Martinus Group is a 100% Australian-owned and operated rail construction company working on some of the globes largest rail infrastructure projects. We are a company that focuses on finding people who are the right fit into our company culture as much as having the right skills and experience. We encourage learning, experimentation, and out-of-the-box thinking, and we know that fun is a vital element of an engaged and productive workplace. We value the importance of balance between work and family life and promote this philosophy throughout the company. We are now seeking a highly capable Senior Commercial Manager to play a critical role in supporting the successful delivery of multiple rail infrastructure projects in and around Brisbane. This is a senior leadership opportunity for a commercially astute professional who thrives in complex project environments and is passionate about driving performance, managing risk, and maximising value. About the Role In this senior role you will oversee all commercial and contractual aspects across several rail infrastructure projects. You will lead commercial strategy, manage contract administration, and provide expert guidance to project teams to ensure strong financial and contractual outcomes. Key Responsibilities Lead the commercial management of multiple rail infrastructure projects from inception to completion Oversee contract administration, including claims, variations, and dispute resolution Develop and implement commercial strategies to optimise project performance Provide financial oversight including forecasting, cost control, and reporting Identify, assess, and manage commercial risks and opportunities Build and maintain strong relationships with clients, subcontractors, and key stakeholders Mentor and develop commercial team members About You Extensive experience in a senior commercial role within a major project environment, ideally rail or major civil projects Strong knowledge of contract law and experience with standard forms. Proven ability to manage complex claims, negotiations, and dispute resolution processes Exceptional leadership and stakeholder management skills Commercially driven with strong analytical and financial acumen Tertiary qualification in Quantity Surveying, Commercial Management, Engineering, or related discipline Why Join Martinus? Be part of a growing business delivering critical rail infrastructure across Australia Work on high-profile, technically complex projects Competitive salary package with career progression opportunities Supportive and collaborative team culture To apply online, please click on the appropriate link below. Please note agency submissions will not be accepted.