Klaviyo

Senior Security Engineer on Klaviyo’s Detection & Response team, building detections, security automation, and tooling while leading threat investigations and incident response. The role combines hands-on security engineering, threat hunting, digital forensics, and AI-enabled operations at enterprise scale.

Senior Security Engineer on Klaviyo’s Detection & Response Team, building detection systems, automating security operations, and leading incident investigations across enterprise, cloud, and product environments. The role combines security engineering, threat hunting, digital forensics, and on-call response at scale.

Senior Security Engineer joining Klaviyo’s Detection & Response team to build detection systems, automate security operations, investigate threats, and respond to incidents at enterprise scale. The role combines software engineering, threat hunting, digital forensics, and security automation across cloud and product environments.

Join Klaviyo’s Developer Infrastructure team to build the foundational systems, dependency tooling, and developer platforms that help engineers ship code efficiently and safely. This senior role offers high-leverage architectural impact across the company’s backend ecosystem, with opportunities to apply AI to developer productivity and platform operations.

Klaviyo is hiring a Senior Security Engineer for its Detection and Response team to build scalable security observability, detection, and incident response systems. The role combines security engineering, data pipelines, automation, threat hunting, and hands-on incident response.

Klaviyo is seeking a Senior Full Stack Engineer to build end-to-end customer personalization and account experiences for ecommerce brands. The role combines hands-on frontend and backend development with technical leadership, mentoring, and ownership of key initiatives.

Senior Machine Learning Engineer building and deploying large-scale ML and generative AI systems that power Klaviyo’s marketing products, customer experiences, and AI agents. This onsite Palo Alto role combines model development, production ownership, experimentation, and technical leadership.

Build and operate cloud-native infrastructure security services that help engineers ship secure software reliably at global scale. This Software Engineer II role combines distributed systems, security, automation, and operational ownership in a hybrid Dublin environment.