Primary Plant Technician - Suurjänniteasentaja

About the role

We are looking for an experienced Primary Plant Technician (Suurjänniteasentaja) to lead the installation and maintenance of high‑voltage primary plant equipment on substations, solar and wind farms, and battery storage projects across Northern Europe. The role combines hands‑on technical work with supervision of apprentices and field crews.

Key responsibilities

• Install, assemble and maintain power transformers, GIS and AIS switchgear, circuit breakers, disconnectors, instrument transformers and earthing systems.
• Perform mechanical assembly, oil filling, vacuum treatment, leak testing and related commissioning activities following manufacturer instructions.
• Ensure compliance with HSE procedures, RAMS, permit‑to‑work systems and local electrical regulations.
• Read and interpret general arrangement drawings, mechanical drawings, single‑line diagrams and manufacturer manuals.
• Produce daily reports, inspection records, checklists and quality documentation.
• Collaborate with commissioning, engineering, civil, logistics and project teams, and support apprentices on site.

Required profile

• Minimum 3 years of hands‑on experience in high‑voltage or substation environments, with a proven record of transformer installation.
• Relevant certifications in electrical fitting, HV systems or transformer installation are highly desirable.
• Strong problem‑solving ability and familiarity with safety protocols in HV settings.

Required skills

• High‑voltage transformer installation and commissioning.
• GIS and AIS equipment assembly.
• Oil filling, vacuum treatment and leak testing.
• Reading electrical schematics, single‑line diagrams and mechanical drawings.
• Application of HSE procedures, RAMS and permit‑to‑work systems.