Senior Security Engineer, Detection & Response

Job Overview

We are looking for a Senior Security Engineer to join our Detection & Response team at Flexport. As a Senior Security Engineer, you will own detections end-to-end, from writing and tuning them to handling incidents and implementing automation.

Responsibilities

Detection Engineering

• Build and tune detections across endpoint, identity, SaaS, and cloud, using version control, peer review, and CI/CD practices.
• Track detection quality metrics such as coverage against MITRE ATT&CK, precision, and time-to-detect.

Response & Automation

• Own incident response processes, including triage, containment, remediation, and writing retrospectives.
• Develop automation to streamline investigations and collaborate with the US-based team.

Telemetry & Partnership

• Define telemetry requirements for new systems, working with infrastructure and product teams.
• Proactively threat hunt across the estate, converting hypotheses into new detections or documented coverage.

Requirements

• Typically 5–8 years of experience in detection engineering, incident response, or threat hunting.
• Proficiency in at least one programming language (Python, Go, or similar).
• Experience with a modern SIEM or detection pipeline (Panther, Elastic, Splunk, or similar).
• Practical incident response experience.

Nice to Have

• Experience treating detections as code with CI/CD, peer review, and staged rollout.
• Experience defining telemetry contracts for systems before they ship.
• Familiarity with cloud-native and Kubernetes telemetry.
• Experience with fraud or financial-crime detection patterns.

How We Work

• Regular work in the San Francisco office.
• Collaboration with global teammates via Slack, video, and async docs.
• Access to the latest hardware and software.

Why This Role Is Special

• End-to-end ownership of detections.
• Concrete consequences of your work impacting global trade.
• Opportunity to work on an established estate with legacy telemetry gaps.

Location

This role is based in San Francisco, with a strong preference for candidates willing to relocate.

Salary Range

The US base salary range for this position is $183,272-$229,091 USD.