Security Engineer

Lambda

Security Engineer responsible for securing Lambda's AI cloud infrastructure. Building detections, responding to incidents, and collaborating with multiple teams on security improvements.

Posted 6/15/2026full-timeSan Francisco • California • 🇺🇸 United StatesMid-LevelSenior💰 $266,000 - $395,000 per yearWebsite

Tech Stack

Tools & technologies

CloudGoLinuxPython

About the role

Key responsibilities & impact

Build and Tune Detections: Develop and refine detection content across our SIEM and EDR to catch threats targeting customer data, model weights, and infrastructure.
Respond to Incidents: Participate in on-call, lead investigations end-to-end, and turn each incident into automation, playbooks, or controls that prevent the next one.
Harden Systems Directly: Remediate vulnerabilities and security findings in production, partnering with engineering teams when fixes cross team boundaries.
Review Architectures and Code: Provide actionable security feedback on high-level designs and individual changes, and turn recurring review patterns into reusable standards.
Build Security Tooling: Ship Python or Go services that automate evidence collection, vulnerability triage, and other toil, using Lambda's hosted LLMs where they meaningfully accelerate the work.
Partner Across Engineering: Work with Product Engineering, Data Center Operations and Engineering, IT, and Legal to land security improvements at the moments they're cheapest to adopt.
Balance Strategic and Tactical: Recognize when to invest in a long-term fix versus when "good enough" is exactly that, and bias toward measurable forward progress.

Requirements

What you’ll need

5+ years of demonstrated security engineering experience, either directly as a security engineer or as an engineer driving security outcomes.
A track record of working across security domains; for example, shipping detection work in one role and architecture, platform, or vulnerability management work in another.
Thrives in high-speed, high-ambiguity startup environments where priorities shift regularly and structure must be built while executing.
Strong hands-on Linux experience that showcases your ability to protect both our applications and the cloud we build underneath them.
Comfortable solving problems in Python, Go, or a similar language, with the discipline to ship production-grade tooling rather than only one-off scripts.
Excellent collaboration with technical teams both with and without authority (we're all on the same team!).

Benefits

Comp & perks

Health, dental, and vision coverage for you and your dependents
Wellness and commuter stipends for select roles
401k Plan with 2% company match (USA employees)
Flexible paid time off plan that we all actually use

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

security engineeringPythonGoLinuxvulnerability managementdetection content developmentincident responseautomationcloud securityproduction-grade tooling

Soft Skills

collaborationproblem-solvingadaptabilitystrategic thinkingtactical executionleadershipcommunicationteamworkinitiativecreativity