Senior Mechanical Design Engineer

Stephens Mechanical Engineering LLC; Biloxi (MS); Hybrid; USD 90,000 - 135,000; Full time

Benefits offered by this job

Annual performance bonuses

Half-day Fridays

Company vehicle for project site visits

Hybrid schedule possibilities

Paid training and professional development

Job summary

Stephens Mechanical Engineering LLC in Biloxi is seeking a Senior Mechanical Design Engineer to lead HVAC and plumbing design for commercial projects. You'll manage project efforts from concept through construction, ensuring high-quality designs, and mentoring junior engineers.

The role offers opportunities to work on diverse projects, including hospitals, schools, and military installations, within a supportive work culture that values professional growth.

Qualifications

• 5+ years of using AutoCAD for HVAC and plumbing system design.
• Experience with VRF, hydronic, and DX HVAC systems.
• Ability to mentor junior engineers and provide technical guidance.

Responsibilities

• Lead design for HVAC and plumbing systems on commercial projects.
• Develop construction documents and technical specifications.
• Coordinate with architects and contractors effectively.

Skills

HVAC design expertise

Plumbing systems design

Professional communication skills

Problem-solving

Collaboration

Education

FE certification

PE license in mechanical engineering preferred

Tools

AutoCAD

Revit

Job description

Build Meaningful Projects. Lead Technical Excellence. Grow With Us.

Stephens Mechanical Engineering is expanding, and we're looking for an experienced Senior Mechanical Design Engineer to help lead the next chapter of our growth.

If you're passionate about advancing your career, mentoring other engineers, and working on a diverse portfolio of commercial projects, we'd love to meet you.

As a key member of our team, you'll have the opportunity to lead design efforts on everything from healthcare facilities and military installations to airports, universities, resorts, and industrial plants—all while working in a collaborative environment that values expertise, professional development, and work-life balance.

Why Join Stephens Mechanical Engineering?

Stephens Mechanical Engineering is a family-owned firm with a team of experienced engineers and designers with nearly 100 years of combined engineering experience. We've built our reputation on technical excellence, strong client relationships, and investing in our people.

What sets us apart:

• Annual performance bonuses
• Half-day Fridays
• Company vehicle for project site visits
• Company laptop for office and home use
• Paid training, certifications, and professional development opportunities
• Networking and industry event participation
• Hybrid schedule possibilities available based on experience and project responsibilities
• Relaxed, team-oriented workplace culture
• Company outings, trips, and team events
• Long-term career growth opportunities within a growing firm with clear paths toward increased leadership responsibilities and project management
• Enjoy Gulf Coast living with affordable housing, outdoor recreation, boating, fishing, and a lower cost of living than many major metropolitan areas.

Why Engineers Choose Stephens Mechanical

• Direct access to company leadership
• Diverse project portfolio instead of repetitive project types
• Opportunity to make a visible impact on project success
• Less bureaucracy and more autonomy
• Support for professional growth and licensure

Salary/Benefits

• $90,000-$135,000+ depending on experience and licensure
• Health, dental and vision insurance
• Generous paid time off that increases with company tenure

What You’ll Do

• Lead HVAC and plumbing design for commercial building projects
• Develop construction documents and technical specifications
• Coordinate with architects, contractors, owners, and engineering teams
• Provide technical guidance and mentorship to junior staff
• Participate in project planning, design reviews, and quality control
• Support commissioning and project execution efforts when needed
• Help drive innovation and continuous improvement within the firm
• Take ownership of projects from concept through construction while working directly with clients and project teams

Project Types

You’ll work on a wide variety of projects, including:

• Schools and university facilities
• Military installations
• Hospitals, surgery centers, MRI suites, and clean rooms
• Industrial and manufacturing facilities
• Airports
• Hotels, resorts, and casinos
• Commercial office buildings
• Restaurants
• Police and fire stations
• Automotive dealerships and service facilities
• LEED-certified and sustainable design projects

What We’re Looking For:

Required Qualifications

• FE certification
• Proven experience designing HVAC and plumbing systems for commercial buildings
• Strong understanding of VRF, hydronic, and DX HVAC systems
• Proficiency in AutoCAD (5+ years)
• Professional communication and collaboration skills
• Ability to pass a military background check and drug screening
• Valid driver's license, reliable transportation, and insurance

Preferred Qualifications

• PE license in mechanical engineering preferred
• Revit experience (5+ years)
• Previous leadership, mentoring, or staff development experience
• Commissioning experience

The Right Candidate

You’ll thrive in this role if you:

• Enjoy solving complex engineering challenges
• Take pride in producing high-quality designs
• Like mentoring and developing others
• Communicate effectively with clients and project teams
• Want to contribute to a growing company where your expertise is valued

Ready to Join Us?

If you're looking for an opportunity to work on exciting projects, expand your leadership responsibilities, and build a long-term career with a respected engineering firm, we are looking to add the right engineer to our team in the coming months and would like to hear from you.

Apply today and help shape the future of Stephens Mechanical Engineering.