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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

8 jobs
Antithesis
9 views 4 weeks ago

Senior Account Executive - PNW

Open 28d 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
San Francisco, CA

About Antithesis Antithesis helps engineering teams find and fix bugs that traditional testing misses. Our platform runs entire systems in deterministic simulation, exploring how they can fail, and gives engineers the…

Account Executive AI Business Development Cloud Observability +3 skills
275K – 320K $
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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
7 views 3 months ago

Senior Field Marketing Manager

Open 84d On-siteUKContractSenior 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 Kingdom
London

About Antithesis We’re on a mission to redefine how modern distributed systems are tested and released. Our platform is trusted by engineering teams who demand rock-solid reliability, scalable performance, and deep…

Bash Cloud Contract Negotiation Demand Generation Distributed Systems +4 skills
75K – 105K £
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Antithesis
13 views 7 months ago

Senior Solutions Engineer

Open 141d 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
San Francisco, CA

About Antithesis We’re on a mission to redefine how modern distributed systems are tested and released. Our platform is trusted by engineering teams who demand rock-solid reliability, scalable performance, and deep…

Bash Containerization Customer Onboarding Distributed Systems Docker +9 skills
175K – 220K $
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Antithesis
11 views 9 months ago

Senior Account Executive

Open 141d On-siteNorth America, UKSenior 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.
London

About Antithesis Antithesis helps engineering teams find and fix bugs that traditional testing misses. Our platform runs entire systems in a deterministic simulation, breaks them in every imaginable way, and provides…

Account Executive AI Root Cause Analysis SaaS Sales Engineering
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Antithesis
10 views 9 months ago

Senior Account Executive

Open 141d RemoteNorth 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
New York

About Antithesis Antithesis helps engineering teams find and fix bugs that traditional testing misses. Our platform runs entire systems in a deterministic simulation, breaks them in every imaginable way, and provides…

Account Executive AI Fintech Root Cause Analysis SaaS +1 skills
275K – 320K $
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