Senior Software Engineer

Tele2; Stockholms kommun; Hybrid; SEK 800,000 - 1,100,000; Full time

Benefits offered by this job

Pension

Health care

Hybrid work

Career opportunities

Parental benefit

Tele2 discounts

Inclusive workplace

Job summary

Tele2 is seeking a Senior Software Engineer to own and evolve core performance systems that handle large-scale telemetry and statistics from networks. You will influence architecture, drive reliability, and mentor the team in a Linux-based, containerized environment with Go and/or Java.

The role focuses on design, performance, and scalability while adopting modern engineering practices, including AI-assisted tooling, to accelerate development.

Qualifications

• Several years of professional software development experience.
• Strong hands-on experience in Go and/or Java.
• Solid understanding of Linux-based systems.
• Experience with Git-based CI/CD pipelines.
• Experience working with containerized environments (Docker/Kubernetes).
• Experience with Kafka or other event-driven architectures.
• Experience in designing scalable backend systems.

Responsibilities

• Design, develop and evolve backend services in Go and/or Java.
• Improve and optimize high-throughput data processing pipelines.
• Drive best practices around CI/CD, testing and engineering quality.
• Operate and troubleshoot systems in production.
• Collaborate with architects, analysts and network stakeholders.
• Contribute to long-term system design and modernization initiatives.

Skills

Go

Java

Linux

Git CI/CD

Docker/Kubernetes

Kafka

System design

Networking basics

Tools

Docker

Kubernetes

Job description

At Tele2, we challenge the telecom industry to create more valuable solutions for our customers. Guided by our challenger mindset, we deliver high-quality connectivity and digital services, ranging from mobile and fixed networks to TV, streaming and global IoT.

Sustainability is an integral part of how we work. Tele2 has been recognized as a climate leader in Europe by the Financial Times and named Sweden’s most sustainable company, reflecting our long-term commitment to reducing our environmental impact and advancing circular solutions together with our customers.

Our values – Be Brave, Take Action, Make it Simple and Act Cost-efficiently – guide our culture, how we collaborate and how we turn ideas into action.

Ready to take technical ownership of systems that process some of Sweden’s largest data volumes and explore how AI can transform operations?

At Tele2, Digital Capabilities & Technology (DCT) is the engine behind our mobile and fixed networks. Within Network Data, our Performance Management team builds and operates the in-house systems that collect, process and analyze performance data across all network domains.

We are now looking for a Senior Software Engineer who wants to play a key role in evolving and modernizing our core performance systems.

About The Team

You will join a highly technical team of software engineers responsible for Tele2’s Performance Management platform. We collect and process large-scale telemetry and statistics from mobile and fixed networks, transforming raw data into insights that drive operational and strategic decisions. We are currently evolving our architecture and we actively embrace modern engineering practices, including AI-assisted development tools, to accelerate how we design, build, and maintain our software. This means you will have real influence over architecture, technical direction and ways of working.

About The Role

This is not a junior position. We are looking for someone who can:

• Take technical ownership of critical services
• Contribute to system design and architectural decisions
• Improve performance, scalability and reliability
• Mentor and elevate the engineering standards of the team

You will work in a Linux-based, containerized environment handling high-volume data streams and backend services.

Your responsibilities

• Design, develop and evolve backend services in Go and/or Java
• Improve and optimize high-throughput data processing pipelines
• Drive best practices around CI/CD, testing and engineering quality
• Operate and troubleshoot systems in production
• Collaborate with architects, analysts and network stakeholders
• Contribute to long-term system design and modernization initiatives

Participation in on-call rotation may be part of the role.

What We Are Looking For

We believe you have:

• Several years of professional software development experience
• Strong hands-on experience in Go and/or Java
• Solid understanding of Linux-based systems
• Experience with Git-based CI/CD pipelines
• Experience working with containerized environments (Docker/Kubernetes)
• Experience with Kafka or other event-driven architectures
• Experience in designing scalable backend systems
• Understanding of networking fundamentals

It is a strong plus if you have experience with:

• Ansible or infrastructure automation
• System design in high-availability environments
• Performance optimization of large-scale data processing
• Observability tooling (Prometheus, Grafana, ELK)

Who You Are

You are a curious and hands-on software engineer who thinks beyond your own code. You enjoy understanding how systems fit together, experimenting with new technology and turning ideas into reliable software.

You communicate clearly, collaborate without prestige and take ownership of what you build.

You make complex systems understandable to others through clear documentation, code reviews and shared technical decisions. You actively spread knowledge and build solutions that more than one person can operate and evolve.

Why this role matters

Our systems are central to how Tele2 monitors and improves network performance. We are now exploring how AI and automation can transform the way NOC and other operational teams work with network data.

This is an opportunity to:

• Shape the architecture of systems in a critical and complex domain
• Work with high-volume, real-world network data
• Build and evolve critical systems using real-world data
• Work across software engineering, data, AI and network operations
• Have visible impact across the organization

Benefits

• Pension and health care
• Hybrid and flexible work life balance
• Career opportunities
• Parental benefit
• Employee benefits and Tele2 discounts
• Inclusive workplace