Ground every answer in facts on this page and the original listing. We never invent Glassdoor-style reviews or salaries that are not in our data.
Be ready to walk through a water or wastewater project: your role, constraints, and how you resolved design or field issues. Ask how Trilon staffs PE I vs II work and local MO client workflows.
Strong fit if you want hands-on civil/environmental project engineering in water infrastructure inside a growing multi-firm platform, based in St. Louis rather than remote.
As a Project Engineer I/II – Water/Wastewater at Trilon Group in St. Louis, expect design support, field coordination, and client/agency follow-ups on municipal water and sewer work—submittals, site visits, and constructability checks—not a generic desk-only schedule.
Build depth in water/wastewater hydraulics, treatment and collection basics, CAD/BIM plan production, specs and shop drawings, construction observation notes, and clear stakeholder writing. No cert list was supplied for this posting.
The listing is St. Louis, MO with remote set to no; plan on on-site or hybrid local work unless the employer states otherwise.
Public news frames Trilon as an infrastructure platform with investment backing, refinancing scale, and firm partnerships—not a single boutique shop.
No certification resources were provided for this enricher run; confirm PE track or operator licenses with the hiring team.
Website: trilongroup.com
Public cache only — not an employee review.
Trilongroup is hiring a Project Engineer I/II - Water/Wastewater in St. Louis, MO for a full-time role that blends hands-on project support with structured professional growth for engineers ready to advance. What This Role Involves This Project Engineer I/II - Water/Wastewater opportunity in St. Louis, MO places you at the heart of delivering reliable water and wastewater solutions while accelerating your career path. You will take part in Blueprint, an intensive six-month early career leadership track designed for engineers who want more than standard entry-level work. The curriculum blends practical modules on professional skills, business fundamentals, and project execution through case studies, simulations, and role-play sessions. Topics include project economics, clear communication strategies, and core leadership principles, finishing with a live capstone where you present progress and set goals for the coming year. Your Responsibilities Support engineering analyses, calculations, and design tasks for water supply, distribution, collection, and treatment systems Prepare technical drawings, reports, and project documentation in collaboration with senior staff Assist with construction oversight activities, including site observations and coordination of field efforts Engage with clients and internal teams to ensure attentive, high-quality service throughout project delivery Fully participate in all Blueprint program sessions and exercises to build business and leadership capabilities Contribute fresh ideas that help improve processes and outcomes on water and wastewater assignments What We're Looking For Early-career professionals holding or pursuing an engineering degree with interest in water/wastewater work A genuine appetite for continuous learning and making a meaningful impact on communities Strong communication skills and dedication to providing careful, personalized client attention Motivation to develop beyond technical fundamentals into project economics, leadership, and delivery skills Readiness to complete a structured six-month program that includes presentations and collaborative exercises Working at Trilongroup Trilongroup is hiring for this role and offers a supportive team environment that helps Project Engineer I/II - Water/Wastewater candidates in St. Louis, MO grow through the specialized Blueprint leadership experience and everyday collaboration. Ready to Apply? To apply, complete your application directly on this page, or you'll be redirected to the employer's application platform to finish submitting there.
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