Drainage / Hydrology Engineer

Assystem is an international company with one mission: accelerate the energy transition around the world.

Every day, our 6,500 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy.

We are a collective committed to the actors who are making the energy switch. Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition.

Drawing on more than 55 years' experience in highly regulated sectors subject to strict security and safety requirements, we provide our customers with engineering and project management services, as well as digital services and solutions to optimize the performance of complex infrastructure projects throughout their life cycle. The Group is currently ranked second in the world for nuclear engineering.

To ensure a viable, efficient, and reliable energy future for all

Job Description - Drainage / Hydrology Engineer Position

• Postgraduate in Hydrology / Environmental Engineering (or equivalent) with 0-2 years of proven experience delivering end-to-end drainage design solutions across urban, industrial, highway, airport, seaport, and railway projects.
• Demonstrated ability to independently plan, model, and optimize stormwater systems, from catchment analysis and concept stage through to detailed design and GFC deliverables.
• Strong command of hydrologic and hydraulic modelling tools (SWMM, HEC-RAS, HEC-HMS, SewerCAD/StormCAD, Civil 3D, QGIS, TUFLOW, MIKE, HY-8), applied to solve complex drainage challenges.
• Proven expertise in rainfall-runoff estimation and flood modelling using standard methods (SCS, CWC UGH, Rational Method), with clear and defensible design assumptions.
• Ability to deliver code-compliant designs (CWC, Indian, and international standards) for culverts, bridges, river training works, flood protection systems, and rainwater harvesting and reuse networks.
• Track record of producing high-quality, coordinated GFC drawings (plans, L-sections, cross-sections, GA details) with strict adherence to QA/QC standards.
• Strong experience in technical reporting, BOQs, cost estimation, and tender documentation, ensuring accuracy and constructability.
• Capable of reviewing and challenging client/contractor submissions, resolving design conflicts, and driving timely approvals with complete and coordinated deliverables.
• Ensure minimal design-related changes during construction through robust first-pass design, proactive risk identification, and interdisciplinary coordination.
• Lead and mentor teams to achieve on-time, high-quality delivery under demanding project schedules.
• Effective communicator with the ability to manage stakeholders and multidisciplinary interfaces.
• Practical exposure to site conditions and execution, ensuring designs are realistic and implementable.
• Experience in international/overseas projects, code knowledge is an added advantage.

Postgraduate in Hydrology / Environmental Engineering (or equivalent)

**Security clearance**

This role requires the successful candidate to hold a minimum of a Security Check (SC) clearance without any caveats to that clearance.

Due to the nature of work this role will be delivering and for the protection of certain assets, the successful candidate has to be a UK national or in MoD approved cases a Dual National from a non-ITAR country.

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.