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Location
Remote (United States)
Seniority
Principal · 7+ years exp
Visa
H-1B filings in 12 months: 1 · green card filings: 1
Employment
Full-Time

Confirmed on the employer's own hiring board on Nov 8, 2026. First seen by Alion on Nov 6, 2026. Parsons scores B on the Alion truth index.

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Parsons Corporation is an American technology and engineering company headquartered in Chantilly, Virginia, that serves defense, intelligence and critical infrastructure markets. Founded in 1944 by Ralph M. Parsons and listed on the New York Stock Exchange, it provides cybersecurity, missile defense and space ground systems, geospatial intelligence, and the design and program management of roads, bridges, rail, airports and water systems. It has a large presence in the Middle East, where it hires construction project managers, utilities and structural engineers and quantity surveyors in Riyadh, Abu Dhabi, Doha and Dubai.
In a world of possibilities, pursue one with endless opportunities. Imagine Next!At Parsons, you can imagine a career where you thrive, work with exceptional people, and be yourself. Guided by our leadership vision of valuing people, embracing agility, and fostering growth, we cultivate an innovative culture that empowers you to achieve your full potential. Unleash your talent and redefine what’s possible.

Job Description:

Principal Process Engineer - Wastewater Systems - Los Angeles, CA

OPPORTUNITY:

The Wastewater Principal Process Engineer provides technical leadership and project management accountability for process engineering in the delivery of capital projects and engineering services for wastewater treatment facilities.

RESPONSIBILITIES:

  • The qualified candidate will work effectively on water and wastewater engineering capital project teams, as well as other project related cross-functional teams with representatives from divisions throughout the organization.
  • Primary responsibility will be providing process engineering services on client with projects mainly in Southern California but may involve travel to other parts of the State as well.
  • Primary responsibility will be providing process engineering services on client with projects in mainly in Southern California but may involve travel to other parts of California as well
  • Experience in the planning and execution of projects: including project approach and resource needs, options analysis, process and equipment design, engineering document development, and system ownership through the project delivery phases of plan, design, procure, construct, and commissioning
  • Areas of expertise could include process experience for complex capital projects within the water and wastewater treatment, and water reuse, area including conventional wastewater treatment processes, membrane bioreactors (MBR), reverse osmosis desalination and brackish water treatment, UV, Ozone and other advanced water and wastewater treatment processes.
  • The senior project/process engineer is expected to be an effective communicator of ideas, project goals and results. With minimal supervision, is expected to make presentations and updates to senior management and in broader forums both internal and external to Parsons.
  • Contributions are integral to the success of projects and the achievement of both technical and organizational objectives. Strong technical leadership, collaboration, and sound business value based prioritization and problem solving skills.
  • Travel may be required to meet business needs.

The successful candidate will also provide additional design expertise for conventional and advanced wastewater treatment systems, including membrane, biosolids, odor control, pumping, blower and various systems.

REQUIREMENTS:

  • B.S. in Civil /Environmental or Chemical / Engineering or a related Degree with 7 + years or more in the water and wastewater industry of which involved process design, process performance analysis, or process engineering services for projects.
  • Experience with municipal wastewater systems is essential
  • Professional Engineer (PE) registration is desirable, but not required
  • Potential to perform in a lead capacity, excellent written and oral communications skills, and a familiarity with state-of-the art industry practices and regulations.
  • Must also possess a solid knowledge of process technology

Security Clearance Requirement:

NoneThis position is part of our Critical Infrastructure team.For more than 80 years, our experts have designed and delivered the critical infrastructure that connects and protects communities around the world. We work in collaborative teams, both within the company and with our partners and customers, to plan, design, build, and modernize infrastructure. We take special pride in projects and solutions that improve communities as well as people’s quality of life by promoting economic growth, enhancing mobility, and increasing sustainability and resiliency. Powered by our people, we provide the imagination necessary to support our customers’ visions-and to help them see what's next!Salary Range: $103,500.00 - $181,100.00We value our employees and want our employees to take care of their overall wellbeing, which is why we offer best-in-class benefits such as medical, dental, vision, paid time off, Employee Stock Ownership Plan (ESOP), 401(k), life insurance, flexible work schedules, and holidays to fit your busy lifestyle!This position will be posted for a minimum of 3 days and will continue to be posted for an average of 30 days until a qualified applicant is selected or the position has been cancelled.Parsons is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, veteran status or any other protected status.We truly invest and care about our employee’s wellbeing and provide endless growth opportunities as the sky is the limit, so aim for the stars! Imagine next and join the Parsons quest-APPLY TODAY!

Parsons is aware of fraudulent recruitment practices. To learn more about recruitment fraud and how to report it, please refer to https://www.parsons.com/fraudulent-recruitment/.

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