# Senior Security Engineer, Detection & Response

**Company:** [Flexport](https://hotfix.jobs/companies/flexport)
**Location:** San Francisco, CA
**Role:** Security Engineering
**Salary:** $183k – $229k/yr
**Experience:** 5+ years
**Skills:** Python, Go, SIEM, Panther, Elastic, Splunk, CI/CD, Mitre Att&Ck, Kubernetes, Threat Hunting, Incident Response, Cloud Telemetry
**Posted:** 2026-08-27

> Own end-to-end security detection engineering, incident response, automation, and threat hunting across endpoint, identity, SaaS, and cloud environments. The role requires substantial hands-on experience with production detection logic, incident response, programming, and modern SIEM or detection pipelines.

## Job Description

## Responsibilities

### Detection Engineering
- Build and tune detections across endpoint, identity, SaaS, and cloud environments.
- Treat detections as software using version control, peer review, and CI/CD practices.
- Measure detection quality through MITRE ATT&CK coverage, precision, and time-to-detect.

### Response and Automation
- Own incident response, including triage, containment, remediation, and retrospectives.
- Build automation to reduce investigation toil.
- Coordinate with global security teammates to preserve context across time zones.

### Telemetry and Threat Hunting
- Define telemetry requirements for new systems before launch.
- Partner with infrastructure and product teams to close visibility gaps.
- Proactively threat hunt and convert hypotheses into detections or documented coverage.

## Requirements
- Typically 5–8 years of experience in detection engineering, incident response, or threat hunting.
- Hands-on experience writing and tuning detections.
- Proficiency in Python, Go, or a similar programming language.
- Experience writing production-grade detection and automation code.
- Experience with a modern SIEM or detection pipeline such as Panther, Elastic, or Splunk.
- Practical incident response experience, including major involvement in triaging and closing security incidents.

## Nice-to-Haves
- Experience treating detections as code with CI/CD, peer review, and staged rollout.
- Experience defining telemetry contracts before systems ship.
- Experience evaluating and validating AI-assisted work.
- Familiarity with cloud-native and Kubernetes telemetry.
- Experience with fraud or financial-crime detection patterns.

## Compensation
- US base salary: $183,272–$229,091 USD.
- Additional compensation may include bonus, equity, and benefits.

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