Assistant Project Manager - Public Infrastructure

LJA

McKinney (TX)

On-site

USD 90,000 - 115,000

Full time

14 days+

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Benefits offered by this job

Generous PTO

Health and dental plans

Parental leave

Tuition reimbursement

Referral bonuses

Volunteer days

Professional development

Internal mobility

Job summary

LJA Land Development is seeking an Assistant Project Manager to support delivery of public infrastructure projects while continuing hands-on engineering work. You will bridge project engineering and project management, coordinating with project managers, design teams, and clients on water and wastewater systems, drainage and local infrastructure.

Ideal candidates have a PE license in Texas, 4+ years in civil engineering, and experience as a Project Engineer, with strong communication and

Qualifications

4+ years of engineering experience in civil field.
Minimum 1 year as Project Engineer.
Experience with water, wastewater, drainage or local infrastructure projects.
Strong written and verbal communication skills.
Ability to build and maintain strong working relationships.
PE license in Texas is required.

Responsibilities

Support Project Manager with proposals, delivery, scheduling, billing, and client coordination.
Perform Project Engineering responsibilities, including Engineer of Record when assigned.
Assist with and learn project management aspects of project delivery.
Develop initial design approaches for major phases of large projects.

Skills

Project management

Coordination

Communication skills

Client relations

Water/wastewater projects

Education

ABET-accredited BS in Civil or Environmental Engineering

Job description

What Lja Has To Offer

LJA is offering an exciting opportunity that will allow you to reach your full career potential. The structure of our organization is designed to amplify your capabilities while gaining the benefits of being an employee-owner. What truly sets this opportunity apart is the chance to collaborate every day with dedicated, skilled, and supportive leaders. Whether you are in the office, in the field, or behind the scenes, working at LJA gives you the chance to grow through hands-on experience and exposure to a broad range of clients and services.

What Lja Has To Offer

What Makes Lja Different

At LJA, our employee-owners take pride in their work and their workplace. We’re guided by leaders who foster a culture of respect, collaboration and a shared vision of success. Our difference is evident in the experiences and opportunities we provide:

Employee-owned. Client-focused

Employee Stock Ownership Plan (ESOP)

Consistently ranked as a Top Workplace

Internal recruitment team, in-house training, and a marketing department specific to our industry

We celebrate flexibility, allowing every team and office to lead with their proven approach

Our culture champions continuous learning and personal growth

We believe success comes through constant evolution and communication

We are passionate about having fun and making money, all while creating impact

POSITION OVERVIEW:

As a Assistant Project Manager at LJA Land Development, you will support the delivery of public infrastructure projects while continuing to perform hands‑on engineering work. This role bridges project engineering and project management, with responsibilities that include coordination with project managers, design teams, and clients, while developing skills related to project delivery and management. Projects may include water and wastewater systems, drainage, and local infrastructure work.

A TYPICAL DAY MIGHT INCLUDE:

Supporting the Project Manager with proposals, project delivery, scheduling, billing, and client coordination

Performing Project Engineering responsibilities, including serving as Engineer of Record when assigned

Assisting with and learning the project management aspects of project delivery

Developing initial design approaches for major phases of large projects or managing engineering work on smaller projects with minimal supervision

Coordinating with internal design teams to support timely and accurate project execution

Supervising and mentoring less experienced engineers and technical support staff.

REQUIRED EDUCATION/LICENSE/CERTIFICATIONS:

Bachelor of Science in Civil Engineering or Environmental Engineering from an ABET-accredited program

Professional Engineer (PE) license in the State of Texas

REQUIRED QUALIFICATIONS:

4+ years of experience in the civil engineering field

Minimum of 1 year of experience serving as a Project Engineer

Experience supporting water, wastewater, drainage, or local infrastructure projects

Strong written and verbal communication skills

Demonstrated ability to build and maintain strong working relationships

IDEALLY, YOU SHOULD ALSO HAVE:

Experience supporting both project engineering and project management functions

Comfort coordinating across project managers, design teams, and clients

Interest in continued growth into a full Project Manager role

LEVEL UP WITH LJA

At LJA, we’re 100% employee-owned. This drives results, rewards ambition and supports long-term success for every team member. With almost 100 locations and 3,000+ employee‑owners (and growing), we’re building something big! We want you to be part of it.

Your future grows here.