Senior Mechanical Engineering-Design

Clayco is a full-service, turnkey real estate development, master planning, architecture, engineering, and construction firm that safely delivers clients across North America the highest quality solutions on time, on budget, and above and beyond expectations. With $8.1 billion in revenue for 2025, Clayco specializes in the "art and science of building," providing fast track, efficient solutions for mission critical, industrial, life sciences, power & energy, aviation, commercial, institutional, residential and sports & entertainment related building projects.

LJC Design & Engineering is a full-service architecture, engineering, and design firm committed to enhancing the quality of the human experience through integrated design. We are a team of high-energy professionals who share a passion for design, a collaborative approach, and a casual culture. We solve challenges by leveraging the collective expertise and ingenuity of the best and brightest minds across development, design, and construction.

The Senior Mechanical Engineer will be working with in-house Development, Architecture, and Construction teams to provide Mechanical HVAC Design and Quality Assurance on projects for our nationwide clients.

Projects will consist of distribution, industrial manufacturing, life sciences, food and beverage, or other industrial process markets for existing building improvements and new construction.

Lead mechanical HVAC engineering design and analysis including conceptual and schematic design, feasibility studies, and full construction documentation (drawings and specifications).

Design mechanical systems including water, chilled water, HVAC, wastewater, cooling towers/condensers, boiler/steam, hot water, compressed air, and plumbing.

Lead and mentor junior level Mechanical Engineers and Designers.

Coordinate with equipment vendors, Procurement, and Preconstruction groups throughout the design process to support target-based value designs.

Senior Mechanical Engineer is involved from the beginning to foresee preliminary design challenges.

Bachelor’s Degree in Mechanical Engineering from an ABET accredited university or college.

PE License is required to seal engineering documents, with the ability to attain licenses in multiple states.

Minimum of 10 years of related HVAC design experience, and knowledge of HVAC Systems Applications and Implementation.

Knowledge of building mechanical codes and building material thermal values along with the ability to perform accurate load calculations.

Proficiency in AutoCAD required, Revit experience preferred.

We work on creative, complex, award-winning, high-profile jobs.

2025 ENR Midwest – Midwest Contractor (#1).

2025 ENR Top 100 Design-Build Firms – Design-Build Contractor (Top 5).

2025 ENR Top 100 Green Contractors – Green Contractor (Top 3).

2025 ENR Top 25 Data Center Builders - Data Center Contractor (Top 3).

Discretionary Annual Bonus: Subject to company and individual performance.

Medical, dental and vision plans, 401k, generous PTO and paid company holidays, employee assistance program, flexible spending accounts, life insurance, disability coverage, learning & development programs and more!

Education, qualifications, skills, training, experience, certifications, internal equity, and location.