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Plumber Assistant Jobs in Renton, WA (NOW HIRING)

Perform professional plumbing engineering work and conduct research and inspections of proposed and ... assist with laying out installation of equipment, calculating costs and quantities of material ...

Lead Plumbing Engineering - Buildings

Seattle, WA · On-site

$116K - $153K/yr

Perform professional plumbing engineering work and conduct research and inspections of proposed and ... assist with laying out installation of equipment, calculating costs and quantities of material ...

Senior Plumbing Engineer

Lynnwood, WA · On-site

$115K - $158K/yr

Deliver projects across multiple delivery models, including design/bid/build, design assist, design ... Thorough understanding of plumbing engineering systems. * Expertise in an area of concentration ...

Senior Living Maintenance Assistant Are you passionate about working with seniors? Are you ... Responsible for all in-house plumbing, e.g. sinks, toilets and bathtubs. * Responsible for minor ...

Senior Plumbing Engineer

Seattle, WA · On-site

$115K - $158K/yr

Deliver projects across multiple delivery models, including design/bid/build, design assist, design ... Thorough understanding of plumbing engineering systems. * Expertise in an area of concentration ...

Senior Plumbing Engineer

Seattle, WA · On-site

$126K - $189K/yr

Deliver projects across multiple delivery models, including design/bid/build, design assist, design ... Thorough understanding of plumbing engineering systems. * Expertise in an area of concentration ...

Maintenance Assistant

Seattle, WA · On-site

$28.84 - $38.14/hr

Senior Living Maintenance Assistant Are you passionate about working with seniors? Are you ... Responsible for all in-house plumbing, e.g. sinks, toilets and bathtubs. * Responsible for minor ...

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Maintenance Assistant

Seattle, WA · On-site

$28.84 - $38.14/hr

) Senior Living Maintenance Assistant Are you passionate about working with seniors? Are you ... Responsible for all in-house plumbing, e.g. sinks, toilets and bathtubs. * Responsible for minor ...

Maintenance Asst

Puyallup, WA · On-site

$17.50 - $22/hr

You will assist with the operation, repair, and maintenance of boilers, compressors, generators, HVAC systems, electrical and plumbing systems, and other equipment in accordance with federal, state ...

Assistant Engineer

Bellevue, WA · On-site

$25 - $30/hr

The Assistant Engineer is responsible for completing work orders, grounds maintenance, painting, caulking, HVAC, plumbing, drywall, electrical and completing maintenance on buildings as needed. Under ...

Assistant Engineer

Bellevue, WA · On-site

$25 - $30/hr

The Assistant Engineer is responsible for completing work orders, grounds maintenance, painting, caulking, HVAC, plumbing, drywall, electrical and completing maintenance on buildings as needed. Under ...

Assistant Chief Engineer ID: 1220 Location: Auburn, WA Department: Facilities Starting Rate: $33.96 ... Perform assignments in plumbing, carpentry, minor electrical, painting, repair and maintenance of ...

Maintenance Assistant

Tacoma, WA · On-site

$21.31 - $24.48/hr

) Maintenance Assistant Job Summary Heartwood Extended Health Care in Tacoma, Washington is seeking a ... plumbing, and or carpentry. Knowledge, Skills and Abilities: * Must have working knowledge of all ...

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Plumber Assistant information

See Renton, WA salary details

$13

$21

$32

How much do plumber assistant jobs pay per hour?

As of Jul 4, 2026, the average hourly pay for plumber assistant in Renton, WA is $21.69, according to ZipRecruiter salary data. Most workers in this role earn between $17.84 and $24.09 per hour, depending on experience, location, and employer.

Is 30 too late to become a plumber?

Plumber assistants can start at age 30 or older, as the role often requires on-the-job training and basic skills. Many people enter the trade later in life and pursue certifications or apprenticeships to develop necessary plumbing skills. Age is generally not a barrier to beginning a plumbing career.

What are plumber assistants?

Plumber assistants, also known as plumber helpers, support licensed plumbers by performing a variety of tasks on job sites. These duties can include carrying tools, preparing materials, cleaning work areas, and assisting with the installation and repair of plumbing systems. They often help with measuring, cutting, and assembling pipes, as well as troubleshooting basic plumbing issues under supervision. Plumber assistants play an essential role in ensuring plumbing projects run smoothly and efficiently, and the position is often a stepping stone to becoming a licensed plumber.

What does a plumber assistant do?

A plumber assistant supports licensed plumbers by preparing work areas, handing tools, and assisting with installations and repairs of plumbing systems. They may also help with measuring, cleaning, and maintaining equipment, often working under supervision in residential or commercial settings. Basic knowledge of plumbing tools and safety procedures is beneficial for the role.

How much an hour should a plumber charge?

A plumber assistant typically charges between $15 and $25 per hour, depending on experience, location, and the complexity of the job. Rates can vary based on whether the work is performed independently or through a company, and additional costs may include materials and emergency service fees.

What is the difference between Plumber Assistant vs Plumber?

AspectPlumber AssistantPlumber
Required CredentialsHigh school diploma or equivalent; on-the-job trainingHigh school diploma or equivalent; apprenticeship or technical training
Work EnvironmentAssist in installation and repair under supervision, often in residential or commercial settingsPerform plumbing installations, repairs, and maintenance independently or with team
Employer & Industry UsageUsed by plumbing companies for entry-level support rolesLicensed professionals performing full plumbing services

The main difference between a Plumber Assistant and a Plumber is experience and responsibility. A Plumber Assistant supports plumbing work under supervision, often with minimal certifications, while a Plumber performs independent work with required licenses and more advanced skills.

What does a plumber assistant make?

A plumber assistant typically earns between $12 and $20 per hour, depending on experience, location, and employer. They often work under the supervision of licensed plumbers and may assist with tasks such as pipe installation, repairs, and maintenance, using tools like wrenches and pipe cutters.

What are some typical daily responsibilities of a Plumber Assistant, and how do they support licensed plumbers on the job?

As a Plumber Assistant, your daily tasks usually include preparing and cleaning job sites, transporting tools and materials, and assisting with installing or repairing pipes, fixtures, and other plumbing systems under the guidance of a licensed plumber. You may also be expected to handle basic measurements, cut and prep piping, and help troubleshoot minor issues. By efficiently supporting the lead plumber, you not only ensure projects run smoothly but also gain hands-on experience that can be valuable for career advancement in the plumbing trade.
What are the most commonly searched types of Plumber jobs in Renton, WA? The most popular types of Plumber jobs in Renton, WA are:
What are popular job titles related to Plumber Assistant jobs in Renton, WA? For Plumber Assistant jobs in Renton, WA, the most frequently searched job titles are:
What job categories do people searching Plumber Assistant jobs in Renton, WA look for? The top searched job categories for Plumber Assistant jobs in Renton, WA are:
What cities near Renton, WA are hiring for Plumber Assistant jobs? Cities near Renton, WA with the most Plumber Assistant job openings:
Infographic showing various Plumber Assistant job openings in Renton, WA as of June 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $45,122 per year, or $21.7 per hour.
Lead Plumbing Engineering - Buildings

Lead Plumbing Engineering - Buildings

WSP

Seattle, WA

$116K - $153K/yr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Posted 11 days ago


WSP rating

8.5

Company rating: 8.5 out of 10

Based on 67 frontline employees who took The Breakroom Quiz

15th of 58 rated business consultants


Job description

This Opportunity

Be involved in projects with our Property & Buildings Team and be a part of a growing organization that meets our client's objectives and solves their challenges.
WSP is currently initiating a search for a full-time Senior Plumbing Engineer for our Seattle, WA office. This position is best suited for an engineer who is seeking an opportunity to work within a team-focused local office, for a large world-wide engineering firm. Career development, mentoring and employee satisfaction is key within our local MEP group and the firm.

Your Impact

  • Determine well-defined methods for collecting, compiling, and analyzing data from the physical work site, surveys, blueprints, schematics, data, technical drawings, computer-generated reports, and other matrices for project development, design, and construction.   
  • Perform professional plumbing engineering work and conduct research and inspections of proposed and existing site conditions, equipment, resources, building, infrastructure, and usage; and install plumbing, fire protection and suppression, and fluid flow systems to conform with applicable rules, standards, and construction or operating permits.
  • Develop construction and installation plans, specifications, and cost estimates; preparing construction safety and phasing plans, and updating infrastructure layout plans that require coordination with owners, architects, other disciplines, sub-consultants, and clients.
  • Incorporate advanced technology, modeling techniques, concept development, design requirements, load calculations, and operating strategies to account for the proper installation and functioning of equipment and systems according to specifications; implementing future-ready solutions with plumbing engineering design standards.
  • Work as an individual or as part of a cross-functional team of engineers, planners, and scientific professionals to execute project work on multiple concurrent projects, assist with laying out installation of equipment, calculating costs and quantities of material/equipment/labor, and ensuring project work conforms with specifications, permit applications, schematics, compliance documentation, and regulatory and technical analysis memos.
  • Prepare data and visualizations such as tables, charts, accurate reports, sketches, calculations, technical drawings, spreadsheets, and illustrations for the interpretation or presentation of data, findings, or analyses.
  • Maintain quality control standards and procedures for accurate and precise measurements, statistical analysis, and reporting.
  • Assist with development and scoping of medium-sized projects.
  • Provide guidance and training to entry-level engineers.
  • Prepare technical reports and presentations that explain research, findings, and recommendations to improve, prevent, control, restore, or address design and/or construction issues or opportunities.
  • Assist in the analysis, evaluation, and interpretation of data obtained during site investigations, offering input with developing action plans for moderate- to high-level risk installation, equipment and system operations, and/or mitigation activities.
  • Prepare and implement site Health and Safety Plans (HASPs).
  • Comply with regulatory requirements pertaining to the data integrity, documentation, procedures, training, monitoring systems, and record compliance and retention.
  • Interact with regulatory agencies, subcontractors, architects, and clients in a confident and professional manner.
  • Remain current in latest plumbing engineering techniques and practices.
  • Work collaboratively with other engineers, architects, and building and infrastructure authorities on Federal, State, regional, and locally funded improvement and development projects.
  • Exercise responsible and ethical decision-making regarding company funds, resources and conduct, and adhere to WSP's Code of Conduct and related policies and procedures.
  • Perform additional responsibilities as required by business needs.

Who You Are

Required Qualifications

  • Bachelor's Degree in Plumbing or Mechanical Engineering, or closely related discipline.
  • 7+ years of relevant post education experience in engineering and prior plumbing and mechanical design experience.
  • Proficient knowledge of plumbing and mechanical engineering principles, practices, process, design/build, and the application to project work-related issues.
  • Experience with building and infrastructure planning, design, and construction management; including active involvement in a variety of rehabilitation and new design projects.
  • Working knowledge of relevant plumbing and mechanical system and construction laws, codes, regulations, compliance practices, and record-keeping requirements.
  • Ability to make technical computations and calculations involving the application of engineering principles, understanding plans and specifications, and making factual comparisons to the appropriate regulations.
  • Project management experience with small to mid-level projects including tracking hours and expenses for project work.
  • Ability to plan and conduct inspections and investigations on various aspects of the construction and design of facilities, structures and systems, applying applicable regulations and policies.
  • Effective interpersonal and communication skills when interacting with others, expressing ideas effectively and professionally to an engineering and non-engineering audience.
  • Highly capable self-leadership with attention to detail, multi-tasking, and prioritization of responsibilities in a dynamic work environment.
  • Ability to work independently and provide guidance and leadership to junior team or project members, with strict adherence to QA/QC.
  • Proficiency with technical writing, office automation, discipline-specific design software (i.e., AutoCAD, Revit), technology, math principles, predictive models, spreadsheets, and tools.
  • Developed critical thinking and problem-solving skills required to apply technical knowledge to reach conclusions from testing results, data collation, load calculations, statistical analysis and arriving at the most effective, economical, and logical solution.
  • Ability to assertively direct others in the field such as subcontractors and others to consistently complete tasks safely and efficiently.
  • Proven track record of upholding workplace safety and ability to abide by WSP's health, safety and drug/alcohol and harassment policies.
  • Ability to work schedules conducive to project-specific requirements that may extend beyond the typical workweek.
  • Occasional travel may be required depending on project-specific requirements.

Preferred Qualifications 

  • Professional Engineering License preferred
  • Plumbing Design (CPD) Certification
  • Experience managing small to mid-size projects.
  • LEED AP Certification
  • Lab and Medical Gas design experience

WSP Benefits:  

WSP provides a comprehensive suite of benefits focused on a providing health and financial stability throughout the employee's career. These benefits include coverage related to medical, dental, vision, disability, and life; retirement savings; paid sick leave; paid vacation (or other personal time); paid parental leave; and paid time off for purposes of bereavement, voting, and/or attendance at naturalization proceedings.  

Compensation: 

Expected Salary (all locations): $103,300- $182,000

WSP USA is providing the compensation range that the company in good faith believes it might pay and offer for this position, based on the successful applicant's education, experience, knowledge, skills, abilities in addition to internal equity and specific geographic location. WSP USA reserves the right to ultimately pay more or less than the posted range and offer additional benefits and other compensation, depending on circumstances not related to an applicant's sex or other status protected by local, state, and/or federal law. 

About WSP

WSP USA is the U.S. operating company of WSP, one of the world's leading engineering and professional services firms. Dedicated to serving local communities, we are engineers, planners, technical experts, strategic advisors and construction management professionals. WSP USA designs lasting solutions in the buildings, transportation, energy, water and environment markets. With more than 15,000 employees in over 300 offices across the U.S., we partner with our clients to help communities prosper.

www.wsp.com

WSP provides a flexible and agile workplace model while meeting client needs. Employees are also afforded a comprehensive suite of benefits including medical, dental, vision, disability, life, and retirement savings focused on providing health and financial stability throughout the employee's career.

At WSP, we want to give our employees the challenges they seek to grow their careers and knowledge base. Your daily contributions to your team will be essential in meeting client objectives, goals and challenges. Are you ready to get started?

WSP USA (and all of its U.S. companies) is an Equal Opportunity Employer Race/Age/Color/Religion/Sex/Sexual Orientation/Gender Identity/National Origin/Disability or Protected Veteran Status.

The selected candidate must be authorized to work in the United States.

NOTICE TO THIRD PARTY AGENCIES:

WSP does not accept unsolicited resumes from recruiters, employment agencies, or other staffing services. Unsolicited resumes include any resume or hiring document sent to WSP in the absence of a signed Service Agreement where WSP has expressly requested recruitment/staffing services specific to the position at hand.  Any unsolicited resumes, including those submitted to hiring managers or other business leaders, will become the property of WSP and WSP will have the right to hire that candidate without reservation - no fee or other compensation will be owed or paid to the recruiter, employment agency, or other staffing service. 


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