Senior Commercial Manager - Gateway

Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets. We are more than 34,000 people, in over 30 countries, dedicated to improving quality of life. Everyone has an important role to play. With the power of many curious minds, together we can solve the world’s most complex challenges and deliver more impact together. Role description: Arcadis is seeking a highly skilled and motivated Senior Commercial Manager to support one of the most iconic and consequential infrastructure initiatives in the United States — the Gateway Hudson Tunnel Project (HTP). We are working as the Delivery Partner along with team members and selected by the Gateway Development Commission to deliver this transformative project. The HTP is a critical component of the broader Gateway Program — one of the most ambitious and impactful transportation initiatives in the nation — and is designed to strengthen mobility, enhance resiliency, and ensure the long-term reliability of the Northeast Corridor. The project encompasses the construction of a new, two-track rail tunnel beneath the Hudson River, along with the full rehabilitation of the existing 113-year-old North River Tunnel. This vital infrastructure supports more than 200,000 daily passengers via Amtrak and NJ TRANSIT and serves as a backbone for economic activity and connectivity between New York and New Jersey. This is more than just a job — it’s a once-in-a-generation opportunity to contribute to a nationally significant infrastructure program that will reshape rail transportation, drive sustainable economic growth, and improve regional accessibility for millions. As part of this high-performing, multidisciplinary team, you will help deliver excellence on one of the most technically complex and high-profile projects in the world. If you're seeking to make a meaningful, lasting impact — while advancing your career alongside some of the best minds in the industry — this is your moment . Role accountabilities:

Develop and implement the commercial management strategy for assigned project packages and contracts. Provide strategic commercial advice to project leadership regarding contractual rights, obligations, risks, and opportunities. Lead commercial teams supporting design, procurement, construction, and commissioning activities. Manage the administration of major construction, design-build, professional services, and supplier contracts. Ensure compliance with contractual obligations, project requirements, and applicable regulations. Lead contract reviews, negotiations, amendments, and commercial closeout activities. Oversee project cost forecasting, budgeting, cash flow management, and financial reporting. Monitor project expenditures and commitments to ensure alignment with approved budgets. Identify cost-saving opportunities and implement value-engineering initiatives where appropriate. Lead evaluation and negotiation of contract variations, change orders, and compensation events. Establish robust processes for tracking, pricing, evaluating, and approving changes. Ensure timely resolution of commercial impacts arising from design development, site conditions, and construction activities. Develop proactive strategies to prevent claims and disputes. Manage preparation, evaluation, negotiation, and settlement of contractor and subcontractor claims. Coordinate with legal counsel and executive management on high-value or complex disputes. Maintain comprehensive records supporting contract administration and claim resolution. Identify, assess, and manage commercial and contractual risks throughout the project lifecycle. Maintain project risk registers and mitigation plans related to commercial matters. Support procurement and project teams in evaluating commercial risks associated with new contracts and procurement activities. Provide recommendations to