Top Tech Jobs & Startup Jobs in Boston, MA

Lead integrated marketing for K:Service by designing and executing cross-channel customer journeys. Collaborate with product, content, creative, analytics, and GTM teams to drive demand, measure campaign performance, optimize messaging, and scale acquisition, retention, and revenue through data-driven experiments and audience segmentation.

Design, build, and operate foundational platform services to improve availability, scalability, latency, and efficiency. Enable product teams via platform primitives (infra, databases, queuing), leverage Python, Go, AWS, Kubernetes, and Terraform, and mentor engineers to deliver resilient, scalable systems and improved developer experience.

Build and scale Klaviyo's AI-native Customer Agent platform across frontend and backend. Design conversational experiences, retrieval and orchestration systems, integrations, observability, and deployment. Drive architecture, mentor engineers, ensure reliability, and ship high-quality, scalable AI-driven customer engagement features.

Lead Klaviyo's infrastructure security architecture and programs: IAM, secrets management, network segmentation, vulnerability management, and security tooling. Build IaC guardrails, define security SLOs and compliance posture, run threat modeling and design reviews, embed controls into CI/CD and observability, and deliver code/automation while mentoring senior engineers. Drive AI-enabled security automation and audit readiness for SOC 2/ISO 27001.

Build and lead development of Klaviyo's conversational AI platform: native chat surface, agent orchestrator, and agentic UI. Design scalable, reliable systems, ship high-quality code, mentor engineers, drive technical decisions, and improve AI-powered customer experiences.

As a Senior Software Engineer, you'll design and build scalable systems for customer data management, ensuring seamless user experiences and mentoring team members.

The Lead People Systems Engineer will design AI-first People workflows, build scalable AI systems, and ensure responsible AI practices in HR operations.

Lead design and delivery of Klaviyo's scalable data platform (streaming, batch, lakehouse, governance). Define SLOs, author ADRs/RFCs, implement ingestion/CDC, processing, storage, catalog/lineage and access controls. Optimize performance/cost, apply ML/GenAI to data workflows, partner with product/analytics, contribute code/reviews, and mentor senior engineers to enable reliable, multi‑tenant data at scale.

Design and implement user-facing product and onboarding improvements, run and analyze A/B tests, collaborate cross-functionally, improve experimentation and development processes, mentor engineers, and define safe, performant AI agent goals. Hybrid role based in Boston (≥3 days/week).

Design and implement automated compliance workflows and continuous control monitoring for SOC 2, ISO 27001/27017, PCI, and SOX ITGCs. Integrate and customize compliance automation platforms, collect scripted evidence, validate controls, partner with engineering and risk teams, and apply AI/automation to scale GRC operations.