Jobs at Djinni

About the role

We build ClassOwl (classowl.com), a modular school management platform (SIS/LMS/ERP) used by Swiss schools. Our users are teachers, school administrators, and parents - smart people who are not power users and have no patience for clunky software. Your job is to make a genuinely complex product feel simple: reduce workflows to their essentials, design multiple intuitive entry points into the same functionality, and make sure a first-time user succeeds without training or a manual. We are a team of around 15 people across Ukraine and Switzerland -small enough that your work is visible everywhere, stable enough for a long-term perspective. You will own design end-to-end, working directly with the founder and a senior product/engineering team.

What you will do

• Redesign and simplify complex workflows (grading, absences, scheduling, billing, communication) into clear, low-friction user journeys.
• Design for non-technical users first: progressive disclosure, sensible defaults, forgiving error handling, and multiple paths to the same task (search, dashboard shortcuts, contextual actions). Close collaboration with our Business analysts.
• Produce wireframes, high-fidelity UI, and interactive prototypes in Figma; maintain and extend our design system across web and mobile.
• Run lightweight user research and usability tests with real teachers and administrators; turn findings into concrete design decisions.

• Work hands-on with developers to ensure pixel-accurate, pragmatic implementation  and know when to compromise.

   

What we are looking for

• 3+ years of product design experience, with at least one complex B2B SaaS product (ERP, school management, HR, banking, logistics, or similar data-heavy systems) hard requirement.
• A portfolio that shows simplification: before/after of complicated flows, not just polished visuals.
• Good spoken and written English (B2+) - daily working language with the Swiss team. Ukrainian native/fluent.
• Strong Figma skills, experience with design systems, and solid understanding of responsive web and mobile patterns.
• Equally confident designing for mobile and web  treating each as its own native context rather than stretching one to fit the other.
• Comfortable both designing new features from scratch and reworking or extending already-shipped screens and flows without breaking existing patterns.
• Understanding of the software development lifecycle (SDLC) - how discovery, design, development, QA, and release fit together and comfort working within an agile/sprint-based process alongside engineers.
• Solid information architecture and interaction design skills for complex, data-heavy interfaces and you can structure large amounts of information without overwhelming the user.
• Able to build and maintain a scalable, component-based design system (tokens, variants, clear documentation) rather than one-off screens.
• Product mindset: you ask why a feature exists before designing how it looks, and you challenge unnecessary complexity.
• Understanding German is an instant bonus and salary bump — much of our product and customer communication is in German.

• Nice to have: EdTech experience, accessibility standards (WCAG), motion/interaction design.

   

What we offer

• High ownership: you are the design authority for a product used daily by thousands of students, teachers, and parents.
• Long-term perspective: a stable Swiss company with a multi-year product roadmap, and real opportunities for professional development as the product and team grow.
• Direct access to the founder and to customers - no agency churn, no design-by-committee.
• Competitive compensation, fully remote work within Ukraine, flexible hours.
• Cooperation via your own FOP (ФОП) is preferred — if you don’t have one yet, we will help you set it up.

Join our Security and Compliance group as a Senior Software Engineer, where you'll work with a team of skilled developers on the client's complex core product, utilizing cutting-edge technologies such as Microservices, Spring Boot, Java, Kotlin, Reactive Programming, MongoDB, Neo4j, Kafka, and more.

Role and Responsibilities:
 - Participate in the end-to-end development lifecycle of new features used by thousands of enterprise customers globally.
 - Design, develop, and maintain robust and scalable Java applications.
 - Build and manage REST or GraphQL APIs.
 - Integrate and optimize NoSQL database solutions (e.g., MongoDB, Neo4j).
 - Collaborate with cross-functional teams to define requirements and deliver high-quality solutions.
 - Conduct code reviews to ensure adherence to high-quality standards and best practices.
 - Troubleshoot software issues and optimize performance in customer environments.
 - Engage in the full software development lifecycle, including requirements analysis, design, coding, testing, and deployment.
 - Stay current with emerging technologies and industry trends.
 - Work independently and within an Agile team to design and maintain network security orchestration software solutions.

Requirements:
- 3+ years of professional experience in Java development within a Linux environment.
- 2+ years experience with spring boot framework
- Willingness to code in Kotlin.
- Familiarity with front-end technologies, with an openness to learning frameworks like Angular and Apollo.
- Strong understanding of Spring Boot and experience with NoSQL databases (e.g., MongoDB, Neo4j).
- Proficient in data modeling and designing scalable data architectures.
- Basic knowledge of Docker and Kubernetes.
- Experience with Agile/Scrum development methodologies.
- Strong problem-solving skills, attention to detail, and ability to collaborate effectively.
- Excellent verbal and written English-language communication skills

Nice to have:
Background in networking or security software solutions.
Experience with front-end frameworks, preferably Angular 15+.
Familiarity with DevOps CI/CD methodologies and tools

Must-Have Skills

• Go / Rust / TypeScript — core stack; strong proficiency in at least one, ideally two
• Multithreaded & concurrent programming — critical requirement; proven experience with real parallel systems
• Performance profiling & optimization — CPU/memory management under real production load on dedicated hardware
• Docker & containerization — deploying and managing containerized workloads
• Edge computing / embedded systems — experience building for resource-constrained environments
• Networking & distributed systems — solid fundamentals; building reliable comms between edge and cloud

• Real-time systems — low-latency design and delivery

   

Nice-to-Have Skills

• Video streaming / pipeline development
• Storage systems & data management at the edge
• Cloud services integration (AWS S3, GCP, MQTT, Kafka)
• AI/ML model deployment on edge devices
• Security concepts (encryption, secure communication, zero trust)
• Responsibilities
• Contribute to the core edge platform running across diverse hardware in a hybrid edge-cloud architecture
• Develop and integrate video management capabilities: streaming, recording, real-time AI processing
• Design and optimize for low-latency, high-performance workloads at the edge
• Build secure, efficient communication pipelines between edge devices and cloud systems
• Work with AI/ML engineers to deploy and optimize on-device models
• Own performance under load — profile CPU/memory, identify bottlenecks, fix them
• Participate in code reviews, debugging, and performance tuning across the stack

Movadex Labs is looking for a highly technical Solutions Architect to help design and deploy custom AI systems for enterprise clients. This is not a generic consulting role. You will work at the intersection of business workflows, AI infrastructure, data architecture, agentic systems, and production engineering.

You will work closely with our Business Analyst, product/enterprise design lead, and engineering team to translate messy enterprise needs into clear technical architectures, sandbox environments, implementation plans, and deployable AI solutions.

The ideal person understands how to move from “the client has a workflow problem” to “here is the architecture, data flow, model/tooling layer, security approach, integration plan, and technical execution roadmap.”

What you’ll do

Work with the BA to understand client workflows, internal systems, data sources, approval flows, users, edge cases, and business constraints.

Design technical discovery frameworks and AI sandboxes for enterprise clients, including data ingestion, knowledge layers, vector search/RAG, workflow orchestration, evaluation loops, permissions, observability, and deployment options.

Architect custom agentic systems that can operate across internal documents, structured data, APIs, tools, and human-in-the-loop processes.

Define the right AI infrastructure for each use case: LLM providers, model routing, embeddings, vector databases, orchestration frameworks, retrieval pipelines, eval systems, monitoring, guardrails, and hosting environment.

Create implementation blueprints for engineering teams, including system diagrams, integration maps, API requirements, data requirements, deployment approach, security considerations, and phased delivery plans.

Support enterprise pilots from technical discovery through sandbox build, prototype, production deployment, and post-launch optimization.

Help evaluate whether a workflow should be solved with RAG, fine-tuning, workflow automation, agent orchestration, rules-based logic, traditional software, or a combination of approaches.

Partner with product/design to make sure the AI system is not just technically functional, but actually usable, adoptable, and measurable inside the client’s organization.

Collaborate with engineers during implementation, review architecture decisions, unblock technical issues, and ensure the final system matches the intended design.

Help build reusable internal assets, including reference architectures, agent templates, sandbox environments, evaluation patterns, deployment playbooks, and technical documentation.

What we’re looking for

Strong experience designing production software systems, ideally in enterprise, AI, data, SaaS, automation, or cloud environments.

Deep understanding of modern AI infrastructure: LLM APIs, RAG, embeddings, vector databases, agent frameworks, tool calling, evals, prompt orchestration, model routing, guardrails, observability, and deployment tradeoffs.

Ability to work with messy, ambiguous enterprise requirements and turn them into clear technical plans.

Strong understanding of backend systems, APIs, databases, cloud architecture, authentication, permissions, security, and integration patterns.

Comfortable designing sandbox environments and proof-of-concept systems that can later scale into production.

Ability to communicate clearly with both technical and non-technical stakeholders.

Strong documentation skills: architecture diagrams, technical specs, implementation plans, and engineering handoff materials.

Practical, product-minded thinking. You should know when to use advanced AI infrastructure and when a simpler workflow automation or software solution is the better answer.

Experience with AWS, Azure, or GCP is strongly preferred.

Experience with Python, TypeScript/Node.js, FastAPI, LangChain/LangGraph, LlamaIndex, OpenAI/Anthropic APIs, vector DBs, or similar tools is a strong plus.

You are a strong fit if

You can sit in a client discovery session, understand the business process, ask sharp technical questions, and quickly see what kind of AI system should be built.

You are not just an engineer and not just a consultant. You can bridge strategy, architecture, and implementation.

You understand that enterprise AI is not only about prompts or models. It is about workflows, data readiness, integrations, permissions, evals, adoption, and measurable ROI.

You can design something that engineers can actually build.

About the Position

We are looking for a Shopify-focused Designer & Frontend Developer who enjoys creating engaging ecommerce experiences from the ground up. In this role, you'll be involved throughout the entire project lifecycle - from initial concepts and interface design to implementing fully functional Shopify storefronts, websites, and landing pages for consumer-facing brands.

Responsibilities

• Design and develop Shopify storefronts, marketing websites, landing pages, and end-to-end shopping experiences with a strong focus on conversion.
• Transform concepts, wireframes, and design briefs into responsive, production-ready interfaces.
• Customize, improve, and maintain Shopify themes.
• Create reusable sections, components, and content blocks using Liquid, HTML, CSS, and JavaScript.
• Deliver fast, responsive, and pixel-accurate user experiences across desktop and mobile devices.
• Work closely with Product, Marketing, Growth, and Engineering teams to implement new features and user experiences.
• Investigate and resolve frontend issues while ensuring consistent behavior across modern browsers.
• Keep up with new Shopify capabilities, ecommerce best practices, frontend technologies, and AI-assisted design workflows.

Requirements

• At least 3 years of commercial experience working with Shopify design and frontend development.
• Portfolio demonstrating both ecommerce design work and hands-on Shopify implementation.
• Strong expertise with Shopify, Liquid, HTML5, CSS3/SCSS, and modern JavaScript (ES6 or newer).
• Solid experience building responsive, mobile-first interfaces.
• Advanced proficiency in Figma.
• Hands-on experience with Shopify Online Store 2.0, including Sections, Blocks, Metafields, and Metaobjects.
• Good understanding of UX/UI principles and designing interfaces optimized for user conversion.
• Experience using Git and collaborating within modern development workflows.
• Strong attention to detail, organizational skills, and the ability to work on multiple projects in parallel.

Nice to Have

• Experience working with Shopify Plus.
• Familiarity with Shopify Functions and Checkout Extensibility.
• Knowledge of React, Next.js, or Shopify Hydrogen.
• Experience creating advanced frontend interactions and animations using tools such as GSAP or ScrollTrigger.
• Understanding of Shopify APIs and third-party application integrations.
• Familiarity with analytics platforms such as Google Analytics 4, Hotjar, or Microsoft Clarity.
• Experience running A/B tests and applying conversion rate optimization (CRO) practices.
• Practical experience using AI-powered creative tools for generating visual assets or videos (for example: Higgsfield, Nano Banana, ChatGPT, Midjourney, Runway, Kling, or similar solutions).

Core Technologies & Skills

• Shopify
• Liquid
• HTML5
• CSS / SCSS
• JavaScript (ES6+)
• Figma
• Responsive Web Design
• Shopify Theme Development
• UX/UI Design
• Git
• Frontend Performance Optimization
• AI-powered Image & Video Generation Tools (e.g. Higgsfield, Nano Banana, ChatGPT, Midjourney, Runway)

Role Mission:

We are looking for a senior Machine Learning Engineer who can build and improve ML models used in our product. Most of the tasks are related to computer vision and image processing. You will work on both common tasks like segmentation, detection, and classification, as well as more complex problems involving Diffusion Models, LLMs, VLMs, and other custom tasks without ready-made solutions.

You should be able to work independently, move fast, and quickly test new ideas.

Responsibilities:

• Build and improve ML models, mostly for computer vision tasks.
• Handle the full ML process: collect and prepare data, train and test models, and improve them step by step.
• Work on both standard and new types of problems.
• Create fast prototypes and help turn successful ones into real products.
• Work closely with other teams to bring your models into the product.
   

Requirements:

• 4+ years of real-world experience with ML, including at least 2 years in computer vision.
• Good understanding of how to build ML systems from start to finish.
• Hands-on experience with one or more of these: object detection, segmentation, img2img, generative networks.
• Ability to read, understand, and implement ideas from cutting-edge research papers. You stay current with top conferences (e.g., CVPR, NeurIPS, ICCV) and can turn academic innovations into practical solutions.
• Strong skills in Python and PyTorch.
• Experience optimizing models for efficient inference on local devices (CPU, GPU, NPU), including quantization, pruning, and runtime adaptation.
• Able to work with and explore large datasets.
• Comfortable working on your own and taking full responsibility for your tasks. Experience with prototyping and working in an R&D cycle.
   

Nice to Have

• Experience in research (PhD, papers, or personal projects).
• Experience training or fine-tuning foundational models (LLMs, VLMs).
• Experience training or fine-tuning diffusion models for specific image generation or enhancement tasks.
• Familiarity with classical image processing techniques.
• Experience with deep learning inference frameworks like ONNX Runtime, OpenVINO, Core ML, or others.
• Strong C++ skills, close to your Python level.
• Enjoy building and testing product ideas quickly.

What we offer:

For personal growth:

• A chance to work with a strong team and a unique opportunity to make substantial contributions to our award-winning photo editing tools;
• An educational allowance to ensure that your skills stay sharp;
• English and German classes to strengthen your capabilities and widen your knowledge.

For comfort:

• A great environment where you’ll work with true professionals and amazing colleagues whom you’ll call friends quickly;
• The choice of working remotely or in our office space located on Podil, equipped with everything you might need for productive and comfortable work.

For health:

• Medical insurance;
• Twenty-one days of paid sick leave per year;
• Healthy fruit snacks full of vitamins to keep you energized.

For leisure:

• Twenty-one days of paid vacation per year;
• Fun times at our frequent team-building activities.

What to expect when you apply

• An interview with our Talent Acquisition Specialist
• Professional interview
• Management interview

📍 Remote | iGaming / Crypto 

ABOUT THE COMPANY 

We are an iGaming company with over three years of experience and a team of 1,500+ specialists. Our portfolio includes 11+ successful products operating across Tier 1–3 markets. We actively scale new products and markets, building strong affiliate ecosystems and long-term partnerships. Currently, we are looking for a Streamer & Influencer Lead to own and drive influencer acquisition for one of our fast-growing crypto casino products.

ABOUT THE ROLE 

This is a hands-on, high-ownership role focused on streamers, KOLs, and influencer-driven acquisition. You'll be responsible for building and scaling our streamer pipeline from the ground up — from identifying and vetting talent to negotiating deals and optimizing performance. You're expected to operate independently, move fast, and drive measurable results. 

What you'll do: 

● Own the streamer and influencer acquisition strategy end-to-end ● Identify, vet, and onboard streamers and KOLs across Twitch, Kick, YouTube, X, Telegram and other platforms 

● Negotiate commercial deals and manage ongoing relationships with streamers and influencer partners 

● Monitor streamer performance daily, evaluate traffic quality, and make quick decisions on scaling or offboarding 

● Build and maintain a strong pipeline of active and prospective streamers 

● Test new influencer channels and communities, identify growth opportunities 

● Work closely with CRM, Product, and Design teams to create streamer-specific promotions and creatives 

● Track key metrics: FTD, CPA, re-deposit rate, LTV and payback period per streamer 

What we're looking for: 

● Proven hands-on experience working directly with streamers and KOLs in crypto iGaming or online casino 

● Deep understanding of the streamer ecosystem — Twitch, Kick, YouTube, Telegram communities, X 

● Ability to evaluate streamer audience quality and detect fake engagement or bots 

● Experience negotiating CPA, hybrid, and flat fee deals with streamers 

● Strong understanding of performance metrics: FTD, CPA, re-deposit rate, LTV, payback period 

● Existing network of crypto gambling streamers and influencers is a strong advantage 

● Hands-on mindset — you don't just manage, you execute ● Fluent spoken and written English (required) 

● Based in Europe or Ukraine 

Why you should join us: 

● Remote-first with full autonomy and direct impact on acquisition results 

● Fast-moving startup environment with quick decisions and minimal bureaucracy 

● Opportunity to build the streamer function from scratch in a growing crypto casino 

● Collaboration with experienced iGaming and crypto professionals ● Real growth potential as the product scales

We are looking for a User Acquisition Manager (In-app Networks). This is an opportunity to take ownership of one of the user acquisition channels for one of our flagship, fast-growing products. You will be responsible for launching and scaling campaigns across leading in-app advertising networks, running your own experiments, and shaping the channel's growth strategy. This role is for someone who wants to do more than just manage campaigns—it’s about influencing the direction of the channel, making data-driven decisions, and seeing the direct impact of your work.

You will join a strong User Acquisition team with well-established processes, deep domain expertise, and a collaborative knowledge-sharing culture. You'll work closely with experienced creative marketers, analysts, and designers to rapidly validate hypotheses, identify winning approaches, and scale successful strategies. We give our team the freedom to experiment and grow what works, without artificial limitations on budgets or technical capabilities, so you'll have everything you need to maximize your impact

About the 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 now expanding into Arab countries and Europe, enhancing content quality, and rolling out new features to keep users hooked. 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

• Launch and manage advertising campaigns across ad networks (AppLovin, Moloco, Mintegral, Unity Ads, etc), where we operate as an official partner
• Monitor and optimize campaigns daily against key metrics (CPA, CPI, IPM, ROAS, Retention)
• Own your channel strategy end-to-end: design your own testing structure for creatives, audiences, and bidding strategies, focused primarily on Tier-1 markets (US, Western Europe)
• Maintain campaign reporting and prepare regular performance reports
• Communicate directly with network account managers on launches, optimization, creative moderation, and technical issues
• Collaborate with the Creative team to request and provide feedback on creatives
• Report on results in team syncs and drive your own experiments with real ownership of outcomes

It’s all about you

• 1+ years of hands-on experience in performance marketing for mobile apps, personally launching and managing campaigns (not only through a managed-service setup)
• Practical, hands-on experience with at least one of the networks: AppLovin, Moloco, Mintegral, Unity Ads, at a meaningful spend level (not just small test launches)
• Experience working with monthly budgets from $100,000
• Understanding of programmatic/ad network buying principles (bidding, auctions, optimization events)
• Solid grasp of core performance metrics (CPA, CPI, CTR, CR, ROAS, IPM, LTV)
• Confident with Excel/Google Sheets for data work
• English at Intermediate (B1+) level for working with network interfaces and communicating with account managers
• Attention to detail and discipline in reporting and campaign structure

Would be a plus

• Basic SQL knowledge or experience with BI tools (Tableau, AppsFlyer)
• Understanding of MMP tools (AppsFlyer/Adjust) and attribution principles
• Interest in automating routine processes (reporting, monitoring) using AI tools

What we offer

Care and support: 

• 20 paid vacation days, 15 sick days, and 6 additional days off for family events
• Up to 10 additional days off for public holidays
• 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
• Technical interview
• Interview with Hiring Manager
• Bar raiser interview
• Reference check
• Offer

Geniusee, we help businesses thrive through technology partnerships and strengthen the engineering community by sharing knowledge and creating opportunities 🙌
We live by our values: Continuous Growth, Team Synergy, Taking Responsibility, Conscious Openness, and Result-Driven Mindset. Here, you’ll find a safe, inclusive, and supportive environment where your voice is heard, and feedback is welcome 🤗
Whether you want to work from home or from our offices in Kyiv / Lviv / Warsaw with stable electricity and Wi-Fi, we’ve got you covered.

Join us and make an impact 💜

Requirements:
• 3+ years of relevant experience in the IT industry;
• Proven hands-on experience with AWS partnership programs;
• Track record of successfully passing AWS competencies and service delivery programs;
• Experience generating referred leads and supporting internal teams through AWS activities;
• Proficiency in preparing and submitting opportunities via the AWS portal;
• Strong relationship-building skills with AWS representatives; an existing network is a strong advantage;
• Practical experience working with AWS partner funding programs (MDF, PoC, MAP, etc.);
• Familiarity with well-architected frameworks and best practices;
• Strong research and analytical abilities;
• Excellent problem-solving skills and a proactive mindset;
• Exceptional communication and presentation skills;
• Strong time management skills with the ability to work independently and in asynchronous environments;
• Upper-intermediate or higher level of spoken and written English.

Nice to Have:
• Experience working with Google Cloud or other cloud providers;
• Experience in partner engagement and enablement;
• Exposure to emerging technical partnerships;
• Basic understanding of Generative AI concepts;
• Experience working in a KPI-driven environment.

Responsibilities:
• Drive rapid growth of the AWS partnership (both in revenue and strategic presence);
• Design and launch new service offerings across the company;
• Initiate and scale new strategic partnerships.

What you will get:
Career growth & projects
• Competitive salary based on your skills and experience, and a benefits package.
• Regular performance appraisals to support your career development.
• Professional development support: online courses, certifications, and study compensation (including English courses).
• A modern tech stack across challenging, long-term projects.

Health & well-being
• Paid vacation (18 working days), public holidays (11 days), and sick leave (15 days).
• VIP medical insurance or sports coverage.

Work environment & flexibility
• Remote work from anywhere in the world or in one of our offices in Kyiv, Lviv, or Warsaw.
• Necessary equipment to perform your work.

Culture & community
• A collaborative and open culture where contributions are recognized.
• Regular corporate online & offline activities.
• Geniusee Charity Fund, making a difference beyond tech.

Job Description

We are looking for experienced full-stack developer with 8–10 years frontend and 5+ years advanced React experience

• React.js is a must
• Playwright experience for test automation is a must
• Experience of using AI for day to day development
• Redux/Context API
• Material UI
• Chart.js/D3.js

• REST/GraphQL APIs

   

Job Responsibilities

Design and implement advanced UX-driven portals, enabling customers to configure and manage services through intuitive interfaces.

• Develop feature-rich React front-end applications.
• Integrate portals with backend services via REST/GraphQL.
• Implement visualizations and dashboards for usage and analytics.

• Ensure maintainable, scalable UI architectures.

   

Department/Project Description

Our client is a global leader in cloud security, enabling organizations to securely transform their networks and applications for a mobile and cloud-first world. Through its Zero Trust Exchange™ platform, it provides fast, secure, and seamless access to applications, regardless of device, location, or network. Trusted by thousands of enterprises, their products help reduce risk, lower IT costs, and deliver a better user experience by replacing traditional on-premises security with a modern cloud-delivered approach.

You will work on UX-Driven Portal Development focuses on building modern, user-friendly portals that enhance customer experience and simplify service management.

Position overview

We're looking for a Senior Windows Drivers Engineer to join our Endpoint team and help build and enhance the core technology behind Cybereason's Windows agent. In this role, you'll design and implement low-level Windows components, including Windows kernel drivers and user-mode services, that power advanced threat detection and response capabilities. You'll work closely with security researchers, sensor developers, and platform engineers to ensure our agent is stable, stealthy, and performant across all supported environments.

This role demands strong C++ expertise, deep knowledge of Windows OS internals, KMDF (Kernel-Mode Driver Framework), and a passion for building secure, high-impact software.

Responsibilities

• Design and develop low-level components for the Windows endpoint sensor, focusing on stability, performance, and stealth.
• Build kernel-mode drivers and user-mode services that collect, filter, and analyze endpoint telemetry.
• Implement robust techniques for process/thread monitoring, registry tracking, file system interception, and network event visibility.
• Debug complex kernel-mode and user-mode issues across multiple Windows versions.
• Collaborate with researchers and product teams to translate threat intelligence into product features.
• Conduct code reviews, mentor engineers, and contribute to architectural decisions.
• Stay current with Windows internals, security trends, and system programming best practices.

Requirements

• 5+ years of hands-on experience in C++ development (C++11 or later).
• In-depth understanding of Windows internals, including kernel architecture, system calls, memory management, and drivers.
• Proven experience developing Windows kernel drivers using KMDF, Windows Filtering Platform (WFP), minifilters, and ETW.
• Strong debugging and reverse engineering skills using tools such as WinDbg, Process Monitor, Process Explorer, IDA, or Ghidra.
• Familiarity with Windows security mechanisms, including integrity levels, UAC, AppLocker, and Secure Boot.
• Experience using Visual Studio, Windows Driver Kit (WDK), and related development environments.

Nice to have

• Experience building or contributing to endpoint security products (EDR, AV, EPP, etc.).
• Familiarity with Windows telemetry, Event Logs, Sysmon, and ETW tracing.
• Experience with malware analysis, Windows exploitation techniques, or SOC/DFIR workflows.
• Experience in the cybersecurity domain is a plus.
• Scripting skills in PowerShell or Python for automation and testing.
• Understanding of kernel-mode security evasion techniques and defensive mechanisms.
• Experience with code signing, driver deployment, and secure update mechanisms.
• Bachelor's degree in Computer Science, Software Engineering, or equivalent practical experience.

Description:
 

Reyo Media Cyprus develops high-performance web products, marketing websites, and browser-based games. We are looking for an experienced Senior QA Automation Engineer to help establish and scale our quality assurance and automation practices across multiple project types.

This is a hands-on, part-time role for someone who enjoys building QA processes from the ground up, selecting the right tools, and creating automation strategies that improve product quality and development efficiency.

Requirements:
 

• 4+ years of experience in Software Quality Assurance, including significant automation experience.
• Proven experience building QA processes and automation frameworks from scratch.
• Strong hands-on experience with modern test automation tools such as Playwright, Cypress, Selenium, or similar.
• Experience testing modern web applications and websites.
• Solid understanding of software testing methodologies, QA best practices, and SDLC.
• Experience designing test plans, test cases, checklists, and bug reports.
• Good understanding of client-server architecture, APIs, and browser technologies.
• Experience working with Git and CI/CD pipelines.
• Strong analytical and problem-solving skills.

Responsibilities:
 

• Design and implement the company's QA automation strategy and processes.
• Evaluate, select, and establish automation frameworks and testing tools.
• Build and maintain automated end-to-end, functional, and regression test suites.
• Create testing standards, quality gates, and release validation processes.
• Develop automation solutions for web applications, websites, and Unity WebGL games.
• Perform exploratory and manual testing when necessary.
• Identify, document, prioritize, and verify software defects.
• Collaborate closely with developers, designers, and project managers to ensure product quality throughout the development lifecycle.
• Integrate automated testing into CI/CD pipelines.
• Monitor test results and continuously improve test coverage and reliability.
• Provide guidance and best practices for quality assurance across the team.

You will work across a variety of products, including:

• React.js Single Page Applications (SPAs) and landing pages
• WordPress websites
• Unity WebGL games

Nice to have:
 

• Experience testing Unity WebGL games or browser-based games.
• Familiarity with performance, load, and security testing.
• Experience with WordPress website testing.
• Knowledge of accessibility testing standards.
• Experience with GitHub Actions, GitLab CI, Jenkins, or similar CI/CD platforms.

Working conditions:
 

• Flexible part-time engagement.
• Remote-friendly work environment.
• Opportunity to shape and own the QA automation strategy across multiple products.
• Work on a diverse portfolio of web applications, websites, and browser-based games.
• Direct collaboration with a highly technical and product-focused team.

We are looking for a manual QA engineer to work in a dedicated team on an AI-based project. The candidate must have a solid understanding of AI and hands-on experience of using AI tools such as Claude Code and Codex to speed up the testing process.

Responsibilities:

• Performing testing of sprint tasks (functional and smoke testing);
• Executing regression testing before releases;
• Creating, updating, and maintaining test documentation (checklists, test cases);
• Collaborating closely with developers and product team to clarify requirements and reproduce issues;
• Suggesting improvements to testing processes, automation coverage, and overall product quality.

Requirements:

• Day to day using AI tools to perform;
• Strong understanding of software testing principles, QA methodologies, SDLC, STLC;
• Experience working in Agile / Scrum teams;
• Experience writing and maintaining test cases, checklists, test plans with AI;
• Ability to analyse logs, results, and detect root causes of failures;
• Ability to accelerate testing processes by leveraging AI tools (e.g., generating test scripts, test data, or documentation using AI).

Would be a plus:

• Practical experience with automation testing using Playwright, Cypress, or Selenium (UI automation);
• API automation experience using Postman and/or REST Assured;
• Experience with performance or load testing (e.g., JMeter, k6);
• Experience with test reporting dashboards (Allure, TestRail, Zephyr, etc.);
• Understanding of cloud environments (AWS, GCP, Azure) and test execution in cloud pipelines;
• Familiarity with best practices of Clean Code and test automation architecture.

We offer:

• Comfortable working hours (10-19 Kyiv time zone);
• Regular result-based performance and salary reviews;
• Bonus system;
• Attractive social package (unlimited and fully paid sick days, fully paid vacation, birthday day off, etc;)
• Corporate equipment on request;
• Fully or partially funded education (courses, certifications, conferences, etc.)
• Partial payment for English and Sports;
• Friendly and open-minded team;
• Established product-focused environment;
• Range of tasks, from quick and simple to challenging investigation to run;
• Cheerful & dynamic environment;
• Virtual workspace with perspective to move into one of the offices;
• Mentorship.

Hiring steps:

• First interview with the Recruiter;
• Second interview with the Senior QA Engineer;
• Live Testing with the Team Lead (30-60 min call);
• Job Offer.

If you are passionate about crypto market trends, the Social Media Marketing Manager role is a part of a project specializing in the cryptocurrency area. You’ll join a Marketing department team of 10+ people.

Key Responsibilities:

• Market & Competitive Intelligence: Continuously analyze market trends and competitors (crypto, blockchain, finance, IT), identifying opportunities for timely and engaging content.

• Content Execution and Publication: Generate content ideas, develop new content formats, and create viral and trend-driven posts — from planning to publishing and distribution.

• Social Activations & Partnerships: Lead social campaigns (giveaways, AMAs) and manage collaborations with communities, influencers, and KOLs.

• Cross-Platform SMM: Own the growth, engagement, and content distribution across key social channels, including X (Twitter), Telegram, Reddit, and LinkedIn.

• Reddit Community Management: Manage Reddit communities by participating in discussions, developing native content, and growing engagement through both existing and newly established accounts.

• Performance & Optimization: Own SMM metrics and reporting, continuously optimizing strategies based on data and performance insights.

Requirements:

• Experience: At least 3 years of experience as an SMM. 

• Social Media Experience: Proven track record with Twitter, Telegram, Reddit, and LinkedIn.

• Domain: +1 years in blockchain or cryptocurrency products.

• Community management engagement: Proven skills in building and maintaining engaged social media communities.

• Languages: English proficiency (Upper-Intermediate or higher).

• Soft skills: ability to multitask effectively, making swift and responsible decisions.

Nice to have: 

• Social Media Channels: Experience with social platforms such as Discord, YouTube, Binance Square, CMC Community, and other Web3-oriented networks;

• Technical skills: Basic skills in video editing or motion design.

Conditions and benefits:

• Remote-friendly culture: Work from anywhere in the world with a flexible schedule in CET timezone.

• Opportunities for growth: Take advantage of paid training, English-speaking clubs, support for certifications, and participation in professional events.

• Reliable conditions: Transparent terms, stable compensation, and consistent support.

• Room for ideas: We work in teams with full autonomy, empowered by our clients to take complete ownership of our projects.

About Us

We are a well-funded iGaming startup on a mission to redefine the future of online gaming. Built on a foundation of transparency, integrity, and responsible gaming, our next-generation SaaS Game & Entertainment platform empowers operators to launch and scale dynamic gaming experiences with unmatched speed and confidence.

Job Summary

We are looking for a Senior Software Engineer (Payments) to build and scale the payments infrastructure of a high-load CS2 skins gambling product. You will own multiple PSP integrations and develop secure, reliable payment flows covering deposits, withdrawals, refunds, monitoring, fraud detection, reconciliation, disputes, and chargebacks. This is a hands-on role with significant technical ownership and close collaboration with Product, Payments, Finance, Compliance, and Fraud teams.

Required Qualifications (Must-Have)

• 7+ years of commercial software development experience, including complex production fintech web applications.
• 5+ years of back-end development experience with Node.js and TypeScript in high-load fintech environments, including payments, banking, and trading.
• 3+ years of experience as a Full-stack JavaScript/TypeScript Developer.
• Proven experience integrating multiple PSPs through APIs, SDKs, webhooks, hosted fields, iFrames, or redirect-based payment flows.
• Strong understanding of payment lifecycles, including authorization, capture, settlement, refund, reversal, dispute, and chargeback processes.
• Experience designing high-load, fault-tolerant, event-driven, or distributed systems.
• Strong knowledge of REST APIs, webhooks, idempotency, retries, queues, concurrency, and transaction consistency.
• Experience with relational and non-relational databases, automated testing, monitoring, logging, and production incident investigation.
• Proficiency in React.js, Svelte, Vue.js, Angular, or another modern front-end framework.
• Experience with state management tools such as Redux or MobX and styling technologies such as SCSS or Tailwind CSS.
• Strong understanding of application security, authentication, authorization, encryption, and secure handling of payment data.
• Fluency in Ukrainian or Russian and proficiency in English for technical collaboration in a remote/global team setting.
• Ability to work within the CET/EET time zone.
   

Your Advantage (Nice-to-Have)

• Experience in iGaming, gambling, gaming, marketplaces, digital goods, or other high-risk industries.
• Experience with cards, bank transfers, open banking, crypto, wallets, gift cards, or alternative payment methods.
• Knowledge of CS2 skins, Steam inventories, skin trading, or virtual-item marketplaces.
• Experience building payment orchestration, smart routing, cascading, failover, and decline-recovery systems.
• Knowledge of fraud prevention, risk scoring, velocity rules, device fingerprinting, and transaction monitoring.
• Experience with reconciliation, settlements, PSP fees, reserves, disputes, and chargeback workflows.
• Familiarity with PCI DSS, KYC, AML, sanctions screening, or responsible gambling requirements.
• Experience with AWS, Kafka, RabbitMQ, SQS, Grafana, Datadog, Sentry, ELK, or similar technologies.
• Experience mentoring engineers or contributing to payment architecture and engineering standards.
   

Ideal Candidate

You are a hands-on senior engineer with strong fintech and payment-processing expertise. You understand that payment systems must be secure, resilient, observable, and financially accurate. You can independently investigate failed transactions, work with PSP logs and technical support, and turn complex business and compliance requirements into reliable technical solutions.

You are comfortable building a payments function from the ground up, making architectural decisions, and taking ownership of the full transaction lifecycle.

Key Responsibilities

• Design and build the product’s payments infrastructure for deposits, withdrawals, refunds, reversals, settlements, and disputes.
• Integrate and maintain multiple PSPs and alternative payment methods.
• Build a scalable payment-orchestration and provider-abstraction layer.
• Implement secure transaction processing with idempotency, retries, callback validation, duplicate prevention, and consistent transaction states.
• Develop payment routing, cascading, failover, and provider-prioritization logic.
• Build real-time monitoring, dashboards, alerts, and internal payment-management tools.
• Implement fraud detection, transaction monitoring, risk controls, and payment limits.
• Develop reconciliation processes for transactions, settlements, fees, refunds, reserves, and chargebacks.
• Build dispute and chargeback workflows, including evidence collection and deadline tracking.
• Investigate payment incidents, provider outages, delayed callbacks, and reconciliation discrepancies.
• Improve payment approval rates and checkout conversion through technical and performance analysis.
• Develop payment-related front-end components for deposits, withdrawals, payment statuses, and error handling.
• Ensure payment systems adhere to secure engineering practices and PCI DSS requirements.
• Maintain automated tests and technical documentation for payment integrations and transaction flows.
• Participate in architecture and code reviews, provide production support, and mentor other engineers.
   

Recruitment Process

1. Application Review (1-2 weeks).
   If you have not received a response from the recruiter, your experience is irrelevant to this vacancy.
2. Interview Stages (2-3 weeks).
   1. Prescreen Call with Recruiter - 30 min.
   2. Technical Interview with CTO and CPO - 1.5-2 hr.
3. Job Offer
4. Referrals: Employment and Background Check
    

We Offer

• Competitive compensation package (depends on your experience and skills).
• Fully remote work with flexible hours (within the CET/EET time zone) from any location of your choice.
• 29 business days of vacation and paid sick leave.
• Corporate equipment (laptops, monitors, etc.).
• Professional courses/certifications (200 EUR per year).
• Operating in a start-up environment with cutting-edge technologies and unlimited investments in software upgrades, free from legacy systems or outdated solutions.
• Values-driven culture with a friendly and supportive work environment.
• Matrix organizational structure designed to streamline communication, remove barriers, and promote efficiency.
   

We’re not looking for someone to just “join the team” - we’re looking for someone ready to shape the product, lead meaningful growth, and make an impact from day one.

If that sounds like you, send over your CV and let’s talk!