
Senior Software Engineer
Fermat Commerce
Job description
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We’re looking for exceptional engineers who can operate across teams, stacks, and problem spaces, and turn ambitious ideas into production-grade systems
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This is not a narrowly scoped, team-specific role. You’ll work wherever impact is highest across our platform: core infrastructure, customer-facing features, data systems, internal tooling, or new product initiatives
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Own high-impact initiatives from concept through production
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Design and build scalable backend services, APIs, and frontend experiences
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Prototype quickly and iterate based on user feedback and business impact
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Move fluidly across different parts of the stack as company needs evolve
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Improve engineering quality and velocity through thoughtful use of AI tooling
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Contribute to architectural decisions and help raise the bar across engineering- We’re especially interested in engineers who are AI-native in their workflow. You use modern AI tools to increase velocity, improve quality, and explore solutions faster. You have strong product instincts, operate with high agency, and care deeply about shipping meaningful outcomes
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Experience as a founder, or as an early engineer at a startup
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High agency, strong judgment, and comfort operating in ambiguity
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Clear communication and low-ego collaboration
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Ability to work across multiple stacks without rigid specialization
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4+ years of professional software engineering experience
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Strong systems design fundamentals and comfort owning production systems
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Strong product sense and a track record of shipping meaningful features or products
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AI native workflow: you actively use LLMs and modern coding agents to meaningfully increase leverage- Please include GitHub, side projects, demos, or write-ups of products you’ve built. We prioritize engineers who consistently ship