WestLAND's Group Who We Are Hero for Desktop showing owners Matt and Glenn

Who We Are

Matthew H. Okubo, PLS | President/Principal

Glenn M. Chung, PE, QSD/P | President/Principal

Co-owners Matthew Okubo and Glenn Chung are building on WLG’s industry reputation, and evolving the company into a well-respected, minority-owned business enterprise (MBE), with technical capabilities that surpass the competition. Their 50+ years of combined leadership experience, together with an uncompromising commitment to superior client service, ensure that WLG’s legacy lives on.

Meet Our Team


Matthew and Glenn’s personal style and vision for the  company have attracted a loyal team of professionals, who consistently blend insight with technological innovation to help clients efficiently manage complex projects and have lasting impacts on their community.

Charles Pluta Headshot
Charles (Doug) Pluta
VP, Geospatial Services | PLS

Doug has 20 years of experience serving the engineering needs of public utility and municipal agencies in California. He manages complex electrical and railroad projects. He also prepares field survey and mapping plans and oversees QA/QC.

Loye Peternell Headshot
Loye Peternell
VP, Finance | BS, Business Administration

Loye joined WLG after holding senior leadership positions at firms in the engineering, environmental, architecture and construction industries. Her financial acumen is second to none.

Ben Macaluso Headshot
Ben Macaluso
VP, Business Development

Ben has 25 years of engineering consulting, entitlement and land development experience. His areas of expertise include all facets of due
diligence, land planning, permitting, project management, bid
documentation and construction support.

Jesus Villegas
VP, GIS/Closeout | MS, Geospatial Technologies

Jesus leads and develops a team which supports all of WLG’s digital mapping efforts. He is the firm’s resident expert on essential engineering platforms such as ArcGIS, AutoCAD and AVEVA, among others.

Matt Kunkle Headshot
Matt Kunkle
VP, Land Development/Public Works | BS, Civil Engineering

Matt has over 20 years’ experience in development engineering and management for industrial, commercial, and retail projects. He supervises WLG’s Land Development Department and strategic growth plan.

Aaron Havens Headshot
Aaron Havens
Director, Geospatial Services | PLS

Aaron has 20 years’ experience as a Project Manager and land surveyor in transportation design, engineering and construction management. When he’s not performing boundary analysis and mapping, he is WLG’s liaison with clients, project superintendents and engineering staff.

Duane Balderston Headshot
Duane Balderston
Director of Construction

Duane’s 30+ years of field experience equip him to liaison with clients, survey teams and engineering staff on construction projects. Duane is an expert in GPS data collection/post processing, provides QA/QC oversight and prepares survey calculations and outgoing packages for field crews.

Renato Villareal Headshot
Renato Villareal
Director, Pipeline Engineering | BS, Chemical Engineering

Renato has over 38 years of project management, process engineering and estimating experience in the power generation, oil and gas industries. His areas of expertise include pipelines and compressor stations, refineries and petrochemical plants, tank farms and loading facilities.

Siara MacKinney
Director, Land Development | PE | MS, Structural Engineering. BS, Civil Engineering

Siara has over 10 years of experience providing engineering and oversight for industrial and retail projects. As Director of Land Development, she oversees and mentors department managers and technical staff, provides QA/QC, and acts as a liaison on the client’s behalf.

Glenn C Headshot
Glenn C.

Vestibulum elit nulla, blandit ac vestibulum in, tempor ut eros. Nulla facilisi. In consequat purus a elit facilisis eleifend. Maecenas id sapien felis. Phasellus ultrices nulla at neque varius.

Matt O Headshot
Matt O.

Vestibulum elit nulla, blandit ac vestibulum in, tempor ut eros. Nulla facilisi. In consequat purus a elit facilisis eleifend. Maecenas id sapien felis. Phasellus ultrices nulla at neque varius.

Siara M Headshot
Siara M.

Vestibulum elit nulla, blandit ac vestibulum in, tempor ut eros. Nulla facilisi. In consequat purus a elit facilisis eleifend. Maecenas id sapien felis. Phasellus ultrices nulla at neque varius.

Join Our Roster

We are looking for self-starters: Project Managers who thrive on responsibility… seasoned PE’s seeking new challenges and professional growth…entry level engineers looking for a career that will take them farther…faster. WLG is growing; come grow with us!

WestLAND's Group Join Our Roster Image - Showing WestLAND Groups' employees in front of a laptop and plans.

Our Work Culture

WestLAND's Group Our Work Culture Image - Showing WestLAND Group's employees in their desks.

When you work at WLG you’re part of a family – one that values each person’s contribution. We offer competitive pay and perks, fast career growth and encourage a healthy work/life balance.

Giving Back

Beyond our own business, we are deeply involved in our local community to help people in need, and we volunteer to support those who will one day make a difference in our profession.

Industry Advisors and Cal Poly Geomatics Conference

American Society of Civil Engineers | California State Polytechnic University Pomona

We mentor Cal Poly Pomona engineering students as Industry Advisors during their year-long, senior projects. We also sponsor geomatics conferences, national competitions for young engineers and offer student internship opportunities to further educational experience.

WestLAND's Group Leukemia and Lymphoma Society Image

Meghan’s Ride/Leukemia and Lymphoma Society

SoCalGas | Ridgecrest, CA

WLG employees have long supported childhood cancer research through the annual Meghan Ride fundraiser. The event, which honors the memory of a SoCalGas team member’s daughter, serves as an inspiration to hundreds of participants and sponsors.

WestLAND's Group United Way Programs Image

United Way Programs

United Way | Inland Empire

We are also committed to helping underprivileged children succeed in school. WLG employees volunteer to deliver essential school supplies to thousands of disadvantaged students through the School Tools Program, and donate backpacks of food to more than 1,800 homeless and hungry children through the Kids Pack Program.