- Level: Tech Lead
- Type: B2B
- English Level: Advanced
- Location: Europe/UK
- Skills: Node.js TypeScript
Responsibilities
- Drive the architecture and technical roadmap for core backend services
- Lead the design and implementation of scalable APIs and data processing pipelines
- Guide critical initiatives that impact multiple teams and business areas
- Collaborate with engineering leadership to raise the bar on system performance, reliability, and maintainability
- Mentor engineers across teams and foster a culture of technical ownership
- Debug and optimize distributed systems and large-scale data flows
- Act as a force multiplier – identifying gaps, proposing solutions, and enabling others to move faster
- Work with modern technologies including TypeScript, Node.js, NestJS, PostgreSQL, MongoDB, AWS, and Kubernetes
What We’re Looking For
- 10+ years of experience in software engineering, with deep backend expertise
- Proven experience designing and evolving backend architecture at scale
- Knowledge of design patterns, algorithms, and system architecture
- Strong knowledge of Node.js, NestJS (or similar), SQL, NoSQL, distributed systems, and caching strategies
- Clear, concise communication skills – able to influence across functions and levels
- Strong leadership qualities – capable of setting technical direction and rallying teams around it
- Advanced English, both written and spoken
Bonus Points
- Prior experience in a fintech or data-heavy product company
- Hands-on experience with CI/CD pipelines, observability tools, and infrastructure as code
- Familiarity with frontend architectures and data visualizations
- Contributions to open-source or technical thought leadership (writing, talks, etc.)
What We Offer
- Remote-first work culture with flexible hours
- Competitive compensation with performance-based bonuses
- Health insurance or a monthly wellness stipend
- Additional vacation days to support a healthy work-life balance
- Access to a modern coworking space in Kyiv (optional)
- High-performance gear and resources to support your productivity
- Real impact – your decisions will shape the product and the company’s direction
- Strong team of kind, talented engineers who care deeply about the product and users
- Fast feedback loops – we ship quickly and learn from real users
- Autonomy and influence – take ownership of complex systems and drive meaningful change
- A product-led company with minimal bureaucracy and high trust in our people
Product
Koyfin is a rapidly growing fin-tech startup backed by some of the largest investors in Silicon Valley.
We are building a financial data and analytics platform for researching stocks and other asset classes through dashboards and charting. Our data coverage includes stocks, ETFs, mutual funds, FX, bonds, economics, news, and Twitter so you can have a god-like view of the markets. Koyfin is free, so go and try it!
