ASSYSTEM

Engineering services for design, construction, commissioning

Electrical and Instrumentation Design Engineer

Controls & Automation EngineeringConfirmed live in the last 24 hours

ContractBengaluru, Karnataka, IndiaNo salary listedIn-person

About the Job

Requirements

A bachelor's degree in Electrical or Instrumentation Engineering is required.
Five to twelve years of experience in water or wastewater infrastructure projects is required.
Knowledge of relevant IEC, IS, and IEEE standards is required.
Experience with AutoCAD, EPLAN, ETAP, or Dialux is required.
Experience with PLC systems, including Siemens, Allen Bradley, or Schneider, and SCADA systems is required.
Strong knowledge of pumping systems is desired.
Understanding of water and wastewater treatment processes is desired.
Knowledge of energy-efficient systems is desired.
Analytical and problem-solving skills are desired.
Communication and documentation skills are desired.

Responsibilities

Prepare electrical load calculations and power distribution schemes.
Design high-tension and low-tension systems, transformer sizing, substation layouts, diesel generator sizing and synchronization schemes, power and control cable sizing, single-line diagrams, earthing and lightning protection systems, and illumination and small-power layouts.
Prepare bills of quantities and technical specifications, and review and approve vendor drawings.
Design electrical systems for vertical turbine, submersible, and horizontal centrifugal pumps at raw-water, clear-water, and sewage pumping stations.
Select motors and define control philosophies, including direct-on-line, star-delta, soft-starter, and variable-frequency-drive controls.
Design motor control center and power control center panels, programmable-logic-controller-based systems, and supervisory-control-and-data-acquisition integration for remote monitoring.
Design level control, flow measurement, pressure monitoring, surge protection, interlocking, and standby power systems for pumping stations.
Design power distribution and instrumentation for water treatment plant equipment, including clarifiers, flash mixers, flocculators, rapid sand filters, and sludge handling systems.
Design instrumentation for pH, turbidity, chlorine, flow, pressure, and level measurement in water treatment plants.
Develop programmable-logic-controller and supervisory-control-and-data-acquisition architectures and document control philosophies.
Prepare field instrument layouts, cable routing, instrument indexes, input/output lists, cable schedules, loop diagrams, panel general-arrangement drawings, and wiring diagrams.
Design electrical systems for sewage treatment plant equipment, including aeration blowers, sequencing-batch-reactor and moving-bed-biofilm-reactor systems, return-activated-sludge and waste-activated-sludge pumps, sludge dewatering units, and decanters.
Perform hazardous-area classification where applicable; design gas detection, dissolved-oxygen and mixed-liquor-suspended-solids monitoring, motorized-valve and actuator controls, and centralized supervisory-control-and-data-acquisition integration.
Design energy-efficient systems using variable-frequency-drive-based control.
Design electrical and instrumentation systems for flow-monitoring stations, pressure-monitoring stations, and district-metering areas; design remote terminal units, telemetry, solar-powered instrumentation where applicable, and booster-pumping-station control panels; coordinate cathodic protection when required.
Prepare single-line diagrams, control schematics, instrument hook-up drawings, cable-tray layouts, earthing and lighting layouts, bills of quantities and cost estimates, technical specifications, factory-acceptance-test and site-acceptance-test documentation, and as-built drawings.
Coordinate with civil, mechanical, and process teams, as well as clients and consultants.
Attend technical meetings, conduct site visits, support commissioning, and participate in vendor inspections and factory acceptance testing.

Job Description

Job Title: Electrical & Instrumentation (E&I) Design Engineer

Industry: Water Supply & Sewerage Infrastructure
Department: Engineering / Design
Reports To: Project Manager / Lead E&I Engineer

Job Summary

The Electrical & Instrumentation (E&I) Design Engineer is responsible for detailed engineering, design, and coordination of electrical and instrumentation systems for water supply, sewerage networks, pumping stations, Water Treatment Plants (WTP), and Sewage Treatment Plants (STP). The role includes preparation of design documents, drawings, BOQs, technical specifications, vendor coordination, and support during execution and commissioning.

Key Responsibilities

1. Electrical Design – General

Prepare electrical load calculations and power distribution schemes
Design HT/LT systems (11kV/33kV/415V as applicable)
Transformer sizing and substation layout design
Diesel Generator (DG) sizing and synchronization schemes
Cable sizing calculations (power & control cables)
Preparation of Single Line Diagrams (SLD)
Earthing and lightning protection system design
Illumination and small power layout
Preparation of BOQ and technical specifications
Vendor drawing review and approval

2. Pumping Stations (Raw Water / Clear Water / Sewage)

Design of electrical systems for:
- Vertical turbine pumps
- Submersible pumps
- Horizontal centrifugal pumps
Motor selection and control philosophy (DOL, Star-Delta, Soft Starter, VFD)
MCC & PCC panel design
PLC-based control system design
SCADA integration for remote monitoring
Design of:
- Level control systems (ultrasonic, pressure transmitters)
- Flow measurement (magnetic flow meters)
- Pressure monitoring systems
Surge protection and interlocking schemes
Design of standby power systems

3. Water Treatment Plant (WTP) – E&I Design Activities

Power distribution design for:
- Clarifiers
- Flash mixers
- Flocculators
- Rapid sand filters
- Sludge handling systems
Instrumentation design for:
- pH analyzers
- Turbidity meters
- Chlorine analyzers
- Flow meters (Raw water, treated water, backwash lines)
- Pressure transmitters
- Level transmitters
PLC & SCADA architecture development
Control philosophy documentation
Field instrument layout and cable routing
Preparation of:
- Instrument index
- I/O list
- Cable schedule
- Loop diagrams
Panel GA drawings and wiring diagrams

4. Sewage Treatment Plant (STP) – E&I Design Activities

Electrical design for:
- Aeration blowers
- SBR/MBBR systems
- RAS/WAS pumps
- Sludge dewatering units
- Decanters
Hazardous area classification (where applicable)
Gas detection systems (H₂S, methane)
DO (Dissolved Oxygen) monitoring systems
MLSS monitoring systems
Motorized valves and actuator control
Integration with centralized SCADA system
Energy-efficient system design (VFD-based control)

5. Pipe Network & Distribution System

Electrical & instrumentation design for:
- Flow monitoring stations
- Pressure monitoring stations
- District Metering Areas (DMA)
Remote Terminal Units (RTUs) design
Telemetry system design
Solar-powered instrumentation (where applicable)
Cathodic protection coordination (if required)
Control panel design for booster pumping stations

Documentation & Deliverables

Single Line Diagram (SLD)
Control Schematics
Instrument Hook-up Drawings
Cable Tray Layout
Earthing Layout
Lighting Layout
BOQ & Cost Estimation
Technical Specifications
FAT & SAT Documentation
As-built drawings

Coordination Responsibilities

Coordinate with:
- Civil team (for foundation & equipment layout)
- Mechanical team (pump & equipment data)
- Process team (treatment philosophy)
- Client & consultants
Attend technical meetings
Site visits and commissioning support
Vendor inspections & FAT participation

Desired Skills

Strong knowledge of pumping systems
Understanding of water & wastewater treatment processes
Knowledge of energy-efficient systems
Analytical & problem-solving skills
Good communication & documentation skills

Performance Indicators (KPIs)

Timely submission of design deliverables
Accuracy in BOQ and load calculations
Zero major design revisions
Smooth commissioning support
Compliance with project specifications

Qualifications

Required Qualifications

Bachelor’s Degree in Electrical / Instrumentation Engineering
5–12 years experience in Water / Wastewater infrastructure projects
Knowledge of relevant standards (IEC, IS, IEEE)
Experience in AutoCAD / EPLAN / ETAP / Dialux
Experience in PLC (Siemens/Allen Bradley/Schneider) & SCADA systems

Additional Information

**Security clearance**

This role requires the successful candidate to hold a minimum of a Security Check (SC) clearance without any caveats to that clearance.

Due to the nature of work this role will be delivering and for the protection of certain assets, the successful candidate has to be a UK national or in MoD approved cases a Dual National from a non-ITAR country.

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.

About the Company

ASSYSTEM

Engineering services for design, construction, commissioning

Assystem provides engineering services for complex projects, covering design, construction, supervision, commissioning, and operation, with a strong focus on the nuclear and energy sectors. Its approach combines multidisciplinary engineering teams and project-management capabilities to move projects from initial concept through to operation. The company differentiates itself through a long track record, strategic acquisitions (including Alphatem in 1995 and Mactech Energy Group in 2025) and an early public offering in 2013, which have expanded its capabilities and market reach in the energy and nuclear fields. Its goal is to be a leading, reliable partner for clients by delivering end-to-end engineering services and helping them meet safety, performance, and regulatory requirements across the project lifecycle.

Company size: 5,001-10,000
Company stage: IPO
Headquarters: Paris, France
Founded: 1966

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