Role & seniority: Testing & Commissioning Engineer – HV/EHV Substations (mid–senior level; 5+ years in HV/EHV testing/commissioning or maintenance)

Stack/tools: HV/EHV yard and switchgear; AIS/GIS (220/380/400 kV); circuit breakers, isolators, earthing, CTs/VTs; transformers (integration/energization readiness); protection platforms (ABB/Siemens/GE/Schneider/SEL or equivalent); EHV protection schemes; SCADA/RTU, bay control units, PLCs; SAS, networking, GPS/IRIG-B time sync; documentation tooling for test reports and commissioning plans

Top 3 responsibilities

Lead and execute HV/EHV substation testing & commissioning across complete installations (primary equipment, protection, control, and automation)
Test and commission EHV protection/secondary systems and perform end-to-end, primary/secondary injection, coordination, and verification
Lead energization activities with grid authorities, prepare sequences/checklists, coordinate live-grid switching, and troubleshoot during first energization

Must-have skills

Bachelor’s degree in Electrical Engineering
5+ years in EHV substations (220/380/400 kV) testing & commissioning or maintenance
Hands-on experience with HV/EHV protection schemes, grid energization, and live-grid environments
Proficiency with IEC/IEEE standards and utility procedures; experience with protection relays platforms

Nice-to-haves

Experience with transmission utilities or major EPC contractors
Involvement in fi

Full Description

Job description

Job Location: Saudi Arabia 🔹Job Title Testing & Commissioning Engineer – HV / EHV Substations (Substation Maintenance Engineers with strong testing exposure are encouraged to apply) 🔹 Job Purpose To lead and execute testing and commissioning activities for HV/EHV substations (220 kV / 380 kV / 400 kV), covering primary yard equipment, secondary protection & control systems, substation automation, and grid interface, ensuring safe energization in compliance with utility standards, IEC/IEEE codes, and project specifications. The role requires strong hands-on site experience across complete substation systems, not limited to individual equipment. 🔹 Key Responsibilities

HV / EHV Substation Testing & Commissioning

Execute and lead testing activities across complete substation installations, including

Primary Equipment (HV / EHV Yard & Switchgear)
AIS / GIS systems at 220 kV, 380 kV, and 400 kV
HV/EHV Circuit breakers, isolators, earthing switches
CTs and VTs (ratio, polarity, burden, functional checks)
Busbars, feeders, earthing systems etc…
Power transformers (testing limited to integration, protection interface, and energization readiness)
Ensure correct phasing, interlocking, clearances, earthing continuity, and readiness for first energization of the HV/EHV substation.

EHV Protection, Control & Secondary Systems

Testing and commissioning of EHV protection and control schemes, including

Distance protection (multiple zones)
Line differential protection (PLCC / fiber-based)
Transformer differential protection
Busbar protection schemes
Overcurrent and earth fault protection
Bay control units (BCU) and control panels

Perform

Primary and secondary injection testing
End-to-end protection testing
Trip circuit supervision and interlocking verification
Relay setting verification and coordination
Experience with ABB, Siemens, GE, Schneider, SEL or equivalent EHV protection platforms is mandatory.

Substation Automation, SCADA & Communication

Commissioning of EHV substation automation systems (SAS)
SCADA, RTU, and bay-level communication testing
Signal validation between yard, control room, and remote control centers
Time synchronization (GPS/IRIG-B, SNTP)
Event, disturbance recorder, and SOE verification

Engineer Testing & Commissioning

Top 3 responsibilities

Must-have skills

Nice-to-haves

Full Description

Job description

Execute and lead testing activities across complete substation installations, including

Testing and commissioning of EHV protection and control schemes, including

Perform

Coordinate with

Prepare and review

Compile

Ensure compliance with

Profile description