Senior HVAC Service Technician

Data centers are at the heart of the rapidly growing digital and AI economy, and this is an opportunity to be part of that growth. Johnson Controls is supporting exciting data center projects across Finland, where you’ll help deliver the critical HVAC infrastructure these facilities depend on. You’ll work closely with site teams and stakeholders, solve real technical challenges, and develop highly relevant expertise in one of today’s fastest-growing sectors.

What you will do

As Senior HVAC Service Technician, you will lead the service, maintenance, troubleshooting, and repair of chiller and HVAC systems across customer sites in Finland. Working on industrial, data center, and retrofit projects, you will play an important role in ensuring equipment reliability, performance, and customer satisfaction.

You will work closely with customers and technical teams to diagnose issues, perform maintenance activities, and support the efficient operation of critical HVAC systems. Experience with commissioning activities is considered an advantage.

Key Responsibilities

Perform preventive and corrective maintenance on chillers and HVAC equipment. Diagnose and troubleshoot refrigeration, mechanical, electrical, and controls-related issues. Carry out repairs, component replacements, upgrades, and retrofit activities. Identify required spare parts and support parts selection and replacement planning.

Record operating parameters and maintain accurate service documentation and reports. Support equipment start-up and commissioning activities when required. Coordinate technical issues with engineering, product, and service teams. Ensure all work is carried out in accordance with company safety standards and Finnish/EU regulations.

Build strong customer relationships through high-quality service and technical support. What we look for Required Solid hands-on experience servicing HVAC and chiller systems. Good understanding of refrigeration systems, compressors, heat exchangers, pumps, controls, and associated HVAC equipment. Ability to read and interpret mechanical, electrical, and control drawings.

Strong troubleshooting and fault-finding skills. Ability to work independently at customer sites while maintaining a strong safety mindset. Good English communication and service reporting skills. Preferred Experience with large air-cooled and/or water-cooled chillers. Experience supporting data centers, industrial facilities, or other mission-critical environments.

Relevant F-Gas certification or the ability to obtain it. Previous commissioning or start-up experience of HVAC equipment. Knowledge of chiller spare parts, component identification, and maintenance planning. Basic electrical and controls troubleshooting capability. Technical diploma or certification in HVAC, Refrigeration, Mechanical Engineering, or a related field.

Finnish language skills. Why Join Us This is an exciting opportunity to build your career in the rapidly growing data center sector and contribute to the critical infrastructure supporting AI and the digital economy. You’ll join a technically focused, collaborative environment where quality matters, your expertise is valued, and your work has a direct impact on delivering reliable solutions for our customers.

If you’re ready to take the next step in your career and be part of a sector shaping the future, we’d love to hear from you.