---
title: 'Staff Mechanical Engineer at The Nuclear Company'
canonical: 'https://feeny.ai/job/staff-mechanical-engineer-the-nuclear-company-columbia-9qzgad40by8q'
type: 'job'
last_seen: '2026-09-05'
---

# Staff Mechanical Engineer at The Nuclear Company

- **Company:** The Nuclear Company
- **Location:** Columbia, SC
- **Posted:** 2026-09-01
- **Last confirmed live:** 2026-09-05
- **Apply:** https://job-boards.greenhouse.io/thenuclearcompany/jobs/5412249008

## Job description

The Nuclear Company is the fastest growing AI tech-enabled startup in the nuclear and energy space, pioneering a fleet-scale approach to building the next generation of nuclear reactors. Through our design-once, build-many model, we're accelerating the deployment of safe, reliable, and affordable nuclear energy.

We operate with an AI-first mindset. Every employee is expected to leverage AI, technology, and the Nuclear Operating System (NOS) as integral components of their role to improve the quality, speed, and impact of their work. We expect every team member to continuously identify opportunities to automate workflows, enhance decision-making, improve processes, and contribute to the ongoing evolution of NOS as a strategic operating capability that enables The Nuclear Company to scale with excellence.

We hire people who are driven by purpose, thrive in ambiguity, and are energized by building what has never been built before. Our team combines intellectual curiosity with high agency, embraces candid feedback and continuous learning, and holds themselves and others to exceptional standards. Our values—Transparency, Responsibility, Unity, Scrappy, and Tenacity—guide how we hire, collaborate, and make decisions every day. They are not words on a wall; they are the standard by which we operate. TRUST is the foundation of our safety culture, fostering intellectual honesty, accountability, and open communication, while our values challenge every team member to execute with urgency, humility, resilience, and an unwavering commitment to our mission.

## About the role

The Staff Mechanical Engineer will be a technical lead responsible for designing, analyzing, and maintaining complex mechanical systems and components for nuclear power plants (operating or a new build) or advanced reactor projects. They will work with a multi-discipline team of engineers in the design, analysis, and evaluation of systems and components using engineering software, including support to lead engineers. They apply advanced engineering principles and engineering codes & standards, such as AMSE and ANSI, to develop solutions that meet strict safety, regulatory, and quality standards. They will resolve technical issues for operating nuclear power plants, new plants, and other nuclear and non-nuclear projects. This role supports Corporate initiatives as well as ongoing construction projects.

## Responsibilities

- Design and analysis of mechanical components and systems.
- Prepare engineering calculations, drawings and specifications.
- Prepare or review engineering modification packages.
- Provide technical guidance to junior engineering staff.
- Diagnose mechanical equipment failures, support root cause analyses, and implement corrective actions.
- Conduct calculations and analyses to ensure the structural integrity and performance of mechanical systems.
- Review vendor documentation and technical specifications.
- Participate in design reviews and technical meetings.
- Interface with engineers in other disciplines such as civil/structural, electrical and instrumentation and controls (I&C).
- Support the implementation of quality assurance and quality control programs.
- Prepare technical reports and documentation.

## Experience

- Bachelor of Science (B.S.) degree in Mechanical Engineering from ABET Accredited University.
- Engineering in Training (EIT) license. Professional Engineer license is a plus.
- 8+ years of engineering experience.
- Strong understanding of mechanical engineering principles and practices.
- Proficiency in engineering software (e.g., AutoCAD, SolidWorks, ANSYS).
- Must be capable of obtaining security clearance for unescorted access to a nuclear station.
- Good communication and interpersonal skills.
- Strong analytical and problem-solving skills.

## Preferred Experience

- Previous causal analysis experience is a plus.
- Previous qualified standard design experience is a plus.
- AI-Enhanced Simulation & Analysis: Familiarity with AI-augmented engineering simulation tools that complement traditional software (e.g., ANSYS, SolidWorks) to accelerate structural integrity calculations, thermal-hydraulic analyses, and performance optimization of mechanical systems and components.
- Digital Twin & Smart Monitoring: Familiarity with digital twin technologies or IoT-integrated monitoring systems that use real-time data and machine learning to model mechanical system behavior, enabling proactive maintenance planning and performance trending across plant systems.

## Benefits

- Competitive compensation packages
- 401k with company match
- Medical, dental, vision plans
- Generous vacation policy, plus holidays

Estimated Starting Salary Range The estimated starting salary range for this role is $xxxxx - $xxxxx 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.

## 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.

Recruiting Fraud Alert Your safety is our priority. We want to ensure your job search stays secure. Please note that the team at The Nuclear Company only communicates through official @thenuclearcompany.com email addresses. We will never ask for payments or sensitive financial information at any stage of our recruitment process. For your peace of mind, please verify all openings and submit your applications directly through [our official careers page](https://www.thenuclearcompany.com/careers).

## About The Nuclear Company

## Company Overview
- **One-liner**: The Nuclear Company is a fleet-scale nuclear deployment platform that integrates AI-driven software (NOS) with full-stack construction, servicing, and operations to deliver clean, reliable baseload power across the United States.
- **Entity Type**: Private (Series A, $46.3M led by Eclipse; total funding $66M)
- **Headquarters**: Lexington, Kentucky, United States
- **Founded**: 2023
- **Founders**: Not publicly available

## Core Business
- **Primary industry**: Nuclear Electric Power Generation
- **Target customers**: B2B – utilities, energy developers, and grid operators seeking large-scale, carbon-free baseload power
- **Mission statement**: “We’ll meet the nation’s surging energy demand with safe, reliable, clean baseload power” – enabled by fleet-scale nuclear deployment and a digital, AI‑driven operating model.

## Products & Services
- **Fleet-Scale Nuclear Deployment**: A “design once, build many” approach that standardizes reactor designs across multiple sites to drive down costs and shorten timelines through repeatability.
- **Nuclear Services (via Powerhouse Resources)**: World‑class maintenance, outage execution, turbine services, and electrical / I&C support for existing nuclear plants.
- **NOS (Nuclear Operating System)**: A purpose‑built, AI‑driven software platform that integrates data and workflows across the entire nuclear lifecycle – from siting and development through operations, maintenance, and security – making projects measurable, controllable, and repeatable.

## Market Standing
- **Valuation / Market Cap**: Not publicly available
- **Key Metric**: Total funding of **$66M** (Seed $19.7M in May 2024; Series A $46.3M in June 2025 led by Eclipse)
- **Notable Investors / Partners**: Eclipse (lead Series A investor); no other named partners publicly
- **Growth Signals**:
  - Headcount grew **+350% YoY** to 129 employees (as of mid‑2026)
  - Operations in 5 countries (US, Canada, Nigeria, Norway, UK)
  - Key executive hires: Jason Thompson (President & CFO), former U.S. NRC leader as VP of Regulatory Affairs
  - 37 active job postings; monthly job growth +2.8%, annual +19.4%
  - Team includes veterans from Southern Nuclear, Fluor, Microsoft, and Redwood Materials

## Competitive Advantages
- **Full‑stack vertical integration** – controls deployment, services, and software under one operating model, eliminating hand‑off risks
- **Proprietary AI platform (NOS)** – only purpose‑built AI in the West for nuclear infrastructure; provides real‑time guidance to construction crews and automates compliance
- **Fleet‑scale replication** (“Design Once, Build Many”) designed to break the historical pattern of one‑off builds running over budget and behind schedule
- **Deep domain expertise** – leadership team collectively has hundreds of years of experience in large‑scale energy projects, including the most recent US nuclear builds

## Strategic Focus
- Deliver “on‑time, on‑budget” construction of new nuclear fleets at scale
- Expand service contracts for existing plants while generating operational data to feed NOS improvements
- Continue building the engineering and skilled‑trades workforce (currently hiring Senior Recruiter, Lead Metallurgical Process Engineer, General Counsel, Director of Product Engineering, etc.)
- Position nuclear as the reliable baseload partner for AI‑driven energy demand

## Why Work Here
- **Mission‑driven culture** – employees work at the intersection of energy security, clean technology, and national infrastructure
- **Hybrid work model** – employees engage in a mix of remote and on‑site work, with offices in Lexington, KY and Washington, DC [builtin.com](https://builtin.com/company/the-nuclear-company)
- **Rapid growth environment** – 350% YoY headcount increase, recent Series A, and active hiring across technical and leadership roles
- **Engineering & skilled trades focus** – 40% of the workforce is in technical roles; opportunities for software engineers, research scientists, electricians, machinists, and project managers
- **Notable perks** – free food mentioned in company updates; employee rating (1 review) scores compensation 5/5 and career 5/5, though culture rated 1/5 (single data point)

## Sources
1. [thenuclearcompany.com](https://www.thenuclearcompany.com/) – Official website (services, NOS, mission)
2. [linkedin.com/company/the-nuclear-company](https://www.linkedin.com/company/the-nuclear-company) – Company page (headcount, funding, executives, growth)
3. [builtin.com/company/the-nuclear-company](https://builtin.com/company/the-nuclear-company) – Job listings, office locations, hybrid policy
4. [job-boards.greenhouse.io/thenuclearcompany](https://job-boards.greenhouse.io/thenuclearcompany) – Active job postings (provided by user)

## Other roles at The Nuclear Company

- [Senior Manager, Data Engineering](https://feeny.ai/job/senior-manager-data-engineering-the-nuclear-company-washington-kwh0wjy32w5q) — Washington, DC
- [Accounts Receivable Manager](https://feeny.ai/job/accounts-receivable-manager-the-nuclear-company-columbia-dbamc15t8wpj) — Columbia, SC / Washington, DC
- [Accounts Payable Manager](https://feeny.ai/job/accounts-payable-manager-the-nuclear-company-columbia-ff6g97w4d53b) — Columbia, SC / Washington, DC
- [Senior Systems Administrator](https://feeny.ai/job/senior-systems-administrator-the-nuclear-company-washington-dc-or-columbia-qv1hq5f0zsej) — Washington Dc OR Columbia, SC
- [Staff Civil-Structural Engineer](https://feeny.ai/job/staff-civil-structural-engineer-the-nuclear-company-columbia-65fb3bjwwjs8) — Columbia, SC
- [Staff Electrical Engineer](https://feeny.ai/job/staff-electrical-engineer-the-nuclear-company-columbia-ghdy0k6n075c) — Columbia, SC
- [Director of Accounting, Deployment](https://feeny.ai/job/director-of-accounting-deployment-the-nuclear-company-washington-dc-or-columbia-367rh85kpddz) — Washington Dc OR Columbia, SC
- [Vice President, Engineering](https://feeny.ai/job/vice-president-engineering-the-nuclear-company-columbia-cd51vjy35w1m) — Columbia, SC
- [Director of Health, Safety & Environmental (HSE)](https://feeny.ai/job/director-of-health-safety-environmental-hse-the-nuclear-company-columbia-pxm5gb7c02y9) — Columbia, SC / Washington, DC
- [Project Procurement Manager (Greenfield Projects)](https://feeny.ai/job/project-procurement-manager-greenfield-projects-the-nuclear-company-columbia-6ywy4w9kwmmg) — Columbia, SC