Senior Mechanical Engineer

Owen Thomas Group is seeking a Senior Mechanical Engineer to support complex data center, mission-critical, advanced manufacturing, and industrial projects. The role leads HVAC and mechanical system design from conceptual planning through construction, coordinates multidisciplinary teams, and provides technical leadership during design and construction.

Responsibilities:

• Lead the design and engineering of HVAC, cooling, ventilation, and mechanical systems for data center and mission-critical facilities
• Develop mechanical designs from conceptual planning through construction documents
• Perform load calculations, equipment sizing, system selection, and technical analysis
• Design and evaluate chilled water, air-handling, hydronic, and other critical cooling systems
• Prepare and review drawings, specifications, calculations, equipment schedules, and technical documentation
• Coordinate mechanical systems with electrical, structural, architectural, controls, and plumbing disciplines
• Participate in design reviews, constructability assessments, and value-engineering efforts
• Provide technical leadership and mentorship to junior engineers and designers
• Support projects during construction through RFIs, submittal reviews, field observations, and commissioning coordination
• Interface directly with clients and project teams to ensure designs meet performance, reliability, schedule, and budget requirements

Requirements:

• Bachelor's degree in Mechanical Engineering or related engineering discipline
• 7+ years of mechanical engineering/design experience
• Strong knowledge of HVAC and critical cooling system design
• Familiarity with applicable ASHRAE, mechanical, energy, and building codes
• Strong communication skills with the ability to work across multidisciplinary design and construction teams
• Experience supporting data centers, mission-critical facilities, semiconductor, advanced manufacturing, pharmaceutical, or other complex industrial projects strongly preferred
• Experience with Revit, AutoCAD, and mechanical design/calculation software preferred
• PE license preferred