# Software Engineers | All Levels at Antithesis

Software Engineers | All Levels at Antithesis in Vienna, VA, USA. On-site, full-time, paying $120k–$200k. Posted January 3, 2026.

- Company: Antithesis
- Location: Vienna, VA, USA
- Workplace: On-site
- Job type: Full-time
- Pay: $120k–$200k
- Posted: 2026-01-03
- Apply: https://jobs.ashbyhq.com/antithesis/4a547eb9-4fed-4c8d-baf1-8ad084797d96/application
- Source: https://jobmagic.ai/jobs/software-engineers-all-levels-antithesis-xsbc28

## Requirements

- Nix. Lots of Nix. Nix for builds, Nix for infrastructure. Nix where you did not expect!
- Rust for systems programming... and C/C++ where needed.
- Typescript (and JS) on the front end.
- All the other languages also: see our list of SDKs.

## Description

### **About Antithesis**

We provide a platform that enables engineering teams to identify and resolve bugs that traditional testing approaches miss. Antithesis runs your entire system in a deterministic simulation, breaks it in every way imaginable, and hands you a root cause and a perfect reproduction — no flaky tests, no false positives, no "works on my machine". This allows engineering teams to debug faster and ship with greater confidence.
The rise of AI-generated code has made what we do more important than ever. Agents can write code faster than any human — but faster code isn't better code if it's buggy, stuck in review, or **issues are** slipping through the cracks undetected. The verification bottleneck **is real and it's growing. This is exactly the problem Antithesis exists to solve. We've been quietly reinventing how the world thinks about software reliability, and we're just getting started.**
We're well-funded, deeply technical, and building **a platform that tackles one of the most complex yet important problems in modern software engineering.** If that sounds like fun to you, keep reading.

###
**About the Team**

Engineers at Antithesis work across a wide range of domains, often developing their own tools along the way. They dig deep to understand how something *really* works -- but stay broad to ship features across the whole stack. The ideal Antithesis engineer is a generalist who loves to learn new things and will fearlessly hack on whatever is needed. **The core requirements**: you're smart, get things done, and a joy to work with.
We're looking for **Senior, Staff, and Principal Engineers** to build the future of autonomous testing. No matter your particular field of experience, if you've been ambitiously building complex software and think you could be a fit; drop us a note.

The TechSome of the tech and languages we use:

- Nix. Lots of Nix. Nix for builds, Nix for infrastructure. Nix where you did not expect!

- Rust for systems programming... and C/C++ where needed.

- Typescript (and JS) on the front end.

- All the other languages also: see our list of SDKs.

The ProjectsWe're looking for top-flight engineers to help us build:

- A functional, reactive notebook

- A streaming, analytic database

- (Semi-) formally proven infrastructure

- A custom, high-performance hypervisor

- ...and other projects

The CultureOur team is comprised of people with a variety of backgrounds: standard engineering degrees to philosophy degrees; big-tech background to scrappy startups. But we have at least one common skill: everyone on the team, including managers, is held to the same high standard of engineering competency. In addition, we value in-person work for its value in building trust and sharing knowledge and mentoring each other.
*** 5 days a week in-office job in Vienna, VA***