# Mid level full stack developer jobs in Seattle

> Browse mid level full stack developer jobs in Seattle at top tech companies, updated every 12 hours. Each role links to the original posting on the company's ATS, which Lazee autofills in a few clicks.

Canonical: https://lazee.dev/careers?role=fullstack&level=mid&city=seattle
Last updated: 2026-10-25

11 open jobs, page 1 of 1, newest first. Each job links to its posting on the company's own applicant tracking system, which the Lazee extension autofills.

## Jobs

- [Software Engineer III, Full Stack](https://www.google.com/about/careers/applications/jobs/results/88403015018390214) at Google. Seattle, WA, USA; Kirkland, WA, USA · posted 2026-10-09. Apply on Google Careers.
- [Systems Engineer](https://www.workatastartup.com/jobs/111985) at RADAR. San Diego, CA; Sunnyvale, CA; Seattle, WA; or New York, NY · On-site · Full-time · $147K - $220K · posted 2026-09-25. Apply on Y Combinator.
- [Software Engineer, Product](https://www.workatastartup.com/jobs/109813) at Prelim. New York, NY, US / Los Angeles, CA, US / San Francisco, CA, US / Austin, TX, US / Atlanta, GA, US / Chicago, IL, US / Seattle, WA, US / Boston, MA, US / Remote (New York, NY, US; Los Angeles, CA, US; San Francisco, CA, US; Austin, TX, US; Atlanta, GA, US; Chicago, IL, US; Seattle, WA, US; Boston, MA · Remote · Full-time · $140K - $160K · posted 2026-09-25. Apply on Y Combinator.
- [Software Engineer, Safety Experience](https://www.workatastartup.com/jobs/110382) at Whatnot. New York, NY / Los Angeles, CA / Seattle, WA / Remote (US) · Remote · Full-time · $170K - $230K · posted 2026-09-23. Apply on Y Combinator.
- [Software Engineer, Data Developer Platform](https://www.workatastartup.com/jobs/110374) at Whatnot. San Francisco, CA / New York, NY / Los Angeles, CA / Seattle, WA / Remote (US) · Remote · Full-time · $200K - $275K · posted 2026-09-23. Apply on Y Combinator.
- [Full-Stack Engineer](https://www.workatastartup.com/jobs/101225) at Kivo Health. Seattle · On-site · Full-time · $160K - $220K + 0.10% - 0.15% equity · posted 2026-07-27. Apply on Y Combinator.
- [Software Engineer, Full-Stack - Core Experimentation](https://jobs.ashbyhq.com/openai/73e56947-5d8b-414d-a0ac-9dc9b04e2406) at OpenAI. Seattle · Full-time · $347K – $445K • Offers Equity · posted 2026-03-17. Apply on Ashby.
- [Founding Engineer, Full Stack](https://www.workatastartup.com/jobs/89577) at Cloudglue. San Francisco, CA, US / Remote (Seattle, WA, US; Los Angeles, CA, US) · Remote · Full-time · $120K - $250K + 0.50% - 2.50% equity · posted 2026-01-28. Apply on Y Combinator.
- [Full Stack Engineer, Education Labs](https://job-boards.greenhouse.io/anthropic/jobs/5097186008) at Anthropic. San Francisco, CA | New York City, NY | Seattle, WA · posted 2026-01-27. Apply on Greenhouse.
- [Software Engineer](https://www.workatastartup.com/jobs/81752) at Casco. San Francisco, CA, US / Seattle, WA, US / Remote (US) · Remote · Full-time · $200K + 0.10% - 1.00% equity · posted 2025-10-25. Apply on Y Combinator.
- [Full Stack Software Engineer](https://www.workatastartup.com/jobs/30657) at Mason. Seattle, WA · On-site · Full-time · posted 2020-10-26. Apply on Y Combinator.

## Broader searches

- [Mid level jobs in Seattle](https://lazee.dev/careers?level=mid&city=seattle) (387 jobs)
- [Full stack developer jobs in Seattle](https://lazee.dev/careers?role=fullstack&city=seattle) (27 jobs)
- [Mid level full stack developer jobs](https://lazee.dev/careers?role=fullstack&level=mid) (1,107 jobs)

## Browse by role

- [Mid level engineering jobs in Seattle](https://lazee.dev/careers?role=engineering&level=mid&city=seattle) (160 jobs)
- [Mid level software engineer jobs in Seattle](https://lazee.dev/careers?role=software&level=mid&city=seattle) (54 jobs)
- [Mid level sales jobs in Seattle](https://lazee.dev/careers?role=sales&level=mid&city=seattle) (44 jobs)
- [Mid level product manager jobs in Seattle](https://lazee.dev/careers?role=product&level=mid&city=seattle) (43 jobs)
- [Mid level AI/ML engineer jobs in Seattle](https://lazee.dev/careers?role=ai-ml&level=mid&city=seattle) (40 jobs)
- [Mid level customer success jobs in Seattle](https://lazee.dev/careers?role=support&level=mid&city=seattle) (33 jobs)
- [Mid level security jobs in Seattle](https://lazee.dev/careers?role=security&level=mid&city=seattle) (25 jobs)
- [Mid level marketing jobs in Seattle](https://lazee.dev/careers?role=marketing&level=mid&city=seattle) (20 jobs)
- [Mid level data jobs in Seattle](https://lazee.dev/careers?role=data&level=mid&city=seattle) (10 jobs)

## Browse by city

- [Mid level full stack developer jobs in San Francisco](https://lazee.dev/careers?role=fullstack&level=mid&city=san-francisco) (387 jobs)
- [Mid level full stack developer jobs in New York](https://lazee.dev/careers?role=fullstack&level=mid&city=new-york) (168 jobs)
- [Mid level full stack developer jobs in London](https://lazee.dev/careers?role=fullstack&level=mid&city=london) (39 jobs)
- [Mid level full stack developer jobs in Los Angeles](https://lazee.dev/careers?role=fullstack&level=mid&city=los-angeles) (25 jobs)
- [Mid level full stack developer jobs in Bangalore](https://lazee.dev/careers?role=fullstack&level=mid&city=bangalore) (20 jobs)
- [Mid level full stack developer jobs in Chicago](https://lazee.dev/careers?role=fullstack&level=mid&city=chicago) (20 jobs)
- [Mid level full stack developer jobs in Toronto](https://lazee.dev/careers?role=fullstack&level=mid&city=toronto) (19 jobs)

## Related

- [Lazee.dev home: the job application autofill extension](https://lazee.dev)
- [Jobs API](https://lazee.dev/api)
- [About Lazee.dev](https://lazee.dev/about)
- [Privacy Policy](https://lazee.dev/privacy)
- [Terms of Service](https://lazee.dev/terms)