High Voltage Electrical Technician
Spark Power, a trusted partner in energy in North America, is looking for a High Voltage Electrical Technician.

The High Voltage Electrician / Technician is responsible for the installation, testing, commissioning, maintenance, and repair of high voltage electrical systems (typically 5kV to 44kV+) including substations, transformers, switchgear, and transmission/distribution infrastructure.

This role requires specialized expertise in energized and de-energized high voltage environments, strict adherence to utility and safety standards, and experience with testing and protection systems.

What will you do you as a High Voltage Electrical Technician?
Install, maintain, and repair high voltage equipment including power transformers, breakers and switchgear, protection and control systems including Bus systems and disconnects (distribution)
Perform acceptance testing, commissioning, and diagnostics on HV equipment, including: (Megger) (TTR), Power factor, relay protection testing
Execute planned emergency maintenance distribution and transmission systems
Interpret and work from: single line diagrams, protection and control schematics and relay coordination studies
Familiar with Electrical lockout/Tag out procedure and have Electrical Safety Awareness
Travel frequently to remote substations and project sites
Work extended hours during outages, including nights/weekends
Familiar with testing different types of high voltage and low voltage equipment.

Report, record, compute and process electrical test information in accordance with accepted standard practices
Perform switching, isolation, grounding, and lockout/tagout (LOTO) procedures in high voltage environments




Support and execute energization and de-energization procedures Business acumen; Demonstrates an understanding of business operations and priorities, using this knowledge to make informed decisions that support organizational goals.

Demonstrates the ability to plan, organize, and prioritize tasks effectively to ensure timely and accurate completion of work.

Demonstrates an understanding of business operations and priorities, using this knowledge to make informed decisions that support organizational goals.

Work in substations, generation facilities, and industrial HV environments
Lead or support outage planning and execution
Mentor apprentices and junior technicians in HV procedures and safety practices
Spark Power Employee Benefits and Perks: Competitive wages
Excellent benefit package (Medical, Dental, Vision, Extended Health, Disability) and wellness spending account option
RRSP
Career advancement and mentorship opportunities
Diverse and exciting industrial, commercial and institutional projects and customer base
Continuous training and skills improvement
Paid uniforms
Paid tooling plus up to $200 annual tool allowance
….and much more
Do you have the Spark? Here's what we're looking for: Knowledge/Experience of performing HV/MV Circuit Breaker Timing Tests
Robust understanding of high voltage systems and power distribution theory




Advanced troubleshooting of HV systems
Ability to interpret complex electrical schematics and relay logic
High attention to safety, detail, and procedural compliance
Strong decision-making in high-risk environments
Ability to work under pressure during outages or critical failures
Valid 309A Electrical License (or Powerline Technician / equivalent preferred depending on scope)
5–10+ years of experience in high voltage,
utility / substation work
Experience with testing and commissioning HV equipment (major differentiator)
Working knowledge of: Ontario Electrical Code (OEC) and Utility standards and operating procedures
Valid driver's license with clean abstract
Utility or EPC project experience
DZ License
Auto-cad experience
Who is Spark Power?
Spark Power is the leading independent provider of end-to-end electrical services and operations and maintenance services to the industrial, utility, and renewable asset markets in North America.

We work to earn the right to be our customers' Trusted Partner in Power™.

Our highly skilled and dedicated people, located in the communities we serve, combined with our knowledge of the power industry, technology expertise, and commitment to safety, ensures we deliver the right solutions that keep our customers' operations up and running today and better equipped for tomorrow.

Spark Power welcomes and encourages applications from people with disabilities.

Accommodations are available on request for candidates taking part in all aspects of the selection process.

Artificial intelligence tools may be used to support parts of the recruitment and selection process, including application screening

📌 HV Electrical Technician (London)
🏢 Spark Power
📍 London