Project Engineer, Thermal Management/Utility Scale Energy Storage

Project Engineer Thermal Management

Apex Systems, the Nation's 2nd largest Technical Staffing and Services Firm, has an opening for a Project Engineer Thermal Management with a Fortune 500 Company in Juno Beach, Florida, Contract Position!

Location: Juno Beach, FL 33436 / open to Remote with 25% travel

Length: 12+ months contract with possible extension

Payrate range: $60 - $65/hr.

Schedule: Monday- Friday 8am-5pm

The Utility Scale Energy Storage team is seeking a Project Engineer specializing in Thermal Management for Lithium-Ion Battery Systems. In this role, you will support BESS projects from design through commissioning, collaborating across the organization to deliver best-in-class energy storage solutions.

You will define scope, provide engineering oversight, and serve as a technical resource for cross functional teams — combining strong analytical skills with a customer-service mindset for both internal and external stakeholders. The ideal candidate is a detail-oriented problem solver who can identify lessons learned, implement process improvements, and develop tools and standards that maximize BESS performance.

Key Responsibilities

• Evaluate design aspects of major components for utility-scale energy storage projects
• Prepare technical scopes of work for thermal management studies and designs for incorporation into contract documents
• Support projects from conception through commissioning, including on-site commissioning activities
• Provide engineering guidance to project teams and oversee external Engineers of Record
• Collaborate with suppliers on equipment sizing, controls, technology compatibility, and integration
• Partner with multi-disciplined teams on problem solving, system integration, and process improvement
• Identify value engineering opportunities and track emerging technologies
• Perform other job-related duties as assigned

Preferred Experience

• Subject matter expertise in thermal management for energy storage systems, including one or more of: hydronic HVAC, air-cooled HVAC, battery heat generation/dissipation, or BESS design
• Hands-on experience with VRF, hydronic, and air-side HVAC systems
• Strong knowledge of energy storage technologies, including battery chemistries, power conversion units, and DC/DC converters
• Familiarity with relevant safety standards: UL1973, UL9540, UL9540A, NFPA 855, NFPA 70E, NEC, and applicable IFC/IBC sections
• Effective communicator, able to convey technical concepts to diverse audiences

Education & Experience

• B.S. in Mechanical Engineering or related field from an ABET-accredited program
• 5+ years of engineering experience