
Member of Technical Staff
San Francisco, CA at a glance
- Rent
- #2 of 51$2,680/mo+46% vs US avg
- Weather
- #17 of 51295 mild days0 hot · 0 cold
- Income tax
- #1 of 5113.3% top rateCalifornia
What you need
- Strong TypeScript/Python, clean code, fast shipping
- Cloud infrastructure (GCP/AWS) and containerized environments
- Proven ability to debug and fix critical production issues
- Ownership mindset: fix broken systems, build missing components
- High commitment: 'entire life has to be this company'
What you'll do
- Design and build core platform: agent orchestration, verification pipelines
- Ship production features end-to-end from architecture to deployment
- Work across stack: Temporal, Kubernetes, Nomad, sandboxed execution
- Solve hard distributed systems problems: scheduling, isolation, encryption
- Collaborate with founders and customers to shape product
We're building autonomous AI agents that find and verify real security vulnerabilities the kind that used to require a senior pentester and a week of work. We're a YC W26 company with ~$1M ARR in a few weeks, top-tier investors, and top customers.
We need engineers who are cracked at AI, infrastructure security, and TypeScript. You'll be shipping systems that orchestrate agents across sandboxed environments, process untrusted code at scale, and deliver verified findings that security teams actually trust.
What you'll do:
Design and build the core platform. Agent orchestration, verification pipelines, and the infrastructure that ties it all together. Ship production features end-to-end: you own it from architecture to deployment. Work across our stack: Temporal workflows, Kubernetes, Nomad Clusters, sandboxed execution environments. Solve hard distributed systems problems like scheduling, isolation, fault tolerance, encryption. Collaborate directly with founders and customers to shape what we build next.
What we're looking for:
An overall cracked individual. Strong in TypeScript and/or Python, you write clean code and you ship fast. Comfort with cloud infrastructure (GCP/AWS) and containerized environments. You've debugged something at 2am that wasn't your fault and fixed it anyway. You default to ownership. If something's broken, you fix it. If something's missing, you build it. Your entire life has to be this company.
Nice to have:
Experience with AI/LLM agent systems, tool-use patterns, or multi-step orchestration. Background in security, offensive tooling, or working with untrusted inputs. Familiarity with Temporal, Kubernetes, or sandbox technologies (E2B, gVisor, bubblewrap). You've built something from zero that people actually use.
Interview Process
Step 1: Intro call with a founder (30 minutes) - We'll talk about what you've built, what you care about, and whether this is the kind of problem you’re interested in.
Step 2: Technical challenge (1–2 hours, on your own time) - A real engineering problem, not a LeetCode hazing ritual (unless you want to). We want to see how you think and build.
Step 3: Paid work trial (1 week) — You'll work with us on real tasks. Best way for both sides to know if it's a fit.
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About Parameter (fka Hex Security)
Parameter builds AI agents that run continuous penetration tests against your apps and infrastructure. Instead of a once-a-year penetration test, Hex Security's agents works 24/7 to find and verify critical vulnerabilities so you can prevent them before attackers. Formerly Hex Security
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