Join a well-established, 30-year Queensland consultancy, proudly awarded the 2026 IPWEAQ Employer of the Year title.

The Firm Behind the Designs

Empowering Success Through Vision and Experience

Harrison Infrastructure Group (HIG) is a multidisciplinary engineering consultancy delivering civil, traffic, hydraulic and electrical design, alongside construction contract administration and project management. Its highly experienced team provides specialist services to the Department of Transport and Main Roads (TMR), local councils and other clients across the state.

With more than 90 professionals across multiple Queensland offices, plus a satellite office in Roma, HIG combines structure and stability with a close-knit, family-oriented culture. Staff and their families come together for company-wide events, and every team member works in an environment where their ideas and expertise genuinely make a difference.

To learn more, visit www.hig.com.au

Where Your Expertise Takes Shape

Harrison Infrastructure Group is seeking a full-time Principal Civil Designer/Engineer, ideally based in Toowoomba, QLD. HIG is also open to the role being based in its Brisbane, Sunshine Coast, Bundaberg or Rockhampton office.

This is a key senior technical role reporting to the Toowoomba Office Manager, joining HIG at a time of continued growth. The role is built around design excellence rather than formal team leadership, with the opportunity to step up and manage projects across the business.

No two projects look quite the same. Your work may span road design, subdivision design and wider civil infrastructure, tailored to your background and experience.

What You'll Deliver

In this role, you will:

Design Leadership

• Scope and estimate civil design projects
• Prepare civil designs and produce detailed project design documentation
• Assign tasks and priorities to design and technical staff to ensure project requirements are met
• Mentor junior team members to build their technical capability

Project Management

• Lead the design and documentation of civil infrastructure projects from concept to completion
• Manage and coordinate subconsultants
• Maintain regular client engagement and manage stakeholder expectations
• Track project budgets, and forecast and report on project expenditure

What You'll Bring to the Drawing Board

To qualify, you will need a minimum of an Associate Diploma in Civil Engineering and 15+ years' civil design experience across urban and rural roads, traffic and/or hydraulics.

You will also bring:

• Advanced skills in AutoCAD, 12d and/or Civil 3D, supported by strong Microsoft Suite capability
• A proven track record in project management and cost control
• In-depth knowledge of Austroads, TMR and local authority standards, with experience applying local client design guidelines

Highly Regarded

• Experience on TMR projects
• Land development and subdivision design experience
• Advanced 12d capability
• Water Services Association (WSA) experience

Please note: Australian citizenship is required for this role.

Is This You?

If you're the kind of civil design professional who takes pride in getting it right, thinks before acting, and can explain a complex design as clearly as you can draw it, this role is built for you.

HIG is looking for someone who brings:

• A meticulous eye for detail and genuine pride in getting the design right the first time
• Sound judgement, blending technical analysis with practical experience to make confident calls
• The discipline to follow established processes, with the initiative to find practical solutions when challenges arise
• Clear, approachable communication, whoever's in the room
• The confidence to manage your own workload and adapt smoothly as priorities shift
• A collaborative, team-first approach, always ready to support colleagues and share the load

If you're looking for a role where your judgement is trusted, your craft is respected, and your experience carries real weight, this is it.

Why Join HIG?

In return for your expertise and commitment, you'll be rewarded with a competitive salary, negotiable to reflect your skills and experience, PLUS super, along with a range of benefits designed to support your work and lifestyle:

• Paid Overtime, a rare offering among engineering consultancies
• Flexible Start and Finish times PLUS Time Off in Lieu (TOIL)
• Access to Work Vehicles for site inspections
• Strong Mentoring and Buddy Support
• Internal and External training and standards-focused working groups
• Career Development and Progression Opportunities

Your Next Project Starts Here

If this sounds like your next move, HIG would love to hear from you. APPLY NOW!

Harrison Infrastructure Group is an equal opportunity employer committed to building a diverse and inclusive team.