Тип вакансії: Повна зайнятість

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About the Company
Our client is a financial technology services provider that expands global access to digital assets by building innovative solutions for the trading ecosystem. Their products provide exchanges, liquidity solutions, and enterprise-grade integrations for clients worldwide. We are currently undertaking a massive project to integrate our core trading infrastructure into the ecosystem of a major bank, and we are looking for a highly capable Senior Full-Stack Engineer (Web & Backend) to drive this initiative.

In this role, you will be responsible for the end-to-end development and integration of high-load trading components, working directly with our CTO and the bank's technical leadership team.

What You'll Do
Infrastructure Integration: Design and implement secure, scalable integrations bridging our trading engine with the existing architecture of a large institutional bank.
Full-Stack Development: Build and maintain high-performance server-side services and responsive web interfaces for complex financial operations.
High-Load Engineering: Optimize services for low latency, multi-threaded data processing, and real-time streaming protocols (WebSockets).
Technical Communication: Collaborate directly with the bank's tech leads, architects, and our CTO to align on architectural decisions, APIs, and strict security protocols.
Engineering Standards: Write clean, reliable, and testable code, conduct rigorous code reviews, and help define architectural best practices.

AI-Native Approach (Strict Requirement)
Fluency in and active application of AI tools is a strict filter for this role. We are looking for an engineer whose daily development cycle is organically intertwined with AI assistants and agentic workflows:
Regular, hands-on use of modern tools (e.g., Claude Code, Cursor, MCP servers, GitHub Copilot) for code generation, architectural analysis, debugging, and routine automation.
Proven ability to significantly increase delivery speed and quality using AI tools without sacrificing code reliability or security.

Who You Are
You have deep domain knowledge in fintech, trading, banking, payment gateways, or exchange platforms.
You possess a proven track record of building distributed, high-load systems with stringent fault-tolerance and security requirements.
Strong Communicator: You can confidently defend architectural decisions on a technical level in front of C-level executives and enterprise banking teams.
Fast Learner: You are ready to dive deep into the architecture and business logic of our existing products, supported by our team's mentorship and onboarding.

Qualifications
English: Upper-Intermediate or Fluent (confident in leading technical negotiations and writing documentation).
Experience: 5+ years of commercial development experience as a Full-Stack or Senior Backend Engineer.
Backend Stack: Deep knowledge of server-side technologies: Node.js/TypeScript, RESTful API design, WebSockets, and message queues.
Frontend Stack: Strong command of the modern web stack (React.js, TypeScript, state management) for building data-heavy interfaces.
Data & Infrastructure: Experience with relational databases, complex SQL optimization, CI/CD pipelines, and containerization.

Bonus Points:
Experience integrating with core banking systems, FIX protocols, or financial institution Open APIs.
Understanding of market mechanics, liquidity, and order books.

We Offer
Flexibility & Hubs: Flexible working hours with physical office access in Poland (Wroclaw) and Ukraine.
Health & Wellness: Medical Insurance in Ukraine and a Multisport program in Poland.
Time Off: Paid vacation, sick leaves, and all official holidays.
Growth: Access to educational programs and corporate English classes up to three times a week.
Equipment: Top-tier hardware and development gear provided.
Contractor Support: Complete tax and accounting services handled for Ukrainian contractors.
Culture: Regular team-building, tech events, and an advanced bonus system.

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