Water/Wastewater Process Mechanical Engineer

Liberty Personnel Services, Inc.; Fairfax (VA); On-site; USD 75,000 - 95,000; Full time

Job summary

Liberty Personnel Services, Inc. is seeking a Water/Wastewater Process Mechanical Engineer in Fairfax, Virginia. This role involves the planning, design, and construction administration of municipal water and wastewater treatment facilities. The candidate should have a Bachelor's degree in Mechanical, Civil, or Chemical Engineering and 5–10 years of experience in process piping and mechanical systems design. Candidates should be proficient in AutoCAD and have excellent communication skills. The firm promotes high-quality engineering solutions across projects.

Qualifications

• 5–10 years of relevant experience in evaluating and designing process piping and process mechanical systems.
• Strong understanding of mechanical systems, fluid mechanics, and treatment processes.
• Excellent written and verbal communication skills.

Responsibilities

• Assist in the planning, design, and analysis of water and wastewater treatment facility infrastructure.
• Develop technical specifications and cost estimates for treatment facilities.
• Provide construction administration services, including shop drawing review.

Skills

Mechanical systems understanding

Fluid mechanics

Water/Wastewater treatment knowledge

Communication skills

Organizational skills

Education

Bachelor of Science in Mechanical, Civil, or Chemical Engineering

Tools

AutoCAD

Microsoft Office

Revit or other 3D modeling software

Job description

Water/Wastewater Process Mechanical Engineer

My client is a top notch national Civil Engineering firm. They are looking for a Mechanical Process Engineer with Water/ Wastewater Engineering skills. The Water/Wastewater Process Mechanical Engineer will be responsible for the evaluation, planning, design, and construction administration of municipal water and wastewater treatment facilities & processes, distribution and collection systems, chemical storage & feed systems, and process mechanical, piping and pumping systems. The ideal candidate will bring strong technical expertise, a collaborative mindset, and a commitment to delivering high-quality engineering solutions.

Responsibilities

• Assist in the planning, design, and analysis of water and wastewater treatment facility infrastructure and associated process mechanical systems
• Develop plans, technical specifications, and cost estimates for pumping stations, treatment facilities, and related infrastructure
• Perform hydraulic analyses, equipment selection, and system sizing
• Support project development activities including permitting and coordination with regulatory agencies
• Provide construction administration services, including shop drawing review, field observations, and coordination with contractors
• Collaborate with multidisciplinary teams to deliver projects on schedule and within budget

Required Qualifications

• Bachelor of Science in Mechanical, Civil, or Chemical Engineering from an ABET-accredited program
• 5–10 years of relevant experience in evaluating and designing process piping and process mechanical systems
• Strong understanding of mechanical systems, fluid mechanics, and treatment processes
• Proficiency in AutoCAD and Microsoft Office; familiarity with Revit or other 3D modeling software is a plus
• Excellent written and verbal communication skills
• Strong organizational skills and attention to detail