Junior Mechanical Engineer | Building Systems

Junior Mechanical Engineer | Building Systems

$90000 - $115000 per year | San Francisco, CA | On-site | Permanent

Build your mechanical engineering experience on complex building-systems projects with an established consulting firm. Earn $90K–$115K with a performance-based bonus, employer-paid medical benefits, and company-paid professional education.

A bit about us:

We’re supporting an engineering consulting firm that provides building-systems design services across multiple engineering disciplines. Its project environment offers opportunities to contribute to practical engineering challenges alongside experienced professionals.

The firm is seeking a Junior Mechanical Engineer with 1–3 years of experience to support mechanical design work and continue developing technical skills within engineering consulting.

Why join us?

• Base salary of $90,000–$115,000.
• Performance-based year-end bonus.
• Employer-paid medical, dental, and vision insurance.
• 401(k) with an employer contribution.
• Company-paid professional education.
• Exposure to multidisciplinary building-design projects.
• Work alongside experienced engineers in an office-based environment.

Job Details

Job Details

Build your engineering career while helping shape smarter, more efficient buildings. We’re seeking a Junior Mechanical Engineer to join our engineering team in a permanent role, supporting the design and coordination of mechanical building systems from concept through construction.

You’ll work alongside experienced engineers and multidisciplinary project teams, turning technical ideas into practical solutions that improve comfort, performance, and energy efficiency. This opportunity is ideal for someone with 2+ years of relevant experience who is ready to deepen their technical expertise and take on increasing project responsibility.

Responsibilities

• Develop mechanical building systems designs under the guidance of senior engineers, with a focus on HVAC performance, reliability, and constructability.
• Create and update BIM models, Revit layouts, engineering drawings, schedules, and technical documentation throughout the project lifecycle.
• Perform engineering calculations, including heating and cooling loads, ventilation requirements, airflow, pressure drops, and preliminary equipment sizing.
• Support design coordination with architectural, structural, electrical, and other project teams to identify clashes and resolve technical interfaces.
• Assist with equipment selection, specifications, design reports, and drawing packages in line with project requirements and applicable standards.
• Participate in design reviews and coordination meetings, documenting decisions and following through on assigned actions.
• Support responses to technical queries, review contractor submittals, and assist with site observations as required.
• Check your work for accuracy, consistency, and compliance with internal quality procedures.
• Contribute ideas that improve energy efficiency, design quality, and team workflows while developing your building systems knowledge.

Qualifications

• Bachelor’s degree in Mechanical Engineering, Building Services Engineering, or a related discipline, or an equivalent recognized qualification.
• At least 2 years of relevant experience in mechanical engineering for building systems.
• Practical experience with BIM and Revit, or equivalent building design and modeling tools.
• Working knowledge of HVAC fundamentals, mechanical building systems, and engineering design principles.
• Experience producing engineering drawings, technical documentation, and engineering calculations.
• Understanding of multidisciplinary design coordination and the ability to identify and communicate design conflicts.
• Familiarity with relevant building codes, mechanical standards, and…