Top Engineering Jobs in Boston, MA

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 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).

As a Senior Software Engineer in Developer Infrastructure, you will manage dependency optimization, platform upgrades, enhance developer productivity, and ensure operational excellence while collaborating cross-functionally.

As the Senior Engineering Manager for Orchestrate at Klaviyo, you will lead teams focusing on customer communication orchestration across channels, shaping systems for scalability, delivery, and customer experience, while partnering with cross-functional teams and developing leadership within engineering.

As a Senior Software Engineer at Klaviyo, you will design and scale AI backend systems, collaborate with ML engineers, and optimize customer experience through innovative technology.

As a Senior Software Engineer, you will lead user-experience improvements, drive A/B testing, mentor team members, and develop scalable solutions to enhance customer onboarding and success.