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About Flexport: At Flexport, we believe global trade can move the human race forward. That's why it's our mission to make global commerce so easy there will be more of it. We're shaping the future of a $10T industry with solutions powered by innovative technology and exceptional people. Today, companies of all sizes—from emerging brands to Fortune 500s—use Flexport technology to move more than $19B of merchandise across 112 countries a year. The recent global supply chain crisis has put Flexport center stage as we continue to play a pivotal role in how goods move around the world. We are proud to have the support of the best investors in the game who believe in our mission, solutions and people. Ready to tackle global challenges that impact business, society, and the environment? Come join us. What you'll do There is no MSSP and no tier-1 queue here. Detection & Response engineers own their detections end to end: you write them, you tune them, and your team is paged when they fire. The security team is spread across the globe with a follow-the-sun pager rotation so nobody is paged at 3am local. The adversaries are real. The business is growing fast and the threat surface is growing with it. Defining the necessary telemetry is part of the job. Detection engineering Build and tune detections across endpoint, identity, SaaS, and cloud, treating them as software: version-controlled, peer-reviewed, and shipped through the same CI/CD practices the rest of engineering uses.Track detection quality as measured quantities: coverage against MITRE ATT&CK, precision, time-to-detect. We don't build-and-forget here.Response & automation Own incident response: triage, contain, remediate, and write the retrospective that turns the incident into a systemic fix.Build automation that removes toil from investigations, and partner closely with the US-based team so context carries across time zones instead of getting lost at handoff.Telemetry & partnership Define telemetry requirements for new systems before they ship, working with infrastructure and product teams to close visibility gaps rather than discovering them during an incident.Threat hunt proactively across the estate, converting hypotheses into either new detections or documented coverage.You Should Have Typically 5–8 years of experience in detection engineering, incident response, or threat hunting, with real hands-on time writing and tuning detections. We care more about what you've built than the exact number.Proficiency in at least one programming language (Python, Go, or similar) and comfort writing production-grade detection and automation code.Experience with a modern SIEM or detection pipeline (Panther, Elastic, Splunk, or similar). What matters is that you've shipped and tuned detection logic in production.Practical incident response experience: you've led or played a major role in triaging and closing out real security incidents.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, rather than retrofitting logging after an incident.A track record of critically evaluating and verifying AI-assisted work - testing, source-checking, validation - rather than trusting agent output by default. If you haven't already spotted the em dashes in this job description and already thought about where the hiring manager (hi!) has put hands on keyboard and compared that to where they let the LLM watermarks through, you might not be the right person for the job.Familiarity with cloud-native and Kubernetes telemetry.Experience with fraud or financial-crime detection patterns.How we work We're in the San Francisco office regularly to work through incidents and detection design in person.We stay closely aligned with teammates on other continents via Slack, video, and async docs.We have the latest hardware and software, including frontier AI models on day one.We're agile, but not dogmatic. Teams decide how they work best.Why this role is special You own your detections end to end, no MSSP, no tier-1 queue, no handing your work to someone else to triage.The consequences here are physical, not abstract: a containment decision can stop a customs filing or freight actually moving, which makes the stakes concrete in a way a SaaS control plane rarely is.You'll inherit a real, established estate with legacy telemetry gaps to close, genuinely underexplored surface area, not a well-mined problem.Where you'll work This role is based in San Francisco, and we have a strong preference for candidates who are there or willing to relocate — we're deliberately building this team in one place. Relocation support is available for the right candidate. Investing your time with Flexport means having immediate impact, all over the world. You're empowered to do what's best for everyone and trusted to make the right decisions when and where you need them. Join our collective of entrepreneurs and improve the world's experience in global trade. #LI-Onsite The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations. Our salary ranges are determined by role, level, and location. Within the range displayed, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education and / or training. Base salary is just one part of our total rewards package at Flexport, which also includes bonus, equity, and comprehensive benefit offerings such as medical, dental, and flexible time off. California Pay Range $138,196—$252,000 USD Washington Pay Range $183,272—$229,091 USD Colorado Pay Range $138,196—$172,746 USD New York City Pay Range $183,272—$229,091 USD Illinois Pay Range $138,196—$172,746 USD Commitment to Equal Opportunity At Flexport, our ability to fulfill our mission of making global commerce easy and accessible relies on having a diverse, dedicated and engaged workforce. All qualified applicants will receive consideration for employment regardless of race, color, religion, sex, national origin, age, physical and mental disability, health status, marital and family status, sexual orientation, gender identity and expression, military and veteran status, and any other characteristic protected by applicable law. Global Data Privacy Notice for Job Candidates and Applicants Depending on your location, the General Data Protection Regulation (GDPR) and California Consumer Privacy Act (CCPA) may regulate the way we manage the data of job applicants. By submitting your application, you are agreeing to our use and processing of your data as required. Please see our Privacy Notice available at www.flexport.com/privacy for additional information.