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Mechanical Process Engineer - job 2 of 2

Company 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.

Job Description

AECOM is actively seeking a highly motivated Mechanical Process Engineer for employment in the Chelmsford, MA office. This Mechanical Process engineer position will involve a variety of new and renovations to existing water treatment facilities, water booster pump stations, and wastewater pumping and treatment facilities.

This position will be heavily focused on the detailed technical design associated with these facilities including:

  • Pumps, piping, valves, etc.
  • Headworks, screening, grit removal systems
  • Aeration, filtration, separation, dewatering and clarification systems
  • Odor control systems
  • Chemical feed systems
  • Disinfection
  • Sludge and residual handling systems
  • Work closely with project managers and design managers.
  • Develop process flow diagrams and assist with the development of process & instrumentation diagrams (P&IDs).
  • Perform hydraulic calculations for pump sizing including total dynamic head and operating points, net positive suction head margin, suction specific speed and submergence.
  • Research equipment and system design recommendations.
  • Coordinate with equipment vendors on equipment selections and draft specifications.
  • Develop technical specifications, equipment and piping plans, elevations, section and details.
  • Perform engineering related calculations for process equipment sizing and selection.
  • Verify compliance with applicable codes and engineering standards / practices.
  • Coordinate with other in-house engineering disciplines as needed.
  • Review shop drawings of proposed equipment from the construction contractor.
  • Performs specific and moderate portions of a broader assignment of an experienced engineer.
  • Gathers and correlates basic engineering data using established and well-defined procedures.
  • Works on detailed or routine engineering assignments involving calculations and relatively simple tests.
  • Proposes approach to solve new problems encountered using modifications of standard procedures or methods developed in previous assignments.
  • Identifies discrepancies in results.
  • Provides guidance to entry level engineers.
  • Performs work in accordance with agreed upon budget and schedule with little supervision.
  • Independently performs all the tasks necessary to complete primary design elements for engineering works.
  • Performance at this level requires developmental experience in a professional position.

 

Qualifications

Minimum Requirements:

  • Bachelor's degree in engineering and 6 years of experience in design and layout of mechanical process piping, valves, equipment, etc.
  • Licensed Professional Engineer.

Preferred Qualifications:

  • 8+ years of experience in design and layout of mechanical process piping, valves, equipment, etc.
  • Proficient with AutoCAD and REVIT.
  • Experience in the water/wastewater industry.
  • Ability to work with a diverse team.
  • Excellent oral and written communication skills.
  • Detail-oriented and technical, yet experienced enough to see the big picture.
  • Experienced, self-directed professional.
  • Ability to work independently with minimal oversight.
  • Ability to meet quality, schedule and budget expectations.
  • Ability to multi-task and be flexible and able to adapt to rapidly changing project requirements and deadlines.
  • Ability to apply passion and enthusiasm for design in a collaborative and progressive team-oriented work environment.
  • Proficient in Microsoft Office Suite (Word, Excel, Power Point).

Additional Information

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 2024. 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. 

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Average salary estimate

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What You Should Know About Mechanical Process Engineer, AECOM

Are you ready to make a difference with your engineering skills? At AECOM, we're searching for a Mechanical Process Engineer to join our dynamic team in Chelmsford, MA. In this exciting role, you will focus on designing and renovating cutting-edge water treatment facilities, wastewater pumping stations, and various other essential systems that people rely on every day. As a vital player on our team, you'll get to work closely with project and design managers, developing process flow diagrams and preparing process & instrumentation diagrams (P&IDs). Your expertise will shine as you perform hydraulic calculations for pump sizing and coordinate with vendors on equipment selections. AECOM values innovation, and we want your input on the design of pumps, piping, valves, and odour control systems. Collaboration is key, so you'll also coordinate with other engineers to ensure every project meets stringent compliance and quality standards. Not to mention, you’ll help mentor entry-level engineers, passing on your knowledge in a positive and supportive work environment. If you’re detail-oriented, self-directed, and looking for a rewarding career, this position at AECOM will provide you with the opportunity to make a meaningful impact in communities around the globe. Together, we can deliver a better world, and we can’t wait for you to be part of our mission!

Frequently Asked Questions (FAQs) for Mechanical Process Engineer Role at AECOM
What are the responsibilities of a Mechanical Process Engineer at AECOM in Chelmsford, MA?

As a Mechanical Process Engineer at AECOM in Chelmsford, MA, your primary responsibilities will include designing new water treatment facilities and renovating existing ones. You'll work on various systems such as pumps, piping, valves, and other mechanical equipment. Additionally, you'll gather engineering data, perform hydraulic calculations for pump sizing, develop process flow diagrams, and ensure compliance with engineering standards.

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What qualifications are needed for the Mechanical Process Engineer position at AECOM?

To qualify for the Mechanical Process Engineer role at AECOM, you should possess a Bachelor's degree in engineering along with at least 6 years of experience in the design and layout of mechanical process piping and equipment. A Professional Engineer license is also required. Although not mandatory, candidates with 8+ years of experience in the water/wastewater industry and proficiency with software like AutoCAD and REVIT are preferred.

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How does a career as a Mechanical Process Engineer look at AECOM?

A career as a Mechanical Process Engineer at AECOM offers a unique opportunity to work on diverse projects that have a real-world impact. You’ll engage in groundbreaking work that develops sustainable and innovative solutions in water treatment and wastewater management. Plus, with AECOM’s commitment to your professional development, you’ll receive extensive training and support to grow your skills in a collaborative team environment.

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What technical skills are important for a Mechanical Process Engineer at AECOM?

Important technical skills for a Mechanical Process Engineer at AECOM include a solid understanding of mechanical process piping design, proficiency in hydraulic calculations, and familiarity with software such as AutoCAD and REVIT. Being detail-oriented and having excellent problem-solving capabilities will also help you succeed in designing effective systems for water treatment and wastewater management.

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What benefits does AECOM offer to its employees in the Mechanical Process Engineer role?

AECOM offers a comprehensive benefits package to its employees, including medical, dental, vision, and life insurance. Additional perks include paid time off, flexible work options, retirement savings plans, and employee stock purchase plans. AECOM is committed to supporting employees in their personal and professional growth, making it a great place to build your career.

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Common Interview Questions for Mechanical Process Engineer
Can you explain your experience with designing mechanical process piping systems?

When preparing for this question, be sure to highlight specific projects where you designed piping systems. Discuss the methodologies you used in your design process, such as relevant software employed for the layout, and how you ensured compliance with industry standards.

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How do you approach hydraulic calculations for mechanical systems?

For this question, outline your process for performing hydraulic calculations, detailing the equations and methods you use to determine pump sizing and total dynamic head. Examples from your past experiences could enhance your response.

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Describe a challenging engineering problem you've faced and how you resolved it.

Use the STAR technique (Situation, Task, Action, Result) to share a specific example. Explain the challenge, what actions you took to solve it, and the successful outcome of your efforts.

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How do you ensure quality and compliance in your engineering designs?

Discuss the protocols you follow to verify your designs against applicable codes. You'll want to emphasize your attention to detail and any specific tools or checklists you utilize to ensure quality.

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What role does collaboration play in your engineering work?

Mention your experiences working alongside cross-functional teams. Highlight how effective communication and collaboration lead to successful project completion, especially in multidisciplinary environments like AECOM.

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How do you stay updated on industry trends and technologies?

It's important to demonstrate your commitment to continuous learning. Discuss any professional organizations you belong to or conferences and workshops you attend to keep up with advancements in mechanical engineering.

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Can you elaborate on a project where you had to mentor junior engineers?

Provide a specific example where you took the lead in guiding junior engineers, detailing the support and resources you provided and how this benefited the team and project outcomes.

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What software tools are you proficient in and how do they aid your work?

List relevant software tools like AutoCAD and REVIT. Discuss how they contribute to your design process, improve collaboration, or enhance efficiency in project completion.

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How do you prioritize tasks on multiple projects?

Discuss your time management strategy, how you assess priorities based on deadlines and project scope, and any tools you use to keep track of your tasks and milestones.

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What motivates you as a Mechanical Process Engineer?

Reflect on your passion for engineering and desire to contribute positively to projects that benefit society. Highlight how this motivation drives you to deliver high-quality work consistently.

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As the world’s trusted infrastructure consulting firm, we’re committed to managing our business with the utmost responsibility and to always strive for better – whether by reducing emissions, creating social value or diversifying our senior leader...

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DATE POSTED
April 12, 2025

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