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Senior Software Engineer

FERMÀT· Engineering
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Hybrid (San Francisco, CA)$200k - $240kfull-timePosted 7mo ago

About the role

Senior Software Engineer at FERMÀT in San Francisco, CA. The role is cross-cutting across core infrastructure, customer-facing features, data systems, internal tooling, and new product initiatives. Emphasis on AI-native workflows, shipping meaningful outcomes, and owning problems end-to-end.

Responsibilities

  • Own high-impact initiatives from concept through production.
  • Design and build scalable backend services, APIs, and frontend experiences.
  • Prototype quickly and iterate based on user feedback and business impact.
  • Move fluidly across different parts of the stack as company needs evolve.
  • Improve engineering quality and velocity through thoughtful use of AI tooling.
  • Contribute to architectural decisions and help raise the bar across engineering.

Qualifications

  • 4+ years of professional software engineering experience.
  • Experience as a founder, or as an early engineer at a startup.
  • Strong product sense and a track record of shipping meaningful features or products.
  • AI native workflow: you actively use LLMs and modern coding agents to meaningfully increase leverage.
  • Ability to work across multiple stacks without rigid specialization.
  • Strong systems design fundamentals and comfort owning production systems.
  • High agency, strong judgment, and comfort operating in ambiguity.
  • Clear communication and low-ego collaboration.

Skills

Required:AI-native workflowMultistack proficiency

Benefits

  • Compensation: $200-$240k base + bonus
  • Comprehensive health, dental, and vision insurance for you and all your dependents.
  • US 401(k) plan with 4% matching
  • 4 months of paid parental leave
  • Unlimited PTO policy (with minimum 5 days PTO / quarter!)
Last updated Oct 1, 2026. Interested? Apply on the company site.

About FERMÀT

Tailor Every Touchpoint

FERMÀT is the AI native commerce platform that optimizes shopping experiences, leading to best-in-class shopper engagement and conversion.

AIecommercelanding pagesexperimentationfunnel managementshopper engagementconversion
Company profileWebsite

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