Senior Software Engineer, Full Stack

Reposted Yesterday
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Everett, WA, USA
In-Office
241K-255K Annually
Senior level
Energy
The Role
The Senior Software Engineer will design and develop full-stack applications, ensuring system performance and reliability while collaborating cross-functionally. Responsibilities include managing APIs, workflows, and database schemas, and participating in product management and user experience design.
Summary Generated by Built In

About Helion

We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths – values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.

What you will be doing

You will design, develop, and operate secure, reliable, scalable, and delightfully usable full-stack applications to optimize processes between mechanical and electrical engineering, supply chain, inventory, manufacturing, and finance, integrating with our internal data platform and external systems. This is a high-impact, high-visibility role: together with a cross-functional team owning business critical applications, you will multiply the impact of many other teams across the company. 

You will:

  • Design and develop frontends, APIs, workflows, database schemas, and caching layers

  • Be a part-time product manager and UX designer. You need to understand how people and processes interact with the software you build

  • Monitor and continuously improve the performance and reliability of our systems, using best-in-class observability tools

  • Collaborate with other software engineers, data analysts and scientists, other engineering disciplines, non-engineers, leadership, and vendors to understand feature and data requirements and deliver solutions

  • Stay current with emerging 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 issues from stalling 24/7 production schedules

Required Skills:

  • Bachelor’s degree in computer science or a related field

  • 8+ years of software engineering experience building full-stack applications

  • Hands-on experience with modern web stacks (e.g., React, Next.js)

  • Expertise in HTML, CSS, TypeScript and a backend language like Go or Python

  • 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)

  • Familiar with UX design tools like Figma

#LI-Onsite #LI-KL1

Benefits

Our total compensation package includes benefits, including but not limited to:

• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend

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.

Skills Required

  • Bachelor's degree in computer science or related field
  • 8+ years of software engineering experience
  • Hands-on experience with modern web stacks
  • Expertise in HTML, CSS, TypeScript and backend languages like Go or Python
  • Cloud-native experience in Azure, AWS, or Google Cloud
  • Familiar with DevOps best practices
  • Familiar with UX design tools like Figma

Helion Energy Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Helion Energy and has not been reviewed or approved by Helion Energy.

  • Fair & Transparent Compensation Compensation is considered competitive for many roles, with employer materials emphasizing competitively benchmarked pay. Total rewards commonly include salary plus equity and benefits that align with market expectations.
  • Healthcare Strength Health coverage includes medical, dental, and vision with options for fully employer‑paid premiums, HSA support, and core protections like life and disability. This breadth signals robust medical benefits for a growth‑stage company.
  • Equity Value & Accessibility Equity is broadly offered through stock options for all employees, positioning ownership as a meaningful part of total rewards. Employer communications consistently highlight equity participation as a differentiator.

Helion Energy Insights

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The Company
Everett, WA
100 Employees
Year Founded: 2013

What We Do

Helion is a fusion power company based in Everett, WA, with the mission to enable a future with unlimited clean energy. Our vision is a world with clean, reliable, and affordable electricity for everyone. Currently, we are scaling up our latest fusion prototype to make our vision a reality. We’re hiring brilliant scientists, engineers, and builders passionate about developing world-changing technologies. If that sounds like you, check out our open positions.

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