Assistant Project Manager - Civil/Site Design

At Colliers Engineering & Design, we’re not just shaping land—we’re shaping the future. As a national, multidisciplinary engineering and design powerhouse, we bring cutting-edge solutions to complex challenges across the public and private sectors. Our culture thrives on innovation, collaboration, and the drive to deliver excellence at every turn.

Colliers Engineering & Design is seeking an Assistant Project Manager to join our Civil/Site Land Development team in Phoenix, AZ. As an Assistant Project Manager on our Civil/Site Land Development team, you’ll play a key role in supporting the delivery of high-quality projects from concept through completion. Working closely with the Project Manager, you’ll help oversee both the technical and administrative aspects of project execution—ensuring that timelines, budgets, and client expectations are met. Your responsibilities will include assisting with project coordination, budgeting, scheduling, proposal preparation, and client communication, as well as guiding junior staff and contributing to the successful design and delivery of civil engineering solutions. You’ll also work directly in AutoCAD and collaborate with team members and leadership to keep projects on track and aligned with performance goals. This is a great opportunity to grow your project management skills while making a meaningful impact on projects that shape the communities around us.

This position is based in Phoenix, Arizona, with the option of office-based work in the Central Valley (E. Camelback Rd. & N 24th St.) or the West Valley (I-10 & 101).

Join our Civil/Site team and build your career alongside the best our industry has to offer. Whether supporting a large industrial complex, commercial/residential development, or planning a mixed-use establishment in a business district, joining Colliers Engineering & Design will accelerate YOUR success!

• Assist in preparing effective work plans and man-hour budgets for approval by the supervisor.
• Monitor time schedules and project capital cost budgets to satisfy the client.
• Oversee the work and productivity on assigned projects.
• Strive to achieve predetermined goals for profit, productivity targets, and schedule of deliverables.
• Participate in or hold team meetings to ensure procedures governing the review and approval of projects are followed prior to submitting completed work.
• Negotiate with clients on any scope changes relative to project budgets and schedules, subject to the supervisor's approval.
• Ensure all project work is performed and completed in accordance with QA/QC standards, systems, and procedures as designated for the project.
• Coordinate and communicate effectively with all employees involved in the project to ensure high utilization rates (e.g., Project team meetings).
• Review monthly man-hour and cost reports to ensure projects are being completed at the pre-established goal.
• Assist with mentoring junior staff to learn sound technical and business practices and enhance corporate objectives.
• Assist with the preparation for public hearings, meetings, and any other presentations related to his/her projects.
• Assist with submittals to various reviewing agencies and coordinate addressing comments with the design team.
• Works efficiently with the Billing Department to authorize and transmit bills to the client. Follows up with clients for timely payments.
• Adhere to the Health and Safety program and all applicable SOPs.
• May oversee the activities of assigned staff, including but not limited to timesheet review and approval, performance evaluation, and daily supervision.

• Bachelor’s Degree in a related field.
• 8+ years in related field.
• Professional Engineer (PE) Certification preferred.
• Valid driver’s license preferred.
• Knowledge of local city, county, and state land use processes and regulations.
• Proficiency in technical skills in stormwater management, NPDES permitting, hydraulics, hydrological analysis, grading, and other site development-related designs.
• Demonstrated Civil 3D skills with the ability to design site layouts concept through completion.
• Ability to interact well with coworkers, clients, and regulatory agencies.
• Ability to read, write, and understand English for purposes of comprehending written job-related communications and verbal instructions and interactions.
• Strong attention to detail with excellent analytical and judgment capabilities.
• Ability to work independently, as well as in a team environment.

t Colliers Engineering & Design, our people are our most important resource. That’s why we are committed to providing all our employees with a safe, comfortable work environment, potential for career advancement, and the ability to impact society through their projects as well as Company sponsored activities.

This dedication begins with supporting a work life balance through a generous compensation package that includes: company paid medical, dental, and vision coverage; paid pregnancy disability leave; short- and long-term disability insurance; life insurance; a company-matched 401(k)/Roth; paid time off that includes parental and military leave; employee referral and professional license bonuses and a straight time policy that compensates exempt employees for billable hours worked in excess of 40 billable hours within a work week.

We have also created an internal culture that provides the resources and technology needed to encourage personal and professional growth opportunities through reimbursement for education; a free in-house resource for hundreds of educational and self-enrichment courses; mentorship program; wellness program; Women’s Organization and ongoing philanthropic opportunities.

Apply today to learn how you can join our team of professionals, so we can help you Accelerate Your Success !

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