Using Our Experience to Engineer a Better Future

More Than Half a Century of Commitment to You

RETTEW was built on the principles of investing in people, producing better solutions, and using our experience and expertise to serve you better. This dedication has allowed us to expand into numerous industries and markets. We believe in collaboration, whether that’s among our teams, within our communities, or with our clients.

Join Our Team

Join Our Team

Our collaborative teams are one of the reasons RETTEW is respected and trusted in the communities we serve. As a 100% employee-owned company, we are committed to our work and each other, all while helping our clients achieve their goals.

If you’re ready to make a difference, check out our open positions.

View Our Open Positions 

Find Your Solution with RETTEW

Consistently ranked by Engineering News-Record as a Top 500 Design Firm, RETTEW has a big-picture understanding yet retains an eye for the smallest detail of every project. You can place your full confidence in our diverse team of engineers, environmental consultants, designers, surveyors, and other skilled specialists for demanding engineering consulting projects of all sizes in any market. Partner with us for your engineering consulting needs on your next commercial project.

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RETTEW NEWS & INSIGHTS
  • RETTEW Projects Tackling Stormwater and Flooding Challenges

    July 16, 2025

    Stormwater and flooding are growing concerns for communities and developers alike. RETTEW has delivered innovative, sustainable solutions across Pennsylvania and beyond. Here are some standout projects that demonstrate how RETTEW helps clients mitigate flood risks, enhance water quality, and meet regulatory requirements. To comply with MS4 Permit requirements, Manheim Borough partnered with RETTEW to restore…

  • ASPIRE Internship Blog: Bridging the Gap from Classroom to Land Development

    July 15, 2025

    By Matt Wallence As a rising fifth year landscape architecture student at Penn State, my internship at RETTEW has been an incredible opportunity to apply the knowledge I’ve learned in the classroom and connect with real-world projects that involve actual clients. My time at RETTEW has significantly strengthened my understanding of land development and is…

  • Using Engineering Consulting to Understand Energy Regulation Standards

    July 10, 2025

    The energy industry is continuously evolving, with new policies and environmental concerns emerging daily. Keeping up with and applying these changes can be a time-consuming process. Engineering consulting firms, such as RETTEW, bridge the gap between the technical demands of energy projects and the requirements of energy regulations. Their expertise in design, analysis, project management,…