Senior Data Platform Engineer II

Jellyvision is redefining how organizations experience benefits by bringing everything together in one modern, intelligent home. As a Senior Data Platform Engineer, you will work on a small, high-ownership data team to build and operate data pipelines, design data schemas, and mentor other engineers.

Responsibilities:

• Design and build pipelines that move data across systems - supporting data lake ingestion, compliance workloads, and cross-domain data flows
• Own pipeline operations end to end: monitoring, incident resolution, data quality, and documentation that lets any team member respond independently
• Identify technical debt and reliability risks and raise them with clear context and proposed next steps
• Design and maintain schemas across relational, warehouse, and lakehouse layers, working with application engineers and product to get data models right
• Build out the platform’s service layer, infrastructure-as-code, and data quality frameworks - this role spans design and implementation
• Keep platform documentation at a level where any team member can understand what exists, how it works, and where the risks are
• Over time, contribute to the analytics engineering layer, including modeling practices and semantic layer development
• Contribute to evaluations of the current platform against emerging architectures and tooling, helping produce trade-off analyses and recommendations
• Bring what you see day to day in the systems you operate into the team’s improvement roadmap and technical direction
• Track and report on platform health metrics: pipeline uptime, failure rates, data freshness, and cost trends
• Mentor peers and junior engineers through code review, pairing, and technical guidance
• Help uphold engineering standards and collaborate cross-functionally with application engineering, product, and analytics as a reliable technical partner
• Share knowledge through documentation and technical discussions

Requirements:

• 7–9+ years of data engineering or data platform experience with hands-on ownership of production systems
• Experience building and operating a data lakehouse, data lake, or modern warehouse architecture (Snowflake, Databricks, or comparable)
• Deep fluency with Apache Airflow or comparable orchestration: DAG design, task dependencies, sensors, and production operations
• Solid understanding of open table formats (Iceberg, Delta, Hudi) and columnar storage (Parquet, Avro, ORC), including how format choices affect query performance, storage efficiency, and schema evolution
• Strong Python: production-grade code, testing, packaging, and debugging
• Advanced SQL: complex transformations, performance tuning, and debugging against a cloud warehouse
• Hands-on relational schema design, ideally in a multi-tenant SaaS context
• Terraform or comparable IaC for managing cloud data resources; CI/CD for pipeline or infrastructure deployment
• Familiarity with AWS data infrastructure: S3, IAM, and relevant managed services
• Experience using AI-assisted development tools (Claude Code, Cursor, Copilot, or similar) to accelerate engineering workflows
• Demonstrated ownership of systems you've inherited and systems you've built from scratch - you can assess an unfamiliar codebase and improve it, and you're just as effective designing something new
• Clear written communication: you can describe a system's state, a problem, or a recommendation in plain language
• Experience mentoring other engineers through code review, pairing, or technical guidance
• Production experience with Apache Spark or comparable distributed processing frameworks
• Snowflake administration: roles, resource monitors, clustering, and cost controls
• Experience with dbt or comparable transformation frameworks: building models, understanding grain and dependencies, writing tests
• Experience with managed ELT tools (Fivetran, Stitch, or similar) including evaluating and retiring them
• Experience in a regulated industry (healthcare, insurance, financial services, etc.) with familiarity around compliance-driven data requirements
• SaaS platform experience, particularly with multi-tenant data architectures
• Familiarity with stream processing technologies (Kafka, Kinesis, Flink)
• Experience with data cataloging or lineage tools (Monte Carlo, DataHub, Atlan, or similar)
• Data governance experience: access control frameworks, data quality monitoring, lifecycle management
• Experience evaluating or migrating between data platform technologies
• Experience standing up a data platform from scratch, including making early architectural and design decisions that shaped how the system evolved