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Antithesis

Autonomous software testing platform for deterministic bug detection.

Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
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Company facts

Series A-stage
Founded
2018
Employees
150
Headquarters
United States
Type
Private
Funding
Series A · $105M · 2025
Subsidiaries
Antithesis UK Limited

Open positions

5 jobs
Antithesis
22 views 4 weeks ago

Senior Software Engineer, Full Stack

Open 28d On-siteNorth AmericaSenior 2 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
Vienna, VA

Full-stack senior engineer building Antithesis's Notebook — a reactive computing platform (like Jupyter with auto-recalc) that all product UX runs on. Day to day: own features front-end to data layer (custom DB/proxy/API), write TypeScript with some Rust, author property-based tests, and develop Nix build/deployment logic.

AI API JavaScript Jupyter Rust +1 skills
160K – 220K $
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Antithesis
15 views 3 months ago

Senior Backend Engineer

Open 83d On-siteNorth AmericaContractSenior 4 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
Vienna, VA

Design and build core backend systems and a custom database (Pangolin) for a platform that simulates and breaks software to improve reliability.

AI API C++ Distributed Systems Observability +1 skills
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Antithesis
13 views 3 months ago

Senior Systems Engineer, Database

Open 83d On-siteNorth AmericaSenior 4 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
Vienna, VA

About Antithesis We've been quietly reinventing how the world thinks about software reliability, and we're just getting started! At Antithesis, we start at the foundations – we run entire software systems inside a…

AI Analytics AWS Backbone.js JavaScript +4 skills
170K – 250K $
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Antithesis
12 views 10 months ago

Software Engineers | All Levels

Open 141d On-siteNorth America 4 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
Vienna, VA

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…

AI C++ Rust TypeScript
120K – 200K $
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Antithesis
21 views 10 months ago

Engineering Manager

Open 141d On-siteNorth America 4 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
Vienna, VA

About Antithesis We've been quietly reinventing how the world thinks about software reliability, and we're just getting started! At Antithesis, we start at the foundations – we run entire software systems inside a…

AI C++ Developer Experience Distributed Systems Infrastructure as Code +7 skills
185K – 250K $
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