Network Engineer

Telia Company; Helsinki; On-site; EUR 70,000 - 90,000; Full time

Benefits offered by this job

Remote work opportunities

Bonus potential

Comprehensive benefits package

Job summary

Telia is seeking a Voice Core Network Engineer to join our Finland team. You will maintain, develop and secure Finland's Voice Core services including VoLTE and VoNR, while collaborating with the wider Telia footprint to drive cloud-native telecom transitions.

The role requires hands-on experience in Voice Core, IMS, SIP, Diameter and related protocols, plus scripting and automation skills, English fluency, and a proactive, service-oriented mindset.

Qualifications

• Proven experience in Voice Core, IMS, telecom operations or mobile core network environments.
• Strong knowledge of telecom services and protocols (such as SIP, Diameter and SS7/SIGTRAN), Linux environments, as well as solid understanding of cloud infrastructure and IP domain.
• Ability to troubleshoot complex incidents, analyze logs, traces and signaling flows, and drive problems to resolution across multiple stakeholders.
• Hands-on skills in scripting, automation or operational tooling.
• Fluency in English, written and spoken.

Responsibilities

• Be a key contributor in maintaining, developing and securing Finland's mobile Voice Core services and platforms.
• Operate, maintain and develop Voice Core platforms and services in Finland, including VoLTE, VoNR and Voice Interconnect.
• Create operational improvements, automation capabilities and service quality enhancements through lifecycle management, testing, software upgrades, and modernization activities.
• Consult and collaborate with vendors, architects, developers, operations teams and customer-facing stakeholders to resolve complex service issues.
• Handle incidents, customer complaints, troubleshooting, root-cause investigations and participate in on-call duty supporting critical voice services.

Skills

Voice Core

IMS

SIP

Diameter

SS7/SIGTRAN

Linux

Cloud

IP Networking

Scripting

Job description

We're looking for a Voice Core Network Engineer to join us at Telia. I'm Jurijus Kravcenka, Head of Voice Operations FI LT, and I'm searching for someone ready to grow with us. We're a supportive, forward-thinking team focused on the operations and development of Voice Core services in Finland and Lithuania, while collaborating closely with colleagues across the wider Telia footprint and driving the transition towards the next generation of cloud-native telecom networks.

What you'll do:

• Be a key contributor in maintaining, developing and securing Finland's mobile Voice Core services and platforms.
• Operate, maintain and develop Voice Core platforms and services in Finland, including VoLTE, VoNR and Voice Interconnect.
• Create operational improvements, automation capabilities and service quality enhancements through lifecycle management, testing, software upgrades, and modernization activities.
• Consult and collaborate with vendors, architects, developers, operations teams and customer-facing stakeholders to resolve complex service issues.
• Handle incidents, customer complaints, troubleshooting, root-cause investigations and participate in on-call duty supporting critical voice services.

What will help you thrive in this role:

• You are analytical, service-minded and customer-focused, motivated by solving complex technical challenges and taking ownership of services and outcomes.
• Proven experience in Voice Core, IMS, telecom operations or mobile core network environments.
• Strong knowledge of telecom services and protocols (such as SIP, Diameter and SS7/SIGTRAN), Linux environments, as well as solid understanding of cloud infrastructure and IP domain.
• Ability to troubleshoot complex incidents, analyze logs, traces and signaling flows, and drive problems to resolution across multiple stakeholders.
• Hands-on skills in scripting, automation or operational tooling.
• Fluency in English, written and spoken.

Join us to shape smarter living for people, businesses, and the planet

At Telia, we're a team of 15 000 colleagues across the Nordics and Baltics, passionate about technology and connectivity. As a Leading Telecommunications Operator & Climate Leader, we drive change with large-scale, impactful projects while building a sustainable, inclusive world. Here, you can grow your skills, lead meaningful projects, and thrive in a supportive, diverse environment. Whether you're taking your first step or your next, Telia is a place to grow, belong, and make a real impact.

What we offer

• When you join us, you'll receive a comprehensive benefits package tailored to your local market, opportunities for remote work, and more.
• You'll also have the chance to earn a bonus based on your performance and Telia's results.

Equal opportunities

At Telia, we recognize talent by professional skills and growth potential. We champion diversity, ensuring every individual's needs are met, regardless of disability, gender, age, nationality, sexual orientation, or social status. Together, we're dedicated to fostering an inclusive work environment where your uniqueness is our strength.

Background and reference checks will be part of the process.

This is a fixed-term position until the end of 2027.

If you're selected for the next stage, you'll be contacted by our Talent Acquisition Partner.

Please reach out to Jurijus Kravcenka, Head of Voice Operations FI LT at [e-mail].

Join us and let's make better happen - together! Telia is the home for connected technology that allows generations to thrive, pioneering ways for businesses to become smarter and societies more sustainable. Together, we are making better happen.