
At RES, we’re looking for purpose-driven individuals who are passionate about restoration and sustainability, and who want their work to make a lasting environmental impact. Our team members go above and beyond, bringing initiative, integrity, and a strong work ethic to every project. Collaboration is key—we thrive on teamwork, open communication, and diverse perspectives. In a field that constantly changes, we value those who are resilient, adaptable, and resourceful in the face of challenges. If you're intellectually curious, eager to learn, and ready to help restore ecosystems and protect natural resources, you’ll find your place here.
RES is seeking a Regulatory Specialist IV with deep environmental permitting expertise to support restoration, mitigation, and environmental project delivery in California. This role is ideal for a senior regulatory professional who understands how to navigate complex agency requirements, prepare and review high-quality permit documents, evaluate project risk, and serve as a trusted technical resource for project teams, clients, and regulatory partners.
The Regulatory Specialist IV will lead and support environmental permitting efforts across multiple project phases, from early feasibility and proposal support through project development, agency coordination, implementation, compliance, and closeout. This position requires strong technical judgment, excellent communication skills, and the ability to translate regulatory requirements into practical project strategies.
Why You’ll Love This Job
You will play a key role in advancing meaningful ecological restoration and mitigation projects across California. Your work will directly support project feasibility, regulatory approvals, compliance, and long-term project success.
You’ll collaborate with interdisciplinary teams, including scientists, engineers, project managers, client solutions professionals, and field staff, while serving as a senior regulatory resource across complex projects. This is a great opportunity for someone who enjoys solving regulatory challenges, building productive agency relationships, mentoring others, and helping shape project strategy.
Your Day-to-Day
In this role, you will:
We’d Love to Talk to You If You Have Many of the Following
What Will Make You Stand Out
You Will Thrive in This Job If You Are
Please note that the “Day in the Life” section is not intended to be an exhaustive list of job duties, but rather a representative snapshot of typical responsibilities and work experiences at RES.
RES is an Equal Opportunity Employer and a VEVRAA Federal Contractor. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by law.

As the nation’s largest nature-based solutions company, RES (Resource Environmental Solutions) is restoring a resilient earth for a modern world, project by project. RES creates durable, resilient natural infrastructure for communities through solutions for environmental mitigation, stormwater and water quality, and climate and flooding resilience.
RES has a unique operating model for delivering ecological mitigation and restoration projects based on science-led design, integrated delivery, and long-term performance. From headwaters to coastal shores, RES designs, builds, and sustains sites that preserve the environmental balance, lifting impaired ecosystems to restored health and ultimately, self-sufficiency. These projects restore sensitive wetland, prairie, and species habitats as well as floodplains, streams, river valleys, and coastal and tidal systems. The result is nature-based systems that cleanse water, shelter wildlife, buffer storms, and sequester carbon from the atmosphere.