Mechanical Engineer - Nuclear

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Date:Sep 16, 2026

Location: Pittsburgh, PA, US

Company: Hatch

Requisition ID: 100293

Job Category: Energy

Location: Pittsburgh, PA, United States

Join a company that is passionately committed to the pursuit of a better world through positive change. With more than 70 years of business and technical expertise inmining ( ,energy ( , andinfrastructure ( , our10,000 colleagues ( in150 countries ( tirelessly work toward bettering the industries in which we operate. With practical solutions that are safe, innovative and sustainable, we think globally while acting locally. Are you looking for an opportunity to join a diverse group of professionals who are committed to remaining exceptional? We look forward to hearing from you.

Our energy expertise in the oil and gas sector comprises the entire value chain - upstream, midstream, and downstream; and in the power sector includes thermal, nuclear, waterpower, renewable, hybrid, transmission and distribution, and grid modernization. Join our vision of a low-carbon world and help make positive change!

Hatch is currently seeking a highly motivated Senior Mechanical Engineer – Nuclear to join our team in the United States.

In the nuclear sector, we are busier than ever. Our teams are developing first‑of‑a‑kind programs in fusion energy development, small and advanced modular reactor design, nuclear sustainability for waste processing and volume reduction, and transformation of the long‑term storage landscape, to name just a few.

If you are an entrepreneur with a technical soul, we want to hear from you. Join our team and help make a consequential difference.

You will be part of our nuclear group, where we ensure world‑class project delivery through the skills of our people, methodologies, governance, and systems.

As a successful candidate, you will:

• Perform mechanical and piping engineering functions within multidisciplinary teams across nuclear and other sectors.

• Assist project teams in understanding project requirements related to scope, execution strategy, cost, and schedule.

• Ensure delivery of project requirements related to scope, cost, and schedule while following the Nuclear Quality Management System (NQMS).

• Support site field visits to obtain information and data in support of projects.

• Prepare, support, and review equipment identification and selection activities, including sizing, layout, technical specifications, and vendor information reviews.

• Prepare, support, and review piping system design activities, including hydraulic analysis, piping and instrumentation diagram (P&ID) development, material specification development, stress analysis, and layout.

• Support the population of information and attributes into the data‑centric project environment.

• Interface with vendors throughout the design and procurement process.

• Support direct interfaces with clients throughout the project lifecycle.

• Participate in HAZOP reviews.

• Assist in the resolution of engineering issues during the project lifecycle, including planning, design, procurement, fabrication, construction, and commissioning phases.

• Promote and maintain the application of ethical and professional practices in the execution of engineering work.

• Adhere to and promote the Hatch corporate safety culture.

• Support Hatch business development efforts and strategic initiatives, including the preparation of proposals and pursuit plans for the nuclear industry.

You bring to the role:

• Bachelor of Science degree in Mechanical Engineering from an accredited university.

• Approximately 7–10 years of engineering experience.

• Strong deliverable focus with the ability to plan your work effectively.

• Ability to learn and understand inter‑discipline dependencies related to mechanical and piping engineering functions.

• Exposure to procurement, contracting, and commissioning methodologies.

• Experience working in pressurized water reactor (PWR) and boiling water reactor (BWR) plants.

• Experience working with advanced Generation IV reactors (HTGRs, sodium‑cooled reactors, molten salt reactors, etc.) is desirable.

• Experience working within a nuclear quality management system (ASME NQA‑1).

• Sound knowledge of codes and standards applicable to the nuclear industry.

• Well‑developed communication, negotiation, and interpersonal skills.

• Ability to communicate complex technical information clearly to clients, regulators, vendors, and multidisciplinary project teams.

• Professional Engineer (PE) license or Engineer‑in‑Training (EIT) status is preferred.

• Site experience in a technical role is preferred.

• Eligibility to work on export‑controlled projects subject to 10 CFR 810.

• Ability to travel for short-term business trips domestically and internationally

Why join us?

• Work withgreat people ( to make a difference

• Collaborate on excitingprojects ( to develop innovative solutions

• Top employer (

What we offer you?

• Flexible work environment

• Long term career development

• Think globally, work locally

Don't meet every single requirement? You don't need to. At Hatch, we are building a diverse, inclusive workplace that fosters innovation. If you're interested in this role, we encourage you to apply even if your past experiences don't perfectly align with the skills we've listed.

We're committed to fostering a workforce that reflects thediversity ( of thecommunities ( in which we operate and serve. Hatch is an Equal Opportunity Employer that considers applicants without regard to age, race, color, national origin, citizenship, religion, creed, gender, sexual orientation, marital status, disability, veteran, or any other protected status. If you have any accommodation requirements, please let us know. We'll do our best to meet your needs in accordance with applicable local legislation.

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Nearest Major Market:Pittsburgh Job Segment: Nuclear Engineering, Construction, Mechanical Engineer, Thermal Engineering, Nuclear, Engineering, Energy

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