Full Stack Engineer

About the Role

Join a lean, four-person engineering team at a fast-growing Series A fintech startup building an AI-powered investing platform targeted at the next generation of investors. With millions of downloads and a rapidly scaling user base, this is a high-ownership, hands-on role at a critical inflection point in the company's growth.

You'll own the technical foundation across iOS, Node.js backend services, and AWS infrastructure — reporting directly to the Head of Engineering from our New York City office. Visa sponsorship is available.

What You'll Do

• Lead deep investigations into complex production issues spanning iOS, backend services, and cloud infrastructure.

• Perform root-cause analysis across API layers, async workflows, data models, third-party integrations, and infrastructure.

• Improve backend service reliability, correctness, and performance in Node.js and TypeScript.

• Optimize MongoDB queries, indexes, and data access patterns for performance at scale.

• Strengthen AWS infrastructure stability across Elastic Beanstalk, EC2, deployments, and monitoring.

• Improve observability using structured logging, metrics, and CloudWatch.

• Reduce recurring bug classes by improving validation layers, error handling, and system boundaries.

• Strengthen CI/CD and release processes to reduce production risk.

• Build internal tools and scripts that improve debugging efficiency and engineering velocity.

• Partner closely with product and engineering to drive platform-level improvements.

What We're Looking For

Required:

• 3–7+ years of engineering experience, including time at a startup and exposure to systems at scale.

• Strong production debugging skills — able to trace issues across iOS, backend, database, and AWS layers.

• Deep experience building and improving backend services in Node.js and TypeScript.

• Solid understanding of MongoDB performance, indexing, and data modeling.

• Hands-on experience operating and optimizing systems in AWS environments.

• High ownership mentality with clear, structured communication in fast-moving environments.

• Based in or willing to relocate to New York City.

Nice to Have:

• Comfort navigating and contributing to Swift and SwiftUI codebases.

• Background in fintech or payments.

• Strong CS fundamentals.

Compensation & Benefits

• Salary: $170,000 – $220,000 per year

• Equity participation in a well-funded, high-growth fintech startup

• Visa sponsorship available

Location

This is an on-site role based in New York City, NY. Candidates must be located in NYC or willing to relocate.