Mechanical Engineer (CONTINGENT)

About Stell:

Stell is a seasoned veteran

• and woman-owned small business providing expertise and innovation across the resilience, environmental, restoration, and compliance service sectors.

Stell delivers innovative engineering and sustainability solutions for federal agencies. Position Overview Stell is seeking a seasoned Mid-Level Mechanical Engineer to support NASA design projects, including facility upgrades, infrastructure improvements, and mission-critical system modifications. This role requires an engineer who can step into active design efforts and execute independently, contributing to 30/60/90/100% design deliverables, resolving technical challenges, and coordinating directly with multidisciplinary teams and clients. The ideal candidate is a self-directed, design-focused engineer with strong experience in HVAC systems, mechanical infrastructure, and federal design standards, capable of delivering high-quality work with minimal oversight. Key Responsibilities

• Support mechanical design development for NASA facility and infrastructure projects
• Contribute to 30%, 60%, 90%, and final design deliverables
• Perform HVAC load calculations, equipment sizing, and system selection
• Develop mechanical plans, specifications, and design narratives
• Evaluate and design central plant systems, air distribution systems, and mechanical upgrades
• Coordinate mechanical scope with electrical, structural, and controls disciplines
• Support temporary system designs (e.g., temporary cooling, ventilation, or system tie-ins during construction)
• Participate in design reviews, client meetings, and technical coordination sessions
• Conduct field/site investigations to verify existing conditions and inform design
• Review submittals, RFIs, and contractor questions during design phases
• Ensure compliance with NASA standards, UFCs, ASHRAE, and applicable codes
• Support QA/QC reviews to ensure design quality and consistency Qualifications & Experience
• U.S. Citizenship (Required)
• Bachelor's degree in Mechanical Engineering
• 5-10 years of mechanical engineering design experience
• Demonstrated experience supporting federal design projects (NASA, DoD, USACE, or similar)
• Strong background in HVAC system design and building mechanical systems
• Experience with design deliverables at multiple stages (30-100%)
• Proficiency with Excel and MS Project
• Experience reviewing and coordinating RFIs, submittals, and design comments
• Ability to work independently with minimal supervision; EIT required; PE preferred but not required

Benefits:

• Competitive pay, commensurate with experience
• 100% employer-paid medical premiums for employees
• Dental, vision, and supplemental benefits
• Life and disability insurance
• 401(k) with matching and financial wellness programs
• Generous paid time off and holidays
• Tuition reimbursement and professional development opportunities

Pay:

$100,000.00

• $125,000.

00 per year

Work Location:

Hybrid remote in California City, CA 93505 Mechanical Engineer (CONTINGENT) California City, CA 93505 Hybrid work $100,000

• $125,000 a year
• Full-time $100,000
• $125,000 a year

• Full-time About Stell:

  Stell is a seasoned veteran
• and woman-owned small business providing expertise and innovation across the resilience, environmental, restoration, and compliance service sectors.

Stell delivers innovative engineering and sustainability solutions for federal agencies. Position Overview Stell is seeking a seasoned Mid-Level Mechanical Engineer to support NASA design projects, including facility upgrades, infrastructure improvements, and mission-critical system modifications. This role requires an engineer who can step into active design efforts and execute independently, contributing to 30/60/90/100% design deliverables, resolving technical challenges, and coordinating directly with multidisciplinary teams and clients. The ideal candidate is a self-directed, design-focused engineer with strong experience in HVAC systems, mechanical infrastructure, and federal design standards, capable of delivering high-quality work with minimal oversight. Key Responsibilities

• Support mechanical design development for NASA facility and infrastructure projects
• Contribute to 30%, 60%, 90%, and final design deliverables
• Perform HVAC load calculations, equipment sizing, and system selection
• Develop mechanical plans, specifications, and design narratives
• Evaluate and design central plant systems, air distribution systems, and mechanical upgrades
• Coordinate mechanical scope with electrical, structural, and controls disciplines
• Support temporary system designs (e.g., temporary cooling, ventilation, or system tie-ins during construction)
• Participate in design reviews, client meetings, and technical coordination sessions
• Conduct field/site investigations to verify existing conditions and inform design
• Review submittals, RFIs, and contractor questions during design phases
• Ensure compliance with NASA standards, UFCs, ASHRAE, and applicable codes
• Support QA/QC reviews to ensure design quality and consistency Qualifications & Experience
• U.S. Citizenship (Required)
• Bachelor's degree in Mechanical Engineering
• 5-10 years of mechanical engineering design experience
• Demonstrated experience supporting federal design projects (NASA, DoD, USACE, or similar)
• Strong background in HVAC system design and building mechanical systems
• Experience with design deliverables at multiple stages (30-100%)
• Proficiency with Excel and MS Project
• Experience reviewing and coordinating RFIs, submittals, and design comments
• Ability to work independently with minimal supervision; EIT required; PE preferred but not required

Benefits:

• Competitive pay, commensurate with experience
• 100% employer-paid medical premiums for employees
• Dental, vision, and supplemental benefits
• Life and disability insurance
• 401(k) with matching and financial wellness programs
• Generous paid time off and holidays
• Tuition reimbursement and professional development opportunities

Pay:

$100,000.00

• $125,000.

00 per year

Work Location:

Hybrid remote in California City, CA 93505