ONLY candidates with USC or GC need to apply

About the Role:

One of our start-up clients is looking for a Senior Full-Stack Software Engineer with 5+ years of experience to join a small, high-velocity engineering team building the first marketing and engagement platform purpose-built for credit unions. You'll own major product and infrastructure initiatives across the entire stack, from React frontends to Node/Express backends on AWS, shipping features end-to-end with real production impact on 185+ financial institution customers. This is a hands-on IC role with meaningful architectural influence, direct founder access, and the autonomy to identify problems and deliver solutions. We need someone who moves fast, communicates well, and is genuinely enjoyable to work with in a tight-knit, in-office environment.

What will you be doing?

• Building across the full stack (React/TypeScript frontend, Express/Node backend, DynamoDB, OpenSearch) with a 70/30 max split either direction
• Owning features end-to-end from technical design through development, testing, deployment, and monitoring
• Contributing to architecture discussions, design reviews, and code reviews to strengthen technical decisions
• Collaborating directly with the CTO, CPO, and engineering team to scope features and balance business priorities with technical sustainability

Role requirements

Seniority

5+ years of experience in full-​stack software engineering

Work experience

Early-​stage startup experience (fast-​paced team shipping full-​stack features end-​to-​end)

Worked across both frontend and backend (70/30 split max either direction)

Experience in fintech,​ payments,​ or B2B SaaS platforms

Hard skills

Proficient in React and TypeScript with backend experience (Node/Express)

AWS infrastructure experience (DynamoDB,​ OpenSearch,​ or similar)

CI/CD,​ automated testing,​ and production deployment workflows

Soft skills

Engaging and personable communicator:​ passes the "enjoyable to talk to" bar on a screening call

Miscellaneous

Must be in NYC and work in-​office 5 days/week

Salary

$170K - $210K

Equity

Competitive equity

On-site work policy

5 days in-office in Flatiron, New York City (with up to 10 WFH days per quarter)

Visa Sponsorship Details

Not open to any visas (e.g. US citizen, Green Card holders)

Full-time position