Staff Backend Engineer

Overview

Koyfin is a fast-growing fintech product companies, building a powerful, intuitive analytics platform used by hundreds of thousands of investors around the world — from individual traders to top-tier financial advisors.

We believe every investor deserves world-class tools without the complexity or price tag of legacy platforms. That’s why we’ve built a sleek, customizable experience with robust data coverage and stunning visualizations to help users make smarter investment decisions.

Our impact so far:

• 🥇 One of the fastest-growing platforms for financial advisors, driven by product-led growth
• 🚀 Recognized by G2 as a top-rated analytics solution
• 📈 Consistent record-breaking growth in usage and revenue
• 💰 Cash flow positive — and proud of it

About the Role

We’re looking for a Staff Backend Engineer to lead the technical evolution of our platform as we scale from hundreds of thousands to millions of users. This role goes beyond coding — it requires system-level thinking, mentorship, and architectural leadership.As a Staff Engineer at Koyfin, you’ll partner closely with engineering leadership, product managers, and cross-functional teams to define and implement scalable systems that support the next stage of our growth. You’ll help shape the long-term technical vision while remaining hands-on with code and system design.If you thrive on tackling complex problems, driving engineering excellence, and mentoring others while building systems that directly impact investors around the world — we want to hear from you.

What you’ll be doing?

• 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

Who 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
• 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