---
title: 'Senior Product Manager at Antithesis'
canonical: 'https://feeny.ai/job/senior-product-manager-antithesis-vienna-va-8myqrn0hpj3w'
type: 'job'
last_seen: '2026-09-13'
---

# Senior Product Manager at Antithesis

- **Company:** Antithesis
- **Location:** Vienna VA, United States
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-02-17
- **Last confirmed live:** 2026-09-13
- **Apply:** https://jobs.ashbyhq.com/antithesis/a0b25dfa-73fa-4ea7-87f9-f038b8ab82c6/application

**Skills:** Product Management, Product Strategy, Metrics and KPIs, Technical Fluency, Developer Tools, Infrastructure, Testing, Security, APIs, Kubernetes, Distributed Systems, Secure Deployments

> The Senior Product Manager will build out the product function at Antithesis, a startup developing software testing platforms using fuzzing and property-based techniques. This role involves defining product areas, shaping workflows, and partnering with engineering to establish durable foundations in a high-ambiguity...

## Job description

## About Antithesis

Antithesis is building a fundamentally new approach to software testing. Our platform uses advanced fuzzing and property-based testing techniques to find deep bugs in customer software and exercise systems in ways that traditional testing cannot. We are in the early stages of productizing a powerful underlying technology. That means much of our product surface, operating model, and customer workflows are still being defined. This is a high-ambiguity, 0→1 environment where product judgment matters.

## About the Role

We are hiring a Senior Product Manager to help build out the product function at Antithesis. This is not a purely executional role inside an established system. You will operate in a fast-moving, technical environment where many decisions are first-of-their-kind. You will help define product areas, shape workflows, influence prioritization, determine how we measure success, and partner closely with engineering and design to build durable foundations. You will mentor other PMs and help raise the bar for product thinking and practice across the team. Formal people management experience is a plus, but not required. This role is for someone who has built new products or major product surfaces from scratch and is comfortable making high-stakes tradeoffs under uncertainty.

What you’ll do:

- Own one or more major product areas (e.g., onboarding/setup, VPC/on-prem, API, test lifecycle, debugging, fault tolerance testing) end-to-end
- Conduct discovery sessions with customers and understand their needs
- Define clear problem statements and outcomes in ambiguous environments
- Make principled tradeoffs between speed, scope, and technical constraints
- Partner deeply with engineering on complex technical systems
- Influence product strategy and long-term direction
- Define metrics and success criteria
- Help shape product standards and raise the bar for product craft

What we’re looking for:

- Strong Signals:
- Startup experience
- Demonstrated 0→1 product experience (built something new, not just optimized an existing system)
- Comfort operating in high-ambiguity, fast-changing environments
- Experience in developer tools, infrastructure, testing, security, or similar technical domains
- Strong technical fluency (engineering background is a plus)
- Evidence of product judgment under uncertainty
- Experience influencing strategy and prioritization
- Clear, structured written communication
- Defined and used metrics / KPIs to drive decisions
- Bonus Signals:
- Early member of a product team that scaled
- Mentored or hired PMs
- Helped establish product standards or practices
- Experience with APIs, developer abstractions, Kubernetes, secure deployments, or distributed systems

Not a Fit If

- Your primary focus has been implementing product frameworks (e.g., Scrum/Agile) rather than building products
- You primarily optimized mature systems rather than creating new ones
- You prefer well-defined environments over ambiguous ones

## Why This Role Is Different

- You won’t be plugging into an established PM machine. You’ll help build it.
- This is an opportunity to shape how product works at a deeply technical company while directly influencing the trajectory of a novel platform.

## 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)

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