---
title: 'Applied AI Software Engineer, GTM at Antithesis'
canonical: 'https://feeny.ai/job/applied-ai-software-engineer-gtm-antithesis-vienna-va-62xsbyyvcham'
type: 'job'
last_seen: '2026-09-06'
---

# Applied AI Software Engineer, GTM at Antithesis

- **Company:** Antithesis
- **Location:** Vienna VA, United States
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-09-03
- **Last confirmed live:** 2026-09-06
- **Apply:** https://jobs.ashbyhq.com/antithesis/c491d4a1-1b5e-4f67-aeb3-99617b3b3357

## Job description

## 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 technical visibility. Our platform doesn’t just assure system correctness and reliability, it exists because developers need something better. If you’ve ever experienced the pain of a production outage, had a bad week on-call, or had a release delayed by weeks because of one killer bug – you’ll understand exactly why we’re doing what we do. If you're passionate about developer-first products, system resilience, and correctness, we’d love to talk.

## ABOUT THE ROLE

We’re hiring an Applied AI Software Engineer to build AI-native products to help our go-to-market and marketing teams.

You’ll work at the intersection of software engineering, applied AI, data, and GTM operations.

## WHAT YOU’LL DO

- Work directly with Sales, Marketing and RevOps to understand how they work, where they get stuck, and how they could do more with technology.
- Design, build, and ship full-stack products that use AI to help non-technical teams get work done.
- Build everything from lightweight agent workflows and automations to production applications for research, enrichment, account scoring, and other GTM problems.
- Make pragmatic build-versus-buy decisions. The right solution might use an existing tool, a reusable agent skill, a custom integration, or a full application.
- Partner with RevOps to integrate with the systems that GTM teams use like Salesforce, Marketo, and Gong.

Why Join Us?

- Join a collaborative, kind team supporting a rapidly-growing sales organization.
- Work with the resources - tools, teammates, and world-class experts - to do portfolio-worthy work.
- Use and explore AI in an environment that does not tolerate workslop.

## PREFERRED QUALIFICATIONS

- 4+ years of professional software engineering experience, including independently shipping and operating production systems.
- Experience shipping an LLM-powered product, feature, or workflow for real users. You understand the difference between an impressive prototype and a system people can depend on.
- Experience working directly with non-technical users to understand their workflows, test ideas, and improve products through feedback.
- Experience integrating with business systems such as Salesforce, HubSpot, Gong, Slack, or data-enrichment platforms.
- Strong product and engineering judgment. You can move quickly when the problem calls for an experiment and build for reliability when the solution becomes business critical.

Our current stack for internal GTM applications includes TypeScript, React, LangChain, and AWS. Experience with these tools is helpful, but we care more about strong engineering fundamentals and the ability to learn.

## About Antithesis

## Company Overview
- **One-liner**: Antithesis provides an autonomous software testing platform that uses deterministic simulation and state space exploration to exhaustively find and reproduce bugs in complex, distributed systems.
- **Entity Type**: Private (Series A)
- **Headquarters**: Vienna, Virginia, United States (with satellite offices in London, UK and San Francisco, California)
- **Founded**: 2018
- **Founders**: Will (CEO), Ben (CTO), and Dave (co-founder) – full last names not publicly disclosed

## Core Business
- **Primary industry/industries**: Software testing, autonomous reliability, developer tools, infrastructure software
- **Target customers**: B2B, Enterprise – companies building complex distributed systems (e.g., databases, cloud infrastructure, fintech, blockchain)
- **Mission or purpose statement**: “De‑risk agentic development of critical systems” by exposing bugs without human review, false positives, or risking production.

## Products & Services
- **Antithesis Platform**: A SaaS/on‑prem platform that runs a customer’s complete system in a fully deterministic, ephemeral simulation. It exhaustively analyzes behavior using fuzzing and state space exploration, automatically exposes bugs, provides a root cause and perfect reproduction, and arms developers (including AI agents) with high‑signal correctness feedback.

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Key Metric**: Total Funding – $182 M (latest round: $105 M Series A announced December 3, 2025)
- **Notable Investors/Partners**: Amplify Partners, Spark Capital, Tamarack Global, Patrick Collison, Sholto Douglas, and 31+ other investors. Customers include Jane Street, MongoDB, Confluent, and Tigris Data.
- **Growth Signals**: Launched out of stealth in 2024; 19 open job openings as of mid‑2026; customers report 40 × faster change verification, 10 × faster time‑to‑release, and discovery of severe bugs missed by all other testing.

## Competitive Advantages
- **Deterministic replay** of every bug found – eliminates the “cannot reproduce” problem.
- **Exhaustive state space exploration** that catches unknown unknowns without false positives.
- **Runs the entire system** (not unit/integration tests) – simulates production‑like conditions.
- **Already trusted by elite engineering teams** (e.g., quantitative trading firm Jane Street, leading database companies) – a strong reference moat.

## Strategic Focus
- Accelerate product innovation and expand support for **agentic development** – help AI agents build bug‑free code by providing high‑signal correctness feedback.
- Broaden platform coverage across **databases, cloud infrastructure, fintech, blockchain**, and other critical system domains.
- Scale go‑to‑market and customer success teams to meet enterprise demand.

## Why Work Here
- **Culture**: “Collaborative, highly technical, and customer‑focused” – deep‑tech environment solving hard distributed‑systems problems.
- **Work policy**: In‑office daily (Vienna, London, or San Francisco) to facilitate tackling difficult challenges together.
- **Perks & engineering culture**: Well‑funded startup with a long‑term mindset; team includes veterans from FoundationDB, Apple, Google, and MongoDB; emphasis on autonomy, technical excellence, and fun.
- **Interview process**: Transparent and respectful – they publish a “No Ghost Policy” and welcome unsolicited applications from talented candidates.

## Sources
1. [antithesis.com – Careers](https://antithesis.com/company/careers/)
2. [antithesis.com – Homepage](https://antithesis.com/)
3. [antithesis.com – Leadership](https://antithesis.com/company/leadership/)
4. [cbinsights.com – Antithesis Company Profile](https://www.cbinsights.com/company/antithesis)
5. [theconsensus.dev – Antithesis Profile](https://theconsensus.dev/company/antithesis.html)

## Other roles at Antithesis

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- [Senior Account Executive - Chicago](https://feeny.ai/job/senior-account-executive-chicago-antithesis-chicago-ef0mxxhzyfms) — Chicago, IL
- [Manager, Solutions Engineering](https://feeny.ai/job/manager-solutions-engineering-antithesis-london-c6ewnhykc1eg) — London, United Kingdom
- [Senior Backend Engineer](https://feeny.ai/job/senior-backend-engineer-antithesis-vienna-va-jdqgt1frp84e) — Vienna VA, United States
- [Senior Systems Engineer, Database](https://feeny.ai/job/senior-systems-engineer-database-antithesis-vienna-va-j7cxe4t6m83p) — Vienna VA, United States
- [Senior Field Marketing Manager](https://feeny.ai/job/senior-field-marketing-manager-antithesis-london-dmrqcddt9zag) — London, United Kingdom
- [Solutions Engineer](https://feeny.ai/job/solutions-engineer-antithesis-japan-29kecs9h5627) — Japan
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