Principal Engineer, Process

**Company Description** AECOM’s **Enterprise Capabilities** team is looking for a Sr. Chemical Process Engineer to join our team in Bucharest, Romania. **About Enterprise Capabilities** Fundamental to our _Think and Act Globally_ strategy and digital adoption, Enterprise Capabilities (EC) is AECOM’s primary vehicle for workshare. Operating across geographic boundaries and time-zones, EC partners with regional and Global Business Line project teams to provide technical expertise, accelerate delivery and keep AECOM competitive in the industry. With a team of over 3000 technical professionals located across nine countries and remote technical anchors, EC teams are trusted to deliver high-quality, specialist services that help to fill capability gaps, resourcing needs and technical constraints on projects of all scopes and sizes. **Start here. Grow here.** We are seeking an experienced and highly skilled **Senior Chemical & Process Engineer** to join our global Process & Piping team and provide technical leadership across industrial, energy transition, and decarbonization projects. This position will contribute to advanced process design, modeling and optimization activities within areas such as Carbon Capture, Utilization & Storage (CCUS), Hydrogen Production, Storage & Use, Gas Piping, Distribution & Transmission, Waste-to-Energy, Thermal Power Generation, and Distributed Energy Systems (DES). **Job Description** We are seeking an experienced and highly skilled **Chemical & Process Engineer** to join our global Process & Piping team and provide technical leadership across industrial, energy transition, and decarbonization projects. This position will contribute to advanced process design, modeling, and optimization activities within areas such as Oil & Gas, Power Generation, Carbon Capture, and Hydrogen Production. The successful candidate combines Chemical/Process Engineering skills with experience in heat and Mass Balance, Process Simulations, process equipment sizing, P&ID’s. **Here is what you will do:** **1. Oil& Gas, Power Generation, Carbon Capture, Hydrogen Generation** + Perform process design, analysis, and simulation. + Conduct equipment and system sizing (heat exchangers, compressors, storage, pumps, relief systems, etc.). + Support feasibility studies and evaluations. + Ensure alignment with process safety, risk assessment methodologies, and relevant engineering standards. + Prepare process documentation, including simulations, process descriptions, heat & mass balances, and design criteria. + Coordinate process interfaces with electrical, mechanical and energy systems engineering teams. + Perform hydraulic calculations, including pressure drop, flow capacity, and line sizing for all types of systems (liquid, gas, multi-phase systems). + Support design considerations for pipeline routing, compression stations, and interconnection facilities. + Review and validate piping-related requirements with Mechanical & Piping disciplines. **4. Other Responsibilities** + Senior technical advisor for process engineering activities and deliverables. + Participate in interdisciplinary design reviews and client technical workshops. + Perform QA/QC of simulations, calculations, design reports, drawings, and specifications. + Contribute to cost estimates, schedules, proposal inputs, and technical write-ups. + Support HAZOP activities throughout the engineering lifecycle, ensuring that hazards, operability constraints and design safeguards are addressed in accordance with project requirements. + Prepare and review technical reports, datasheets, specifications and calculation notes. + Collaborate with internal global teams, vendors and clients to ensure alignment and technical consistency. + Apply scientific principles and simulation tools to solve complex technical problems. + Ensure compliance with applicable codes, standards, and regulatory frameworks. + Mentor junior and mid-level engineers, supporting professional development and knowledge transfer. **Qualifications** **Here’s what we’re looking for:** + BA/BS in Chemical Engineering, Process Engineering, or related field. + Minimum 5+ years of relevant industrial process engineering experience (Oil & Gas, Power Generation, Carbon Capture, Hydrogen Production, Storage & Use). + Experience on Water/Wastewater process is considered a plus. + Proficiency in process simulation software (e.g., Aspen HYSYS, UniSim Honeywell) + Experience with Basic Engineering, FEED, and Detailed Engineering project phases. + Familiarity with American and international engineering standards (API, ASME, ISO, etc.). **Preferred Skills** + Ability to work independently and within multidisciplinary global teams. + Effective coordination skills with clients, consultants, and vendors. + Fluency in English (written and spoken). **Additional Information** **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._ \#LI-IP1 **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. **ReqID:** J10143860 **Business Line:** Energy **Business Group:** DCS **Strategic Business Unit:** Enterprise Capabilities **Career Area:** Engineering **Work Location Model:** Hybrid