Security Engineer at Mixpanel · LumiJobs

Responsibilities

Mixpanel's Information Security & Risk Management (ISRM) team is hiring a Security Engineer to run the day-to-day work of our security operations: vulnerability management, detection and monitoring, and incident response. You'll work closely with engineering teams to find and close real risk, tune our detections so every alert is worth investigating, and use AI to make triage and investigation faster. This is a hands-on role for an engineer early to mid-way in their career, with a defined path to Senior Security Engineer.
Vulnerability management: Triage findings from vulnerability scanners, penetration tests, bug bounty reports, and dependency tooling. Validate exploitability and impact in our environment, and assign severity accordingly.
Remediation with engineering: Work with engineering teams to agree on fixes and timelines, track each vulnerability through to closure within SLA, and escalate items at risk of missing it.
Detection and monitoring: Build, tune, and maintain detections in our SIEM across cloud, identity, endpoint, and application logs, and cut false positives so on-call time goes to real threats.
AI-assisted security operations: Use AI tools (e.g. Claude Code) to speed up alert triage, enrich investigations, write and test detection logic, and automate repetitive SecOps work.
Incident response: Investigate and respond to security incidents from first alert through containment, eradication, and recovery, and write clear post-incident reviews with follow-up actions.
Coverage and runbooks: Identify gaps in log sources and detection coverage, onboard new sources, and keep runbooks current so the team responds consistently.
On-call: Take part in the security on-call rotation.
We're Looking For Someone With
3-5 years of experience in security engineering, security operations, detection and response, or a related role
Hands-on vulnerability management experience, including triaging and validating scanner and pentest findings and working with engineers to remediate them
Experience working in a SIEM (e.g. Splunk, Google SecOps/Chronicle, Panther, Elastic), including writing queries and building or tuning detections

Security Engineer

Responsibilities

Qualification

Required

Preferred

Benefits

Company

Mixpanel

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