Senior Civil Design Engineer
Trant Engineering Ltd
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Job summary
Trant Engineering Ltd in Southampton is seeking a Senior Civil Design Engineer to lead multi-disciplinary civil design on UK water projects, covering water treatment, distribution, wastewater, and flood defence. This role sits in the IDS team and requires delivering designs to Eurocodes and client specifications.
You will report to the Head of Discipline - Civil, manage design interfaces, and mentor engineers while contributing to framework projects across the UK water sector.
Qualifications
- Significant Civil design experience in UK water/wastewater projects.
- Registration with a recognised UK institution (CEng/IEng) is preferred.
- Strong knowledge of civil design standards and software tools.
- Proficient in MS Office and design collaboration.
Responsibilities
- Lead civil design delivery for water projects within IDS.
- Coordinate multi-disciplinary interfaces to ensure compliant, integrated designs.
- Provide technical guidance and mentorship to junior engineers.
Skills
Education
Tools
Job description
Application Deadline: 18 December 2026
Department: Civil
Employment Type: Permanent - Full Time
Location: Southampton
Reporting To: Trevor Mossop
Join Trant Engineering and help shape the delivery of complex, high-impact projects.
Trant Engineering is a leading EPC contractor with a strong reputation for delivering innovative engineering solutions across the UK and internationally. With over 1,000 employees and a £150m turnover and due to continued success and new Framework awards, we are looking to strengthen our Engineering Team with the appointment of a Civil Design Engineer.
IDS, Trant’s internal design team, are involved in all phases of the project lifecycle from feasibility studies through to detailed design and construction support and are instrumental in providing technical support across the business as a whole.
The Role
The ideal candidate will have a background in Civil Engineering and will be joining our multidisciplined Innovation, Design & Solutions (IDS) department working on the design of projects covering, but not limited to the following:
- Water treatment
- Water distribution and storage
- Wastewater recycling
- Flood Defence
The Senior Civil Design Engineer will report to the Head of Discipline - Civil as part of a multi-disciplined team of engineers working primarily on Trant’s UK Water Industry Frameworks. They will manage multi-discipline design interfaces and integration of the Civil design elements to deliver fit-for-purpose engineering solutions and lead tasks on a major project or lead several projects of moderate scope with complex features.
- Independently applies extensive and diverse knowledge of engineering principles and practices across broad areas of assignments and related fields.
- Modifies or extends accepted theories and practices to complete complex assignments.
- Demonstrates professional attitudes such as creativity, curiosity, flexibility, and dependability.
- Actively promotes consideration of sustainability principles throughout the design lifecycle.
- Keeps informed of updates to standards, regulations, and best practices.
- Interpret, understand & challenge project requirements from Client documents (project scope of work, drawings, specifications, correspondence, etc.).
- Attend Client sites as required to undertake condition surveys of existing processes, structures and assets, and promoting further opportunities to enhance Client relationships.
- Be responsible for development of the following Civil detail design deliverables to facilitate the delivery of the project to Eurocodes and industry/Client specifications:
- Survey specifications/datasheets (E.g. Topographical, Ground Penetrating Radar, Structural, Ground Investigation etc.).
- Design calculations (E.g. Concrete, steel, hydraulic, foundation, temporary works, etc.).
- Design sketches/drawings using the AutoCAD AEC software collection (E.g. Slabs, structures, buried assets, chambers, access pavements, site layouts etc.).
- Design schedules, buildability statements, design risk assessment, reports, etc.).
- A comprehensive understanding of other discipline requirements and interactions required to deliver a unified and complete design solution.
- Compliance with OHSA and regulations, ISO and the ability to interpret and take onboard other international safety standards.
- Maintain a knowledge base and keep up to date with new methods, products and developments affecting the civil and water engineering disciplines and recommend new practices or changes in application.
- Collaborate closely with internal teams, clients, external design partners and subcontractors to develop and deliver innovative, compliant solutions.
- Proactively drive a H&S focus throughout the design process and subsequent delivery phase, instigating development of design risk assessments to address risks identified during review activities.
- Identify and elevate all instances of design change throughout the project lifecycle.
- Undertake technical bid evaluations, subcontractor/supplier design reviews and integrate compliant outputs into the design development process.
- Work with the Civil Design Manager to monitor design effort against budget, schedule and quality requirements.
- Provide technical support and guidance to site teams during installation/commissioning.
- Develop & review project documentation for compliance with relevant Client & UK water industry standards, regulations and Company QA processes.
- Manage the project specific design interfaces with Clients, external consultants, subcontractors and suppliers.
- Promote technical excellence and innovation within the team, contributing to the development of new design methodologies and tools.
- Present and defend engineering solutions to complex problems in a client/stakeholder facing environment.
- Excellent written and verbal communications skills along with a high level of computer literacy.
- Lead, mentor, and develop junior team members, fostering a culture of continuous improvement and knowledge sharing.
Upholds and promotes the Company’s Core Values – Care, Trust, Respect and Sustainability.
This role is suited to technically strong, commercially aware candidates with a background in Civil engineering in the water industry, or in other closely related industries. Ideally, you would be able to demonstrate the following qualifications, skills/knowledge and behaviours:
- CEng/IEng registration with a recognised UK Institution (e.g. ICE).
- BSc/MSc qualification in Civil Engineering discipline.
- Significant experience delivering multi-disciplined engineering projects in the UK water/wastewater industry, focusing on water & wastewater treatment plants and pumping stations.
- Broad knowledge of industry standards, legislation and engineering principles.
- Capable of managing and prioritising multiple projects in a dynamic environment.
- Be fully conversant with the Microsoft Office suite of products.
- Committed to continuous professional development.
- We do not expect candidates to be able to tick all these boxes! Enthusiasm, attitude and practical experience is far more important than specific skills or professional qualifications.
At Trant Engineering, we deliver complex, high-value engineering and construction projects across the UK. From process and water treatment to energy infrastructure upgrades, we play a key role in delivering and protecting critical national infrastructure – shaping the systems that communities and industries rely on every day.
Our teams design and deliver full EPC solutions, combining technical excellence with practical, hands‑on delivery. We offer end-to-end capabilities – from concept and design through to manufacturing, construction and commissioning utilising a continually evolving in-house expertise. This means you’ll work on projects that are varied, challenging and genuinely impactful.
Our multi-disciplinary teams bring together specialists in civil, mechanical, electrical, process, instrumentation, and control & automation engineering, alongside our in-house manufacturing of control panels, MCCs, PLCs and SCADA systems. With over 1,000 people and a strong, growing pipeline of work, it’s an exciting time to join Trant. We are committed to helping our people succeed through our Career Development Association, providing structured support, mentoring and clear pathways to help you reach your full potential.
Whether you’re starting out or looking to take your next career step, Trant offers the chance to develop, progress and make a real difference.
Our company benefits package includes.
- Competitive salary.
- Company car or car allowance.
- Mentored support within our ‘Career Development Association’, to work towards chartership.
- 24 days holiday (increasing with service) + 8 bank holidays.
- Options to buy additional holiday via salary sacrifice.
- Company Pension Scheme.
- Private Healthcare Insurance.
- Flexible working based on a ‘core hours’ system.
- 1 x Professional Membership paid annually.
- Hybrid working.
- Employee Assistance Program.
- Free onsite parking.
- Bike to Work Scheme.
- Annual bonus Scheme.
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