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, 01 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 01 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.
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