Work with Us. Change the World.

At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.

There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

AECOM is seeking a Principal Sanitary and Fire Suppression Design Engineer to serve as a specialized technical resource and advisor within our building services team. The successful candidate will provide expert input to studies and design across plumbing, sanitary drainage, domestic water, and fire suppression systems, develop design procedures that enable high-quality and cost-effective delivery by others, and lead quality control of discipline deliverables. Working independently with latitude to set work priorities, the engineer is accountable for the technical outcome of assigned projects and represents the discipline in interdisciplinary coordination and client engagement.

Responsibilities:

• Provide specialized technical input to studies and design for sanitary, plumbing, and fire suppression systems, applying advanced understanding across all steps of completing the discipline component of the PS&E package.
• Develop study and design procedures that facilitate high-quality, cost-effective work by junior and support staff.
• Prepare and complete sanitary drainage, domestic hot and cold water, storm/rainwater, and fire suppression (sprinkler, standpipe, and special hazard) designs, calculations, and drawings.
• Develop construction cost estimates and estimates of technical effort for assigned projects.
• Perform quality control reviews of design calculations and drawings, and serve as Lead Verifier confirming the technical approach satisfies the client scope of services.
• Prepare technical specification sections for the discipline.
• Participate in interdisciplinary review of project deliverables and resolve conflicting requirements or difficult coordination issues.
• Provide input to the development of engineering budgets and schedules, and ensure technical goals, milestones, and budgets are met.
• Prepare complex project deliverables using a team of junior technical and support staff, providing structured guidance and training to develop team capabilities.
• Communicate with clients to discuss work scope, request supporting information, and receive comments on draft work products.
• Assist with proposals to provide services or obtain funding for projects or programs.

Qualifications & Experience:

Required:

• Bachelor’s degree in Mechanical Engineering, Building Services Engineering, or a related discipline.

• Extensive experience in the design of sanitary, plumbing, and fire suppression systems for buildings and infrastructure.

• In-depth knowledge of applicable plumbing and fire protection codes and standards (e.g., NFPA 13/14/20, IPC/UPC, EN 12845, or relevant local normatives).

• Proficiency in hydraulic calculation, system sizing, and relevant design software.

• Demonstrated ability to perform quality control reviews and act as a technical verifier on projects.

• Ability to work independently, determine work priorities, and apply judgement outside defined parameters to make decisions.

• Strong communication skills, able to convey complex or sensitive information to internal and external stakeholders.

Preferred:

• Professional Engineer (PE) licence or equivalent professional registration, or eligibility to obtain.

• Active participation or leadership in professional and industry organizations (committee leader, event organizer, or speaker).

• Contributions to industry thought leadership through publications, social media, or speaking engagements.

• Experience with BIM workflows and coordination on multidisciplinary projects.

• Formal supervisory experience, including defining team operating standards and mentoring junior engineers.

• Experience preparing proposals and supporting business development efforts.

• Familiarity with multiple regulatory frameworks across regions or project types.

At AECOM, we are committed to maintaining a secure and trustworthy recruitment process and take any fraudulent hiring activity seriously. To support this commitment, all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment.

About AECOM 

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan. 

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com. 

What makes AECOM a great place to work 

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community - where you have the freedom to grow in a world of opportunity. 

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.