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The Nuclear Company

Senior Software Engineer in Test (SDET)

The Nuclear Company, Seattle, Washington, us, 98127

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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) 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.

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.

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

Validate QA records with attributes like date, result (pass/fail), inspector credentials, and linkage to ITAAC requirements

Test software systems that manage nuclear component tracking, system testing, and regulatory compliance

Implement data quality checks and validation routines to catch inconsistencies in critical nuclear data

Ensure software meets stringent nuclear industry standards and regulatory requirements

Develop testing frameworks for root‑cause analysis tools that trace system histories, component manufacturing records, and test procedures

Create performance and load testing suites for mission‑critical nuclear operations software

Build testing infrastructure for AI‑powered compliance and project management tools

Ensure testing processes conform to Nuclear Quality Assurance programs (NQA‑1 standards)

Validate electronic signature systems and traceability workflows

Test regulatory reporting and documentation systems

Strong problem‑solving skills with ability to work in cross‑functional teams

Experience translating business requirements into technical solutions

Ability to work effectively with non‑technical stakeholders

Excellent written and verbal communication skills

Required Qualifications

5+ years of software testing experience, preferably in regulated industries

Strong programming skills in Python, Java, C#, or similar languages

Test automation expertise with frameworks like Selenium, Cypress, TestNG, or Playwright

API testing proficiency using tools like Postman, REST Assured, or similar

Database testing experience with SQL and NoSQL databases

CI/CD pipeline experience with Jenkins, GitLab CI, or Azure DevOps

Understanding of nuclear regulatory requirements and compliance frameworks (preferred)

Experience with personnel qualification tracking and training record systems (preferred)

Knowledge of ITAAC (Inspections, Tests, Analyses, and Acceptance Criteria) processes (preferred)

Familiarity with nuclear quality assurance standards (preferred)

Detail‑oriented mindset with commitment to safety and quality

Analytical problem‑solving skills for complex system testing

Collaborative approach to working with cross‑functional teams

Adaptability to work in a fast‑paced, innovative environment

Security clearance eligibility for nuclear facility access

Competitive Compensation & Benefits

Industry‑leading salary with equity participation

Comprehensive health, dental, and vision coverage

401(k) with company matching

Flexible PTO and professional development budget

Mission‑Driven Impact

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

Innovation at Scale: Work on technology that will power the next generation of nuclear facilities

Safety First: Ensure the highest standards of nuclear safety through rigorous software testing

Why Join TNC? Be part of revolutionizing nuclear construction through real‑time compliance and ITAAC automation. Help transform compliance from a burden into a natural byproduct of structured, digital work processes.

Estimated Starting Salary Range The estimated starting salary range for this role is $150,000 – $200,000 annually less applicable withholdings and deductions, paid on a bi‑weekly basis. The actual salary offered may vary based on relevant factors as determined in the Company’s discretion, which may include experience, qualifications, tenure, skill set, availability of qualified candidates, geographic location, certifications held, and other criteria deemed pertinent to the particular role.

Seniority Level Mid‑Senior level

Employment Type Full‑time

Job Function Nuclear Electric Power Generation

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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