Backend Tech Lead - Banking

Ready to architect fintech solutions with AI at your side? We're assembling an AI‑enhanced product‑delivery team in Poland in partnership with Rimthan Corporate Venture Builder (Riyadh, Saudi Arabia). If you love Node.js, banking system integrations, and experimenting with cutting‑edge AI dev tools like Claude Code, let's talk!

The Opportunity

• Code smarter, ship faster with Claude Code, Vibe Coding, Cursor/Windsurf, and whatever ingenious tools you suggest.

• Design & build robust banking APIs, financial microservices, and secure server architectures in Node.js.

• Develop our AI‑native platform for developers - your feedback and features go straight into the product roadmap.

• Collaborate remotely with frontend developers, designers, PMs, and engineers across Poland and Saudi Arabia on several ventures at once.

• Own the backend lifecycle: architect, implement, optimize, monitor, and scale financial systems.

• Champion best practices in banking API design, financial data security, compliance, and DevOps automation.

Why You'll Love Working with Us

• AI at the Core - We're not just using AI; we're building AI tools that make developers 10× more productive - and you'll be a key contributor.

• Remote‑First Freedom - Work anywhere in Europe. Flexible hours and a supportive culture focused on outcomes, not clock‑watching.

• Startup Energy + Venture‑Studio Stability - Tackle new ideas every quarter with the backing of an established venture builder.

• Competitive B2B Compensation - 20 000-30 000 PLN / month (depending on experience) and learning budget.

• Continuous Growth - Access to conferences, AI workshops, and internal hackathons to keep your skills razor‑sharp.

• Friendly, Multicultural Team - Collaborate daily with passionate engineers and product folks who love clean code, good memes, and sharing knowledge.
  

You Might Be a Good Fit If You…

• Have deep experience building production Node.js applications with banking system integrations, payment processing, or financial APIs.

• Are fluent with banking protocols (ISO 20022, SWIFT, Open Banking APIs), payment gateways (Stripe, PayPal, Adyen), and financial data formats.

• Have proven experience with core banking integrations, PCI DSS compliance, financial transaction processing, and regulatory requirements (PSD2, GDPR).

• Are fluent with databases (PostgreSQL/MongoDB/Redis), cloud platforms (AWS, GCP, Azure), and modern backend architectures (microservices, serverless, event‑driven systems).

• Understand financial system scalability and can design secure systems that handle high-volume transactions and sensitive financial data.

• Experience with regulatory compliance in fintech environments and understanding of financial industry security standards.

• Have already experimented with Claude Code or other AI pair‑programming tools - and can't imagine coding without them.

• Master modern JavaScript/TypeScript, secure coding practices, encryption, fraud detection systems, and financial data validation.

• Communicate confidently in English (Polish is a bonus - many teammates are Polish).

• Thrive in fast‑paced, ambiguous environments where you switch between projects and wear many hats.

• Believe in craftsmanship - automated testing, clean architecture, security best practices, and performance optimization are second nature.
  

About Our Partnership

Rimthan Corporate Venture Builder launches and scales digital ventures across the Middle East. We're their dedicated Polish delivery powerhouse, bringing European engineering excellence to a global portfolio of disruptive products. Together, we combine startup agility with enterprise‑grade resources - so your code reaches real users fast.

Sound like your kind of challenge? Let's build AI‑powered banking systems the world hasn't seen yet!