Demo

Senior Fullstack Engineer

RainesDev
San Francisco, CA Full Time
POSTED ON 10/28/2025 CLOSED ON 12/27/2025

What are the responsibilities and job description for the Senior Fullstack Engineer position at RainesDev?

You'll independently architect to roll-out large-scale projects, define the roadmap, and interact with customers, while working closely with the founders. Success in this role requires a resourceful, fast-paced engineer with a high-quality bar. Ideally, you've built something people use and enjoy tackling difficult problems. You'll focus on backend and infrastructure, but also work across the full stack.

Requirements

As a senior full stack engineer, you'll...

  • Ship end-to-end features -- design, code, test, deploy, and own them in production.

  • Work directly with users to turn feedback into improvements within hours, not days.

  • Build and operate both frontend and backend code that stays fast and reliable as traffic grows.

Support the team by reviewing PRs, sharing context, and mentoring junior engineers.


You'll be successful in this role if you…

  • Are a relentlessly resourceful engineer with experience building real-world applications, with a high bar for quality.

  • If you've personally built something people use, years of experience is basically irrelevant.

  • Can go from 0 to 1 building full stack applications.

  • Love tackling extremely difficult problems.

  • Enjoy learning and working in a very fast-paced environment.

  • Work well in a small team

  • 4 - 7 years of experience as a full-stack engineer in a top-performing engineering culture (ideally in a founding / founder role)



Benefits

Bonus points

  • Prior experience as a founder or founding engineer.

  • Strong sense of product taste.

  • Have built LLM-powered products.

  • Experience with Python, Typescript, React, TailwindCSS, Redux.




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Salary.com Estimation for Senior Fullstack Engineer in San Francisco, CA
$157,549 to $188,589
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