# Mid level on-site backend developer jobs

> Browse mid level on-site backend developer jobs 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=backend&level=mid&workplace=onsite
Last updated: 2026-10-25

112 open jobs, page 1 of 5, newest first. Each job links to its posting on the company's own applicant tracking system, which the Lazee extension autofills.

## Jobs

- [Software Engineer, Backend (All Levels)](https://www.workatastartup.com/jobs/115060) at Zip. San Francisco · On-site · Full-time · posted 2026-10-07. Apply on Y Combinator.
- [Software Engineer, Backend (All Levels)](https://www.workatastartup.com/jobs/115061) at Zip. Toronto · On-site · Full-time · posted 2026-10-07. Apply on Y Combinator.
- [Software Engineer, Multimodal Backend Systems](https://www.workatastartup.com/jobs/114722) at Eventual. San Francisco, CA, US · On-site · Full-time · $150K - $250K · posted 2026-10-06. Apply on Y Combinator.
- [Founding Engineer](https://www.workatastartup.com/jobs/114326) at Limrun. Istanbul, İstanbul, TR · On-site · Full-time · $75K - $180K · posted 2026-10-05. Apply on Y Combinator.
- [Founding Engineer](https://www.workatastartup.com/jobs/114400) at Hubble. Seattle, WA, US · On-site · Full-time · $150K - $200K + 1.00% - 3.00% equity · posted 2026-10-05. Apply on Y Combinator.
- [Backend Engineer](https://www.workatastartup.com/jobs/112528) at Mintlify. San Francisco · On-site · Full-time · $130K - $200K · posted 2026-09-28. Apply on Y Combinator.
- [xEngineer (Backend oriented), Premium Billing Platform](https://jobs.smartrecruiters.com/Wix2/744000152028049) at Wix. Tel Aviv-Yafo, Tel Aviv District, Israel · On-site · Full-time · posted 2026-09-27. Apply on SmartRecruiters.
- [Founding Software Engineer](https://www.workatastartup.com/jobs/111227) at Copperlane. San Francisco, CA, US · On-site · Full-time · $140K - $220K + 0.50% - 2.00% equity · posted 2026-09-25. Apply on Y Combinator.
- [Engineer - Backend](https://www.workatastartup.com/jobs/111393) at DiligenceSquared. New York City · On-site · Full-time · $160K - $200K · posted 2026-09-25. Apply on Y Combinator.
- [Software Engineer (Backend)](https://www.workatastartup.com/jobs/110256) at Kobalt Labs. New York City · On-site · Full-time · $250K · posted 2026-09-25. Apply on Y Combinator.
- [Backend Engineer, Generalist](https://www.workatastartup.com/jobs/112032) at Lapel. San Francisco · On-site · Full-time · $150K - $250K · posted 2026-09-25. Apply on Y Combinator.
- [Backend Engineer, Agents](https://www.workatastartup.com/jobs/112031) at Lapel. San Francisco · On-site · Full-time · $150K - $250K · posted 2026-09-25. Apply on Y Combinator.
- [Backend Engineer, Core Platform](https://www.workatastartup.com/jobs/112030) at Lapel. San Francisco · On-site · Full-time · $150K - $250K · posted 2026-09-25. Apply on Y Combinator.
- [Backend Engineer, Primitives](https://www.workatastartup.com/jobs/112029) at Lapel. San Francisco · On-site · Full-time · $150K - $250K · posted 2026-09-25. Apply on Y Combinator.
- [Founding Engineer](https://www.workatastartup.com/jobs/110499) at Limrun. San Francisco, CA, US · On-site · Full-time · $180K - $300K · posted 2026-09-25. Apply on Y Combinator.
- [Member of Technical Staff | Engineering & Research](https://www.workatastartup.com/jobs/106868) at attimet. San Francisco, CA, US · On-site · Full-time · $125K - $250K + 0.10% - 1.00% equity · posted 2026-08-26. Apply on Y Combinator.
- [Backend Engineer](https://www.workatastartup.com/jobs/108551) at 222. New York, NY, US · On-site · Full-time · $165K - $275K · posted 2026-08-26. Apply on Y Combinator.
- [Member of Technical Staff (Product)](https://www.workatastartup.com/jobs/104831) at Jarmin. San Francisco, CA, US · On-site · Full-time · $200K - $300K + 0.25% - 1.00% equity · posted 2026-08-26. Apply on Y Combinator.
- [Member of Technical Staff (Agents)](https://www.workatastartup.com/jobs/104830) at Jarmin. San Francisco, CA, US · On-site · Full-time · $200K - $300K + 0.25% - 1.00% equity · posted 2026-08-26. Apply on Y Combinator.
- [Member of Technical Staff (Agent Infrastructure)](https://www.workatastartup.com/jobs/104829) at Jarmin. San Francisco, CA, US · On-site · Full-time · $200K - $300K + 0.25% - 1.00% equity · posted 2026-08-26. Apply on Y Combinator.
- [Founding Engineer](https://www.workatastartup.com/jobs/107957) at SubImage. San Francisco, CA, US · On-site · Full-time · $170K - $230K + 0.50% - 1.00% equity · posted 2026-08-26. Apply on Y Combinator.
- [Product Engineer](https://www.workatastartup.com/jobs/105465) at primitive. San Francisco, CA, US · On-site · Full-time · $190K - $230K + 0.25% - 0.75% equity · posted 2026-08-26. Apply on Y Combinator.
- [Backend Engineer](https://www.workatastartup.com/jobs/106736) at Cardboard. Bengaluru · On-site · Full-time · posted 2026-08-26. Apply on Y Combinator.
- [Backend Engineer, Payments](https://www.workatastartup.com/jobs/105814) at Chariot. Chariot HQ · On-site · Full-time · $180K - $230K · posted 2026-08-26. Apply on Y Combinator.
- [Product Engineer, Backend](https://www.workatastartup.com/jobs/104495) at David AI. San Francisco · On-site · Full-time · $165K - $225K · posted 2026-08-26. Apply on Y Combinator.

Next page: https://lazee.dev/careers?role=backend&level=mid&workplace=onsite&page=2

## Broader searches

- [Mid level on-site tech jobs](https://lazee.dev/careers?level=mid&workplace=onsite) (3,369 jobs)
- [Mid level backend developer jobs](https://lazee.dev/careers?role=backend&level=mid) (259 jobs)
- [On-site backend developer jobs](https://lazee.dev/careers?role=backend&workplace=onsite) (200 jobs)

## Browse by role

- [Mid level on-site engineering jobs](https://lazee.dev/careers?role=engineering&level=mid&workplace=onsite) (1,483 jobs)
- [Mid level on-site full stack developer jobs](https://lazee.dev/careers?role=fullstack&level=mid&workplace=onsite) (559 jobs)
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- [Mid level on-site hardware engineer jobs](https://lazee.dev/careers?role=hardware&level=mid&workplace=onsite) (169 jobs)
- [Mid level on-site software engineer jobs](https://lazee.dev/careers?role=software&level=mid&workplace=onsite) (145 jobs)
- [Mid level on-site marketing jobs](https://lazee.dev/careers?role=marketing&level=mid&workplace=onsite) (142 jobs)
- [Mid level on-site design jobs](https://lazee.dev/careers?role=design&level=mid&workplace=onsite) (104 jobs)
- [Mid level on-site product manager jobs](https://lazee.dev/careers?role=product&level=mid&workplace=onsite) (95 jobs)
- [Mid level on-site DevOps jobs](https://lazee.dev/careers?role=devops&level=mid&workplace=onsite) (58 jobs)
- [Mid level on-site data jobs](https://lazee.dev/careers?role=data&level=mid&workplace=onsite) (45 jobs)
- [Mid level on-site security jobs](https://lazee.dev/careers?role=security&level=mid&workplace=onsite) (45 jobs)
- [Mid level on-site frontend developer jobs](https://lazee.dev/careers?role=frontend&level=mid&workplace=onsite) (37 jobs)
- [Mid level on-site mobile developer jobs](https://lazee.dev/careers?role=mobile&level=mid&workplace=onsite) (18 jobs)
- [Mid level on-site QA jobs](https://lazee.dev/careers?role=qa&level=mid&workplace=onsite) (17 jobs)

## Browse by experience

- [Senior on-site backend developer jobs](https://lazee.dev/careers?role=backend&level=senior&workplace=onsite) (66 jobs)
- [Staff & principal on-site backend developer jobs](https://lazee.dev/careers?role=backend&level=staff&workplace=onsite) (16 jobs)

## Browse by workplace

- [Mid level remote backend developer jobs](https://lazee.dev/careers?role=backend&level=mid&workplace=remote) (84 jobs)
- [Mid level hybrid backend developer jobs](https://lazee.dev/careers?role=backend&level=mid&workplace=hybrid) (17 jobs)

## Related

- [Lazee.dev home: the job application autofill extension](https://lazee.dev)
- [Jobs API](https://lazee.dev/api)
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