Klaviyo jobs

Klaviyo seeks a Software Engineer II for the Environments team to build infrastructure and tooling for safe, production-like ephemeral environments used by engineers across the organization. The role involves developing systems for environment provisioning, data seeding, multi-service orchestration, and exploring AI-powered tooling for setup acceleration. Responsibilities include reducing verification bottlenecks, enabling self-service onboarding, and maintaining platform health. The position is based in Boston, MA and requires hands-on development with guidance from senior engineers.

Senior Software Engineer in Platform Engineering at Klaviyo focused on building core platform services and developer experience tools to help product teams move faster. Requires 5+ years with distributed systems, Python, Go, Kubernetes, Terraform, and cloud-native expertise. Full-time on-site in Boston, MA.

Klaviyo seeks a Senior Full Stack Engineer for their Customer Agent team to build an AI-native conversational platform. The role involves designing and scaling systems across the stack including intelligent workflows, conversational experiences, tool integrations, and multi-channel customer engagement. Requires 7+ years of software engineering experience with strong full-stack capabilities. Role is Boston-based; remote status unclear from description.

Klaviyo is seeking a Principal Engineer, Security to own infrastructure security architecture including IAM, secrets management, network defenses, and compliance controls. The role is hands-on with no direct reports, requires 10+ years in infrastructure or platform security, and involves designing security frameworks, owning vulnerability management, and leading threat modeling. Position is on-site in Boston, MA; compensation not specified.

Senior Software Engineer role on Klaviyo's Composer team, focused on building AI-powered conversational marketing platform and agentic orchestration systems. Requires 7+ years of full-stack experience, expertise in LLMs and agentic workflows, and technical leadership. Boston, MA office-based position.

Principal Engineer, Data Infrastructure at Klaviyo (Boston, MA) designing and operating the company's data platform (streaming, batch compute, storage, governance) processing billions of events daily. Requires 10+ years with distributed data systems (Kafka, Flink, Spark, Airflow, Snowflake, BigQuery, lakehouse patterns) and multi-tenant reliability expertise. Role is IC with mentorship responsibilities; compensation not specified. This is a senior/principal-level data infrastructure position, not remote.

Software Engineer II - Growth role at Klaviyo focused on product expansion and customer onboarding. The role involves implementing UX improvements, designing A/B tests, and collaborating across teams to optimize the early customer experience on their marketing automation platform. Based in Boston, MA with hybrid working model.

Senior Software Engineer role on Klaviyo's Infrastructure Security team, responsible for designing and operating cloud-native security services using Python, Go, AWS, Kubernetes, and Terraform. Requires 6+ years of distributed systems experience and hands-on cloud infrastructure expertise. Based onsite in Boston, MA.