Senior-Level Process Engineer (Hybrid/Remote)

As a senior-level process engineer, you will provide senior level technical leadership in the design, analysis, and documentation of nuclear and chemical process systems, supporting projects from conceptual development through detailed design and execution of DOE and nuclear facility projects.

The Senior Process Engineer serves as a technical authority for process systems, performs and approves complex engineering calculations, develops process and equipment specifications, and ensures compliance with applicable nuclear, safety, and quality requirements.

Key Responsibilities:

Lead and independently execute process engineering design activities for nuclear and chemical process systems

Perform, review, and approve complex process engineering calculations

Develop and review:

Engineering calculations

Process flow diagrams (PFDs)

Piping and instrumentation diagrams (P&IDs)

Process equipment specifications and data sheets

Technical reports and formal design documentation

Apply engineering judgment to resolve complex technical and regulatory issues

Ensure process designs comply with applicable DOE requirements, nuclear safety expectations, and quality procedures

Support design reviews, readiness activities, and technical evaluations

Interface with safety, operations, mechanical, electrical, and I&C disciplines to ensure fully integrated solutions

Serve as a technical lead or subject matter expert (SME) within multidisciplinary project teams

Provide technical direction and mentoring to junior engineers and designers

Support project planning, scope development, and execution strategies

Interface directly with clients, project management, and stakeholders as a senior technical contributor

Support procurement, construction, startup, and operational readiness activities as required

Review vendor submittals and technical documentation

Support troubleshooting, design changes, and configuration control processes

Basic Qualifications:

B.S. Chemical Engineering from an ABET accredited engineering program

15+ years in in process engineering roles within industrial, nuclear, or government facilities U.S. Citizenship required

Demonstrated experience performing and approving formal process engineering calculations

Strong background in process system and equipment specification

Experience working within regulated environments and structured engineering procedures

Professional Engineer (PE) license, required

Preferred Qualifications:

In addition to the Basic Qualifications the ideal candidate might also have:

Prior nuclear, DOE, or high‑hazard facility design experience

Experience with nuclear material or uranium processing systems

Experience working under a formal quality program (ISO 9001, NQA 1)

Experience managing or reviewing the work of other engineers or designers

Professional Engineer (PE) license, or ability to obtain

Strong analytical, problem‑solving, and communication skills

Master’s degree in Engineering from an ABET‑accredited institution

Self‑motivated, detail‑oriented, and team‑focused professional

Work Environment:

Primarily office-based work in a secure engineering environment

Amentum office location is preferred; hybrid or remote work may be available by prior agreement based on role and project requirements

Occasional exposure to industrial facilities, which may include elevated noise levels, hazardous materials, or controlled areas

Site visits may be required

Physical Requirements:

Ability to sit or stand for extended periods

Ability to lift up to 35 lbs occasionally

Vision correctable to 20/20

Ability to read and use computer‑aided design software effectively

Appropriate PPE and training will be provided as required

Compliance & Eligibility Requirements:

U.S. Citizenship required (no dual citizenship)

Valid driver's license is required

Ability to obtain and maintain a security clearance

Ability to pass pre-employment background investigation and drug screening

Willingness to work overtime or outside normal hours as needed

Professional appearance appropriate for a customer‑facing engineering environment

Travel required: less than 10%

Compensation Details:

$140,000 - $190,000

The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview:

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

Health, dental, and vision insurance

Paid time off and holidays

Retirement benefits (including 401(k) matching)

Educational reimbursement

Parental leave

Employee stock purchase plan

Tax-saving options

Disability and life insurance

Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting:

09/10/2026 - Until Filled Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters .