Principal Design Engineer - Underground Cables

Vinci; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Omexom in the United Kingdom seeks an experienced Design Lead for HV/EHV underground cable systems. You will provide technical leadership, oversee 33kV+ design packages, and maintain internal standards while ensuring compliance with regulatory requirements.

You will conduct advanced analyses using CYMCAP, ELEK, and AutoCAD, lead peer reviews, and mentor junior engineers. A Chartered Engineer status or progress toward chartership is preferred, with strong communication and collaboration skills.

Qualifications

• Degree in Electrical Engineering; MSc/MEng advantageous.
• Chartered Engineer status or pursuing chartership with relevant experience.
• Extensive HV/EHV underground cable system design experience (132kV+).
• Proficiency in CYMCAP, ELEK, AutoCAD; MATLAB knowledge beneficial.
• Strong leadership, mentoring, and communication skills.
• Knowledge of UK/international standards and regulatory frameworks.

Responsibilities

• Act as technical lead across HV/EHV cable design activities ensuring safety, robustness, compliance and cost-effectiveness.
• Oversee complex cable design packages (33kV and above) from concept to detailed design.
• Develop and maintain internal design standards, templates, and tools for HV/EHV systems.
• Ensure design deliverables meet industry standards and regulatory requirements.
• Perform and supervise analyses including thermal, electrical, ampacity, and mechanical stress assessments using CYMCAP, ELEK, and AutoCAD.
• Lead peer reviews, quality checks, and design audits; mentor junior engineers.
• Promote new technologies and continuous improvement in the cable design discipline.
• Interface with Heads of Design, Client representatives, and internal teams.

Skills

Leadership

Technical excellence

Communication

Mentoring

Education

Bachelor in Electrical Engineering

MSc/MEng preferred

Chartered Engineer status or in progress

Tools

CYMCAP

ELEK

AutoCAD

MATLAB

Job description

To provide technical leadership and expert-level design input for underground high-voltage (HV) and extra-high-voltage (EHV) cable systems across major infrastructure projects. The role combines deep engineering knowledge with strategic oversight of design practices, acting as a senior authority on cable system design, compliance, and innovation., Including but not limited to:

• Act as a technical lead across HV/EHV cable system design activities, ensuringsolutions are safe, robust, compliant, and cost-effective.
• Oversee complex cable design packages (33kV and above), ensuring technicalexcellence across concept, feasibility, and detailed design phases.
• Develop, own, and assist with maintain internal design standards, methodologies, templates, andtools relevant to HV/EHV cable systems.
• Ensure all design deliverables meet industry standards, regulatory requirements, and company best practices.
• Perform and supervise detailed analyses including thermal, electrical, ampacity, and mechanical stress assessments using tools such as CYMCAP, ELEK, and AutoCAD.
• Lead technical peer reviews, quality checks, and design audits to maintain a highstandard of engineering output.
• Support the development of junior engineers through guidance, feedback, and training in best practice design techniques.
• Promote new technologies, design methods, and continuous improvement within the cable design discipline.
• Participate in professional forums and maintain up-to-date knowledge of industry trends through organisations such as IET, CIGRÉ, and IEEE., The Design Planner will maintain strong relationships and typically interface with:
• Heads of Design
• Design Managers
• Lead Design Engineers
• Client representatives
• Supplier representatives
• Operations Engineers and Site teams
• Technical Managers
• Internal Design Teams The successful candidate will demonstrate high levels of technical competence, leadership, and a passion for delivering safe and innovative engineering solutions. They will be able to work independently whilst enjoy being part of a friendly, ambitious and growing team., A degree in Electrical Engineering or a related discipline; a Master's degree (MSc/MEng) is advantageous.
• Chartered Engineer (CEng) status, or actively working towards chartership with significant relevant experience.
• Extensive and demonstrable experience in HV/EHV underground cable system design, ideally including work at 132kV and above.
• Strong working knowledge of cable selection, route design, installation techniques, accessories, thermal and electrical performance, and compliance standards.
• Advanced proficiency in CYMCAP, ELEK, and AutoCAD; familiarity with additional tools such as MATLAB is beneficial.
• Demonstrated ability to lead complex engineering calculations, simulations, and system assessments.
• Proven experience in technical leadership, including mentoring and team development.
• Excellent verbal and written communication skills, with the ability to convey complex technical concepts clearly and confidently.
• Membership of professional institutions (e.g. IET, CIGRÉ, IEEE) is highly desirable.
• Experience working in multidisciplinary project environments within the energy transmission or infrastructure sectors.
• Knowledge of international and UK cable standards and regulatory frameworks.
• Ability to challenge and improve existing practices through a proactive, innovation-driven mindset.

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Values

In line with Omexom's values, the jobholder must possess the following qualities: Team Spirit & Generosity - able to work effectively within and contribute to the Omexom team to deliver results, provide support and drive performance. Trust and Empowerment - enjoy managing their responsibilities and time to ensure work is completed efficiently and professionally. Integrity and Responsibility - enjoy taking responsibility for their duties and managing these effectively to ensure efficient high quality results. Innovation & Entrepreneurship - continually strive to improve processes and introduce new initiatives to improve efficiency.