Job Summary
The Diaphragm Wall Engineer will plan, coordinate, supervise, and monitor diaphragm wall construction activities, ensuring that excavation, slurry support, reinforcement installation, joint preparation, and concrete placement are carried out in accordance with approved engineering designs, project specifications, and quality and safety requirements.
The role requires practical expertise in diaphragm wall construction methods, bentonite or polymer slurry systems, trench stability, reinforcement cage installation, and tremie concreting.
Key Responsibilities
Construction Planning and Execution
- Review engineering drawings, geotechnical reports, method statements, and project specifications.
- Plan daily diaphragm wall construction activities and coordinate labour, equipment, materials, and subcontractors.
- Supervise guide wall construction, trench excavation, panel sequencing, and joint preparation.
- Monitor excavation depth, trench alignment, verticality, and stability.
- Coordinate excavation teams, slurry plant operators, reinforcement crews, and concrete suppliers.
- Monitor construction progress and report delays or technical challenges.
- Recommend corrective actions to improve productivity and construction quality.
Slurry Management and Trench Stability
- Coordinate the preparation, circulation, testing, treatment, and recycling of bentonite or polymer slurry.
- Ensure slurry properties meet project requirements throughout excavation.
- Monitor trench stability and ensure appropriate slurry support procedures are followed.
- Coordinate desanding and slurry treatment operations.
- Investigate slurry-related problems and implement corrective measures with relevant specialists.
Reinforcement and Concreting
- Supervise reinforcement cage preparation, lifting, installation, and positioning.
- Verify cage dimensions, reinforcement cover, joint details, and installation requirements.
- Coordinate tremie pipe installation and concrete placement.
- Monitor concrete delivery, placement continuity, and relevant quality records.
- Ensure construction activities are documented and comply with approved procedures.
Quality Assurance and Technical Compliance
- Coordinate inspections and testing with the QA/QC team.
- Verify panel dimensions, excavation records, slurry test results, reinforcement details, and concrete records.
- Ensure non-conformances are documented and resolved.
- Support required integrity testing and other specified quality assessments.
- Maintain accurate panel-by-panel construction records.
Equipment and Site Coordination
- Coordinate the availability of diaphragm wall grabs, trench cutters, cranes, slurry plants, pumps, and associated equipment.
- Work with plant engineers to minimise downtime.
- Monitor resource utilisation and identify opportunities to improve productivity.
- Ensure safe equipment movement and lifting operations.
Health, Safety, and Environmental Compliance
- Enforce site safety procedures and environmental requirements.
- Participate in risk assessments, toolbox talks, and site inspections.
- Ensure excavation, lifting, and slurry management activities follow approved safety procedures.
- Report incidents, unsafe conditions, and environmental concerns promptly.
Reporting and Coordination
- Prepare daily production reports, technical records, and progress updates.
- Maintain excavation, slurry, reinforcement, and concrete placement records.
- Liaise with project management, consultants, surveyors, geotechnical teams, and other site personnel.
Key Performance Indicators (KPIs)
- Compliance with diaphragm wall design and construction specifications.
- Panel completion rates against project schedules.
- Excavation alignment, verticality, and dimensional accuracy.
- Slurry testing compliance and trench stability performance.
- Quality of reinforcement installation and concrete placement.
- Equipment utilisation and operational efficiency.
- Timely resolution of technical issues and non-conformances.
- Compliance with HSE requirements and reporting deadlines.
Qualifications and Experience
- B.Sc., B.Eng., or HND in Civil Engineering, Geotechnical Engineering, or a related discipline.
- Minimum of five years\' relevant experience in diaphragm wall construction, deep foundations, or geotechnical engineering.
- Practical experience in trench excavation, slurry systems, reinforcement cage installation, and tremie concreting.
- Experience with bored piling, ground improvement, or marine foundation works is an advantage.
- Relevant professional memberships and technical certifications are an advantage.
Required Skills and Competencies
- Strong understanding of diaphragm wall construction techniques.
- Knowledge of slurry-supported excavation and trench stability.
- Ability to interpret technical drawings and construction specifications.
- Strong site supervision, planning, and coordination skills.
- Technical problem-solving and decision-making abilities.
- Effective communication and reporting.
- Ability to work under pressure and on remote sites.
- Willingness to work in Lagos and be deployed to project sites anywhere across Nigeria.
Preferred candidate markets include:
Thailand, Philippines, Indonesia, India, Vietnam, Bangladesh, Pakistan, Sri Lanka, Nepal, Egypt, and other countries with strong relevant industry experience
Candidates must possess practical, verifiable experience relevant to the specific position and be willing to work in Nigeria.
Work Location and Conditions
- Primary location: Lagos, Nigeria.
- Project deployment: Any state across Nigeria, including remote project locations.
- Work arrangement: Fully on-site; not hybrid or remote.
- Working days: Monday to Saturday.
- Working hours: Project-based, depending on site requirements.
- Work authorisation: Applicable Nigerian immigration and work permit requirements must be met.
Candidates must possess practical, verifiable experience relevant to the specific position and be willing to work in Nigeria.
Work Location and Conditions
- Primary location: Lagos, Nigeria.
- Project deployment: Any state across Nigeria, including remote project locations.
- Work arrangement: Fully on-site; not hybrid or remote.
- Working days: Monday to Saturday.
- Working hours: Project-based, depending on site requirements.
- Probationary period: Six months.
- Annual vacation: 10 days.
- Work authorisation: Applicable Nigerian immigration and work permit requirements must be met.
Candidates must be prepared to travel, relocate between project sites, and work under the conditions associated with active foundation engineering and construction projects.
Additional Benefits
- Accommodation support.
- Transportation support.
- Work permit assistance where applicable.
- Project-related allowances.
- Medical support in line with company policy.
- Career progression and leadership opportunities.
- Exposure to major infrastructure and foundation engineering projects.
- Technical development and professional certification support where applicable.
Application Instructions
Interested and qualified expatriate candidates should submit an updated CV indicating:
- The specific position being applied for.
- Nationality and current location.
- Relevant years of experience.
- Technical specialisation and relevant qualifications.
- Major piling, diaphragm wall, deep foundation, or geotechnical projects undertaken.
- Equipment operated or maintained, where applicable.
- Relevant professional memberships, trade qualifications, OEM training, or operator certifications.
- Availability to resume.
- Willingness to work in Lagos and be deployed anywhere across Nigeria.
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