Title: Senior Commercial Specialist
Do you thrive in complex environments where government contracting, risk management, and cost control intersect?
Are you looking to work alongside top-tier professionals in a supportive, high-performance team? If so, we want to hear from you.
As KBR's Infrastructure Solutions Australia division continues to expand, particularly within our Defence, Buildings and Nuclear market sector, we are seeking a Senior Commercial Specialist to play a key role in supporting our growing pipeline of projects and proposals.
This role is available due to continued growth, and robust commercial leadership is essential to ensuring successful delivery across major contracts.
We are seeking applicants to be based in either our Sydney or Adelaide Offices.
Key Responsibilities:
Support the pursuit team in developing contracting strategies for prime contracts, major subcontracts, and purchase orders
Administer key commercial activities including claims, variations, delays, and subcontract execution in line with the commercial strategy
Ensure timely and accurate project information is provided to the Project Manager to support decision-making
Support preparation and review of estimates to ensure completeness and accuracy
Contribute to the development and implementation of change management processes to identify commercial exposures and claims
Assist in negotiating major subcontracts and purchase orders, ensuring appropriate risk and commercial terms are flowed down
Draft contractual correspondence including notices, letters of entitlement, and supporting documentation
Monitor project financial performance, risks, cash flow, and adherence to commercial terms and financial targets
Collaborate with legal, procurement, subcontracts, and other specialists to support claims development and submission
Contribute to commercial training, tools, procedures, and capture of lessons learned for continuous improvement
Skills & Experience Required:




Tertiary qualification in Business, Engineering, Law, Finance, Management, or Quantity Surveying
Minimum 8 years of relevant experience working with contractors, subcontractors, and owners on defence or government infrastructure or engineering projects
Solid understanding of the nuances and complexities of government and defence contracts
Proven experience in commercial management of infrastructure, engineering consulting, construction or building projects. Experience in defence building or infrastructure projects would be a bonus
Proficient in submitting contractual notices, processing variations, and managing extensions of time
Demonstrated ability to liaise effectively with internal departments and subcontractors to ensure accurate contract cost tracking and management
Strong commercial acumen and attention to contractual compliance and risk mitigation
Why join KBR:
Our KBR Values - We Value Our People, We Deliver, We Are People of Integrity, We Empower, We Are a Team of Teams – these values embody our people centric organisation. At KBR, we don't just talk about culture—we live it. Connect with diverse thinkers and passionate collaborators across our Australian and global teams. Belong to a workplace where your voice matters, and your impact is valued. Grow your career with ongoing opportunities to lead, learn, and push boundaries.
What We Offer:
A supportive team where leadership is human, not hierarchical.
Flexible work options that suit your lifestyle.
Meaningful, high-impact projects across a variety of sectors.




Leadership and technical development programs to support your growth.
KBR — Delivering Solutions, Changing the World.
KBR brings together the best and brightest to deliver science, technology and engineering solutions that help governments and companies around the world accomplish their most critical missions and objectives. In everything we do, we are guided by our ONE KBR Values: We Value Our People – We create diverse, inclusive environments in which each person can feel safe, respected and valued, and where everyone has opportunities to grow and reach their full potential. We Deliver – We are uncompromising in our commitment to deliver innovative, high-quality, technology-led solutions for our customers and exceptional, sustainable value for all our stakeholders. We Are People of Integrity – We value honesty, trust, courage, fairness, prudence and tenacity. We believe doing what's right for the planet, the communities where we work, and our people is valuable for business. We Empower – We empower our people with a shared purpose, the right tools and the supportive culture they need to be proactive decision-makers, to be adaptive to change, and to succeed. We Are a Team of Teams – We have a will to succeed, but we value the achievements of our team of teams over individual accomplishments. Our collective focus makes us a better, stronger, more effective company. We have also embedded environmental, social and governance (ESG) principles in every business operation and corporate function. Not only are we committed to operating safely, sustainably and equitably, but we are also committed to using our capabilities and expertise to help our customers accomplish their sustainability goals.
Worldwide, KBR employs a diverse workforce approximately 29,000 people strong, with customers in more than 80 countries and operations in 40 countries. At KBR, We Deliver.
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📌 Senior Commercial Specialist (Sydney)
🏢 KBR Careers
📍 Sydney