Senior Engineer- Mechanical (Wastewater)

AECOM; Indiana (PA); On-site; USD 9,400 - 14,000; Full time

Job summary

AECOM is seeking a Senior Engineer- Mechanical HVAC (Wastewater) to contribute to impactful energy and water projects across global offices. You will lead design efforts for wastewater treatment components, water networks, and equipment sizing, while guiding junior engineers and CAD technicians in a fast-paced, collaborative environment.

The role emphasizes developing concept to construction documentation, ensuring schedule and budget adherence, and advancing technical expertise within a

Qualifications

• Designing mechanical components for wastewater treatment systems (ASPs, MBBR, SBR, MBR, digesters, solids handling).
• Water treatment systems design including desalination and conventional/advanced processes.
• Preparation of hydraulic calculations and pipe sizing, pump and fan sizing.

Responsibilities

• Develop concept to detail design for wastewater and water networks.
• Prepare calculations, datasheets, specifications, pipe and valve schedules.
• Supervise 3D modeling and 2D drawing preparation and coordination.

Skills

Wastewater design

HVAC systems

P&IDs

3D modeling

Mentoring

Education

B.E./M.Tech. in Mechanical Engineering

Tools

CAD software

P&ID software

Job description

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.

We are seeking Senior Engineer- Mechanical HVAC(Wastewater)) in India. This is an exciting opportunity for a motivated engineer to contribute to impactful Energy projects across global offices and continue developing their technical expertise in a supportive, high-performing team.

Roles and responsibilities

• Experience in designing various mechanical components of wastewater treatment systems like – ASP, MBBR, SBR, MBR, Digesters, Solids Handling systems, etc. Experience in designing Water Treatment systems including conventional and advance system (e.g., desalination systems).
• Developing the design of Wastewater Treatment Plants (including Sludge Treatment facilities and Odour Control facilities) and Water and Wastewater Networks. Water and wastewater mechanical equipment sizing and selection: Screens, Mixers, Conveyors, Sludge Thickeners and Centrifuges, Chemical dosing systems, etc.
• Preparing hydraulic calculations for pressurized/gravity systems. Pump and fan sizing/selection.
• Valve selection (including penstocks). Pipe sizing and material selection.
• Developing concept design, detail design, tender, and construction documentation in accordance with both, schedule, and budget. Preparing and reviewing design documents e.g., calculations, datasheets, specifications, pipe, and valve schedules. Supervision of 3d modeling and 2d drawing preparation.
• Good understanding of P&IDs and PFDs,Multidiscipline coordination,undertake liaison with internal clients/customers/vendors to develop business relationships. Providing mentoring and support for junior engineers and cad technicians.

Qualifications & Experience:

• B.E./M.Tech. (preferred) in Mechanical Engineering field from a recognized university.
• Professional registration or licensure in their designated home office country or be in active pursuit of such registration
• 5 to 10 Years of experience in wastewater/water industry.

At AECOM, our Freedom to Grow philosophy supports flexibility and balance to help our people thrive. As part of this approach, we ask all hybrid employees to work from an AECOM office at least three days per week.

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.