Sr Process Engineer Jobs in Oak Ridge, TN (NOW HIRING)

Merrick & Company is seeking a Process Engineer to join our team! This remote position will be a part of our Nuclear Services Technology Team and will support a variety of projects.

The selected candidate will contribute to advanced nuclear and energy-related projects, ensuring that process systems are designed with effective control, monitoring, and automation strategies. This position requires close coordination with multidisciplinary teams, including mechanical, electrical, and I&C engineers.

• Develop and refine Piping & Instrumentation Diagrams (P&IDs), Process Flow Diagrams (PFDs), and General Arrangement Drawings, incorporating detailed instrumentation and control intent.
• Perform process, equipment, and hydraulic sizing calculations.
• Conduct sizing of control valves, pressure relief devices, and flow elements, considering system dynamics and control performance.
• Define and document process control philosophies, control narratives, and functional descriptions.
• Design and specify instrumentation systems, including transmitters, analyzers, and control elements.
• Partner with I&C engineers to develop PLC/ PCS architectures, I/O lists, control logic, and alarm management strategies.
• Translate process requirements into automated control strategies, including loop tuning and advanced control approaches where appropriate.
• Support HAZOPs, operability studies, and control system design reviews.
• Review engineering deliverables for technical accuracy, completeness, and consistency.
• Coordinate with cross-functional teams to ensure integrated process and control system design.

• Bachelor’s degree in chemical engineering or related discipline from an ABET-accredited program.
• Eight (8) years of process engineering experience.
• Demonstrated ability to integrate process design with control system implementation.
• Experience developing P&IDs with comprehensive instrumentation scope and control intent.
• Working knowledge of process control principles, system dynamics, and loop tuning.
• Familiarity with PLC/PCS systems, control logic development, and industrial automation architectures.
• Experience with ChemCad, AFT Fathom, and AFT Arrow for process and hydraulic modeling.
• Client projects for this position require U.S. Citizenship.

• Experience with Department of Energy (DOE) nuclear projects.
• Familiarity with ISA standards and nuclear I&C design requirements.
• Professional Engineering license or actively working toward licensure.

• 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-Remote

• Bachelor’s degree in chemical engineering or related discipline from an ABET-accredited program.
• Eight (8) years of process engineering experience.
• Demonstrated ability to integrate process design with control system implementation.
• Experience developing P&IDs with comprehensive instrumentation scope and control intent.
• Working knowledge of process control principles, system dynamics, and loop tuning.
• Familiarity with PLC/PCS systems, control logic development, and industrial automation architectures.
• Experience with ChemCad, AFT Fathom, and AFT Arrow for process and hydraulic modeling.
• Client projects for this position require U.S. Citizenship.