Lead Security Engineer

Angellist

San Francisco, CASeniorEngineeringPosted 1h ago

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Full description

About AngelList

Private markets are the new public markets. The most important companies of this era are private, and almost no one can own them. What's missing is the financial system public markets spent a century building: exchanges, custodians, brokers, and ways for ordinary people to buy in. Private markets, now $28T, never had the equivalent. AngelList is building it.

The last decade of structural innovation in venture happened here: syndicates, SPVs at scale, Rolling Funds, scout programs. Today we have $200B+ in assets and 30,000+ startups funded on our platform. The rest of private markets is next. Funds is the software and services behind private funds, Nova is the banking network, Meridian is the wealth platform for accredited investors, and USVC is the brand behind a registered fund that lets anyone invest in venture.

Working here means an unusual amount of agency on a problem that matters. Titles are closer to suggestions, and there are about 200 of us building what private markets never had. Come build it with us.

About the role:

The strongest security programs are built by designing systems where the secure path is the easiest path. We're hiring someone to build those systems.

You'll be a hands-on engineer who designs and builds the systems that make security a property of our infrastructure: a unified identity and access layer, cloud security, automated provisioning and revocation, and the guardrails that let teams ship fast. You will work directly with Infrastructure, Engineering, IT, and Product to roll them out.

We want someone who sees AI as a way to change how security engineering operates. Instead of triaging alerts faster, this person will work toward systems that understand context, make decisions, and remediate autonomously. You’ll report to the Head of Security, on a small team with a large scope.

✦ Editor’s analysis Extracted from the posting text on October 06, 2026 · analysis, not source data

Lead Security Engineer at AngelList designing and building systems that make security a property of infrastructure, including unified identity and access, cloud security, and automated provisioning. Hands-on role on a small team with large scope reporting to Head of Security, aiming to use AI for autonomous context-aware remediation instead of faster alert triage.

Must-have skills

unified identity and access layer design
cloud security systems engineering
automated provisioning and revocation
security guardrails enabling fast shipping
infrastructure security as code/systems

Nice-to-have

AI-driven autonomous security remediation
systems that understand context and make decisions

Scope & seniority

Lead IC on a small team with large scope, reporting to Head of Security

✓ Green flags

Small team with large scope and unusual agency at ~200-person company
Building proactive autonomous systems rather than alert triage
Platform scale noted: $200B+ assets and 30,000+ startups funded

⚠ Worth knowing

Very brief posting with no stated requirements, tech stack, experience level, or compensation

Everything above is pulled from the employer’s own posting — nothing made up. Salaries appear only when the employer lists them directly.

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