Senior Threat Detection and Response Engineer

Who we are At CarGurus (NASDAQ: CARG), our mission is to give people the power to reach their destination. We started as a small team of developers determined to bring trust and transparency to car shopping. Since then, our history of innovation and go-to-market acceleration has driven industry-leading growth. In fact, we’re the largest and fastest-growing automotive marketplace, and we’ve been profitable for over 15 years. What we do The market is evolving, and we are too, moving the entire automotive journey online and guiding our customers through every step. That includes everything from the sale of an old car to the financing, purchase, and delivery of a new one. Today, tens of millions of consumers visit CarGurus.com each month, and ~30,000 dealerships use our products. But they're not the only ones who love CarGurus—our employees do, too. We have a people-first culture that fosters kindness, collaboration, and innovation, and empowers our Gurus with tools to fuel their career growth. Disrupting a trillion-dollar industry requires fresh and diverse perspectives. Come join us for the ride! Role overview CarGurus is looking for a Senior Security Engineer to add to our growing Threat Detection and Response (TDR) Team. This is a hands-on technical role that will build our first line of defense against cybersecurity threats in a complex and evolving landscape. You will be responsible for our detection and response lifecycle, identifying and preventing threats from impacting our employees, customers and other stakeholders. As a Senior Security Engineer, you will have the opportunity to apply your experience to provide technical leadership to the team, build a platform to identify and stop threats, work with data to solve complex security challenges, and ultimately defend CarGurus against critical threats. What you'll do Build a platform to detect threats to the company using an engineering-first approach that prioritizes reliability, maintainability and scalability Leverage AI and automation to streamline detection and response operations in a safe and reliable manner Onboard, normalize and optimize security logging data to support detection engineering, applied ML models, and efficient querying during incidents. Apply an engineering mindset to develop high-fidelity, rule-based and ML-driven detections as code, utilizing automated testing and CI/CD pipelines for deployment. Own the end-to-end response to alerts, threats, and security incidents, including participating in on-call rotations Proactively monitor the threat landscape to identify and track emerging threats, ensuring that appropriate detective and preventative controls are deployed Partner with development teams to design controls for a cloud first infrastructure (AWS, Kubernetes, etc) What you'll bring 5+ years of experience in software, security, and/or data engineering Strong desire to apply the latest technology including AI and ML to defend against threats Experience with data pipelines and data engineering, especially centralized logging, SIEM tools, and data lakes Desire to measure the success of your work with quantitative tools like Precision and Recall Proficiency in at least one programming language like Python, Go or similar Proven experience with cloud infrastructure and technologies like AWS, Kubernetes, containers, IaC, etc Proven experience with good engineering practices like git/GitHub and CI/CD automations Familiarity with tactics, techniques, and procedures used by threat actors Experience detecting and responding to cybersecurity incidents Strong passion for continuous learning, especially relating to cybersecurity and technology Team player with strong oral and written communication skills Effective ability to make decisions independently and provide clear technical guidance to others The displayed range represents the expected annual base salary / On-Target Earnings (OTE) for this position. On-Target Earnings (OTE) is ... (truncated, view full listing at source)