Loureiro Engineering Associates, Inc.

Senior Engineer - Wastewater

Facility Engineering - Plainville, CT - Full Time

Loureiro Engineering Associates is seeking a Senior Engineer to join our Industrial Wastewater Treatment team within the Facility Engineering Division. This is a great opportunity for an experienced engineer who wants to lead complex projects, gain real-world design-to-build experience, and grow within a team that supports every stage of a wastewater system’s lifecycle—from concept through long-term maintenance.

At Loureiro, you won’t just work for the company—you’ll own a part of it. As a 100% employee-owned company, our Employee Stock Ownership Plan (ESOP) gives you a company-funded ownership stake that grows over time—so when we succeed, you share in the rewards.

What You’ll Do

  • Perform engineering calculations to support the design industrial wastewater treatment systems.
  • Prepare engineering drawings in electronic drafting software including AutoCAD and Revit with support from our CAD designers.
  • Select and specify industrial wastewater treatment equipment including tanks, pumps, sensing equipment.
  • Perform engineering field studies and prepare written reports for new and existing industrial and manufacturing facilities including water audits, wastewater audits, and wastewater treatability studies.
  • Collect wastewater samples for compliance determination, and for design of system expansions and upgrades.
  • Oversee wastewater treatment system construction and installation by Loureiro skilled trades staff, and Loureiro subcontractors.
  • Perform field work in support of new and existing systems including system commissioning, equipment calibration, and controls upgrades.
  • Collaborate with other focus areas within Facility Engineering Division including mechanical, electrical, and Plumbing (MEP), and energy.

Who You Are
  • A problem-solver with a passion for sustainable water treatment
  • Hands-on and eager to apply engineering concepts in real-world environments
  • Someone who values teamwork and collaboration
  • Comfortable in both office and field settings
  • Dedicated to safety, quality, and client satisfaction

What You Bring
  • Bachelor’s degree in Environmental or Chemical Engineering
  • 3–8 years of relevant experience
  • Engineer in Training (EIT) certification (preferred)
  • Industrial/manufacturing project experience is a plus
  • Proficiency with CAD tools and technical reporting
  • Ability to travel to job sites and work in varied weather and terrain
  • Physical capability to lift up to 15 lbs., operate field equipment, and work safely in compliance with PPE requirements


Physical Requirements
• Prolonged periods of standing, walking, and hiking
• Ability to lift up to 50 lbs and work in varied weather and terrains
• Manual dexterity to set up equipment and handle samples
• Must adhere to safety protocols and PPE usage


Why Loureiro?
• Employee Ownership, Real Impact: Through our ESOP, you gain a meaningful financial stake in the company’s success
• Diverse Expertise: Partner with specialists across engineering, environmental, construction, and EH&S disciplines
• Opportunity to Advance: We’re serious about your growth, offering hands-on learning, coaching, and clear career paths
• People-First Culture: You’ll be part of a respectful, team-oriented environment that values your voice
• And Of Course…Exceptional Benefits: From health coverage to financial wellness, our benefits are built to support you in and out of the workplace

We are committed to delivering high-quality engineering and construction solutions that make a lasting impact, and we take pride in fostering an empowering workplace. If you’re looking to take ownership of impactful work and grow your career in a supportive environment, we’d love to hear from you!

Loureiro Engineering Associates, Inc. (Loureiro) is an employee owned (ESOP), full-service multi-disciplinary consulting firm with operations in Connecticut, Massachusetts, Rhode Island, New Hampshire, North Carolina, and Missouri. Loureiro’ s areas of expertise include the integration of the highest quality engineering, construction, environmental health & safety, energy, and waste management services.

EEO/AAP Statement: Loureiro Engineering Associates Inc., is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, or protected veteran status.

Loureiro Engineering Associates Inc. is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability or protected veteran status.

Apply: Senior Engineer - Wastewater
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