Staff Backend Engineer

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 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 At Koyfin, impact comes with responsibility. We expect independent thinking, sound judgment, and ownership of outcomes. We value clear communication, intellectual honesty, and continuous improvement. You’ll be trusted to make decisions, contribute thoughtfully, and raise the standard of the work around you. Our hiring process is thoughtful and efficient, typically including an HR conversation, role-specific interviews, and a final discussion with leadership. Koyfin is an equal opportunity employer committed to building a diverse and inclusive team. #J-18808-Ljbffr