Senior Software Engineer

5 days ago

New York, New York, United States twentyAI Full time $120,000 - $180,000 per year

Senior Software Engineer — Series A FinTech Startup


New York City On Site


Full-Time | VC-Backed | Impact-Driven

I'm partnered with a fast-growing
Series A FinTech startup
,
YC-backed with significant runway
. The team is small, sharp, and mission-driven—and we're looking for a
Senior Software Engineer
who's excited to build high-impact products in a 0→1 environment.

If you want to own meaningful technical decisions, ship fast, and shape the future of financial technology, this role is for you.

What You'll Do

  • Design, build, and scale core product features across our AI-driven platform
  • Work across the stack (backend or frontend leaning—your choice)
  • Collaborate closely with cofounders to translate complex problems into elegant solutions
  • Own projects end-to-end, from architecture to deployment
  • Contribute to an engineering culture focused on quality, velocity, and learning

What We're Looking For

  • 4+ years
    of software engineering experience
  • Start-up or 0-1 product experience. Self-starter mindset.
  • Strong proficiency in
    Python
    and
    AWS
  • Experience with modern frameworks (e.g., React, , FastAPI, Django, TypeScript, or similar)
  • Bachelor's degree in
    Computer Science, Mathematics, Engineering
    , or equivalent field

Why Join Us

  • Build real products with real world impact
  • High ownership, fast learning, and the ability to influence technical strategy
  • Competitive compensation + meaningful equity
  • Strong YC network, long runway, and top-tier investor backing
  • Opportunity to grow into tech lead or staff-level roles as we scale

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