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Jack & Jill

Senior Software Engineer at VC-backed B2B software platform

Jack & Jill, San Francisco, California, United States

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Senior Software Engineer at VC‑backed B2B software platform Join a fast‑growing, VC‑backed B2B software platform as a Senior Backend Engineer. This greenfield opportunity involves designing and building the core, resilient, scalable, and asynchronous backend infrastructure that will power the next generation of software transactions. You’ll be a key voice in technical direction, solving complex distributed systems problems and making a massive impact from day one.

Location: San Francisco, USA

Job Details

Seniority Level: Mid‑Senior level

Employment Type: Full‑time

Job Function: Engineering and Information Technology

Responsibilities

Design and build core backend services enabling complex, long‑running, and asynchronous operations.

Create foundational frameworks and libraries for the engineering team to build new product capabilities.

Partner with leadership to drive key technology and design decisions, establishing best practices.

Qualifications

A systems thinker who designs for resilience, scalability, and observability.

5+ years of experience in backend software engineering, including complex distributed systems.

Deep expertise in a modern backend language (e.g., Python, Go, Java) and event‑driven design.

How to Apply To apply for this job, speak to Jack, our AI recruiter, and follow the steps outlined on our website.

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