Staff Backend Engineer

Location: United States (Remote)

Type: Full-time

About the Role

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

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.

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

Requirements

• 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

About the Company

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.