Top Engineering Jobs in Boston, MA

Lead cross-team data platform initiatives focused on the Data Lake. Drive architecture and roadmaps for lakehouse storage, compute, orchestration, modeled data layers, and operational automation. Own large, complex programs end-to-end, make high-judgment architectural decisions, establish standards and paved paths, respond to incidents, and mentor senior engineers while aligning stakeholders across engineering, product, analytics, and AI/ML.

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.

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

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.

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).

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.

Own end-to-end architecture for Klaviyo's partner systems, translating business needs into diagrams, data models, and design docs. Build and ship Apex, LWC, Flow, and complex integrations, maintain reusable assets in GitHub, run architecture and PR reviews, refine backlog with Product Owner, and mentor developers while serving as domain expert for GTM stakeholders.

Own and deliver Salesforce solutions (Apex, LWC, Flow) and integrations across the GTM stack. Build and maintain the partner portal and payments integrations, ensure secure data flows and platform health, triage high-impact issues, apply engineering best practices, use AI tools to accelerate development, and mentor junior developers.

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.