Product Manager

About Antithesis

Antithesis is a developer tools company building a fundamentally new approach to software testing.

Our platform combines advanced fuzzing and property-based testing with large-scale deterministic simulation to find deep, correctness‑critical bugs that traditional approaches miss. We work with customers who care deeply about correctness, reliability, and trust in complex software systems.

Antithesis is in the early stages of productizing a powerful underlying technology
. While core capabilities exist and are already in use by customers, many workflows, abstractions, and product surfaces are still being shaped. This is an opportunity to help turn deep technical capability into a coherent, usable, and durable product over time.

We have recently formed a dedicated Product organization and are intentionally investing in product judgment, clarity, and long‑term coherence as we scale.

We’re hiring Product Managers to own meaningful parts of Antithesis’s product and help shape how it evolves over time. This role is about making good product decisions under ambiguity
. You’ll be responsible for framing problems, defining structure where little exists, making tradeoffs, and owning outcomes within one or more product areas. You’ll work closely with Engineering and Design, but you will not be a delivery manager or a requirements conduit. You should be excited about early‑stage product work
: defining workflows, clarifying abstractions, and making foundational decisions that will shape the product for years to come. Product Managers at Antithesis are expected to exercise judgment, take ownership, and care deeply about conceptual clarity and customer outcomes.

• Own product decisions within your area(s) of responsibility

  • Frame problems and define what success looks like

  • Prioritize work and make tradeoffs explicitly

  • Decide when to act independently and when to escalate

• Represent customer intent

  • Develop a deep understanding of customer workflows and goals

  • Interpret feedback and usage signals rather than relaying requests

  • Advocate for customer value in cross‑functional discussions

• Help productize complex technology

  • Turn powerful but abstract capabilities into usable workflows

  • Clarify concepts, terminology, and mental models

  • Identify where structure is missing and help define it

• Preserve product coherence

  • Care about abstractions, mental models, and consistency

  • Identify and address confusing or fragmented product experiences

  • Balance short‑term needs with long‑term clarity

• Partner with Engineering and Design

  • Collaborate closely and early

  • Respect technical and design constraints

  • Clarify intent and success criteria while leaving implementation details to Engineering

• Own outcomes over time

  • Follow decisions through their consequences

  • Learn from results and adjust course when needed

  • Take responsibility for how your area evolves, not just what ships

• Not a project or program management role

• Not a delivery or execution tracking role

• Not a proxy for stakeholder requests

• Not a purely tactical or feature‑factory PM role

We are explicitly looking for Product Managers who want to own decisions and outcomes
, not just process.

We’re looking for Product Managers who bring strong judgment and intellectual rigor.

You likely have:

• Experience owning product decisions in complex or technical domains

• Comfort operating with ambiguity and incomplete information

• Experience working on early or evolving products, not just scaled ones

• Strong reasoning and communication skills

• A bias toward action combined with thoughtful tradeoffs

Experience with developer tools, infrastructure, or technically sophisticated products is helpful, but not required.

Product Managers at Antithesis are evaluated on:

• The quality of their decisions

• The clarity of their reasoning

• The outcomes their product areas achieve over time

• Their ability to learn, adapt, and improve judgment

They are not evaluated on:

• Volume of shipped features

• Amount of documentation or process

• Personal heroics or overwork

• You’ll work on a product with real conceptual depth and technical ambition

• You’ll…