FERMÀT
Senior Software Engineer
$240K
San Francisco, CA +1 · Senior · Full-time · Posted Feb 2, 2026
- Location
- San Francisco, CA
San Francisco, California, United States - Experience
- 4+ years of professional software engineering experience.
About the job
Build and own high-impact commerce platform initiatives across infrastructure, customer-facing features, data systems, internal tools, and new products.
What you'll do
- Own initiatives from concept through production; prototype and iterate based on user feedback and business impact.
- Design and build scalable backend services, APIs, and frontend experiences across the stack.
- Contribute to architectural decisions and improve engineering quality and velocity through AI tooling.
What they ask for
- 4+ years of professional software engineering experience.
- Experience as a founder or early engineer at a startup.
- Strong product sense and a track record of shipping meaningful features or products.
- Experience using LLMs and modern coding agents, with strong systems design fundamentals and comfort owning production systems.
Pay
$200-$240k USD base salary
Tools
LLMs
AI focus
Use LLMs, modern coding agents, and other AI tools to increase engineering velocity, improve quality, and explore solutions faster.
Model-written summary · the original posting is authoritative