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Helion Energy Logo

Senior Software Engineer, Data Platform

Helion Energy

$171,000 - $212,000
Dec 4, 2025
Everett, WA, US
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Helion is looking to build the world's first fusion power plant and needs to design, develop, and operate a secure, scalable, reliable, and efficient platform to facilitate the flow of data between internal and external systems supporting various business functions.

Requirements

  • 8+ years of software and/or data engineering experience building and operating large-scale, distributed data systems
  • Hands-on experience with modern data storage and processing technologies (e.g., Kafka, Postgres, blob storage, Flink, dbt, Iceberg)
  • Expertise in Python and SQL; experience with other languages like Java, Scala, or Go
  • Cloud-native experience in Azure, AWS, and/or Google Cloud, using container orchestration technologies like Docker, Kubernetes, and infrastructure-as-code tools like Terraform
  • Familiar with DevOps best practices, using version control (Git), CI/CD (e.g., Buildkite, GitHub Actions), and monitoring and alerting (e.g., Prometheus, Grafana, Datadog)
  • Experience with AI/ML, including LLMs and MCP servers

Responsibilities

  • Design and develop large-scale, batch and real-time data pipelines, ELT processes, data warehouses, and data lakes, both on prem and in the cloud
  • Scale our data platform to support operational growth from millions of parts per year to millions per day
  • Monitor and continuously improve the performance and reliability of data connections and their impact on up-and-downstream systems, using best-in-class observability tools
  • Ensure data quality and governance by managing metadata like schemas, lineage, and access control
  • Collaborate with other software engineers, data analysts and scientists, other engineering disciplines, non-engineers, leadership, and vendors to understand data requirements and deliver solutions
  • Stay current with emerging data technologies while recommending battle-tested right-fit solutions that align with strategic goals
  • Participate in on-call rotations to maintain our SLA with the rest of the company, and prevent data issues from stalling 24/7 production schedules

Other

  • Bachelor’s degree in computer science or a related field
  • report directly to our VP of Engineering at our Everett, WA office.
  • collaborate with other software engineers, data analysts and scientists, other engineering disciplines, non-engineers, leadership, and vendors to understand data requirements and deliver solutions
  • Participate in on-call rotations to maintain our SLA with the rest of the company, and prevent data issues from stalling 24/7 production schedules
  • Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.