What are the responsibilities and job description for the Plumbing Engineer position at Nenni and Associates?
Overview:
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.
What You’ll Do:
As a Plumbing Engineer, you’ll bring technical expertise and creative problem-solving to projects that make a real impact. You will:
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Collaborate directly with customers to develop designs, calculate system requirements, and select equipment tailored to project needs
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Take ownership as lead Engineer on assigned projects, driving designs from concept through construction
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Design plumbing systems including domestic water, sanitary sewer, storm drainage, compressed air, and natural gas
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Perform hydraulic calculations (pressure loss, flow sizing, pump selection) to ensure system efficiency
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Ensure all designs meet applicable codes and standards (UPC, CPC, NFPA, ADA, and local requirements)
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Coordinate plumbing designs with mechanical, electrical, structural, and architectural teams to deliver seamless, constructible solutions
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Prepare specifications, equipment schedules, and technical documentation
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Conduct site surveys and develop accurate as-built documentation
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Support sustainability initiatives with water conservation and energy-efficient design strategies
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Mentor junior engineers and provide technical support for fabrication and field operations
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Participate in jobsite meetings and client presentations, building trusted relationships
What We’re Looking For:
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4 years of plumbing design experience (commercial or industrial projects)
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Bachelor of Science in Mechanical Engineering, Plumbing Engineering, or related discipline
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Strong knowledge of plumbing codes, standards, and best practices (UPC, CPC, NFPA, ASPE guidelines, ADA)
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Experience preparing plumbing drawings, specifications, and hydraulic calculations
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Familiarity with system types including domestic water, sanitary, storm, lab/medical gases, and specialty piping
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Proven ability to manage projects, lead teams, and deliver quality work on time
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Proficiency with AutoCAD and REVIT; BIM coordination experience preferred
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Excellent communication, problem-solving, and client-facing skills
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EIT or PE license (CA) preferred, or the ability to obtain
Why Join:
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Competitive compensation package with growth potential
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Comprehensive healthcare and retirement benefits
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Paid vacation, sick time, and holidays
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Relocation assistance available for the right candidate
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Be part of a team that values innovation, collaboration, and technical excellence
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Opportunity to work on high-profile, diverse projects that challenge and develop your skills