Data Center Technician L3

Milestone Technologies, Inc.; Mikkeli; Hybrid; EUR 48,000 - 75,000; Full time

Job summary

Milestone Technologies, Inc. is seeking a Data Center Technician III to support one of our strategic AI infrastructure customers in Finland.

The role covers deployment, commissioning, and ongoing operation within a mission-critical data center environment. You will work alongside customer engineering teams, facilities personnel, and Milestone leadership, performing complex installation, maintenance, and troubleshooting across enterprise server, storage, and networking infrastructure, with

Qualifications

• Minimum 4–6 years of experience in data center operations or equivalent.
• Experience deploying and supporting mission-critical production environments.
• Strong hands-on hardware installation, lifecycle management, and break/fix activities.
• Experience with enterprise networking and CLI-based troubleshooting.
• Familiarity with DCIM, ITSM, and asset-management platforms.

Responsibilities

• Install, rack, cable, and commission enterprise server, storage, networking, and supporting infrastructure.
• Diagnose and resolve Layer 1–3 infrastructure issues in compute, storage, and networking.
• Configure networking equipment using CLI tools and support AI/HPC environments.
• Mentor Technician II, support operational readiness, and contribute to process documentation.

Skills

Data center operations

Troubleshooting

Networking

Server hardware installation

Structured cabling

Documentation

Team leadership

Tools

DCIM

ServiceNow

Jira

NetBox

Sunbird

Job description

Milestone Technologies is a global IT services and digital transformation company delivering managed services and professional solutions to many of the world’s most innovative organizations. We are seeking an experienced Data Center Technician III to support one of our strategic AI infrastructure customers as they continue expanding next-generation data center operations throughout Finland.

This position offers the opportunity to work within a rapidly growing AI infrastructure environment supporting advanced compute platforms, high-density deployments, and mission-critical operations.

Position Summary

The Data Center Technician III is an experienced, hands-on technical professional responsible for supporting the deployment, commissioning, and ongoing operation of advanced AI infrastructure within a mission-critical data center environment.

Working alongside customer engineering teams, facilities personnel, vendors, and Milestone leadership, this individual performs complex installation, maintenance, troubleshooting, and operational support activities across enterprise server, storage, networking, and supporting infrastructure.

The Technician III also serves as a senior technical resource within the local operations team by mentoring junior technicians, supporting operational readiness, and assisting with the continuous improvement of operational processes and documentation.

Employment Type

Permanent Full-Time (Finland)

This position is based in Mikkeli, Finland, supporting long-term customer operations.

Employment will be provided in accordance with applicable Finnish employment legislation, applicable Collective Agreements (TES) where required, and Milestone Technologies employment policies.

Professional proficiency in English is required. Finnish language skills are considered beneficial but are not required.

Key Responsibilities

Infrastructure Deployment

• Install, rack, cable, and commission enterprise server, storage, networking, and supporting infrastructure.
• Perform structured copper and fiber cabling installations while maintaining high standards for labeling and cable management.
• Support infrastructure validation, equipment acceptance testing, operational readiness reviews, and commissioning activities.
• Assist with data center expansions, hardware refreshes, migrations, and infrastructure lifecycle projects.

Technical Operations

• Install, configure, troubleshoot, repair, and maintain enterprise server, storage, and networking hardware.
• Diagnose and resolve Layer 1–3 infrastructure issues involving compute, networking, structured cabling, and supporting systems.
• Configure and troubleshoot enterprise networking equipment using CLI tools.
• Support AI, GPU, HPC, and high-density compute environments, including liquid-cooled infrastructure where applicable.
• Participate in preventive maintenance activities, hardware replacement, and break/fix support.

Operational Excellence

• Execute operational procedures including SOPs, MOPs, and EOPs.
• Maintain accurate asset, inventory, and configuration records using DCIM and ITSM platforms.
• Participate in change management, incident response, and operational documentation.
• Identify opportunities to improve operational efficiency, documentation, and technical processes.
• Support continuous improvement initiatives across the data center operation.

Team Collaboration

• Serve as a technical resource and escalation point for complex operational issues.
• Mentor Technician II team members through technical guidance and knowledge sharing.
• Collaborate closely with customer engineering, facilities personnel, vendors, and cross-functional operations teams.
• Promote a culture focused on safety, teamwork, operational excellence, and customer service.

Required Qualifications

Language

• Professional proficiency in English (written and verbal)
• Finnish language skills (written and verbal)

Technical Skills

• Strong hands-on experience supporting enterprise server, storage, networking, and structured cabling infrastructure.
• Experience supporting mission-critical production environments.
• Strong understanding of enterprise hardware installation and break/fix activities.
• Experience configuring and troubleshooting enterprise networking platforms using CLI tools.
• Working knowledge of Linux operating systems and command-line administration.
• Understanding of Layer 2/3 networking fundamentals including VLANs, DNS, DHCP, and routing concepts.
• Experience with DCIM, ITSM, and asset management platforms such as ServiceNow, Jira, NetBox, Sunbird, or equivalent.
• Ability to interpret rack elevations, floor plans, network diagrams, and technical documentation.
• Strong organizational skills with exceptional attention to detail.
• Excellent troubleshooting, communication, and documentation skills.

Required Experience

Minimum 4–6 years of experience in one or more of the following:

• Data Center Operations
• Infrastructure Engineering
• Telecommunications Infrastructure
• Critical Facilities
• Industrial Automation
• Manufacturing Operations
• Utilities or Power Generation
• Defense Infrastructure
• Maritime Engineering
• Mission-Critical Operations

Candidates should also possess experience in:

• Enterprise hardware installation and lifecycle management.
• Rack and stack activities and structured cabling.
• Large-scale infrastructure deployments, commissioning, or migration projects.
• Linux administration and enterprise networking.
• Ticketing, incident management, and operational change processes.
• Supporting production environments requiring high availability and operational discipline.

Preferred Qualifications

Experience with one or more of the following is highly desirable:

• AI, GPU, or High-Performance Computing (HPC) environments
• Liquid-cooled infrastructure
• PXE provisioning and network-based deployment technologies
• Infrastructure automation using Python, Bash, Ansible, or PowerShell
• Building Management Systems (BMS)
• DCIM platforms
• Infrastructure monitoring and observability tools
• ISO 27001, SOC 2, PCI-DSS, or comparable operational compliance frameworks

Preferred Certifications

• CompTIA Server+
• CompTIA Network+
• CompTIA Linux+
• Cisco CCNA
• Juniper JNCIA
• ITIL Foundation
• Schneider Electric Data Center Certifications
• Uptime Institute Certifications

Equivalent military experience, technical training, and relevant industry certifications will also be considered.

Work Schedule

This position supports a 24x7 mission-critical environment and may require:

• Participation in an on-call rotation
• Planned after-hours maintenance
• Weekend support when required ability to install and service equipment within server racks, overhead cable pathways, under raised flooring systems, and in mechanical and electrical infrastructure areas.
• Ability to safely work in active operational, commissioning, and construction environments while adhering to all applicable health and safety requirements.
• Ability to wear required personal protective equipment (PPE) and comply with all site safety and security policies.
• Ability to participate in an on-call rotation and respond to operational incidents outside of normal business hours when required.
• Ability to travel occasionally within Finland and other Nordic or European customer locations as business needs require.

Work schedules and any overtime arrangements will be administered in accordance with applicable Finnish labor legislation and employment agreements.

Physical & Operational Requirements

• Ability to safely lift, move, and install equipment weighing up to 23 kg (50 lbs), with or without reasonable accommodation.
• Ability to work on the data center floor for extended periods, including standing, walking, bending, kneeling, and climbing ladders as required.
• Ability to install and service equipment within server racks, overhead cable pathways, under raised flooring systems, and in mechanical and electrical infrastructure areas.
• Ability to safely work in active operational, commissioning, and construction environments while adhering to all applicable health and safety requirements.
• Ability to wear required personal protective equipment (PPE) and comply with all site safety and security policies.
• Ability to participate in an on-call rotation and respond to operational incidents outside of normal business hours when required.
• Ability to travel occasionally within Finland and other Nordic or European customer locations as business needs require.