System Administrator | Infrastructure & Cloud

Hi3G Access AB; Stockholms kommun; On-site; SEK 550,000 - 750,000; Full time

Job summary

HI3G Access AB in Stockholm is seeking a System Administrator to operate, develop, and secure our infrastructure, spanning cloud and on-premises.

You will handle incidents, maintenance, configuration changes, and work on automation using PowerShell, Bash, and Python. A strong focus on security and Active Directory/Azure is essential. Collaborate with IT and security teams to keep services stable and ready for the future.

Qualifications

• Several years of experience as a System Administrator or in a similar role.
• Solid knowledge of Microsoft AD, Azure, and Microsoft products and services.
• Fluent in English; knowledge of Swedish is a plus.
• Experience with networking, Linux, and storage is advantageous.

Responsibilities

• Operate, develop, and secure the infrastructure behind Tre, in cloud and on-premises.
• Handle incidents, maintenance, and configuration changes with hands-on involvement.
• Utilise automation, scripting, and AI to streamline management and troubleshooting.
• Act as a technical point of contact for IT and security teams across Tre.
• Contribute to shaping a new area and role, laying foundations for the future.

Skills

Automation

Security

Incident management

Team collaboration

Education

Bachelor's degree in IT or related field

Tools

PowerShell

Bash

Python

Microsoft Active Directory

Azure

Windows Server

Networking

Linux

Storage systems

Job description

System Administrator | Infrastructure & Cloud

HI3G Access AB

Kommun: Stockholm

Do you want to help keep the infrastructure behind Tre stable, secure, and ready for what’s next? As a System Administrator, you’ll play an important role in operating, developing, and securing the infrastructure services that keep our organization running, both in the cloud and on-premises. Here, you’ll combine deep technical expertise with problem-solving, automation, and security in an environment where technology truly makes a difference. About the role In this role, you’ll help ensure that our infrastructure is stable, secure, and available both in day-to-day operations and when the unexpected happens. You’ll work hands-on with incidents, maintenance, and configuration changes, making sure our services work seamlessly together. When an alert goes off or an incident occurs, you’ll be part of troubleshooting and resolving the issue, helping us get back on track quickly.

We’re always looking for smarter ways to work. That’s why automation, scripting, and AI are a natural part of the role. You’ll use tools and languages such as PowerShell, Bash, and Python to streamline management and configuration, automate repetitive tasks, and make troubleshooting faster and more effective.

Security is at the heart of the role. You’ll work with everything from access management, patching, and Windows Server hardening to protecting our Active Directory environment. This includes reviewing privileged accounts, managing delegated permissions, and identifying and preventing risks and attacks against our directory services.

Together with colleagues across IT, security, and the wider business, you’ll help build a robust and secure technical environment that enables Tre to keep moving forward. In short, this is a role where you can put your technical curiosity to work: building, improving, and securing the infrastructure behind a business that keeps Sweden connected.

You can look forward to…

• Combine operational work with long-term development. You’ll handle ongoing requests through our ticketing system while also having the opportunity to drive and contribute to development initiatives.
• Act as a technical point of contact for other teams across Tre, providing support and guidance on our infrastructure services and helping colleagues find the right solutions.
• Help shape a new area and a new role, with the opportunity to influence how we work and establish the foundations for the future.
• Be part of one of Sweden’s best workplaces – yes, we’ve been recognized as a Great Place to Work several years in a row!

Here’s how hiring manager Thomas describes his leadership style: “For me, it’s important to be a trusting and coaching leader who leads by clear example. I believe in a pragmatic leadership style where I give the team the space and trust to use their technical expertise, while providing clarity and the right conditions for them to succeed.”

Who are you? To succeed in this role, we’re looking for someone with several years of experience as a System Administrator or in a similar role, preferably combined with a relevant university or higher education degree.

You have solid knowledge of Microsoft AD, Azure, and Microsoft products and services, and you are fluent in English. Knowledge of Swedish is a plus. Experience with networking, Linux, and storage is also an advantage.

We’re looking for someone who combines strong technical expertise with a solution-oriented mindset and enjoys both maintaining and developing our IT infrastructure. You’re self-driven and take ownership, while also enjoying working as part of a team and supporting your colleagues. You’re not afraid to challenge existing ways of working, think differently, and find smarter solutions.

You’re detail-oriented and understand the importance of considering decisions and their potential consequences, particularly when changes may impact other parts of the organization. At the same time, you’re pragmatic and know when it’s time to turn ideas into action.

The position may be filled before the application deadline.

Background checks are carried out on the final candidate.

Tre

HI3G Access AB