Senior/Staff Security Engineer
Cosmon
Senior/Staff Security Engineer
Cosmon
AI-powered CAE platform for design optimization
Cosmon is building the AI infrastructure that helps hardware engineers design and build the next generation of ships, planes, rockets, and more.
Think Claude Code and Codex, but built for hardware engineering. Cosmon's Nexus Agents are already being used by 3,000+ users and production teams at companies including Tesla, BMW, Meta, and Amazon.
The company has raised $32M from investors and operators including Eric Schmidt, early backers of Anthropic and OpenAI, SV Angels, SPC, and Bison. The team brings together alumni from Google Brain, Airbnb, Stanford, and CMU, with research published in Nature, NeurIPS, and ICLR.
Cosmon is looking for a Senior/Staff Security Engineer to help build the security foundations for the next generation of AI agents.
You'll work at the intersection of developer experience, enterprise desktop security, and agentic security, helping ensure that AI agents can operate effectively in enterprise environments without compromising security.
This is a highly hands-on role for an engineer who enjoys solving difficult security problems, moving quickly, and having significant ownership in an early-stage environment.
Design and implement security systems for AI agents operating across enterprise environments
Own and improve enterprise desktop security for agentic workflows
Identify and mitigate security risks associated with AI agents, developer tooling, and desktop environments
Build security controls and infrastructure that enable developers and enterprise customers to safely use AI agents
Partner closely with engineering and product teams to incorporate security throughout the development lifecycle
Develop tooling and experiences that make secure development easier for engineers
Investigate emerging threats and vulnerabilities across AI agent systems and enterprise environments
Help establish security architecture, policies, and best practices as the company scales
Participate in on-call rotations and respond to security issues when they arise
Operate with significant autonomy and ownership across ambiguous, high-impact security problems
Senior or Staff-level software/security engineering experience
Strong background in security engineering, application security, endpoint/desktop security, or a related discipline
Experience building and shipping production software
Strong programming skills in TypeScript and/or Python
Experience with cloud infrastructure, ideally GCP, although cloud provider experience is not required to be specific to GCP
Experience securing developer environments, enterprise desktops, endpoints, or agentic systems
Strong understanding of security architecture, threat modeling, authentication/authorization, and common security vulnerabilities
Ability to work across infrastructure, application, and product layers
Comfortable operating in a highly ambiguous, fast-moving startup environment
Strong communication skills and the ability to work closely with engineers, product teams, and customers
Cosmon is an early-stage company moving quickly. This role is best suited for someone who enjoys high ownership, hard technical problems, and a demanding environment.
You should be comfortable with:
Working 5 days per week in our San Francisco office
Hard deadlines and rapidly changing priorities
Taking ownership of problems without waiting for perfect requirements
Working through high-pressure situations and shipping when the stakes are high
Build AI that builds the physical world. You'll work on technology designed to help engineers build ships, planes, rockets, and other complex physical systems.
Work with serious customers. Tesla, BMW, Meta, Amazon, and thousands of other users are already using Cosmon's technology in production workflows.
Join a technically exceptional team. The team includes alumni of Google Brain, Airbnb, Stanford, and CMU, with research published in Nature, NeurIPS, and ICLR.
Build from the ground up. You'll have meaningful ownership over security architecture and infrastructure as Cosmon scales its AI agent platform.
Backed by experienced investors. Cosmon has raised $32M from investors and operators including Eric Schmidt and early backers of Anthropic and OpenAI.
Cosmon builds AI-powered tools for Computer-Aided Engineering (CAE) and advanced engineering. Its platform uses AI algorithms combined with engineering knowledge to speed up product development and optimize designs. It helps engineers run complex simulations and analyses with less need for specialized expertise and fewer heavy computational resources. The product automates and simplifies CAE workflows, making advanced simulations more accessible to a wider range of engineers in industries like automotive and aerospace. This sets Cosmon apart through leadership from founder Kamal Aggarwal, who has deep experience in CAE and multiphysics from roles at Ansys and CD-adapco/Siemens, and by focusing on applying AI directly to engineering workflows rather than relying on heavy, specialized tooling. The company's goal is to shorten design cycles, boost design quality, and expand who can perform advanced engineering analyses, driving faster innovation.
Explore more opportunities at Cosmon