Postdoctoral Researcher in Surface Water Salinity Intrusion and Coastal Modelling at TU Delft, Netherlands (2026)

Delft University of Technology (TU Delft), Netherlands, is seeking a highly motivated Postdoctoral Researcher to investigate surface water salinity intrusion in the Ganges-Brahmaputra-Meghna (GBM) Delta of Bangladesh. This exciting international research opportunity combines estuarine hydrodynamics, coastal ocean modelling, climate adaptation, and sustainable water management in one of the world's most climate-vulnerable delta systems.

The position is part of the COAST-Water-Solutions research programme funded by the Dutch Research Council (NWO) and involves collaboration with leading institutions in Bangladesh and the Netherlands.

Applications are open until 6 July 2026.


About the Research Project

Salinity intrusion is becoming a growing global challenge, threatening freshwater availability in many estuaries and deltas worldwide. The problem is especially severe in the Ganges-Brahmaputra-Meghna (GBM) Delta, home to millions of people and one of the most climate-sensitive regions on Earth.

The selected postdoctoral researcher will investigate:

  • Saltwater intrusion mechanisms

  • Climate change impacts on salinity

  • Future salinity scenarios

  • Coastal and estuarine hydrodynamics

  • Sustainable mitigation strategies

The ultimate goal is to develop science-based solutions that support climate-resilient water management in Bangladesh.


Research Objectives

The project focuses on understanding how salinity intrusion is affected by environmental and human-induced changes in the south-western GBM Delta.

Key drivers include:

Climate and Environmental Drivers

  • Sea-level rise

  • Changes in river discharge

  • Reservoir management

  • Cyclones

  • Land subsidence

Human-Induced Changes

  • Channel deepening

  • Land reclamation

  • Altered tidal dynamics

The researcher will develop future scenarios together with project partners and assess their impacts on freshwater availability and salinity dynamics.


Numerical Modelling and Hydrodynamic Analysis

A major component of the project involves developing and applying a sophisticated:

Delft3D Flexible Mesh (Delft3D-FM) Model

The researcher will:

  • Build and refine a 2D–3D hydrodynamic model

  • Simulate salinity transport processes

  • Evaluate future climate scenarios

  • Analyze circulation and transport mechanisms

Model validation will use both:

  • Existing datasets

  • Newly collected field observations

The research particularly focuses on:

  • Residual circulation effects

  • Salt dispersion mechanisms

  • Tidal dynamics

  • Effects of land reclamation

This work will contribute to improved understanding of estuarine processes in highly complex delta environments.


International Research Collaboration

The project is conducted through a strong international consortium including:

Netherlands

  • Delft University of Technology (TU Delft)

  • Wageningen University & Research (WUR)

  • Deltares

Bangladesh

  • Institute of Water Modelling (IWM)

  • Bangladesh University of Engineering and Technology (BUET)

The project includes collaboration with:

  • Dr. Wouter Kranenburg (TU Delft)

  • Prof. Sara Nowreen (BUET)

  • Prof. Ton Hoitink (WUR)

  • Md. Abdulla Hel Kafi (IWM)

  • Dr. Sepehr Eslami (Deltares)

At least one research visit to Bangladesh is planned during the project.


About the COAST-Water-Solutions Programme

The project forms part of the larger:

COAST-Water-Solutions Programme

A bilateral Netherlands–Bangladesh initiative funded by NWO that aims to develop:

  • Climate-resilient water systems

  • Sustainable water management strategies

  • Salt intrusion solutions

  • Drinking water security

  • Agricultural water availability

The programme integrates:

  • Natural sciences

  • Engineering

  • Social sciences

  • Living Lab approaches

to address long-term challenges in the GBM Delta.


Candidate Requirements

Applicants should possess:

  • A PhD in:

    • Physical Oceanography

    • Hydraulic Engineering

    • Physical Geography

    • Meteorology

    • Physics

    • Mathematics

    • Numerical Modelling

    • Or a closely related field

Candidates should also demonstrate:

Technical Skills

  • Numerical modelling experience

  • Environmental fluid dynamics expertise

  • Hydrodynamic modelling

  • Circulation and transport modelling

Scientific Skills

  • Strong quantitative reasoning

  • Conceptual understanding of physical processes

  • Scientific writing and communication abilities

Personal Skills

  • Teamwork and collaboration

  • Independent research capability

  • Multidisciplinary working experience

Experience in estuarine or coastal modelling is highly desirable.


Salary and Benefits

The position follows the Dutch Universities Collective Labour Agreement and includes:

  • Competitive postdoctoral salary

  • Excellent pension scheme (ABP)

  • Flexible employment package

  • Health insurance discounts

  • Training and professional development opportunities

  • Partially paid parental leave

  • Vitality and wellbeing programmes

Leave Benefits

  • 232 leave hours annually (based on full-time employment)

  • Option to purchase additional leave

The appointment is funded for:

Contract Duration

  • 18 months

Workload

  • 24–38 hours per week

A part-time arrangement (0.6–0.8 FTE) with extended project duration is also possible.


About TU Delft

Founded more than 180 years ago, TU Delft is one of the world's leading technical universities and internationally renowned for its expertise in:

  • Water resources engineering

  • Coastal engineering

  • Climate adaptation

  • Delta technology

  • Hydraulic engineering

The position is hosted within:

Faculty of Civil Engineering and Geosciences (CEG)

The faculty conducts globally recognized research on:

  • Climate change

  • Water systems

  • Delta management

  • Sustainable infrastructure

  • Coastal resilience

The Department of Hydraulic Engineering is one of the leading centers worldwide for estuarine and coastal research.


Application Documents

Applicants should submit:

  • Motivation letter

  • Curriculum Vitae (CV)

  • Master's transcripts

  • PhD thesis (if available)

Candidates shortlisted for interviews will be asked to:

  • Present previous research

  • Discuss ideas relevant to the project


Important Dates

  • Application Deadline: 6 July 2026
  • Expected First Interviews : 9–14 July 2026
  • Location: Delft, Netherlands
  • Research Visit: At least one visit to Bangladesh is anticipated.


Official Application Link



Why This Opportunity Is Important

This postdoctoral position offers a rare opportunity to work on one of the world's most complex and socially relevant coastal systems.

Researchers will gain expertise in:

  • Estuarine hydrodynamics
  • Coastal ocean modelling
  • Climate adaptation
  • Salinity intrusion
  • Delta management
  • International water governance

The project directly addresses global challenges related to climate change, freshwater security, and sustainable development.

For researchers interested in coastal processes, hydraulic engineering, and climate-resilient water systems, this is an exceptional opportunity to make a tangible scientific and societal impact.

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