Modeling And Simulation Engineer Jobs in Oak Ridge, TN

Merrick & Company is looking for a mid-level Process Engineer to join our team in Oak Ridge, TN. We’re seeking candidates who are passionate about nuclear design, enjoy working on a multidisciplinary team, and appreciate the Knoxville, TN area.

In this role, you will primarily focus on innovative nuclear and energy projects. Successful candidates will collaborate with a diverse team of engineers and designers to deliver high-quality design and engineering solutions.

In-office/WFH hybrid schedules are offered.

• Evaluate and solve complex problems with guidance from more senior staff.
• Work with other disciplines to improve accuracy of the deliverables, to meet schedule, and budget commitments.
• Prepares process design deliverables including:
  • Process Flow Diagrams
  • Piping and Instrumentation Diagrams
  • Equipment sizing calculations
  • Process line sizing calculations
  • Pressure relief device sizing calculations
  • Mass & energy balances / process simulations
  • Equipment and Instrument datasheets
  • Piping/equipment specifications
• Work in a multi-disciplined design team environment.
• Interpret customer requirements or code/standard requirements to establish design criteria.
• Meet with clients to develop relationships.
• Prepare proposal estimates for design work.
• Provide in depth and comprehensive technical peer reviews on design documents, relative to experience level, in a timely manner.
• Effectively delivers status updates to lead engineers and demonstrates efficient task progress.
• Reviews design drawings and documents for specification and scope compliance in a timely manner.
• Technical work/documents are relatively error free and demonstrates self-checking of work before submitting documents for peer review.
• Able to lead project tasks or small projects (depending on experience level) and be involved in client meetings pertaining to task/project.
• Expected to represent the Process group for internal and external clients.
• Coordinates design inputs and design activities and efforts of other engineering disciplines.
• Directs preparation of process design deliverables to more junior engineers.
• Capable of standing in for Process lead in project meetings.
• Ability to act as sole Process lead on small scale projects.
• Able to perform many process tasks autonomously (e.g. calculations, report writing, options study).
• Assistance available from more senior engineers on complex assignments and decision making.
• Reviews and checks the work of other process engineers to determine accuracy and completeness.
• PE Stamp design documents on projects (if candidate has PE license).

• Bachelor’s degree in engineering from A.B.E.T accredited program required.
• 3+ years of related engineering experience required.                          
• Professional Engineer (P.E.) License preferred. Interest in obtaining a P.E. License when minimum qualification years of experience is reached is expected.
• Exhibits generally sound technical knowledge to produce design deliverables with some guidance from senior engineers.
• Ability to apply advanced mathematical concepts (e.g. logarithms, differential equations, integrations, etc.) to solving design problems and analysis test data.
• Ability to respond to common inquiries or requests from customers, regulatory agencies, or members of the business community.
• Ability to develop presentations that effectively convey information to audience.
• Ability to define problems, collect data, establish facts/inputs, and draw valid technical conclusions.
• Working knowledge of industry codes and standards.
• Exercises initiative, judgment and knowledge as required in areas of responsibility.
• Listens well and follows instructions without repeated reminder of instructions or expectations.  And provides clear instructions to others when delegating work.
• An understanding of professional and ethical responsibilities, including demonstrating professional communications with coworkers and customers/clients.
• Provide mentorship to junior engineers.
• Display ability to review technical design documents/packages and be able to identify issues/pitfalls, even if solution is not identifiable.
• Experience using ChemCad/Aspen/HYSYS (or similar) process simulator and AFT Fathom, AFT Arrow (or similar) for hydraulic pipe flow modeling preferred.
• Travel to client sites, as needed.
• Client projects for this position require US Citizenship                                                                

#LI-Hybrid

• Employee Ownership – All eligible U.S. employees participate in our Employee Stock Ownership Plan (ESOP), sharing in the company’s success.
• Comprehensive Compensation & Benefits – Merrick & Company offers a competitive compensation and benefits package including health insurance, dental and vision coverage, and paid time off (PTO).
• Robust Referral Program – Earn incentives for referring top talent to join our team.
• Performance Reviews – Annual reviews to recognize contributions and support career growth.
• Professional Development – Access to ongoing training and development opportunities to build your skills and advance your career.
• Employee Recognition – Formal programs to celebrate achievements and outstanding performance.
• Peer Mentor Program – Get support and guidance through structured mentorship opportunities.
• And More – Additional programs and benefits designed to support your success and well-being.

• Apply online only. No e-mail, hard copy or third-party resumes accepted.
• At Merrick, every resume is carefully reviewed by our team of experienced human recruiters—never by AI. We are committed to a fully human-centered hiring process, ensuring each candidate receives thoughtful, personalized attention at every stage.
• Merrick is an Equal Opportunity Employer, including disability/vets.
• Employment with Merrick is contingent upon completion of a pre-employment background check, MVR check, and drug screen.

#LI-Hybrid

• Bachelor’s degree in engineering from A.B.E.T accredited program required.
• 3+ years of related engineering experience required.                          
• Professional Engineer (P.E.) License preferred. Interest in obtaining a P.E. License when minimum qualification years of experience is reached is expected.
• Exhibits generally sound technical knowledge to produce design deliverables with some guidance from senior engineers.
• Ability to apply advanced mathematical concepts (e.g. logarithms, differential equations, integrations, etc.) to solving design problems and analysis test data.
• Ability to respond to common inquiries or requests from customers, regulatory agencies, or members of the business community.
• Ability to develop presentations that effectively convey information to audience.
• Ability to define problems, collect data, establish facts/inputs, and draw valid technical conclusions.
• Working knowledge of industry codes and standards.
• Exercises initiative, judgment and knowledge as required in areas of responsibility.
• Listens well and follows instructions without repeated reminder of instructions or expectations.  And provides clear instructions to others when delegating work.
• An understanding of professional and ethical responsibilities, including demonstrating professional communications with coworkers and customers/clients.
• Provide mentorship to junior engineers.
• Display ability to review technical design documents/packages and be able to identify issues/pitfalls, even if solution is not identifiable.
• Experience using ChemCad/Aspen/HYSYS (or similar) process simulator and AFT Fathom, AFT Arrow (or similar) for hydraulic pipe flow modeling preferred.
• Travel to client sites, as needed.
• Client projects for this position require US Citizenship                                                                

#LI-Hybrid