Unknown Company

Senior Software Engineer, Full Stack

san francisco, ca • Posted 4 days ago
Onsite Full Time IT & Technology

Responsibilities

  • Lead efforts for often ambiguous technical projects, laying the groundwork for early-stage products to iteratively evolve and scale.
  • Design, build, and maintain APIs, user-facing experiences, services, and systems.
  • Make effective tradeoffs between business priorities, user experience, and reliability.
  • Work with critical frontend, backend & platform projects end-to-end—from design to production ops.
  • Push architecture that scales to billions in annual payment volume and real-time risk controls.
  • Work closely with product and GTM leads to turn ambiguous problems into elegant code.

Qualifications

  • Have 5+ years of professional experience building B2B or B2C SaaS products (FinTech, payments, or marketplace a plus).
  • Thriving in zero-bureaucracy, high-ownership environments.
  • Balance speed with rigor—automated tests, clean abstractions, clear docs.
  • Can participate in architecture discussions and still dive deep into code (we use React, Ruby, Postgres but great engineers pick up tools fast).
  • Communicate crisply across time zones.
  • This role is required to be in office 4 days/week (Mon-Thurs) either in San Francisco Bay Area or New York .

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