PIPELINE - L5 Principal Software Engineer

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PIPELINE - L5 Principal Software Engineer in USA

Klaviyo
Full time
Email

USA
10/07/2026
Report

Boston, MA

Responsibilities

Design and implement data platform capabilities for event ingestion and CDC, stream processing, batch orchestration, lakehouse and warehouse patterns, catalog and lineage, governance, access, and compliance.
Define and uphold data freshness, availability, and correctness SLOs and lead readiness reviews, incident response, and post-incident learning.
Author ADRs and RFCs, establish data contracts and schema governance, and standardize connectors and templates for data producers and consumers.
Profile, tune, and right-size systems for performance and cost while partnering with FinOps on unit-economics guardrails.
Partner with product, analytics, and ML teams to expose useful data abstractions and accelerate customer value.
Write and review high-quality code and mentor Staff and Senior engineers through design documents, pairing, and enablement rather than line management.
Apply AI and automation to data workflows including pipeline authoring and testing, catalog and search, documentation, and data-quality operations.

Requirements

10+ years of experience building and operating distributed data systems with multi-tenant reliability.
Expertise in data ingestion and CDC, stream processing, batch orchestration, lakehouse patterns, catalog and lineage, governance, access controls, and SLO-driven operations.
Experience with technologies such as Kafka, Pub/Sub, Flink, Spark, Beam, Airflow, Dagster, Iceberg, Delta, Hudi, Snowflake, BigQuery, and object storage.
Experience applying ML or generative AI to data platforms, including semantic catalog search, automated documentation, data-quality anomaly detection, and SQL or pipeline generation with privacy controls and human review.
Ability to establish data contracts, connectors, and reusable templates and to influence and mentor engineers across teams.
Preferred experience with regional isolation and replication, privacy-by-design, and data governance in regulated contexts.
Preferred experience adopting standardized ingestion, processing, and storage paths, achieving strong freshness SLOs, reducing cost per terabyte, and using AI-augmented data operations.

Benefits

Base compensation is listed separately in the posting, with potential annual cash bonus, equity, sign-on payments, and health, welfare, and wellbeing benefits based on eligibility.
The role may require up to 10% travel for onboarding, client or partner work, team meetings, and industry events, coordinated in advance.
Klaviyo provides workplace accommodations as needed.

Salary: $244k - $366k/yr

Klaviyo

Klaviyo (NYSE: KVYO) is the autonomous B2C CRM. Powered by its built-in data platform and AI, Klaviyo combines marketing automation, analytics, and customer service into one unified solution, making it easy for businesses to know their customers and grow faster. Klaviyo (CLAY-vee-oh) helps over 1...

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