Alireza Maddah
@alirezamaddah
Principal Process Engineer with 25+ years delivering refinery, gas and petrochemical process designs.
What I'm looking for
I’m a Principal Process Engineer with over 25 years in the oil, gas, and petrochemical industries, specializing in process engineering and project delivery. I’ve managed roles ranging from Lead Process Engineer to Project Engineering Manager and Project Manager across Conceptual, Basic, FEED, and Detailed/EPC stages.
I lead teams and act as the primary interface with client engineering groups, controlling process engineering budgets and schedules to keep projects on track. I’m hands-on across front-end conceptual design and detailed engineering, building sound, independently auditable process decisions.
My work covers end-to-end process deliverables—BFDs/PFDs, P&IDs, UDDs, datasheets, and simulations—plus steady-state and dynamic modeling. I also drive process safety through HAZOP/HAZID, and SIL/LOPA studies, including relief and flare analysis, surge and flow assurance studies.
In recent assignments, I led detailed designs for alternative NG/NGL export routes, LPG pump upgrades, produced water disposal and ST-B1 debottlenecking. I combine strong technical depth with leadership, vendor document governance, and field engineering support during construction.
Experience
Work history, roles, and key accomplishments
Lead Process Engineer
ExidaSP
Mar 2025 - Present (1 year 3 months)
Led detailed process design and hydraulic calculations for alternative NG/NGL export routes, updating PFDs/P&IDs/UFDs and coordinating multidisciplinary teams. Delivered detailed design for new LPG loading pumps and field wide produced sour water disposal, including process deliverables and HAZOP action closure support.
Lead Process Engineer
CMG
Apr 2024 - Aug 2024 (4 months)
Provided technical leadership and process engineering support across Concept Study, Pre-FEED, FEED, and Detailed Engineering phases. Served as primary interface to client engineering teams and supported delivery via schedule/budget control and coordination of multidisciplinary design.
Lead Project/Process Engineer
EIED Company
Jun 2022 - Apr 2024 (1 year 10 months)
Managed process deliverables for HDPE/LLDPE/PP plants, including BFDs, PFDs, P&IDs, UDDs, datasheets, simulations, and hydraulic/PSV load calculations. Led process representation in client/project meetings, coordinated multidisciplinary design, and supported HAZOP/HAZID/SIL studies through procurement and construction readiness.
Project Manager and Lead PE
Soroush Energy Pooya
Mar 2021 - Jun 2022 (1 year 3 months)
Led process design for wellhead facilities, separation/desalting units, crude storage and pump stations, pipelines, wastewater treatment, flare, and utilities integration for a brownfield surface facilities project. Managed process deliverables (BFDs/PFDs/P&IDs/UDDs/datasheets/simulations), performed hydraulic/PSV calculations and flare sizing, and coordinated HAZOP/HAZID/SIL activities to address
Process Safety Department Head
Hirbodan Management Company
Feb 2020 - Mar 2021 (1 year 1 month)
Led the Process Department, directing detailed design and utilities engineering for gas pipelines, power generation, PVC plant, crude pipeline, flare and utilities, and building utilities. Oversaw process calculations, simulations, relief/blowdown design, and led process-safety studies (HAZOP/SIL/HAZID/LOPA/ALARP), including OLGA-based surge studies for gas pipelines.
Project Engineering Manager
Chagalesh Consulting Engineers
May 2016 - Feb 2020 (3 years 9 months)
Managed process engineering delivery and team performance for refinery upgrading and oilfield development projects, including AMINE and SWS units. Served as engineering manager and client contact, managed third-party participation in HAZOP/HAZID/SIL, reviewed/verified deliverables (PFDs/P&IDs/UDDs/calculations/simulations), and ensured schedule and quality compliance.
Project Engineering Manager
Oil Design and Construction Company
Sep 2011 - May 2016 (4 years 8 months)
Led process engineering for refinery and flare gas recovery scope, covering conceptual through detailed engineering, procurement, and construction support for a zero-flaring project. Directed feasibility and detailed process deliverables (PFDs/P&IDs/calculations/simulations), managed engineering team delivery, and supported vendor compliance for equipment packages.
Lead Process Engineer
NARGAN Engineers and Constructors
Feb 2006 - Sep 2011 (5 years 7 months)
Led process engineering for EPC refinery upgrading scope covering AMIN, SWS, LPG recovery, and interconnection units, managing detailed design, procurement, and field engineering activities. Supervised process engineering teams (16 engineers plus 3 senior engineers), performed re-simulation and updates to heat/mass balance, supported licensor coordination, and prepared/delivered PFDs/P&IDs/UFDs an
Senior Process/Safety Engineer
Iranian Offshore Engineering & Construction
Feb 2005 - Feb 2006 (1 year)
Acted as client representative for offshore facilities EPC, working with Technip as consultant/contractor to review process and process-safety documents for accuracy and compliance. Coordinated multidisciplinary integration to resolve technical issues and supported delivery of compliant EPC documentation and deliverables.
Lead Process Engineer
Iran Itok Co.
Jan 2004 - Feb 2005 (1 year 1 month)
Performed detailed design engineering and procurement services for gas compressor station and LPG plant projects. Prepared calculations, PFDs/P&IDs/UFDs, simulations, and datasheets; managed process engineering activities, man-hour planning, and schedule to ensure compliance with project requirements and industry standards.
Education
Degrees, certifications, and relevant coursework
Isfahan University of Technology
Master of Science in Chemical Engineering, Chemical Engineering (Separation Processes)
2001 - 2003
Master of Science study in Chemical Engineering with a focus on Separation Processes at Isfahan University of Technology.
Sharif University of Technology
Bachelor of Science in Chemical Engineering, Chemical Engineering (Gas Industries, Oil & Gas Processing)
1992 - 1996
Bachelor of Science in Chemical Engineering covering Gas Industries and Oil & Gas Processing at Sharif University of Technology.
Availability
Location
Authorized to work in
Job categories
Skills
Interested in hiring Alireza?
You can contact Alireza and 90k+ other talented remote workers on Himalayas.
Message AlirezaFind your dream job
Sign up now and join over 250,000+ remote workers who receive personalized job alerts, curated job matches, and more for free!
