deep practical knowledge of Agile, Scrum, and Kanban. Ability to choose and adapt the right framework to the team’s needs rather than following it blindly;
• iGaming Expertise: Deep understanding of the slot development lifecycle (from math and art to integration and launch);
• Proven Track Record: Concrete examples and metrics of how you’ve improved delivery speed, optimized team performance, or successfully launched complex projects;
• Stakeholder Management: Exceptional ability to manage expectations of founders and C-level executives;
• Language: Advanced English;
• Tool Mastery: as a plus: experience with ClickUp (automations, dashboards, workload management).

🎁 Benefits

• 21 vacation days + 5 day-offs
• 12 paid sick days
• Flexible schedule (08:00–11:00 CET start)
• Fully remote or Poland-based
• Insurance + fitness budget
• Equipment provided
• Fast startup environment, minimal bureaucracy
• Salary payout format flexibility
• Extra perks after break-even

We are looking for a Senior Node.js Developer (Highload) with experience in blockchain/Web3 products and distributed backend systems.

The role involves designing and building scalable event-driven services that process large volumes of blockchain, financial, and system events while remaining stable under real-world production workloads, traffic spikes, RPC failures, and asynchronous processing challenges.

Responsibilities

• Design and build backend systems for high-load Web3 products, including services that process large volumes of blockchain, financial, user, and system events.

• Own independent components end-to-end: from technical design and implementation to deployment, observability, support, and continuous improvement.

• Build event-driven systems using message brokers, queues, streams, and asynchronous processing patterns.

• Design services that remain stable under traffic spikes, degraded external dependencies, blockchain network instability, delayed confirmations, RPC failures, and other real-world failure scenarios.

• Work with multi-tenant architectures, including tenant isolation, data separation, configuration management, access control, scalability, and operational safety.

• Participate in architectural decisions and challenge weak, risky, or overcomplicated solutions when needed.

• Identify technical risks early and propose practical mitigation strategies before they become production issues.

• Build monitoring, tracing, alerting, and observability mechanisms that help the team understand system health, detect regressions, and trace issues to their origin.

• Work closely with engineering, DevOps, product, and security teams to align technical decisions with product and operational requirements.

• Review code, architecture proposals, and implementation approaches across the team.

• Support other engineers with technical direction, design decisions, debugging, and production-readiness reviews.

• Maintain relevant technical documentation, including architecture notes, integration flows, operational runbooks, and critical system behavior.

• Use AI coding assistants and agents responsibly to improve delivery speed without creating cognitive debt, hidden complexity, or low-quality code that the team cannot maintain.

Requirements

• 5+ years of professional software engineering experience.

• Strong backend engineering experience with TypeScript/JavaScript in production systems.

• Proven experience working on Web3 or blockchain-related products.

• Experience with high-load systems, preferably in exchanges, trading platforms, wallets, blockchain infrastructure, indexers, payment systems, or other event-heavy Web3 products.

• Hands-on experience with EVM-compatible networks, Web3.js, Ethers.js, or similar libraries.

• Practical understanding of smart contracts, blockchain transactions, confirmations, indexing, RPC providers, reorgs, gas mechanics, and common failure modes of blockchain integrations.

• Experience designing and operating event-driven systems.

• Experience with message brokers, queues, or streaming platforms such as NATS, RabbitMQ, Kafka, or similar technologies.

• Experience building systems that handle traffic spikes, bursty workloads, retries, backpressure, rate limits, partial failures, and delayed processing.

• Experience with multi-tenant systems, including tenant-specific configuration, isolation boundaries, access control, data modeling, and operational safety.

• Strong experience with PostgreSQL, SQL schema design, query optimization, indexing strategies, migrations, and data consistency.

• Experience with ORMs, including understanding when to use them and when direct SQL is a better choice.

• Experience writing automated tests for critical business logic, integrations, and system behavior.

• Ability to reason about architecture trade-offs, failure scenarios, data consistency, scalability, and operational complexity.

• Ability to work with AI assistants and coding agents in a controlled, reviewable, and engineering-safe way.

• Working English sufficient for technical discussions, documentation, and async communication.

Will be a plus

• Experience with Go, Rust, Zig, or C++.

• Experience with exchanges, trading systems, payment systems, fintech platforms, or other financial high-load products.

• Experience with Layer 2 networks, rollups, zk systems, bridges, sequencers, provers, or blockchain node infrastructure.

• Understanding of consensus algorithms, cryptography basics, decentralized applications, and blockchain infrastructure design.

• Experience helping teams make architectural decisions, challenge questionable assumptions, and keep project direction technically sound.

• Experience designing systems where observability is treated as part of the architecture, not as an afterthought.

We offer

• Competitive compensation

• Social package (24 working days of annual leave, 5 paid sick days)

• Flexible working hours

• Challenging projects in diverse business domains and a variety of tech stacks

• Personal development and professional growth opportunities

• Work with talented, ambitious and family-feel teams

• Educational possibilities: corporate courses, knowledge hubs, and in-house English classes

• Compensation for your professional certification & support for your learning activities

• Opportunity to choose IT equipment you like

• Corporate social responsibility

We are looking for a Senior Python Engineer to join our team. The primary focus will be on building and maintaining high-performance, scalable, and secure applications for the Healthcare domain. Our team contributes to the development of a specialized ecosystem of services from scratch to support and optimize Health Information Exchange (HISP) workflows.

Responsibilities:

• Design, develop, test, and maintain applications and services.
• Write clean, efficient, and maintainable code following best practices and coding standards.
• Optimize applications for performance, scalability, and security.
• Troubleshoot, debug, and resolve technical issues.
• Communicate with internal product owners and stakeholders
• Document technical solutions and maintain up-to-date system knowledge.

Requirements:

• Python (4+years) - Flask, Gunicorn, pytest; production microservices, async patterns
• GCP - Cloud Run, Cloud Workflows, Cloud Tasks, GCS, BigQuery, Pub/Sub, Secrets Manager, Google Healthcare API
• Scripting - Typescript, Next.js
• Terraform for GCP infrastructure-as-code
• AI-Assisted Coding

Good to have:

• FHIR
• PostgreSQL
• Redis
• Docker, GKE
• Healthcare Domain Knowledge - FHIR, HL7 C-CDA and CCD Parsing, NLP pipelines
• React.js, Tailwind CSS
• Java - Spring, Spring Boot, Hibernate

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

N-iX is looking for a skilled Python Engineer to join our team. The primary focus will be on building and maintaining high-performance, scalable, and secure applications for the Healthcare domain. 

Responsibilities

• Design, develop, test, and maintain applications and services.
• Write clean, efficient, and maintainable code following best practices and coding standards.
• Optimize applications for performance, scalability, and security.
• Troubleshoot, debug, and resolve technical issues.
• Communicate with internal product owners and stakeholders
• Document technical solutions and maintain up-to-date system knowledge.

Requirements

• Python (3+years) - Flask, Gunicorn, pytest; production microservices, async patterns
• GCP - Cloud Run, Cloud Workflows, Cloud Tasks, GCS, BigQuery, Pub/Sub, Secrets Manager, Google Healthcare API
• Scripting - Typescript, Next.js
• Terraform for GCP infrastructure-as-code
• AI-Assisted Coding

Nice to have

• FHIR
• PostgreSQL
• Redis
• Docker, GKE
• Healthcare Domain Knowledge - FHIR, HL7 C-CDA and CCD Parsing, NLP pipelines
• React.js, Tailwind CSS
• Java - Spring, Spring Boot, Hibernate

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

United Tech is a global IT product company shaping the future of real-time social connection. With millions of users across North America, Europe, LATAM, and MENA, we build next-gen mobile and web apps for live-streaming and social networking. Our platforms enable connection at scale fast, interactive, and deeply engaging. The market is projected to exceed $206B by 2030, and we are already leading the evolution. Founded in Ukraine, scaling worldwide.

About your role: In this role, you will combine creativity and analytics from working with top-tier influencers in LATAM to negotiating international partnerships across Tier-1 markets. You will have access to modern tools like Tableau, Appsflyer, and AI-powered solutions, while collaborating daily with UAM, product, design, and growth experts. With high budgets, clear KPIs, and a culture that values bold ideas, this is your chance to grow as a strategist, manager, and creator,  and see the real impact of your campaigns at scale. Are you in?

In this role, you will

• Search for and engage relevant influencers, content creators, and brand ambassadors aligned with business goals
• Manage influencer marketing campaigns end-to-end: from outreach and launch to performance analysis and optimization
• Create briefs, scripts, and campaign concepts together with Creative and Growth teams
• Coordinate content production processes, including UGC sourcing, timelines, deliverables, and approvals
• Build and maintain long-term relationships with influencers, creators, agencies, and brand ambassadors
• Develop and execute influencer marketing strategies based on business objectives and performance insights
• Track campaign performance, lead generation, and content effectiveness, providing data-driven recommendations
• Manage budgets, creator payments, contracts, and usage rights documentation
• Collaborate closely with User Acquisition, Creative, and Growth teams to ensure content relevance and performance impact

It’s all about you

• At least 1 year of experience in Account Management, Operations, Marketing, or other communication-focused roles aimed at covering business needs
• Hands-on experience working with the LatAm market
• Proven track record of building and managing partnerships with measurable business results
• Strong communication and presentation skills in both English and Spanish (B2+)
• Ability to manage content production processes from idea to final delivery
• Strategic mindset with strong organizational and analytical skills
• Experience working with tools such as HypeAuditor, Brandwatch, Google Analytics, or similar platforms
• Ability to effectively manage multiple projects, priorities, budgets, and partnerships simultaneously

Would be a plus

• User Acquisition background with understanding of UA strategies and performance-driven marketing approaches
• Experience working with mobile apps, including web-to-app or web-to-web conversion flows
• Hands-on experience with tools such as Modash, Google Analytics, CRM platforms, or similar solutions

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

Hiring process

• Intro call
• Interview with Hiring Managers
• Test Task
• Final Interview
• Reference check 
• Offer