Plumbing Engineer

Nenni and Associates•San Jose, CA

6d•Onsite

About The Position

Our client is a well-established, full-service design-build mechanical contractor with a reputation for delivering innovative solutions across some of the Bay Area’s most exciting and complex projects. They are seeking a Plumbing Engineer to join their growing San Jose team. This is an opportunity to play a key role in shaping projects across biotech, semiconductor, higher education, and other dynamic markets — while advancing your career in a collaborative, growth-focused environment.

Requirements

5+ years of plumbing design experience (commercial or industrial projects)
Bachelor of Science in Mechanical Engineering, Plumbing Engineering, or related discipline
Strong knowledge of plumbing codes, standards, and best practices (UPC, CPC, NFPA, ASPE guidelines, ADA)
Experience preparing plumbing drawings, specifications, and hydraulic calculations
Familiarity with system types including domestic water, sanitary, storm, lab/medical gases, and specialty piping
Proven ability to manage projects, lead teams, and deliver quality work on time
Proficiency with AutoCAD and REVIT; BIM coordination experience preferred
Excellent communication, problem-solving, and client-facing skills

Nice To Haves

EIT or PE license (CA) preferred, or the ability to obtain

Responsibilities

Collaborate directly with customers to develop designs, calculate system requirements, and select equipment tailored to project needs
Take ownership as lead Engineer on assigned projects, driving designs from concept through construction
Design plumbing systems including domestic water, sanitary sewer, storm drainage, compressed air, and natural gas
Perform hydraulic calculations (pressure loss, flow sizing, pump selection) to ensure system efficiency
Ensure all designs meet applicable codes and standards (UPC, CPC, NFPA, ADA, and local requirements)
Coordinate plumbing designs with mechanical, electrical, structural, and architectural teams to deliver seamless, constructible solutions
Prepare specifications, equipment schedules, and technical documentation
Conduct site surveys and develop accurate as-built documentation
Support sustainability initiatives with water conservation and energy-efficient design strategies
Mentor junior engineers and provide technical support for fabrication and field operations
Participate in jobsite meetings and client presentations, building trusted relationships