Secondary Design Engineer (P&C;) – High Voltage Substations
Balfour Beatty Infrastructure India Pvt Ltd. is part of Balfour Beatty PLC; a leading global infrastructure group headquartered in the UK. Our India team works closely with international projects, contributing to the delivery of complex, high-impact infrastructure solutions. We offer a collaborative, structured environment with opportunities to learn, grow, and work on meaningful global projects.

The Secondary Design Engineer – Protection & Control (P&C;) will be responsible for the design, development and review of secondary engineering deliverables for High Voltage (HV) substations, particularly transmission projects at 132 kV, 275 kV and 400 kV voltage levels. The role covers protection, control, metering, interlocking, AC/DC auxiliary systems and substation secondary wiring, working closely with Primary Design, Civil, Telecom, SCADA and other engineering disciplines. The engineer will be responsible for delivering technically accurate and coordinated P&C; designs in accordance with client requirements, applicable standards, project specifications and quality procedures.

Secondary Design – Protection & Control
Develop relay and control panel wiring diagrams, termination diagrams and interface drawings.
Prepare cable schedules, core schedules and secondary wiring schedules.
Develop trip matrix, alarm matrix, interlocking matrix and signal lists as required by the project.
Design and review relay panel, control panel and marshalling/interface arrangements.




Select appropriate protection functions and schemes in accordance with client and project requirements.
Review protection relay requirements, technical data and vendor documentation.
Support protection scheme reviews and technical resolution of design issues.

Prepare and review secondary design drawings, schematics, wiring diagrams, schedules and engineering documentation.
Support engineering activities during tender, detailed design and project delivery stages.
Ensure all P&C; deliverables comply with client requirements, applicable standards and project specifications.
Maintain drawing quality, design consistency and document control throughout the engineering lifecycle.

Coordination & Project Support
Coordinate closely with Primary Design, Civil, SCADA, Telecom and other engineering disciplines.
Interface with project teams, clients, vendors and equipment manufacturers for technical clarifications and design coordination.
Participate in interdisciplinary design reviews and project meetings.
Support technical risk assessments, design reviews and value engineering activities.
Skills & Experience Expected

- Bachelor's or Master's Degree in Electrical Engineering or equivalent relevant discipline.




- 5–10 years of relevant experience in HV Substation Secondary / Protection & Control Design Engineering.
- Experience in preparation and review of protection schematics, control schematics, wiring diagrams, CT/VT circuits, trip circuits, interlocking schemes and cable schedules.
- Experience with AC/DC auxiliary systems, relay panels and control panels.
- Experience in secondary design interfaces with SCADA, Telecom and substation automation systems.
- Experience in both tender engineering and detailed design projects.
- Experience working on UK transmission projects, particularly National Grid and/or SSE projects, is highly preferred.
- Software Skills

AutoCAD 2023 or equivalent AutoCAD experience.
Experience preparing electrical schematics and secondary engineering drawings using CAD tools.
Familiarity with protection relay engineering/vendor software and relevant substation engineering tools is advantageous.
Knowledge of document management and engineering design systems used on large transmission projects is desirable.

Perks, Opportunities & Career Impact
Work on high-impact global transmission and infrastructure projects.
Collaborate with experienced engineering professionals across international markets.
Gain exposure to complex HV substation projects and utility standards.
Be part of a culture that values safety, quality, collaboration, and engineering excellence.

Compensation: Work Mode: 5 Days/Week – Work from Office
Office Location: N1, Balsa Block, 1st Floor B-Wing, Manyata Embassy Tech Park, Nagawara, Bengaluru – 560045

📌 Design engineer cad (Bengaluru)
🏢 Balfour Beatty India
📍 Bengaluru