Senior Mechanical Engineer

ST+B Engineering|Genesee, CO (~20 min from Denver)|Immediate Need

Salary Range: $115,000 – $165,000, DOE|Full-time, in-office

ST+B Engineering is a Denver-based MEP consulting engineering firm with a strong reputation in higher education, healthcare, and institutional work across Colorado and the Rocky Mountain region.

We have an immediate need for a Senior Mechanical Engineer to take primary design responsibility on a range of mechanical systems, including HVAC, plumbing, and fire protection, from early design through construction administration. This role carries real project ownership: you'll lead your own projects, manage schedules, coordinate directly with clients and design teams, and provide technical direction.

• Design leadership: take primary design responsibility and responsible charge for mechanical systems across a variety of building types.
• Production oversight: lead production of project designs, drawings, specifications, calculations, and equipment selection.
• Quality: provide peer review and QA/QC of staff engineer work; mentor and develop junior team members.
• Perform 3D Revit and/or 2D CAD work as needed.
• Conduct onsite observations and contract administration for active projects.
• Attend design meetings and OAC meetings as project lead.

• 15+ years of mechanical engineering experience in the building design/consulting industry.
• Colorado Mechanical PE license required, or actively preparing to sit for the exam soon.
• B.S. in Mechanical Engineering or Architectural Engineering.
• Proven ability to lead a project team, manage schedules, and communicate directly with clients.
• Strong problem-solving skills and sound engineering judgment applied to new situations.
• Great attitude and strong people skills; non-negotiable.

• Real ownership: you'll run your own projects, not just execute someone else's design.
• Work/life balance: 9-hour days Monday–Thursday, half days on Friday. Unlimited PTO.
• Flexibility: optional flex time, modified schedules, no corporate feel, small company.

• Major medical with vision and dental, plus employer contributions to HSA medical plans.
• 401(k) plan and flexible spending plan.
• Short- and long-term disability, and life insurance.
• Paid holidays.