Senior Software Engineer in Test (SDET) Seattle, WA

The Nuclear Company is the fastest growing startup in the nuclear and energy space creating a never before seen fleet‑scale approach to building nuclear reactors. Through its design‑once, build‑many approach and coalition building across communities, regulators, and financial stakeholders, The Nuclear Company is committed to delivering safe and reliable electricity at the lowest cost, while catalyzing the nuclear industry toward rapid development in America and globally.

Senior Software Engineer in Test (SDET)

About The Nuclear Company

The Nuclear Company (TNC) is at the forefront of revolutionizing nuclear energy through cutting‑edge technology and innovative digital solutions.We're building Nuclear OS, a comprehensive digital platform that transforms how nuclear facilities are designed, constructed, and operated.

Our technology staff is embedded alongside engineering, procurement, and construction teams, ensuring our software solutions are built from real‑world nuclear deployment experience.

Position Overview

We're seeking a passionate Software Engineer in Test to join our mission‑critical team developing software that ensures the safety, compliance, and efficiency of nuclear operations. This role combines the excitement of cutting‑edge technology with the responsibility of supporting clean energy infrastructure that powers our future.

Key Responsibilities

• Design and implement comprehensive test automation frameworks for Nuclear OS applications
• Develop testing strategies for safety‑critical nuclear software systems
• Create and maintain QA / QC data validation systems, including inspection reports, test results, and compliance documentation
• Build automated testing pipelines that integrate with our continuous deployment processes
• Develop advanced analytics and AI capabilities
• Implement foundational architecture that combines Palantir's powerful data integration and modeling capabilities with quality objectives

Nuclear‑Specific Testing

Advanced Testing & Analytics

Quality Assurance & Compliance

Technical Skills

Nuclear Industry Knowledge (Preferred)

Professional Attributes

What We Offer

Mission‑Driven Impact

Clean Energy Leadership : Contribute to the future of carbon‑free nuclear energy

Estimated Starting Salary Range

$121,000- $143,000 annually less applicable withholdings and deductions, paid on a bi‑weekly basis. The actual salary offered may vary based on relevant factors such as experience, qualifications, tenure, skill set, availability of qualified candidates, geographic location, certifications held, and other criteria deemed pertinent to the particular role.

EEO Statement

The Nuclear Company is an equal opportunity employer committed to fostering an environment of inclusion in the workplace. We provide equal employment opportunities to all qualified applicants and employees without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected characteristic. We prohibit discrimination in all aspects of employment, including hiring, promotion, demotion, transfer, compensation, and termination.

Export Control

Certain positions at The Nuclear Company may involve access to information and technology subject to export controls under U.S. law. Compliance with these export controls may result in The Nuclear Company limiting its consideration of certain applicants.

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