Principal Engineer, Water Process

We are currently recruiting a skilled Wastewater Process Engineer to be based in the Romania Enterprise Capabilities Office in Bucharest. This position offers a flexible hybrid work arrangement, combining both in-office and remote working schedules, as outlined below.

The successful candidate will join our team and contribute to the planning, design, and optimization of wastewater treatment systems. In this role, you will focus on developing and improving wastewater process solutions, ensuring regulatory compliance, operational efficiency, and sustainable environmental performance.

The ideal candidate will have a strong background in wastewater, environmental, chemical, or process engineering, with proven experience in wastewater treatment plant design and process calculations.

Here is what you will do:

1. Wastewater Treatment

• Develop in-depth knowledge of wastewater treatment processes (preliminary, primary, secondary, and tertiary treatment).
• Perform process calculations for the sizing and design of wastewater treatment plants and associated units.
• Support process selection, optimization, and troubleshooting activities.
• Ensure compliance with applicable environmental regulations and discharge standards.

2. General Responsibilities

• Prepare technical reports, design documentation, and calculation notes.
• Collaborate with multidisciplinary internal teams and external clients.
• Apply scientific and engineering principles to solve technical challenges.
• Collect, interpret, and analyze operational and design data.
• Compare findings with applicable standards and regulatory requirements to ensure compliance.
• Participate in QA/QC review of drawings, technical documents, and calculations.

Minimum Requirements

• BA/BS in Chemical Engineering, Environmental Engineering, or related field.

Preferred Qualifications

• Minimum 7 years of experience in wastewater treatment plant design and process engineering.
• Experience in process calculations and sizing of wastewater treatment units.
• Experience in proposal preparation and client coordination is considered an asset.
• Strong knowledge of wastewater treatment processes and environmental regulations.
• Strong communication skills (technical writing, presentations, and verbal communication).
• Proficient in Microsoft Office Suite and AutoCAD.
• Knowledge of BioWin software is an advantage.

Skills and Attributes

• Ability to work independently and collaboratively within a team.
• Strong analytical and problem-solving skills.
• High attention to detail and commitment to quality.
• Commitment to continuous professional development in wastewater process engineering and environmental management.

At AECOM, you will have freedom to grow in a world of opportunity

Our Freedom to Grow hybrid working philosophy is the cornerstone of our success as a business – supporting a culture of flexibility, trust and performance at AECOM.

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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.