Trilongroup · Seattle, WA

Senior Planning Associate - Puget Sound Market Leader at Trilongroup — Seattle, WA

Full-timeSeattle, WA$120,000–$160,000/yearPosted 2026-07-17

Full job description

Alta Planning + Design is looking for an experienced Planning Associate or Senior Planning Associate to join our team in Seattle , and serve as a Puget Sound Market Leader . This is a unique opportunity for somebody passionate about sustainable transportation and positively impacting our communities; an experienced practitioner who’s ready to take the next step in their career with a rapidly growing company in the Seattle metro area. In this role, you will work on a variety of sustainable transportation projects, focused on making a positive impact on communities around the Puget Sound and the Pacific Northwest. If you are looking for a mission-focused company that is an industry leader in active transportation planning and design, TDM, analytics, multimodal safety, greenways, and sustainable mobility, apply with us today! About Alta Alta is a mission-driven company working to mitigate climate change and advance safety and social justice by shaping sustainable, people-centered communities. We bring together expertise across planning, design, engineering, education and encouragement programs, and community engagement to help communities thrive. Our work is grounded in the belief that how places are designed and experienced has a profound impact on equity, health, and opportunity—and that people should always be at the heart of those decisions. Founded in 1996, Alta was at the forefront of the active transportation movement and has spent 30 years partnering with communities to imagine a more connected, resilient, and inclusive future. Today, with more than 225 staff across the United States and beyond, we are a global leader in creating environments that support everyday life, strengthen human connection, and respond to the challenges of a changing world. As one of Alta’s oldest and most established offices, our Seattle team and an enduring commitment to helping to shape the active transportation networks of communities across the Puget Sound region, Washington State and beyond. Alta offers the opportunity to collaborate across disciplines and service areas, contribute to meaningful work at every scale, and be part of a team committed to making lasting, positive change for people and the places they call home.