Staff Backend Engineer - Koyfin

Koyfin is a fast growing fintech company building a powerful, intuitive analytics platform used by financial advisors and individual investors to research ideas, manage portfolios, and grow their businesses. We believe every investor deserves world-class research tools without the complexity or price tag of legacy platforms.

Our impact so far:

🚀 One of the fastest-growing platforms for financial advisors, driven by product-led growth 🥇 Recognized by users as a top-rated investment solution on G2 🏆 Rated as the top research platform for user satisfaction in the Kitces survey , the largest survey in the advisor industry

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

What we’re looking for

12+ 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

Strong leadership qualities — capable of setting technical direction and rallying teams around it

Clear, concise communication skills — able to influence across functions and levels

What we offer

Remote-first work culture with flexible hours

Competitive compensation with performance-based bonuses

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