Subconsultant Relations Administrator - Gateway

Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets.

We are more than 36,000 people, in over 70 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 Subconsultant Relations Administrator to support one of the most iconic and consequential infrastructure initiatives in the United States — the Gateway Hudson Tunnel Project (HTP). In this role you will serve as the primary point of contact between the organization and its subconsultants. This role ensures effective communication, coordination, and compliance across all phases of project engagement. The administrator fosters strong partnerships, resolves issues, and supports strategic collaboration to ensure project success and alignment with organizational goals.

We are working in partnership with Parsons and Mace as part of the MPA Delivery Partner team, 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:

Relationship Management

• Establish and maintain productive relationships with subconsultants across disciplines.
• Serve as the central communication hub for contract negotiations, project updates, and issue resolution 
• Facilitate onboarding and orientation for new subconsultants, ensuring alignment with company standards and expectations 

Project Coordination

• Coordinate schedules, deliverables, and milestones between internal teams and subconsultants 
• Monitor subconsultant performance and provide feedback or support as needed.
• Ensure timely submission of reports, invoices, and documentation from subconsultants.

Compliance & Documentation

• Ensure subconsultants meet contractual, legal, and regulatory requirements.
• Maintain accurate records of contracts, certifications, insurance, and communications 
• Assist in the development and implementation of procedures to improve collaboration and efficiency 

Strategic Collaboration

• Identify opportunities for deeper collaboration and long-term partnerships.
• Support the restoration or renewal of previously successful subconsultant relationships 
• Report on the effectiveness of current partnerships and recommend improvements.

Reporting & Analysis

• Track and report on subconsultant engagement metrics, performance, and satisfaction.
• Analyze trends to improve collaboration strategies and optimize resource allocation.
• Prepare reports and presentations for leadership on subconsultant relations and outcomes.

Required Qualifications: 

• Bachelor’s degree in Business or Public Administration, Communications, Project Management, or a related field.
• 5+ years in consultant/vendor management, project coordination, or liaison roles.

Key Skills and Abilities: 

• Excellent verbal and written communication
• Strong organizational and multitasking abilities
• Proficiency in Microsoft Office and project management tools
• Ability to resolve conflicts and negotiate effectively
• Knowledge of industry-specific compliance and contracting standards 

Why Arcadis?

We can only achieve our goals when everyone is empowered to be their best. We believe everyone's contribution matters. It’s why we are pioneering a skills-based approach, where you can harness your unique experience and expertise to carve your career path and maximize the impact we can make together.

You’ll do meaningful work, and no matter what role, you’ll be helping to deliver sustainable solutions for a more prosperous planet. Make your mark, on your career, your colleagues, your clients, your life and the world around you.

Together, we can create a lasting legacy.

Our Commitment to Equality, Diversity, Inclusion & Belonging

We want you to be able to bring your best self to work every day which is why we take equality and inclusion seriously and hold ourselves to account for our actions. Our ambition is to be an employer of choice and provide a great place to work for all our people. We are an equal opportunity and affirmative action employer. Women, minorities, people with disabilities and veterans are strongly encouraged to apply. We are dedicated to a policy of non-discrimination in employment on any basis including race, creed, color, religion, national origin, sex, age, disability, marital status, sexual orientation, gender identity, citizenship status, disability, veteran status, or any other basis prohibited by law.

Arcadis offers benefits for full time and part time positions. These benefits include medical, dental, and vision, EAP,  401K, STD, LTD, AD&D, life insurance, paid parental leave, reward & recognition program and optional benefits including wellbeing benefits, adoption assistance and tuition reimbursement.  We offer nine paid holidays and 15 days PTO that accrue per year. The salary range for this position is $140,000 - $185,000. Actual salaries will vary and are based on several factors, such as experience, education, budget, internal equity, project and location.

Join Arcadis. Create a Legacy.

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