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Open nowPosted 5 days ago

Technical Lead (Charging & Mediation)

teliacompany3 open roles

Where
Vilnius
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Your applicationOpen nowTechnical Lead (Charging & Mediation)teliacompany · Vilnius

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The clock on this job

Early applications get read.

13.3% of postings close within 7 days. Measured by our own scanner across the market. teliacompany postings stay open a median of 15 days.

Share of postings closed within
  1. 2.1%1 day
  2. 4.6%3 days
  3. 13.3%7 days
  4. 21.3%14 days
  5. 35.7%30 days
  6. 59.1%60 days
This job: posted 5 days ago

teliacompany median: 15 days open

The posting

We’re looking for a Technical Lead (Charging & Mediation) to join us at Telia Lithuania.

Want to take the next step in your engineering leadership journey and make a real impact where IT meets the network? I'm Saulius Stepanauskas, and I'm looking for a curious, hands-on technologist ready to leave a lasting mark. Join our Charging & Mediation team in Technology, where your technical leadership will shape the systems behind every call, data session and payment on our network – and together, let's make better happen!

What you’ll do:

Provide technical leadership for our Charging & Mediation domain – the backend IT systems that sit right next to the mobile network and turn network usage into rated, charged and billed services. Our team owns online and offline charging, mediation and the payment gateway for data, voice, SMS and VoLTE services across all access technologies – from 2G/3G and 4G/LTE to 5G Non-Standalone and 5G Standalone. You'll work closely with engineers, core network specialists, vendors and product owners to evolve our architecture, improve reliability and simplify complexity.

We're looking for someone with deep hands-on experience in the telco environment – someone who understands how mobile networks evolved from 2G to 5G Standalone and what each generation means for charging, mediation and other IT backend systems.

Your key areas of responsibility include:

  • Own and evolve the technical architecture of our charging, mediation and payment gateway platforms.
  • Lead the integration between IT and network domains – charging interfaces (Diameter Gy/Ro/Rf, 5G CHF/Nchf), CDR/EDR flows and network element integrations.
  • Drive the 5G Standalone and service-based architecture (SBA) roadmap on the IT side, while keeping legacy 2G/3G/4G services stable until their decommissioning.
  • Lead architectural decisions and long-term platform evolution, including vendor platform upgrades and cloud-native modernization.
  • Act as the senior technical escalation point for the most complex production, performance and revenue-impacting incidents.
  • Improve reliability, observability, security and revenue assurance of real-time, business-critical systems.
  • Be the technical counterpart to vendors and partners – evaluate solutions, review designs and hold suppliers to high technical standards.
  • Partner with engineers to reduce technical debt, simplify existing systems and grow the team's technical competence.
  • Work with Product Owners and the Engineering Manager to balance technical sustainability with business delivery.

What will help you thrive in this role:

An experienced telco IT engineer or architect with a passion for building and evolving large-scale, real-time backend systems.

Key qualifications include:

  • 5+ years of experience building, integrating or operating telco BSS/OSS systems – ideally in charging (OCS/CCS/CHF), mediation, rating or billing.
  • Solid understanding of mobile network architecture from 2G to 5G SA (CS core, GPRS/EPC, IMS, 5GC) and how it affects IT backend systems.
  • Hands-on knowledge of 3GPP charging principles and protocols – Diameter (Gy, Ro, Rf), CAMEL, CDR formats and 5G Nchf (HTTP/2-based SBA) interfaces.
  • Strong understanding of distributed systems, high availability, concurrency, performance and observability in real-time, high-throughput environments.
  • Experience evolving large systems through incremental modernization rather than large rewrites, including vendor-delivered platforms.
  • Sound technical solution evaluation and the ability to make pragmatic technical trade-offs.
  • Experience influencing technical direction across teams, vendors and stakeholders.
  • Passion for simple, maintainable solutions and for helping others grow.
  • Experience using AI-assisted development and operations tools effectively while maintaining high engineering standards.
  • Fluent English; Lithuanian is an advantage.

Nice to have:

  • Experience with payment gateway / carrier billing solutions, or with VoLTE/VoNR and IMS service charging.
  • Experience with cloud-native and container platforms (Kubernetes, OpenShift), CI/CD and infrastructure-as-code.
  • Working knowledge of Linux, SQL, scripting (Python, Bash) and messaging/streaming platforms (e.g. Kafka).

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 Top Employer and Sustainability 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

At Telia, we care about your well-being, growth, and sense of belonging:

  • Additional health insurance and pension plans
  • Workation: work from anywhere in the EU for up to 30 days per year
  • Extra vacation days based on tenure (up to 5 additional days)
  • Discounts on Telia services, including free home internet
  • Partner offers and discounts (SPA, cafes, events)
  • Telia Kids Club: summer camps for employees’ children
  • Company-supported sports activities (yoga, basketball, running)
  • Internal training, leadership programs and job shadowing to explore new roles

…and more.

Monthly salary range for this position – 4320-6480 Eur (gross) + annual performance bonuses. Although it may vary depending on your skills and experience.

Ready to make better happen?

We look forward to receiving your application by November 30, 2026. Please note that we might close the position earlier if we find the right candidate, so don’t wait too long to apply!

If you’re selected for the next stage, you’ll be contacted by our Talent Acquisition Partner. Background and reference checks will be part of the process.

Want to know more about this role? Please reach out to Saulius Stepanauskas at [email protected]

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.

Join us and let’s make better happen - together!

More about our culture: www.telia.lt/karjera

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