Senior Mechanical Engineer

Job Title: Senior Mechanical Engineer
Status: Full-time, Exempt

Location: Caldwell,
Salary range: $140,000 - $175,000 annual

About us: Industrial Builders (IB) is a heavy industrial EPC contractor headquartered in Caldwell, Idaho, with operations in Buffalo, Missouri. Power generation is our core: geothermal, gas turbine, cogeneration, and advanced nuclear plants, self-performed from foundations to energization. The same crews self-perform heavy civil and industrial work of every kind, from site development and process facilities to the data centers driving new load across the country.

We carry engineering, permitting, civil, fabrication, mechanical, electrical, controls, and commissioning, delivered as EPC construction, modular field assembly, or factory-built systems.

We have more than 1 GW built and under contract, 16 plants including first-of-kind plants in 4 states, a craft contingent of 500+ from concrete to controls, and $240M in bonding capacity per project. We are the balance of plant EPC contractor for Fervo Energy's Cape Station Phase 1 (120 MW) in Beaver County, Utah. Our hiring filter has not changed since Dave Erlebach started the company: hire people who like hard problems.

IB needs a senior mechanical engineer who can design a facility's mechanical systems, then put a number on that work that holds up through commissioning. You will lead mechanical design across our power generation work and the broader heavy industrial projects we self-perform, from process facilities to data centers. On major pursuits, you will build the mechanical estimate with our estimating team.

Mechanical is where our fabrication shop and field crews spend the most hours, so your equipment selections, spool packages, and production rates drive the cost and schedule of the whole job. You will also set IB's mechanical design standards and develop the engineers and designers on your team.

• Weekly pay with Direct Deposit
• Generous PTO Program
• Career Development and professional growth opportunities
• Paid holidays
• 401 K

• Lead mechanical design for power conversion systems: ORC and steam cycles, turbine and generator interfaces, heat exchangers, condensers, and air-cooled, wet, and hybrid cooling systems.
• Own balance of plant mechanical: brine and process piping, pumps, compressors, NCG handling, fire protection, compressed air, and plant utilities.
• Produce and approve P&IDs, equipment specifications, datasheets, line lists, and piping layouts, and run 3D model reviews.
• Perform or direct pipe stress analysis, hydraulic calculations, and equipment sizing.
• Build and defend heat and mass balances, including gross versus net output and parasitic loads.
• Write design criteria and basis of design documents for new plant configurations, including first-of-kind systems.
• Manage the mechanical interface with turbine OEMs, reactor vendors, and package suppliers.
• Design mechanical systems for data center and industrial facilities, including on-site power generation, heat rejection, and cooling water systems.
• Lead the mechanical estimate on major pursuits, working with our estimating team: quantity takeoffs, equipment pricing, labor hours, and production rates.
• Review vendor quotes for scope and technical completeness and recommend equipment selections and long-lead buys.
• Call out mechanical scope gaps, risks, and exclusions before pricing goes out.
• Present the mechanical approach to clients during pursuits and technical clarifications.
• Work with our fabrication shop on spool drawings, fabrication packages, and shop versus field splits.
• Manage mechanical RFIs, submittals, and field changes, and keep the design current with what gets built.
• Support welding programs, including…