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David Careers

Senior Software Engineer (Fullstack)

Posted 6 days ago

hsfNew York (NY)
Software DevelopersCustom Computer Programming Services

SENIORITY

Senior

SALARY

$150,000 per year

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About the role

Senior Fullstack Engineer Tens of millions of shopper events flow through the systems every day, and every experiment the AI runs adds another piece of evidence about why people buy. You'll build the systems that capture that evidence, turn it into something a model can learn from, and put the model's ideas in front of real shoppers without breaking anything. It's hands-on work across the whole stack, on a small team where you'll design most of what you build.
Stack: mostly Python on serverless AWS, JavaScript on the frontend, and Postgres alongside ClickHouse. You'll love this job if: You want to work on an open research problem and still ship to production every week. You like moving across the stack, from a ClickHouse query to a dashboard screen, in the same week. You'd rather put a rough version in front of real data in three days than polish a design for a month. You get excited when a result surprises you and you have to figure out why.
What you bring:
  • 5+ years of experience
  • You've built and run production systems end to end, and you've fixed them when they broke. Python and JavaScript are the main languages, and you can pick up whichever one you know less.
  • You've worked with data at scale: event pipelines, streaming, or analytics databases.
  • You've led a major project or a small team, from the design decisions to the launch.
  • You've built with LLMs or other ML models, and you know where they fail.
Bonus: you've trained or deployed ML models in production, or you've built a product from zero at a startup. Values: Curiosity and excellence: Asking questions is the job. The team pushes on each other's ideas, and a failed experiment teaches as much as a winning one. Whatever it takes: If something needs doing, whoever can do it does it, whatever their title. Ownership: Shipping something is where the work starts. You follow it all the way to the result. Agility: Most ideas go from whiteboard to working prototype in two or three days. Enjoy the ride: Building something new comes with rough weeks. The team gets through them together. What's offered: Base salary $150K - $210K plus meaningful equity Medical, dental, and vision for you and your family Unlimited PTOTax-free commuter and parking benefits Office-first culture (4 days/week) in Midtown Manhattan Work directly with the founding team Free One Medical membership 401k

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