# Senior Backend Engineer at Antithesis

- Company: Antithesis
- What the company does: Antithesis is an autonomous software testing platform that finds the bugs others miss. Backed by Amplify.
- Company website: https://antithesis.com
- Type: Startups
- Level: Senior
- Location: Vienna, VA, USA
- Work setup: On-site
- Posted: 2026-08-13
- Apply by: 2026-10-08
- Apply: https://jobs.ashbyhq.com/antithesis/ec9dbcdf-17fd-4a0e-812a-33fc9eae1132
- Page: https://www.1752.vc/careers/jobs/antithesis-senior-backend-engineer/

## About the role

The Platform team is the engine room of Antithesis — we own the infrastructure, services, and tools that are at the core of the product. As a Senior Backend Engineer here, you won't be maintaining someone else's abstractions. You'll be designing them from scratch, owning them end-to-end, across the full stack: from raw binary formats and block compaction all the way up to the external APIs our customers depend on. Correctness and performance aren't nice-to-haves here — they're the job.

## What they're looking for

- 5+ years of software engineering experience. Rust is a strong preference, but exceptional systems engineers from other backgrounds are welcome
- Experience building APIs, services, storage engines, query engines, or data-intensive backend systems
- Deep understanding of distributed systems: consistency, fault tolerance, replication, observability
- Hands-on experience designing and shipping APIs with attention to correctness and contract stability
- Strong fundamentals — you care about correctness, test coverage, and well-designed abstractions
- Bonus: query planning/optimization experience, multi-tenant platform or authz background, C/C++ familiarity, or open-source contributions

Tags: Antithesis