PIPELINE - L5 Principal Software EngineerPosted today$202K–$212K

The opportunity

At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements.

What you'll do

  • Design and implement core data platform capabilities (e.g., event: ingestion/CDC, stream processing, batch orchestration, data lake/warehouse patterns, catalog/lineage, governance, access, and compliance).

  • Define and uphold SLOs for data freshness, availability, and correctness;: author/run readiness reviews, incident response, and post‑incident learning for your domain.

  • Author ADRs/RFCs, land data contracts and schema governance, and standardize: connectors and templates that accelerate developer velocity.

  • Profile, tune, and right‑size systems for performance and cost; partner with: FinOps on unit‑economics guardrails.

  • Pair with product teams and analytics/ML to expose the right abstractions and unblock customer value quickly.

  • Contribute high‑quality code and reviews; mentor Staff/ Sr. engineers across: pillars through example and enablement (not line management).

What they're looking for

  • Use AI to streamline data workflows, from authoring and testing pipelines to: catalog/search and DQ, so analysts, ML, and product teams move faster with confidence.
  • Experience: 10+ years building and operating distributed data systems (e.g.,: Kafka/PubSub, Flink/Spark/Beam, Airflow/Dagster, Iceberg/Delta/Hudi; Snowflake/BigQuery; object storage) with multi‑tenant reliability.
  • Technical expertise: Data ingestion/CDC, stream processing, batch orchestration, lakehouse patterns, catalog/lineage, governance, and access controls, measured by freshness, availability, and correctness SLOs.
  • AI tools & automation: You apply ML/GenAI to data platforms - semantic catalog search, auto‑docs, data‑quality anomaly detection, SQL/pipeline generation - with human‑in‑the‑loop review and privacy controls.