KBR, alongside WSP as Designer Non-Owner Participant, is leading comprehensive design services and contributing to alliance management. Our infrastructure design scope includes track, overhead line equipment, drainage and overland flow, civil works, tunnel portals, building structures and services, HV and LV power systems, cable containment, systems integration and safety assurance, ensuring seamless delivery across the corridor. 

The Opportunity: 

We're looking for a Senior Mechanical Engineer to play a key role in shaping some of Australia's most significant rail and building infrastructure projects. Joining our growing Buildings team, you'll take the lead on the delivery of complex mechanical building services designs across major rail packages, working on projects that will leave a lasting impact on the way communities connect and move. 

This is an opportunity for an experienced engineer who enjoys balancing technical excellence with leadership and client engagement. You'll take ownership of project outcomes, working closely with multidisciplinary teams to develop innovative, practical, and high-quality engineering solutions from concept through to delivery. 

As a senior member of the team, you'll be trusted to provide technical direction, mentor developing engineers, and build strong relationships with clients and stakeholders. You'll also have the chance to contribute to business growth by helping identify opportunities, develop proposals, and strengthen our presence in the market. 

Whether you're leading major work packages, solving complex engineering challenges, or guiding the next generation of engineers, you'll be part of a collaborative team that values expertise, initiative, and a genuine passion for delivering great projects. 

What You'll Be Doing 

• Leading the design and delivery of mechanical building services solutions for major rail and infrastructure projects. 

• Providing technical leadership across studies, detailed design, specifications, and engineering documentation. 

• Collaborating with multidisciplinary teams to develop integrated and innovative project solutions. 

• Managing project delivery to meet quality, budget, and schedule objectives. 

• Building trusted relationships with clients, contractors, consultants, and regulatory authorities. 

• Supporting business development activities, including proposal preparation and identifying new opportunities. 

• Mentoring junior engineers and designers, helping to build capability across the team. 

• Contributing to a positive, collaborative culture where knowledge sharing and technical excellence are valued. 

About You: 

You're a seasoned Mechanical Engineer who combines strong technical expertise with a practical, solutions-focused approach. You thrive in complex project environments, enjoy collaborating with multidisciplinary teams, and are confident taking ownership of projects from concept through to delivery. 

With experience delivering building services and infrastructure projects within a consulting or commercial setting, you're comfortable leading design initiatives, managing competing priorities, and building trusted relationships with clients and stakeholders. You bring sound engineering judgement, a commitment to quality, and a passion for delivering outcomes that make a real impact.

You're equally comfortable rolling up your sleeves to solve technical challenges as you are mentoring junior engineers, contributing to project strategy, and helping grow client relationships. If you're looking for an opportunity to influence major rail and infrastructure projects while continuing to develop your leadership profile, we'd love to hear from you. 

What You'll Bring 

• A degree in Mechanical Engineering or a related discipline. 

• Chartered Engineer, CPEng, RPEQ (or equivalent) status, or the ability to obtain registration in the near future. 

• Strong technical capability across mechanical building services design, from concept development through to detailed design. 

• Experience delivering complex projects within consulting, engineering, or infrastructure environments. 

• The ability to lead and coordinate multidisciplinary teams to achieve successful project outcomes. 

• Excellent communication skills, with the ability to present technical information clearly to both technical and non-technical audiences. 

• A collaborative mindset and a genuine interest in supporting and mentoring others. 

Bonus Points If You Have 

• Experience working on rail, transport, or large-scale infrastructure projects. 

• Exposure to business development activities, client relationship management, or proposal preparation. 

• Project and design management experience, including commercial and budget responsibility. 

• A proven track record of building strong client relationships and identifying opportunities for growth. 

Why join KBR? 

At KBR, we partner with our clients and delivery partners to deliver exceptional outcomes — driven by collaboration, technical excellence and our One Team approach. 

With nearly 2,000 employees across Australia, we offer: 

• Access to iconic projects in Transport, Energy and Defence. 

• Genuine opportunities for professional development, certification and career progression. 

• A collaborative, people‑first culture where you are valued and supported. 

• Flexible work arrangements and work/life balance. 

• National career pathways and exposure to multidisciplinary teams. 

Join a team where people matter, your expertise is respected, and your work directly shapes critical Australian infrastructure.