Senior Mechanical Engineer

Senior Mechanical Engineer – Job Description The Senior Mechanical Engineer is responsible for leading the design, analysis, and lifecycle management of complex mechanical and thermal-fluid systems in highly regulated, reliability-driven environments. This role oversees system architecture development, performs advanced engineering analysis, and supports projects from initial requirements and conceptual design through fabrication, testing, and commissioning . Key Responsibilities Lead the design and development of mechanical systems including pressure vessels, rotating equipment, heat exchangers, piping systems, and thermal-fluid components. Perform structural, thermal, and fluid flow analysis using engineering tools such as ANSYS, CFD, and hydraulic modeling software to validate system performance. Conduct steady-state and transient thermal and hydraulic calculations to ensure systems meet performance and safety requirements. Develop and maintain engineering documentation including calculation packages, design basis reports, technical specifications, and fabrication drawings. Ensure designs comply with applicable industry codes and standards such as ASME Boiler & Pressure Vessel Code, B31.3, API, and other regulatory requirements. Collaborate with cross-functional teams including electrical, civil, and controls engineers to integrate mechanical systems into larger projects. Support procurement and vendor management by preparing technical specifications, reviewing vendor submittals, and verifying equipment compliance. Lead design reviews, risk assessments, and root cause investigations to improve system reliability and safety. Manage engineering change control and configuration management to maintain design integrity and traceability. Provide technical leadership and mentorship to junior engineers and support manufacturing, installation, and commissioning activities. Typical Deliverables Mechanical system designs and equipment specifications FEA/CFD analysis reports and performance calculations P&IDs, general arrangement drawings, and fabrication packages Vendor technical evaluations and procurement documentation Engineering change orders and technical reports Tools & Technologies Engineering Analysis: PipeFLO and thermal-fluid modeling tools This role plays a critical part in ensuring mechanical systems are safe, code-compliant, reliable, and optimized for performance throughout the project lifecycle . Liberty Personnel Services, Inc. 1001 Conshohocken State Rd, Ste 2-410 #J-18808-Ljbffr