Field Service Technician - EU WIDE

NES Fircroft; Madrid; On-site; EUR 42,000 - 64,000; Full time

Job summary

NES Fircroft is seeking a Field Service Engineer to lead complex service operations across multiple data center locations. The role involves extensive travel (4–6 weeks at a time) followed by a rotation home, with a focus on power systems, relay testing and troubleshooting.

You will mentor junior staff and act as a technical expert in the field. The ideal candidate has hands-on experience with switchgear, transformers and other electrical equipment and is able to operate and interpret results

Qualifications

• Experience in field service roles involving power systems and electrical testing.
• Hands-on experience with switchgear, transformers and related equipment.
• Willingness and ability to travel for extended periods (4–6 weeks) with rotations home.

Responsibilities

• Lead and perform complex field service operations and troubleshooting tasks.
• Apply engineering methods to modify customer drawings and schematics.
• Conduct relay testing (electro-mechanical and solid-state) and PLC programming read/write.
• Test low/medium voltage circuit breakers and perform utility system analysis.
• Operate test equipment and supervise on-site activities ensuring safety and standards.
• Mentor junior associates and serve as technical SME in key areas.
• Work with and troubleshoot, install, commission switchgear, transformers and other power delivery equipment.

Skills

Power systems troubleshooting

Electrical testing

Field service excellence

Travel willingness

Tools

Relay test sets

Megger

Hipot

Phase rotation meters

Job description

Job Summary: We are seeking a highly skilled and experienced Field Service Engineerto lead complex service operations across multiple data center locations. This role involves extensive travel (4–6 weeks at a time) followed by a scheduled rotation home. The ideal candidate will have a strong background in power systems, relay testing, and troubleshooting, with the ability to mentor junior staff and act as a technical expert in the field.

Key Responsibilities:

• Lead and perform complex field service operations and troubleshooting tasks.
• Apply engineering methods to modify and redline customer drawings and schematics.
• Conduct relay testing (electro-mechanical and solid-state), PLC programming (read/write), and testing of low and medium voltage circuit breakers.
• Perform CT testing, SF6 gas testing, and utility paralleling system analysis.
• Operate and interpret results from test equipment such as relay test sets, power factor testers, Hipot, Megger, phase rotation meters, and voltage/current meters.
• Supervise on-site activities and ensure compliance with safety and technical standards.
• Mentor and provide technical guidance to junior associates.
• Serve as a subject matter expert in specific technical areas.
• Work with and troubleshoot,install, comissionswitchgear, transformers, and other power deliveryequipment.

Qualifications:

• Strong analytical and problem-solving skills.
• Proven experience in field service roles involving power systems and electrical testing.
• Hands-on experience with switchgear, transformers, and other electrical equipment
• Willingness and ability to travel for extended periods (4–6 weeks) with scheduled rotations home.