Mechanical Designer

Senior HVAC & Plumbing Mechanical Designer

Join a high-performing design team supporting nationally recognized retail brands while working on a fully remote or flexible hybrid basis.

We're seeking a Senior HVAC & Plumbing Mechanical Designer to play a key role in delivering mechanical and plumbing designs for large-scale retail rollout programs across the country. This position is ideal for someone who thrives in a fast-paced environment, enjoys problem-solving, and can balance quality, speed, and consistency while working on multiple projects.

What You'll Do

• Design HVAC and plumbing systems for national retail clients using established prototype store layouts.
• Adapt prototype designs to site-specific conditions and unique client requirements.
• Develop detailed construction documents utilizing AutoCAD and Revit.
• Coordinate closely with architecture, engineering, and project teams to ensure complete and accurate design packages.
• Manage multiple active projects while meeting fast turnaround schedules.
• Review designs for quality, code compliance, and consistency across multiple locations.
• Mentor and support junior designers to improve quality and reduce rework.
• Contribute to process improvements, design standards, and best practices that increase project efficiency.

What We're Looking For

• Strong HVAC design experience in commercial buildings.
• Commercial plumbing design experience.
• Background working within an MEP consulting or architectural environment.
• Advanced AutoCAD proficiency.
• Working knowledge of Revit.
• Ability to manage multiple deadlines in a high-volume production setting.
• Strong attention to detail and commitment to delivering accurate construction documents.
• Excellent communication and coordination skills.

Preferred Experience

• Retail, restaurant, or multi-site rollout project experience.
• Experience working from prototype-based designs.
• Mentoring or training other designers.
• Familiarity with fast-paced project environments requiring quick turnaround times.
• Ability to work independently with minimal oversight.

Why This Opportunity Stands Out

Fully remote option available for non-local employees

Flexible hybrid schedule for St. Louis-area employees

Support nationally recognized retail brands

Highly collaborative team environment

Opportunity to mentor and influence design quality across projects

Consistent project pipeline and long-term stability

Fast-paced work that keeps projects moving and skills sharp

Job Type & Location

This is a Contract to Hire position based out of Saint Louis, MO.

Pay and Benefits

The pay range for this position is $45.00 - $50.00/hr.

Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: • Medical, dental & vision • Critical Illness, Accident, and Hospital • 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available • Life Insurance (Voluntary Life & AD&D for the employee and dependents) • Short and long-term disability • Health Spending Account (HSA) • Transportation benefits • Employee Assistance Program • Time Off/Leave (PTO, Vacation or Sick Leave)

Workplace Type

This is a fully remote position.

Application Deadline

This position is anticipated to close on Sep 15, 2026.

About Actalent

Actalent is a global leader in engineering and sciences services and talent solutions. We help visionary companies advance their engineering and science initiatives through access to specialized experts who drive scale, innovation and speed to market. With a network of almost 20,000 consultants and 5,000 clients across the U.S., Canada, Asia and Europe, Actalent serves many of the Fortune 500. We are proud to be an Engineering News-Record (ENR) Top 500 Design Firm for our engineering design services and a ClearlyRated Best of Staffing® winner for both client and talent service.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing process due to a disability, please email View email address on click.appcast.io for other accommodation options.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.