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.




Salary.com Estimation for Senior Fullstack Engineer in San Francisco, CA
$157,549 to $188,589
If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a Senior Fullstack Engineer?

Sign up to receive alerts about other jobs on the Senior Fullstack Engineer career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$146,673 - $180,130
Income Estimation: 
$176,149 - $220,529
Income Estimation: 
$73,784 - $86,677
Income Estimation: 
$90,372 - $103,622
Income Estimation: 
$61,825 - $80,560
Income Estimation: 
$90,032 - $105,965
Income Estimation: 
$85,996 - $102,718
Income Estimation: 
$85,996 - $102,718
Income Estimation: 
$111,859 - $131,446
Income Estimation: 
$110,457 - $133,106
Income Estimation: 
$105,809 - $128,724
Income Estimation: 
$122,763 - $145,698
Income Estimation: 
$105,809 - $128,724
Income Estimation: 
$136,611 - $163,397
Income Estimation: 
$135,163 - $163,519
Income Estimation: 
$131,953 - $159,624
Income Estimation: 
$150,859 - $181,127
Income Estimation: 
$131,953 - $159,624
Income Estimation: 
$169,825 - $204,021
Income Estimation: 
$166,631 - $195,636
Income Estimation: 
$162,237 - $199,353
Income Estimation: 
$181,083 - $218,117
This job has expired.
Employees: Get a Salary Increase
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Not the job you're looking for? Here are some other Senior Fullstack Engineer jobs in the San Francisco, CA area that may be a better fit.

  • Nexus Venture Partners San Francisco, CA
  • Who Are We? Postman is the world’s leading API platform, used by more than 45 million developers and 500,000 organizations, including 98% of the Fortune 50... more
  • 1 Day Ago

  • Nooks San Francisco, CA
  • About Nooks.ai Nooks is the AI Sales Assistant Platform (ASAP) that automates the busywork so reps can focus on the human part of selling and generate more... more
  • 9 Days Ago

AI Assistant is available now!

Feel free to start your new journey!