Jobs at Djinni

Технологічний стек

Node.js (TypeScript, NestJS)
REST API / WebSocket
PostgreSQL, Redis
ClickHouse / TimescaleDB (аналітика та історичні дані)

Blockchain SDKs:
viem
ethers
web3.js
TronWeb
Solana Web3.js

Wallet Infrastructure:
MPC Wallets
Embedded Wallets
Custodial / Non-Custodial Solutions
Privy, Turnkey, Fireblocks, аналогічні рішення

Payment Infrastructure:
Visa / Mastercard integrations
Card Issuing Platforms
PSP Integrations
Background Workers / Queues
Docker, Kubernetes, GitHub Actions, CI/CD

Monitoring:
Prometheus
Grafana
OpenTelemetry


Задачі
Розробка та розвиток backend-сервісів для криптогаманців та платіжної інфраструктури
Інтеграція та підтримка EVM-мереж:
Ethereum
Polygon
Arbitrum
Base
BNB Chain

Інтеграція та підтримка:
Solana
Tron
Розробка систем депозитів та виведення коштів

Побудова сервісів:
балансів
транзакцій
історії операцій
внутрішніх переказів

Розробка та підтримка wallet infrastructure:
MPC wallets
embedded wallets
custodial / non-custodial wallets

Інтеграція платіжних карт:
Visa
Mastercard
card issuing providers
Інтеграція PSP та fiat on/off-ramp провайдерів
Реалізація моніторингу транзакцій та статусів платежів у режимі реального часу

Побудова систем індексації блокчейнів:
RPC polling
WebSocket subscriptions
обробка ончейн-подій
Забезпечення консистентності між ончейн та офчейн станом
Розробка API для мобільних застосунків, веб-платформи та внутрішніх сервісів
Проєктування високонавантажених та відмовостійких сервісів
Оптимізація продуктивності БД та високонавантажених систем
Code Review та участь у технічних рішеннях команди


Вимоги

Senior Backend Engineer з production-досвідом у Web3 та платіжній інфраструктурі
4+ років комерційного backend-досвіду
Впевнений Node.js та TypeScript у production
Практичний досвід роботи з:
Ethereum та EVM chains
Solana
Tron
Досвід розробки wallet infrastructure

Розуміння:
account abstraction
smart wallets
MPC wallets
embedded wallets

Практичний досвід:
індексації блокчейнів
роботи з RPC nodes
обробки ончейн-подій
побудови transaction monitoring
Досвід інтеграції платіжних карт або card issuing платформ

Розуміння процесів:
card authorization
card settlement
chargebacks
transaction lifecycle

Досвід побудови сервісів:
депозитів
виведення коштів
внутрішніх переказів
балансів

Досвід проєктування мікросервісної архітектури
Сильні навички PostgreSQL та Redis
Досвід роботи з highload системами
Web3 production-досвід — обов’язковий

Буде плюсом

Досвід роботи з:
Privy
Turnkey
Fireblocks
ZeroHash
Bridge
Stripe Issuing
Galileo
Marqeta
Досвід запуску криптокарт та card programs
Досвід роботи з AML/KYC провайдерами
Розуміння PCI DSS
Досвід роботи з міжнародними платіжними системами
Досвід інтеграції fiat on/off-ramp рішень
Досвід роботи з DeFi-протоколами та DEX-інфраструктурою

Department/Project Description

This organization operates within the medical technology sector, focusing on advancing healthcare through innovative solutions. It develops and manufactures a wide range of medical devices designed to improve patient outcomes and enhance quality of life. The company serves healthcare providers, hospitals, and patients globally, delivering critical technologies for various medical conditions. Its commitment lies in leveraging cutting-edge engineering and scientific research to address complex health challenges. The firm maintains a strong market presence by consistently delivering high-quality, reliable, and safe medical products.

Job Description

• Over 6 years of commercial experience in automation testing.
• Practical expertise in preparing complete sets of release documentation.
• Strong knowledge and hands-on experience with various types of automation testing, techniques, and approaches, particularly in embedded systems.
• Expert in test design and test scripting.
• Solid programming background, preferably in C/C++. If primary experience is in other languages, possesses at least a basic knowledge of C/C++ (standard types, functions, STL library, and practical programming experience).
• Basic knowledge of Linux.
• Experience with API testing.
• Strong debugging and problem-solving skills.
• Self-motivated, responsible, and capable of working independently.
• Upper-intermediate English proficiency with daily communication experience, including direct client interaction.
• Skilled in Git version control.
• Experience in SRS gathering and analysis.

Additional Skills (Nice to Have):

• Bluetooth protocol knowledge.
• Experience with Polarion.
• Experience with Subversion.
• Familiarity with LabVIEw

Job Responsibilities

• Define and implement automation frameworks, testing approaches, and best practices across projects.
• Ensure testing aligns with business goals, embedded system requirements, and release standards.
• Convert and optimize existing C++ scripts/test libs while introducing improvements for scalability and maintainability.
• Develop new automation scripts to support advanced functionality and complex embedded scenarios.
• Own release documentation
• Perform scripts/ test libs reviews 
• Collaborate directly with clients: Participate in meetings, gather requirements, and provide technical consultation.
• Contribute to requirement analysis (SRS) and gap analysis

We are looking for a dedicated Middle QA Engineer to join our team. This role combines quality assurance and customer support, requiring strong attention to detail, proactivity, excellent communication skills, and a good understanding of system functionality.
 

Required Skills & Qualifications
 

• Experience: At least 2 years of proven experience in QA / software testing.
• Language Proficiency: Fluent or professional working proficiency in English.
• Core Competencies: Strong attention to detail, analytical mindset, and sharp problem-solving skills.
• Technical Web Debugging: Proficient in using browser developer tools (specifically analyzing console logs and inspecting network traffic).
• AI Tool Integration: Ability to effectively leverage AI tools to optimize testing workflows and productivity.
• API Testing: Solid understanding and hands-on experience with API testing concepts and tools (e.g., Postman).
• Architecture: Good understanding of microservices architecture and how distributed components interact.
• Test Design: Strong knowledge of test design techniques with the ability to apply them to daily testing scenarios.
• Testing Methodologies: Deep understanding of different testing types, levels, and methodologies.
• Coding Basics: Fundamental understanding of JavaScript for reading code, debugging, or basic script comprehension.

Headway Inc is a global tech company, revolutionizing lifelong learning by creating digital products for over 150 million users worldwide. Our mission is to help people grow. We’re proud to be ranked 4th among the World’s Top EdTech Сompanies by TIME magazine. We believe lifelong learning should be accessible, personalized, and impactful to each individual. That’s how we change the world and why we bring together exceptional minds.
 

The core of our achievements is our team. We believe in people and shared values SELECT. That’s why, together with Mariana Boloban, Head of People, we’re looking for a Head of HR to build and scale a consistent, high-quality HR function across the company.
 

The team you will be working with:

You’ll work with the HR team in close partnership with People Operations — a team focused on enabling business goals through manager development, stronger cross-team collaboration, and building a mature people management system. We support stable performance, high engagement, and a strong employee experience.
 

As a Head of HR, you will:

• Directly influence business performance by shaping how teams are structured, how goals are set, and how people are managed.
• Turn business challenges into clear people decisions — helping leaders move faster, with less ambiguity and stronger accountability.
• Lead and develop a team of HR Specialists, supporting them in complex people cases and growing their functional maturity.

Your mission:

Partnering with the HR team and the broader People Operations function, you will build a people system where strong teams consistently deliver business results.
 

This job is perfect for you if you:

• Want to directly impact business results through people
• Are excited to work with a strong company culture and further develop it as a management tool that drives performance, accountability, and team effectiveness.
• Thrive in fast-paced environments where priorities shift, decisions matter, and you have the flexibility and ownership to drive meaningful changes
• Want to grow and develop an HR function and team, making it stronger, more independent, and more impactful over time.
   

What will you do:

• Own the quality and consistency of HR decisions across the company, ensuring they are fair, scalable, and aligned with business goals.
• Build and scale HR as a system — from performance management and PDP to career development, lifecycle standards, and decision-making frameworks.
• Align managers across teams and tribes, creating shared expectations around performance, feedback, and people decisions.
• Turn people data into actions, using engagement, retention, and performance signals to identify risks and drive improvements.
• Develop the HR function and team, building strong HR Specialists, clear competency frameworks, and increasing overall functional maturity.
• Partner with People Operations leaders (TA, People Infrastructure, Head of People) to ensure aligned, non-conflicting people decisions at scale.
   

What do you need to join us:

• 4+ years in a Lead / Head of HR role in fast-growing product or tech companies, with ownership of business-critical people decisions.
• Proven experience driving business outcomes through HR — impacting performance, retention, and team effectiveness, not just processes.
• Strong experience building and scaling HR systems (performance, career development, lifecycle, governance), not only operating them.
• Experience working with multiple teams or org units (100+ people) and aligning different leaders into a consistent approach.
• Strong business acumen and leadership skills — able to challenge leaders, navigate ambiguity, and make tough decisions that impact delivery.
• English — Upper Intermediate+.
• Alignment with the values of our team (SELECT).
   

What do we offer:

• Work within an ambitious team on a socially impactful education product.
• An office with a reliable shelter, generators, satellite internet, and other amenities.
• Access to our corporate knowledge base and professional communities.
• Personal development plan.
• Compensation for English language learning, external training, and courses.
• Medical insurance and full sick leave compensation.
• Company doctor and massage in the office.
• Sports activities: running, yoga, boxing, and more.
• Corporate holidays: we go on a week-paid holiday to rest and recharge twice a year.
• Supporting initiatives that help Ukraine.
   

Working schedule:

This is a full-time position based in Kyiv with a hybrid setup. We stay flexible, but for this role our focus is on working from the office most of the time — it helps to stay close to context, and most of the team are based in Kyiv.
 

Are you interested?

Send your CV!

About Jakala 

We are Jakala — a data, AI and experience agency. Our team builds production-grade web applications and data-driven solutions for enterprise clients, much of which is in the healthcare and life sciences space. This particular team works closely with R&D, automating lab and scientific workflows: building web applications that capture, integrate and surface research data, and the services and integrations behind them. The work rewards engineers who care about correctness, reliability and clean delivery to clients who depend on the results. 

We are looking for a Senior Full Stack Developer to help build and deliver these applications, take ownership of meaningful parts of the system, and contribute to the technical decisions that shape them. As the scope of our work continues to grow, we want an experienced developer who can move comfortably across the stack and raise the quality of what we ship. 

What you'll do 

• Build across the stack. Design, develop and support web applications end to end — frontend interfaces and the backend services and APIs behind them. Build new features, improve existing functionality, and keep the codebase healthy as it grows. 
• Integrate data and services. Design and integrate REST APIs, third-party services and enterprise data sources. Much of the value in lab-automation work comes from reliably getting data in and out of systems, so robust, well-tested integrations matter. 
• Improve performance and reliability. Profile and tune applications, address bottlenecks, and make deliberate choices that keep systems fast, stable and maintainable over the long life of a client engagement. 
• Shape technical decisions. Participate in technical discussions, contribute to architectural choices, review code and support other developers. We want someone who improves the team, not just their own output. 
• Apply AI where it earns its place. Most of our work here is solid full-stack engineering, but AI shows up where it genuinely helps — LLMs for making sense of unstructured data, and the occasional GenAI project between lab-automation engagements. We have also trained a computer-vision model for one engagement. You don't need a machine-learning background, but curiosity about applying these tools well is a real plus. 

What we're looking for 

• 5+ years of experience in full-stack development — you can own a feature from database to UI. 
• Ability to work independently and take ownership of technical solutions. 
• Solid experience with Python on the backend. 
• Strong TypeScript and experience with React or Vue on the frontend. 
• Comfortable writing and maintaining automated tests (Vitest, Pytest, or equivalents). 
• Experience working with relational databases — MySQL and/or PostgreSQL. 
• A good understanding of REST APIs and how to design and integrate them well. 
• Fluency with Git and modern development workflows. 
• Experience with Docker and containerization. 
• Basic AWS or other Cloud infrastructure experience. 
• Upper-intermediate English or above, sufficient for day-to-day communication and technical discussion. 

Nice to have 

• Exposure to AI-related features — LLM integrations, RAG, or AI-powered workflows. 
• Any machine-learning or computer-vision experience. 
• Basic Terraform and CI/CD pipeline knowledge. 
• Familiarity with Flask-RESTful or similar REST frameworks. 
• Experience with data-integration patterns: external APIs, document ingestion, and enterprise data sources. 
• Fluent usage of AI-assisted development tools (Claude, Cursor, Copilot and the like) in your own workflow. 

What you'll get 

• Competitive compensation based on experience and skills. 
• 20 working days of paid vacation plus paid sick leave. 
• Health insurance package. 
• English language classes and learning support. 
• Coverage for courses, certifications, and tech conferences. 
• Fully remote working environment with flexible hours and reasonable overlap for collaboration. 
• Long-term, varied projects with real influence over technical decisions, in a collaborative team with minimal bureaucracy. 

About working at Jakala 

At Jakala, we value our talents and empower our people to express their full potential. People are at the heart of everything we do — a diverse, multifaceted blend of individuals with passion, ambition, and ideas for turning data into value. We give Jakalers a collaborative, supportive environment and the tools, opportunities, and benefits to maximize the impact of their work. 

“Together to get there” is our value proposition because we believe that sharing our abilities is our strength. If this role matches your experience and interests, we'd be glad to hear from you. 

About Jakala 

We are Jakala — a data, AI and experience agency. Our team builds production-grade web applications and applied AI systems for enterprise clients in the healthcare and life sciences space. The work spans multi-agent LLM pipelines, retrieval-augmented generation, data connectors and the web applications that wrap them, delivered to clients who care deeply about accuracy, traceability and compliance. 

We are looking for a Senior GenAI Developer focused on delivery — someone who turns a design into a working, reliable system and ships it. You’ll be strong enough to take a small AI project or proof-of-concept and deliver it largely on your own, and equally comfortable working as part of a team on medium-to-large engagements. This is a hands-on senior individual-contributor role; the emphasis is on building. 

What you’ll do 

• Build and ship. Develop production-grade web applications with AI integration — frontend, backend services and the APIs that connect them. Implement RAG and semantic-search flows, agent orchestration, document/data connectors, and the surrounding application logic. 
• Own delivery of smaller projects end to end. Take a PoC or small AI project from the agreed approach to a working, validated deliverable largely on your own — making sound implementation decisions as you go and flagging the ones that need input. 
• Contribute on larger teams. On medium-to-large projects, own your part of the system, integrate cleanly with other engineers, and keep your components reliable. Participate in technical discussions and contribute to implementation decisions within an agreed architecture. 
• Make AI systems reliable, not just demoable. Handle context windows, token and latency constraints, error and failure modes, and the accuracy/traceability requirements that matter in regulated work. Test what you build, including the behavior of the AI parts. 
• Integrate and connect. Design and consume REST APIs, integrate third-party AI models and enterprise data sources (external APIs, document ingestion, SharePoint and similar), and wire up authentication where needed. 
• Support the team. Review code, share patterns, and help teammates when needed. 

What we’re looking for 

• Strong experience (5 years plus) building and shipping production software full-stack, with hands-on experience integrating LLMs into real applications (at least 1 year). 
• Solid LLM engineering skills: RAG, embeddings and vector search, prompt-engineering patterns, and at least some exposure to multi-agent orchestration. You understand how to make an AI feature behave reliably, not just produce a good first demo. 
• Backend: Python and/or Node.js.  
• Frontend: React, Next.js and/or Vue (component design, state management). 
• Data: SQL, NoSQL and vector databases. 
• Good understanding of REST APIs, integration patterns, Git and branching workflows. 
• Cloud familiarity with at least one major platform — AWS/Bedrock, GCP/Vertex AI or Azure/OpenAI — and the services that back AI workloads. 
• Ability to work independently and take ownership of a deliverable, while also collaborating well inside a team. 
• Effective usage of AI-assisted development tools (Claude, Cursor, Copilot and the like). 
• English sufficient for day-to-day team communication and technical discussion. 

Nice to have 

• Experience in regulated or compliance-heavy domains — healthcare, life sciences, finance — where audit trails and careful data handling matter. 
• Familiarity with evaluating LLM systems (accuracy checks, eval harnesses, regression sets). 
• Unit and integration testing practices (Pytest, Vitest or similar). 
• Infrastructure and delivery breadth: Terraform, Docker/containerisation, CI/CD. 
• Experience with data-integration patterns: external APIs, scrapers, document ingestion, enterprise sources. 

What you’ll get 

• Competitive compensation based on experience and skills. 
• 20 working days of paid vacation plus paid sick leave. 
• Health insurance package. 
• English language classes and learning support. 
• Coverage for courses, certifications and tech conferences. 
• Fully remote working environment with flexible hours and reasonable overlap for collaboration. 
• Long-term, varied projects with the chance to influence technical decisions, in a collaborative team with minimal bureaucracy. 

About working at Jakala 

At Jakala we value our talents and empower our people to express their full potential. People are at the heart of everything we do — a diverse, multifaceted blend of individuals with passion, ambition, and ideas for turning data into value. We give Jakalers a collaborative, supportive environment and the tools, opportunities, and benefits to maximize the impact of their work. 

“Together to get there” is our value proposition because we believe that sharing our abilities is our strength. If this role matches your experience and interests, we’d be glad to hear from you. 

We need a detail-oriented analyst and a proactive communicator who will ensure seamless transaction flows, optimize conversion rates, and manage relationships with payment service providers (PSPs) across diverse global markets.

🎯 Key Responsibilities

• Relationship Management: Serve as the primary point of contact for connected PSPs. Handle day-to-day communications, resolve operational queries, and push for better service terms.
• Onboarding & Integration: Support all stages of PSP onboarding — from the initial intro and gathering technical documentation to the final "go-live" phase.
• Performance Analytics:  Monitor provider dashboards and transaction reports to compare performance.
  • Analyze payment conversion rates (Click-to-Deposit) and identify root causes for failed or pending transactions.
  • Interpret data to spot discrepancies and suggest actionable improvements.
• Operational Excellence:
  • Process internal tickets from Business Development and translate them into clear technical tasks for the Integration/Product teams.
  • Conduct competitive analysis of payment solutions in target regions, identifying new local methods and integration channels.

• Cross-department Collaboration: Work closely with Finance, Legal, Product, and Business Development teams to align payment strategies with global business goals.

  ✅Requirements
  - Experience: 1+ year of relevant experience in iGaming (Betting/Gambling), with a primary focus on European markets such as Italy, Portugal, Czech Republic, Poland, Greece, and the Netherlands.
  - Tier-1 Market Expertise: Proven track record working with Tier-1 European countries and a deep understanding of their payment ecosystems.
  - Payment Systems Knowledge: Strong grasp of Card processing and European Alternative Payment Methods (APMs), including experience with systems such as Blik, iDEAL, MbWay, and similar regional solutions.
  - Technical Skills: Hands-on experience with Payment Service Provider (PSP) admin panels and reporting tools.
  - Analytical Competence: Ability to  effectively communicate with the analytics team, read and interpret dashboards, and generate actionable insights and recommendations based on the data.
  - Languages: Upper-Intermediate (B2+) English proficiency, both written and verbal, for efficient communication with international partners.
  🧠 Soft Skills

• Detail-Oriented: You notice the small things in transaction logs that others might miss.
• Stress Resilient: Comfortable working in a high-pressure, fast-growing global company.
• Assertive: Not afraid to push your position and hold providers accountable for their performance.
• Organized: Ability to manage multiple onboarding processes and tickets simultaneously without losing focus.
• ⭐️ We Offer:
• Format: Remote work, 5/2 schedule.
• Payments in USDT (white crypto);
• Remuneration: Competitive salary + bonuses based on the results of the department you build.
• Growth: Opportunity for growth within the project.
• Benefits: Paid vacation and sick leave.

We are Jakala — a data, AI and experience agency. Our team builds production-grade web applications and applied AI systems for enterprise clients in the healthcare and life sciences space. The work spans multi-agent LLM pipelines, retrieval-augmented generation, data connectors and the web applications that wrap them, delivered to clients who care deeply about accuracy, traceability and compliance. 

We are looking for a GenAI Architect who can own the full arc of an engagement: scoping and estimating new work in presales, designing the solution, and staying hands-on enough to help the delivery team build it well. 

What you'll do 

• Scope and estimate (presales). Turn client briefs into structured requirements, assumptions, risks, and dependencies. Produce work breakdowns and estimates, propose team composition, and present side-by-side platform or approach options when the client needs to make a choice. Defend the numbers to stakeholders and adjust them as the scope clarifies. 
• Design the solution. Architect GenAI applications end to end: multi-agent orchestration, RAG and semantic-search flows, data and document connectors, evaluation harnesses, audit trails, and the surrounding web application. Choose models, platforms and patterns deliberately, and write the reference architecture and decision memos that capture why. 
• Be the technical voice with clients. Translate effectively between business stakeholders and engineers, reflecting the client's specific vocabulary and making complex trade-offs clear: such as choosing between a thin-slice POC and an enterprise data foundation, lightweight orchestration versus heavyweight, or build-now versus design-for-later. 
• Stay hands-on in delivery. Set up the technical foundations, prototype the high-risk parts, review code, and unblock the team. Build proofs of concept quickly to validate feasibility and value before scaling. Keep the delivered system true to the design — especially the parts that matter most for accuracy and traceability. 

What we're looking for 

• Extensive experience designing and deploying production-quality software, with a proven track record in applied GenAI — delivering reliable systems, not just prototypes. 
• Real depth in LLM engineering: multi-agent orchestration, RAG, embeddings and vector search, graphs and ontologies, prompt-engineering patterns and — crucially — how you evaluate and measure an AI system rather than just demo it. 
• Strong full-stack foundations: Python or Node.js on the backend; React or Vue on the frontend; SQL, NoSQL and vector databases. 
• Cloud fluency across at least one major platform and a working understanding of the others — AWS/Bedrock, Cloudflare, GCP/Vertex AI, Azure/OpenAI — including the services that back AI workloads. 
• Demonstrated ability to estimate and scope non-trivial work: breaking a vague brief into requirements, sizing effort under uncertainty, and reasoning explicitly about risk and assumptions. 
• A client-ready communicator: you can run a scoping conversation, write a clear reference architecture or decision memo, and explain a trade-off to a non-technical stakeholder without losing the engineers in the room. 
• An ownership mindset and sound judgment — you care about the why as much as the how, and you size and design honestly even when an easier answer would be more convenient. 
• Fluent usage of AI-assisted development tools (Claude, Cursor, Copilot and the like) in your own workflow. 
• Passion for the AI industry and staying updated on industry insights and trends. 
• Advanced (C1) English or above, sufficient for direct client communication and technical leadership. 

Nice to have 

• Experience delivering into regulated or compliance-heavy domains — healthcare, life sciences, finance — where audit trails, data-handling constraints and traceability are first-class requirements. 
• Familiarity with observability & evaluation tooling and practices for LLM systems (accuracy baselines, eval harnesses, regression sets). 
• Infrastructure and delivery breadth: Terraform, Docker/containerisation, CI/CD. 
• Experience presenting estimates or proposals to enterprise clients and handling side-by-side vendor or platform comparisons. 
• Exposure to data-integration patterns: external APIs, scrapers, document ingestion, SharePoint and similar enterprise sources. 

What you’ll get  

• Competitive compensation based on experience and skills. 
• 20 working days of paid vacation plus paid sick leave. 
• Health insurance package. 
• Coverage for courses, certifications and tech conferences. 
• Fully remote working environment with flexible hours and reasonable overlap for collaboration. 
• Long-term, varied projects with real influence over technical and architectural decisions, in a collaborative team with minimal bureaucracy. 

About working at Jakala 
At Jakala, we value our talents and empower our people to express their full potential. People are at the heart of everything we do — a diverse, multifaceted blend of individuals with passion, ambition, and ideas for turning data into value. We give Jakalers a collaborative, supportive environment and the tools, opportunities, and benefits to maximize the impact of their work. 

"Together we get there" is our value proposition, because we believe that sharing our abilities is our strength. If this role matches your experience and interests, we'd be glad to hear from you. 

We are looking for a Middle Test Automation Engineer (JS) to join a fast-growing project in the medical devices domain.

Our client is a global healthcare leader developing innovative solutions that improve and save lives. You’ll be working on software for a continuous glucose monitoring (CGM) system, including BLE-based components.

Preferable location – Lviv (with possibility to visit office from time to time)

What you’ll do

• Develop and maintain automated test scripts (JS-based)
• Execute manual test cases and analyze results
• Design and improve test cases and test documentation
• Perform functional testing of system features
• Analyze requirements and ensure proper test coverage
• Verify, reproduce, and track defects

• Collaborate with developers and QA team to improve product quality

   

What we’re looking for

• 3+ years of experience in software testing
• 2+ years of hands-on test automation experience
• Strong knowledge of JavaScript for test automation
• Experience with test design and test case development
• Good understanding of testing methodologies and automation approaches
• Experience with bug tracking tools (e.g., Jira)
• Upper-Intermediate English (written and spoken)

Nice to have

• Experience with Bluetooth Low Energy (BLE)
• Background in embedded or hardware-related testing

Why join us

• Work on a meaningful product in healthcare
• Gain experience in a regulated, high-quality engineering environment
• Grow your skills in automation and the medical domain
• Be part of a collaborative and international team

We are an innovative iGaming solution, and we’re looking for an Account Manager to help us revolutionize the industry!

This role is about building strong relationships and keeping everything running smoothly between our clients, providers, and internal teams.

What you’ll be doing:

• Manage day-to-day communication with clients from onboarding to daily support
• Respond to incoming requests: operational, technical, and commercial
• Set up and coordinate promos with clients and providers
• Jump on calls to review results, gather feedback, and plan next steps
• Keep in touch with game providers to align on activities and priorities
• Work with the tech team to solve issues and deliver what clients need
• Spot problems, collect clear info, and report it properly for fast resolution
• Gather feedback from partners and turn it into product or process improvements.
• Attend iGaming events and conferences to meet partners and stay in touch with the market

You’ll be a great fit if you have experience with:

• Experience in account management, partner success, or similar roles
• Confident communication and relationship skills
• Ability to build trust and maintain strong long-term connections
• Basic understanding of technical topics like APIs, integrations, bug tracking
• Good multitasking and time management in a fast-moving environment
• Proactive mindset with a strong sense of ownership
• Solid spoken and written English (Upper-Intermediate or better)

Bonus points:

• Experience in iGaming (aggregators, game providers, operators)
• Comfortable with tools like Jira, Confluence, and Service Desk

A little about us:

We are an innovative iGaming platform. We combine advanced technology with high engineering standards, believing that the best products are born where cutting-edge technical solutions meet deep business expertise.

For over five years, we have:
- Built a comprehensive platform aggregating games from top providers using microservices architecture, cloud infrastructure, and CI/CD approaches.
- Optimized high-load services processing millions of gaming sessions worldwide.
- Implemented ML/AI solutions for process automation, player behavior analytics, and security enhancement.

Why join us? Challenging engineering tasks

✔ Work with cloud technologies, distributed databases, and microservices architecture.
✔ Optimize high-load services for consistently low latency.

Technology leadership

✔ We follow best practices in software development (clean code, TDD, automated testing).
✔ We use Agile and DevOps methodologies and actively integrate ML/AI for innovative player analytics, data verification, and anti-fraud solutions.

Growth dynamics & freedom of action

✔ We make decisions quickly and experiment with new approaches.
✔ This is the perfect place for those who want to bring their ideas to life while working alongside highly skilled colleagues.

Perks from Company:

We want you to feel comfortable and enjoy your work!

• Flexibility — forget strict schedules and office constraints. Work when you’re most productive and from wherever suits you best.
• Time to recharge — 20 paid vacation days + 15 additional unpaid days if needed.
• Your special day off — birthdays are for cake, gifts, and relaxation, not deadlines!
• Health first — we reimburse medical expenses so you can take care of yourself without stress (available in Ukraine).
• Hassle-free sick leave — 12 days without any paperwork + 10 more with a doctor’s recommendation, including mental health days.
• Support during life’s key moments — we provide financial aid for major life events such as weddings, childbirth, or kindergarten expenses (in Ukraine).

What’s next?

1. Interview with a recruiter
2. Technical interview
3. Final interview

If we’re a great match — welcome to the team!

We’re looking forward to meeting you!

Fit4Me is looking for a User Acquisition Manager who will be responsible for scaling the performance marketing direction and driving revenue growth through web funnels.

This role has a direct impact on business results: you will manage budgets, make decisions, and scale what generates profit.

Key business KPIs for this role:

• Keeping CPA within target benchmarks.
• ROAS / ROI performance across advertising campaigns.
• Scaling advertising budgets to $400,000+/month.

This role is a great fit if you:

• Want to own the performance direction and its financial results.
• Think in terms of ROI and revenue impact.
• Work autonomously and make data-driven decisions.
• Know how to scale winning funnels and campaigns.
• Have hands-on experience specifically with Google Ads.
• Want to grow toward a Lead / Head of UA role.

Impact Areas:

• Launching, managing, and scaling advertising campaigns in Google Ads.
• Managing budgets starting from $300,000 and distributing them effectively.
• Achieving and maintaining target CPA / ROAS / ROI metrics.
• Optimizing web funnels with a focus on improving conversion rates.
• Analyzing campaign performance and making data-driven decisions.
• Identifying growth opportunities and scaling profitable setups.
• Collaborating with the marketing team to improve creatives.

Tools: 

• Google Ads
• Amplitude / Tableau.

What we expect from you:

• 1+ year of experience in User Acquisition / Performance Marketing.
• Hands-on experience with Google Ads.
• Experience working with web funnels.
• Practical experience managing budgets starting from $300,000.
• Understanding of key metrics: CPM, CTR, CPC, CR, CPA, ROAS, ROI, LTV.
• A data-driven approach to campaign optimization.
• Intermediate+ level of English.

Nice to have:

• Experience in Health & Fitness or B2C products.
• Experience scaling campaigns across global markets.

Hiring process:

Interview with Recruiter → Test Task → Interview with CMO → Final Interview with HRD → Job Offer 🚀

Fit4Me is looking for a Head of Payments who will drive revenue growth through payment infrastructure, billing logic, and optimization of the payment experience.

In this role, you will define the payment strategy, lead the development of the billing system, and make decisions that directly impact revenue, retention, and scalable growth across Tier 1–2 markets.
This role is for a leader who combines strategic thinking with a hands-on approach: someone who both defines the direction and drives execution.

 

This role is a great fit if you:

• Want to own the payments domain and drive revenue, not just manage processes.

• Think in terms of growth and understand how payments impact conversion, LTV, and product scalability.

• Can prioritize and cut through noise, making decisions where the balance between approval, cost, and risk delivers the best business outcome.

• Feel comfortable in a player-coach role: shaping strategy while staying hands-on with key initiatives.

Impact Areas

1. Payment Strategy & Revenue Growth
• Define the payment strategy as part of the overall growth approach, driving impact on revenue, LTV, and product scalability.
• Own key payment metrics (payment success rate, renewal rate, recovery rate) and continuously improve them through data-driven solutions.
• Build and optimize billing logic (retry, dunning, renewal flows) to maximize conversion and user retention.
• Prioritize initiatives by balancing conversion, cost, and risk based on business needs and growth stage.
• Optimize the payment experience in close collaboration with the Product team.
2. Payment Infrastructure & Scaling
• Build and scale the payment infrastructure: multi-PSP setup, routing, orchestration.
• Select and launch new payment providers, payment methods, and markets (Tier 1/Tier 2).
• Ensure stable payment processing while scaling traffic and revenue.
3. Cost & Efficiency Management
• Optimize payment processing costs (PSP fees, routing, balancing conversion vs cost).
• Lead negotiations with payment providers and improve partnership terms.
• Own payment margin as part of the product’s unit economics.
4. Risk & Stability Control
• Monitor chargeback rate, fraud, and other risk metrics as key constraints for growth.
• Build approaches that enable scaling without exceeding risk benchmarks.
5. Team Leadership & Execution
• Lead Payment Operations and develop the team.
• Set priorities and ensure the right balance between strategic initiatives and operational execution.
• Work directly with the CEO, Product, and Marketing teams to drive growth initiatives.


 

What we expect from you

• 4–6+ years in payments / billing / subscription-based products, with direct impact on payment conversion, retention, or revenue.

• Experience working with high-volume payments ($3–5M+ monthly) and understanding how scale affects performance metrics.

• Building end-to-end payment flows: from payment methods (cards, PayPal, Apple Pay, Google Pay) that impact conversion, to subscription billing (recurring payments, retry / dunning logic, renewal flows, and declined payment handling).

• Strong understanding of unit economics (LTV, CAC, margins) and the role of payments within it, combined with the ability to analyze metrics, form hypotheses, and make decisions that impact revenue and scalability.

• Experience working with Tier 1 / Tier 2 markets and localizing payment methods.

• Building and optimizing payment infrastructure: PSPs (Stripe, Adyen, Braintree), routing, integrations, and launching new payment methods.

• Experience leading a payment function or team, building processes, and setting priorities.

• Upper-Intermediate (B2+) English for working with providers, negotiations, and optimizing partnership terms.

What success looks like in this role

• Payment infrastructure runs reliably at scale: high approval rates, controlled risk levels, and no critical revenue loss.

• Payments become a growth driver: increased payment conversion, improved renewal rates, and higher recovery of failed payments.

• A clear and effective payment strategy is in place: defined priorities, a strong balance between cost / conversion / risk, and a roadmap that supports product scaling.

• Payment processing costs are optimized without compromising performance: improved provider terms and efficient routing setup.

• Payment Operations runs as a well-structured system: stable processes, no operational bottlenecks, allowing you to focus on scaling and developing the function.

Hiring process:

Recruiter interview → Technical Interview → Interview with CEO → Reference check →  Job Offer 🚀

 

We are looking for a Senior Full Stack Developer who operates at Tech Lead level.

This role focuses on architecture ownership, technical decision-making, and team leadership in complex e-commerce and SaaS products.

Format: Remote (candidates located in Ukraine or Europe)
Company: 3DVisual Studio
Company type: Product
Salary: up to 5000$ gross
English level: B2+

Core Requirements & Tech Stack

• 5+ years of commercial experience with PHP (Laravel)
• 3+ years of experience with React
• Experience with Magento / Shopware / WooCommerce (at least 2 years)
• 2+ years in a Lead / Tech Lead role
• Strong experience in system architecture design
• Experience with high-load / scalable systems
• Strong knowledge of APIs, performance, and security
• Experience with legacy code and refactoring

Responsibilities

• Analyze and improve system architecture (includes creation of diagrams and documentation)
• Make and validate technical decisions
• Lead developers and ensure delivery quality
• Conduct code reviews and enforce best practices
• Communicate with stakeholders and third-party integrations

Projects We build:

• SaaS platforms
• 3D configurators
• E-commerce solutions

👉 Complex logic, integrations, and performance-critical systems

Company Benefits

• Cooperation via FOP Accounting support provided by the company (if needed)

For full-time cooperation:

• 15 days of paid vacation
• 5 paid sick days
• Paid public holidays
  
  Interview Process

HR Interview→Technical Interview→ Deep Technical / Architecture Interview→ Final Interview

Important
We are looking for a technical leader with an ownership mindset who can effectively collaborate with team members.

We are looking for a Threat Intelligence Analyst to join our cybersecurity team and strengthen the company’s proactive defense capabilities.

This role combines cyber threat intelligence, proactive investigations, and risk-oriented analysis. We are looking for a specialist who can identify emerging threats, analyze attacker behavior and TTPs, assess their relevance to the business environment, and help improve the organization’s detection and response capabilities.

You will work closely with SOC, IT, and Risk Management teams to transform threat intelligence into actionable security insights and recommendations.
 

Responsibilities

• Collect, analyze, enrich, and contextualize cyber threat intelligence from multiple sources, including OSINT, CERTs, vendors, and industry feeds
• Monitor emerging threats, attacker activity, vulnerabilities, and adversary TTPs relevant to the organization
• Conduct proactive threat hunting activities across SIEM, EDR/XDR, cloud environments, and other telemetry sources
• Develop and validate hypotheses based on threat intelligence and behavioral patterns
• Support investigations related to incidents, suspicious activity, and threat intelligence findings
• Identify gaps in detection and response capabilities and provide recommendations for improvement
• Assess potential business impact and risk associated with identified threats
• Prepare analytical reports, threat assessments, and actionable recommendations for technical and non-technical stakeholders
• Collaborate with SOC and IT teams to improve detection logic, monitoring, and security processes
   

Requirements

• 2+ years of experience in Threat Intelligence, Threat Hunting, SOC L2/L3, DFIR, or Incident Response
• Strong understanding of MITRE ATT&CK framework
• Hands-on experience with SIEM platforms (Microsoft Sentinel, Splunk, QRadar, etc.)
• Experience working with EDR/XDR solutions
• Understanding of cyber threat intelligence processes and proactive threat hunting methodologies
• Strong analytical and investigative skills
• Ability to work with incomplete or ambiguous information
• Understanding of security risks and attack vectors
• Strong communication skills and ability to explain technical findings clearly
   

Nice to have

• Experience with Purple Team activities
• Understanding of cloud security (Azure / AWS / GCP)
• Experience with KQL, Python, Sigma, or detection engineering
• Experience with threat modeling or risk management processes
• Familiarity with automation and detection-as-code approaches

React / Next.js Developer

📍 Remote / Flexible Engagement (Full-time or Part-time)

We are looking for a React / Next.js Developer to join a product-focused team building a modern operations platform in the logistics and e-commerce domain.

This is an opportunity to work on a business-critical application that supports order visibility, delivery tracking, operational workflows, and integrations across multiple systems. The platform is evolving from existing operational tools into a scalable cloud-based solution designed to streamline daily business processes and improve operational efficiency.

Responsibilities

• Develop new frontend features using React, Next.js, and TypeScript.
• Build intuitive interfaces for internal operational workflows.
• Integrate frontend applications with APIs and backend services.
• Create dashboards and management screens for orders, deliveries, statuses, and operational data.
• Implement responsive and mobile-friendly user experiences.
• Translate Figma designs into high-quality production-ready components.
• Collaborate closely with backend engineers, QA, designers, and stakeholders.
• Support real-time or near real-time data updates where required.

• Write clean, maintainable, and scalable code.

   

Requirements

• Strong commercial experience with React.
• Strong experience with Next.js.
• Solid TypeScript skills.
• Experience building business applications, admin panels, dashboards, or internal tools.
• Good understanding of REST APIs and frontend-backend integrations.
• Experience working with asynchronous data, loading states, and error handling.
• Experience implementing designs from Figma.
• Strong understanding of component architecture and reusable UI patterns.
• Ability to work in a fast-moving environment with evolving requirements.

• Good communication and collaboration skills.

   

Nice to Have

• Experience in logistics, transportation, supply chain, e-commerce, or related domains.
• Experience building mobile-friendly web applications.
• Experience with file or photo upload workflows.
• Experience with location-based features, maps, or tracking systems.
• Familiarity with AWS-based environments.
• Experience working on integration-heavy products involving multiple third-party systems.

• Experience with operational dashboards and workflow management platforms.

   

What We Offer

• What’s In It for You?
• Career Growth — Opportunities to develop and advance.
• Performance Reviews — Regular feedback and support.
• Work Anniversaries — Special gifts to celebrate milestones.
• Flexible Work — Hybrid or remote (Lviv office available).
• Mentorship — Guidance from experienced professionals.
• Accounting Support — We handle the paperwork.
• Paid Time Off — 18 vacation days + 5 sick days per year.
• Extra Leave — 10 additional days off annually.
• Free Office Lunches — Enjoy meals on us.
• Team Events — Gatherings, gifts, and a welcoming atmosphere.