Senior Mechanical Project Engineer

About Core States Group

At Core States Group, the work you do matters to the clients we serve, the communities we support, and the teams who rely on one another to deliver with excellence. Our cause is powerful: to create a world where all environments improve everyday life.

• COMPENSATION – Competitive wages and bonus programs
• RETIREMENT – We offer a great 401(k) match to help you invest in your future and grow your retirement savings with confidence.
• HEALTHCARE – Excellent health benefits, life insurance options, and supplemental benefit options, giving you the flexibility to choose the coverage that best fits your needs and lifestyle.
• VACATION – Generous PTO time to help you recharge, relax, and maintain a healthy work-life balance.
• PERKS – Team wellness challenges, Costco membership reimbursement, half-day Fridays during summer months + much more!
• WORK‑LIFE BALANCE – A flexible work environment that supports a healthy work‑life balance, whether you’re in the office, working remotely, or somewhere in between.
• PAID PARENTAL LEAVE – Four weeks of fully paid parental leave to give you time to bond with your new addition and support your growing family.
• TUITION REIMBURSEMENT – Advance your education with support! We offer tuition reimbursement to support your learning journey.

As the Senior Mechanical Project Engineer
, supporting our Architecture and Engineering business unit, you will supervise a design team and manage mechanical engineering projects from conception to completion. You will apply your experience in HVAC, plumbing/piping, refrigeration, fire protection, and fuel systems. As part of a multi‑disciplined firm, you will coordinate with Site/Civil Engineers, Electrical Engineers, Structural Engineers, Architects, and Construction Project Managers. You will be responsible for the production of mechanical engineering construction documents while adhering to client requirements, code requirements, and site adjustments.

• Lead client communication and coordination throughout the project lifecycle, ensuring alignment with client expectations and project goals.
• Conduct site visit investigations and generate reports/recommendations based on findings.
• Produce design plans, calculations, and reports with limited direction.
• Coordinate with subconsultants, provide client interaction support, establish and maintain phase and task level budgets, and schedule project phases and tasks.
• Schedule production staff and lead them through tasks, coordinate and assist with addendums, RFIs, and change orders.
• Drive internal coordination, establish QA/QC milestones, and confirm deliverables meet quality standards.
• Assist in coordinating the work of a multi‑disciplined team throughout the design development and contract document phases of a project.
• Participate in business development opportunities and provide RFP support.
• Other related responsibilities as necessary to fulfill the objectives of this role.

• Bachelor's degree in mechanical engineering required
• 10+ years of experience with general building mechanical design production, preferably with commercial projects such as retail, restaurants, grocery, financial, and/or convenience stores.
• PE License required
• Revit, MS Office required, AutoCAD is a plus

This can be either a remote or hybrid (1 or 2 days a week in the office) position based out of the following Core States Group offices:
Long Beach, Ontario, Roseville, CA, or Kent, Puyallup, or Bellevue, WA. If remote, must live in AZ, CA, NV, OR, or WA.

Core States Group designs, builds, and manages programs and projects across North America and has been recognized on top lists throughout the architecture, engineering, and construction (A/E/C) industry. Established in 1999, the company offers integrated solutions with seamless continuity, and many of the world’s most notable brands count on Core States Group to deliver speed to market, cost certainty, and compelling design.

With 23 offices across the United States and Canada, Core States Group is an industry powerhouse that drives innovation and improves everyday life for countless people across several markets, including Convenience, Distributed Generation, Financial, Grocery, Housing, Industrial, Restaurants, Retail, Semiconductor, Tribal, Zero‑Emission Vehicle (ZEV) Infrastructure, and more. Visit us e‑ .

Please do not be concerned if you do not meet every requirement. At Core States we are dedicated to building a diverse and inclusive workplace, so if you are excited about this role but your experience does not align perfectly with every qualification in the job description, we encourage you to apply anyway. You may be just the right candidate for this or other roles.

This position will remain open until it is filled.