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# Sr. Process Systems Engineer

- **Company:** Nucor
- **Location:** Bethlehem, PA, United States
- **Experience:** Expert
- **Salary:** $5,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Performance Testing
- **Published:** October 30, 2026
- **Apply:** https://www.jofdav.com/jobs/60335355-sr-process-systems-engineer

## About the Role

Safety is the most important part of all jobs within Nucor; therefore, candidates must be able to demonstrate the ability to initiate, lead, and uphold safety policies, practices, procedures, and housekeeping standards at all times., * Bachelor's degree in Chemical Engineering or closely related engineering discipline.

 * 8+ years of process/process systems engineering experience.
 * Minimum 5 years of substantial hands-on P&ID development experience, beyond review or approval responsibilities.
 * Demonstrated experience taking P&IDs through at least two major project phases, such as conceptual design, detailed engineering, construction/IFC, commissioning, or as-built.
 * Experience serving as P&ID owner, lead developer, or responsible process engineer on at least one significant industrial process project.
 * Demonstrated ability to develop P&IDs for complete process systems, including equipment, piping, valves, instrumentation, controls, safeguards, relief systems, vents, drains, and utility interfaces.
 * Experience leading multidisciplinary P&ID reviews and resolving comments across engineering disciplines.
 * Strong knowledge of fluid flow, heat transfer, process equipment, process controls, hydraulics, and process safety.

Nice to Have:

 * 5+ years of direct experience developing P&IDs for cryogenic ASUs or industrial gas facilities.
 * Demonstrated P&ID ownership for at least one ASU project from detailed design through commissioning or as-built status.
 * Experience with oxygen, nitrogen, and argon systems, cryogenic distillation, brazed aluminum heat exchangers, molecular sieve purification, compressors, expanders, and cryogenic pumps.
 * Familiarity with applicable ASME, API, CGA, NFPA, OSHA/PSM, IEC, and ISA requirements and practices.

## Description

We are seeking a Senior Process Systems Engineer to serve as the technical owner for Process & Instrumentation Diagrams (P&IDs) for cryogenic air separation projects.

The successful candidate will have significant hands-on experience developing, owning, and maintaining P&IDs from initial concept through detailed engineering, construction, commissioning, and final as-built documentation. Direct experience with cryogenic Air Separation Units (ASUs) producing oxygen, nitrogen, and argon is strongly preferred.

This engineer will be accountable for ensuring P&IDs accurately translate process design intent into safe, operable, maintainable, and constructible process systems and will lead P&ID coordination across process, mechanical, piping, instrumentation and controls, safety, suppliers, construction, commissioning, and operations., * Serve as the technical owner and primary engineering authority for project P&IDs, maintaining technical integrity and consistency throughout the project lifecycle.

 * Personally develop and direct P&ID development from conceptual design through detailed design, IFC/construction, commissioning, redlines, and final as-built status.
 * Translate PFDs, heat and material balances, equipment requirements, operating philosophies, and process design criteria into complete P&IDs.
 * Define piping, equipment, isolation, bypass, vent, drain, relief, instrumentation, control, alarm, trip, shutdown, and safeguarding requirements.
 * Lead formal multidisciplinary P&ID reviews and resolve comments and technical interfaces.
 * Incorporate vendor information, HAZOP/PHA actions, design changes, field modifications, and commissioning discoveries into controlled P&ID revisions.
 * Perform field walkdowns and reconcile engineering drawings against installed systems to support accurate as-built documentation.
 * Establish and maintain P&ID standards, symbology, design conventions, checklists, and quality requirements.
 * Mentor engineers and designers in P&ID development and review.
 * Participate in or lead HAZOP/PHA and other process safety reviews.
 * Support equipment specification, technical bid evaluation, vendor reviews, construction, commissioning, startup, performance testing, and troubleshooting.