Primary Electrical / Substation Design Engineer

Sisco Jobs; Tiruchirappalli; On-site; INR 3,500,000 - 6,000,000; Full time

Job summary

Sisco Jobs is recruiting for a Primary Electrical / Substation Design Engineer in Trichy, Tamil Nadu. The role focuses on developing and independently checking primary electrical designs for high‑voltage substations and grid connections for a UK grid infrastructure programme.

You will prepare design basis documents, equipment layouts, and perform insulation coordination, earthing and protection system interfaces, while coordinating with multi-disciplinary teams and vendors.

Qualifications

• HV Substation primary design deliverables ownership and checking.
• AIS/GIS substations experience at 400/220/132/33 kV.
• Plant equipment selection, rating and specification.
• Demonstrated clearance and insulation coordination
• Knowledge of earthing and lightning protection concepts for HV systems.

Responsibilities

• Prepare design basis documents, SLDs, layouts, sections and specifications.
• Perform calculations for clearances, insulation coordination and equipment ratings.
• Develop primary design inputs for earthing and lightning protection.
• Prepare data schedules for transformers, switchgear, CTs/VTs and HV plant.
• Coordinate interfaces with protection/control, SCADA, civil/structural and BIM teams.
• Review supplier drawings and incorporate approved vendor data.
• Produce and check calculations, reports and construction details.
• Support design reviews, procurement, construction, testing and commissioning.

Skills

HV Substation Primary Design

AIS/GIS Engineering

HV Plant Engineering

Clearances & Insulation Coordination

Earthing & Lightning Protection

Education

Bachelor’s degree in Electrical Engineering

Tools

MicroStation

Job description

Primary Electrical / Substation Design Engineer

Tiruchirappalli, India | Posted on 22/08/2026

We are Sisco Jobs, a recruitment consultancy based in Trichy, Tamil Nadu. We are hiring on behalf of our client for the position of Primary Electrical / Substation Design Engineer in Trichy, Tamil Nadu. Our client is a reputed organization supporting the Energy, Utilities & Infrastructure sector and is seeking skilled, motivated professionals. If you meet the requirements below,

The role will develop and independently check primary electrical designs for high-voltage substations and grid connections supporting a UK grid infrastructure programme, covering the full lifecycle from design basis and equipment selection through calculations, specifications, layouts and construction-ready deliverables.

Key Responsibilities

• Prepare design basis documents, SLDs, key-line diagrams, substation layouts, sections, equipment arrangements and technical specifications.
  
• Perform electrical-clearance, insulation-coordination, equipment-rating and busbar/conductor-selection calculations and assessments.
  
• Develop primary design inputs for substation earthing and lightning-protection systems.
  
• Prepare technical requirements and data schedules for transformers/reactors, switchgear, CTs/VTs, surge arresters, disconnectors, earth switches and associated HV plant.
  
• Coordinate primary-design interfaces with protection/control, SCADA, cables, civil/structural, earthing, auxiliary supplies and BIM/CAD teams.
  
• Review supplier drawings and technical data, resolve technical queries and incorporate approved vendor information into designs.
  
• Produce and independently check calculations, reports, schedules, material take-offs and construction details while applying controlled checking, revision and change-management procedures.
  
• Support design and safety reviews, procurement, construction, testing and commissioning activities as required.
  

Required Skills

• HV Substation Primary Design — Hands-on authorship and checking of primary engineering deliverables for high-voltage substations.
  
• AIS/GIS Engineering — Practical capability with AIS and/or GIS substations at 400/220/132/33 kV.
  
• HV Plant Engineering — Selection, rating and specification of transformers/reactors, switchgear, instrument transformers and associated plant.
  
• Clearances & Insulation Coordination — Ability to demonstrate safe electrical clearances and undertake insulation-coordination activities.
  
• Earthing & Lightning Protection — Strong understanding of primary-design requirements and interfaces for earthing and lightning protection.
  

Preferred Skills

• Experience with 220 kV and 400 kV substation design.
  
• Familiarity with MicroStation and review of 3D/BIM models.
  
• Working knowledge of IEC standards and relevant BS/EN/ENA engineering guidance for UK grid projects.
  

Work Experience Requirements

Minimum 10+ years of relevant professional experience, with substantial hands‑on responsibility for primary/substation engineering deliverables. Experience must include high‑voltage power, transmission, substations, utilities or directly comparable critical infrastructure.

Candidates must demonstrate 132 kV or above design experience, with 220/400 kV capability preferred, and clearly distinguish personally authored or independently checked design work from site, review or commissioning exposure.

Education

Minimum: Bachelor’s degree in Electrical Engineering

Additional: Relevant professional registration is advantageous