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Earthworks Construction Specialist (Flood Resilience)

Groundwater Relief
Full-time
On-site
Country: South Sudan
Organization: Groundwater Relief
Closing date: 22 Dec 2025

Summary

Groundwater Relief is seeking an experienced geotechnical engineer to deploy to two counties in South Sudan for a 4 week period between February 2026 and March 2026. The individual will be supporting the International Organization for Migration to review the implementation of Arup design plans for flood dyke (embankment) construction.

About the Project

The International Organization for Migration (IOM), as part of the Enhancing Community Resilience and Local Governance Project (ECRP-II), is implementing flood risk reduction infrastructure in South Sudan. This includes the construction of resilient dykes to protect vulnerable communities from recurring floods, along with other infrastructure such as raised road crossings and culverts. The project aims to improve existing emergency dyke practices by introducing robust engineering approaches adapted to local constraints.

Role Purpose

The purpose of the role is to undertake a review of the implementation practices and quality of the flood dyke (embankment) construction being undertaken. In reference to the design guidance documentation and drawings, the 4-week role will allow the earthworks specialist to undertake a productive audit and review of quality control of the dyke construction in challenging environments. The role requires travel to two rural locations (either Kodoc, Rubkona, Twic East - TBC) within South Sudan together with the GWR Project Coordinator.

The role will involve working closely with Arup, a subconsultant to GWR, who have prepared the design documentation. A collaborative approach is expected with the IOM Disaster Risk Management team and site engineers who are overseeing the construction.

The site visits will be timed close to the start of construction, so that any corrective actions can be identified and applied during completion of the works.

Key Responsibilities

Design Review

The site visits are intended to allow the Earthworks Construction Specialist to review how effectively the construction team are implementing the design guidance documentation to ensure long term resilience of the dykes. Review will include, but not limited to:

  • Effectiveness of staged methodology, as per the Basis of Design report.
  • Management of dewatering operations and borrow pit planning.
  • Site preparation, vegetation removal, benching, and fill placement.
  • Are the correct side slopes (1V:4H) being achieved.
  • Approach to validation of crest levels using historical flood marks and temporary benchmarks.
  • Applying geotechnical principles for compaction such as control layer thickness (approx. 300 mm), moisture conditioning, and compaction passes.

Erosion control measures such as vetiver grass planting.

Quality control

The IOM construction teams are expected to carefully document their construction approach and the relevant testing to ensure conformance with the Basis of Design documents. The Earthworks Construction Specialist is expected to review this documentation and site procedures and where necessary, collaborate with and assist the local construction teams to develop effective quality control procedures such as

  • Checking for embankment geometry, and slope compliance.
  • Checking compaction effort such as using field checks (wheel-track observations) and adjusting methods as needed.
  • Conduct earthworks trials and pilot tests where feasible.

Communication

The successful candidate is expected to be an excellent communicator. Daily check-ins will be arranged with the Arup Design Team and a daily observation report will be required. The Earthworks Construction Specialist must be able to understand the requirements of the technical reports and drawings as well as technical instructions provided by the design engineering team. There is expected to be an element of capacity building such as ‘on-the-job’ training of IOM’s site teams and contractors on best practices for compaction, moisture conditioning, and erosion prevention.

Reporting:

  • Prepare daily site records.
  • Communicate progress and challenges to IOM, project stakeholders and the Arup Design Team.

Complete a construction quality report for both sites at the end of the 4 week duration.

Contextual challenges for construction activities

  • Remote locations: Sites are in isolated areas with limited infrastructure and access, often requiring long travel on unpaved roads, and/or via the White Nile, for transport of construction plant and materials.
  • Seasonal constraints: Construction activities are usually scheduled during the dry season (January to June, depending on the location) to minimise impacts of flooding and soft ground conditions.
  • Logistical limitations: Availability of heavy compaction equipment may be restricted; pragmatic solutions using available plant (e.g., excavator tracking) may be necessary.
  • Material constraints: Dyke construction relies on locally available soils, predominantly Black Cotton Soils, which present challenges such as shrink-swell behaviour and cracking.
  • Security and safety: Fieldwork will require adherence to IOM security protocols and health and safety standards. Local transport and accommodation. Accompanied by GWR experienced project coordinator
  • Long term resilience of infrastructure: Deviations from design and quality control can significantly increase flood risk and maintenance liabilities.

Qualifications & Experience

  • Degree in Geotechnical Engineering, Civil Engineering, or related discipline.
  • Minimum 5 years’ experience in earthworks and geotechnical construction, including:
    • Dyke or levee construction in flood-prone environments.
    • Working with expansive clays (Black Cotton Soils) and understanding shrink-swell behaviour.
    • Compaction techniques and moisture-density relationships.
  • Prior experience in South Sudan or similar environments is highly desirable.
  • Familiarity with international standards (e.g., BS5930, USACE levee guidelines) and ability to adapt them pragmatically to local constraints.

Skills & Attributes

  • Strong practical knowledge of earthworks and compaction equipment (rollers, excavators, bulldozers).
  • Ability to develop context-appropriate solutions under logistical constraints.
  • Competence in setting out works using survey equipment (dumpy level, total station).
  • Excellent problem-solving and communication skills.
  • Commitment to safety and resilience in design and construction.

Desirable Expertise

  • This role requires hands-on expertise in earthworks, compaction, and quality assurance, with a strong understanding of Black Cotton Soils (BCS) and the ability to guide pragmatic solutions that improve current practices.
  • Advantage to have experience with simple reinforced concrete works (eg culverts)
  • Knowledge of soil improvement techniques (lime/murram stabilization).
  • Experience with erosion control and nature-based solutions (e.g., vetiver grass).
  • Understanding of adaptive design approaches.

How to apply

Please email, putting P207 Earthworks Specialist in the subject line, your CV and expression of interest to hr@groundwater-relief.org by 09:00 am GMT, Monday 22nd December 2025.

Your application should consist of a covering letter, which includes a personal statement detailing why you are suitable for this position with reference to the role and essential experience (no longer than 2 pages), your CV, and the details of two referees. The referees will only be contacted if you are selected for the position.

It is envisaged that interviews will be held w/c 5th January 2026.

If you have any questions about the role, please contact hr@groundwater-relief.org.

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