Klaviyo
Principal Software Engineer
$244K–$366K
Boston, MA +1 · Principal · Full-time · Posted Oct 7, 2026
- Location
- Boston, MA
Boston, Massachusetts, United States - Experience
- 10+ years building and operating distributed data systems.
About the job
Own the technical direction and delivery of Klaviyo’s data platform, building scalable, reliable, cost-efficient systems for human and AI-agent data use.
What you'll do
- Design and implement data platform capabilities across ingestion, processing, orchestration, storage, cataloging, governance, and access.
- Set and uphold data freshness, availability, and correctness SLOs; lead readiness reviews, incident response, and post-incident learning.
- Establish data contracts, connectors, and templates; tune systems for performance and cost, and use AI to improve data workflows.
What they ask for
- 10+ years building and operating distributed data systems with multi-tenant reliability.
- Expertise in data ingestion/CDC, stream processing, batch orchestration, lakehouse patterns, catalog/lineage, governance, and access controls.
- Experience applying ML/GenAI to data platforms with human-in-the-loop review and privacy controls.
- Ability to influence across teams and enable others through design docs, pairing, and standardized platform capabilities.
Nice to have
- Regional isolation/replication strategies, privacy-by-design, or data governance in regulated contexts.
- Experience establishing adopted standard ingestion, processing, and storage paths and schema governance.
Pay
$244,000 — $366,000 USD base salary
Tools
Kafka/PubSub, Flink/Spark/Beam, Airflow/Dagster, Iceberg/Delta/Hudi, Snowflake/BigQuery
AI focus
Apply ML/GenAI to data platforms, including semantic catalog search, auto-documentation, data-quality anomaly detection, and SQL/pipeline generation, with human review and privacy controls; use AI to streamline data workflows.
Model-written summary · the original posting is authoritative