Mechanical Engineer – On‑Site Process Equipment Design

Westerman; Casper (WY); On-site; USD 85,000 - 120,000; Full time

Job summary

Westerman, Inc. is seeking a Mechanical Engineer to support both pre‑sale technical and post‑sale detailed engineering activities. The role defines technical solutions for proposals, quotes, and projects, and leads the detailed engineering to develop fabrication drawing packages and Bills of Materials.

This position is fully on‑site at one of our facilities: Casper, WY; Bremen, OH; Tulsa, OK. The successful candidate will evaluate customer data, develop P&IDs, perform process calculations, and

Qualifications

• Bachelor’s degree in Chemical, Mechanical, Petroleum, Electrical, or Instrumentation Engineering from an ABET accredited university.
• 3–5 years of experience in a similar role within a manufacturing environment with engineered‑to‑order products.
• Knowledge of ASME, API, NFPA, ANSI, and other applicable standards.
• Experience applying NFPA requirements for electrical area classification to designs.
• Experience specifying and designing process control systems comprising pneumatic, electro‑mechanical, and electronic devices.
• In‑depth knowledge of national and international codes and standards for oil & gas process equipment design and fabrication.
• Experience working within multidisciplinary teams and managing work against safety, quality, cost, and time constraints.
• Ability to develop process equipment schemes and layouts from conceptual basis considering operability, maintenance, and safety.
• Multi‑tasking ability and ability to work well under pressure with competing priorities.
• Excellent written and verbal communication skills.
• Ability to comprehend project specifications and contract documents.
• Ability to review and interpret P&IDs.
• Strong interpersonal communication skills.
• Strong problem‑solving and organizational skills.
• Proficiency in Microsoft Office (Outlook, Word, Excel, Project, PowerPoint).
• Proficiency in ProMax and Codeware COMPRESS.

Responsibilities

• Evaluate customer supplied data (3D CAD files, drawings, scopes of work, and quality documents) to extract requirements that impact designs for quoting and detailed engineering.
• Actively engage with external customers, project managers, and the commercial team to discuss gaps in scope of supply versus customer requirements.
• Pursue identification of customer‑induced scope changes and Escalate to the project manager or commercial lead for consideration.
• Develop P&IDs from scratch or by redlining existing drawings to communicate project requirements to Estimators and Drafting.
• Perform equipment sizing calculations using process simulation software (ProMax), in‑house spreadsheets, etc.
• Review and approve all 3D model and drawings for assigned projects in accordance with Westerman’s standard operating procedures.
• Perform process design calculations for control valves, pressure regulators, pressure safety valves, and pressure vacuum relief valves.
• Perform ASME pressure vessel code calculations using Codeware COMPRESS.
• Other duties as required and assigned.

Skills

Standards knowledge

NFPA requirements

Process control systems design

P&ID review

Office software

Engineering calculations

ASME/API/NFPA/ANSI standards

Multidisciplinary teamwork

Communication skills

Project constraints management

Problem-solving

Education

ABET-accredited engineering degree

Tools

ProMax

Codeware COMPRESS

Job description

Westerman, Inc. is seeking a Mechanical Engineer to support both pre‑sale technical and post‑sale detailed engineering activities. The role defines technical solutions for proposals, quotes, and projects, and leads the detailed engineering to develop fabrication drawing packages and Bills of Materials.

This position is fully on‑site at one of our facilities: Casper, WY; Bremen, OH; Tulsa, OK. The successful candidate will evaluate customer data, develop P&IDs, perform process calculations, and