Senior Full-Stack Engineer (Fintech, Trading and Banking)
Primary stack
Nice to have's
Job description
About the Position
We are seeking a Senior Full-Stack Engineer with expertise in fintech, trading, and banking to join our team and drive a major integration project with a leading bank.
About the Company
Our client is a financial technology services provider dedicated to expanding global access to digital assets by building innovative solutions in 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.
Responsibilities
- 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., modern AI tools) 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.
Requirements
- Domain Knowledge: Deep knowledge in fintech, trading, banking, payment gateways, or exchange platforms.
- Experience: 5+ years of commercial development experience as a Full-Stack or Senior Backend Engineer.
- Technical Skills:
- 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.
- Communication Skills: Strong communicator who can confidently defend architectural decisions on a technical level in front of C-level executives and enterprise banking teams.
- Language: Upper-Intermediate or Fluent English (confident in leading technical negotiations and writing documentation).
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.
Apply Now
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DevBrotheris an international AI-driven software development agency with a strong focus on Web3, AI and Biotech, operating across the USA, Canada, and Europe. We offer full-cycle product development and support — from web and mobile apps to QA testing, DevSecOps, UI/UX design, and IT staff augmentation. Our unique Remote Team Extension model is powered by one of the largest software engineer databases in Europe, including a community of 30K+ vetted developers, primarily based in Eastern Europe. This allows us to build dedicated teams and deliver high-quality, tailored solutions to our clients. We also provide comprehensive remote work support — including office spaces, recruiting, hiring, management, administration, and infrastructure.The company mission:• We create a new quality of the connection between people in the IT industry based on the principles of pro-activity, humanity, and awareness.• The company goal is to give the client more than they expect, focusing on achieving the client’s goals and results.Our main clients are American crypto exchanges, Canadian art galleries from Toronto, one of the leaders in ticket sales for an event in the United States, a European startup for online booking of doctors, an analog of the American ZocDoc. Our products are mostly connected to fintech, healthcare, charts, crypto trading, real-time applications with chats and google maps, rating systems, online video platforms, etc.The services we offer:• Innovative Staff Augmentation Model• Web Development• Mobile Development• QA Automation and Manual Testing• DevSecOps• UI/UX Design• Remote Administration• IT Consulting• 24/7 Technical SupportWhy us?• Our approach to every work is not to execute, but first of all — to understand the goals and provide our clients with the best solution in every unique situation — from big plannings to little development solutions.• We’re a company that has one of the biggest databases of Ukrainian developers based on partnership with CoWorking.• Our entire management has years of development experience, which means that you will feel understanding and clarity of the tasks that are set before you.We’re always looking for great people to join us. If you love software development or management and want to build the next great software company, DevBrother is for you.Please find more information about us here:devbrother.com
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