Nokia

Domain Architect

Nokia  •  Portuguese Republic (Onsite)  •  2 hours ago
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Job Description

The role focuses on performance assessment, optimization, and analysis of PaCo core network elements. The engineer will be responsible for evaluating system performance, identifying bottlenecks, improving KPIs, and ensuring optimal service delivery across various IMS components and deployment models.

  • Perform end-to-end performance assessment and optimization of PaCo network elements.
  • Analyse and interpret KPIs, counters, and logs to identify performance issues and improvement areas.
  • Work on call flows (VoNR,VoLTE/VoWiFi) to troubleshoot and optimize network behaviour.
  • Conduct capacity planning and dimensioning based on traffic trends and forecasts.
  • Perform root cause analysis (RCA) for performance degradation and service issues.
  • Optimize performance for different deployment models (Bare Metal/VNF/CNF)
  • Collaborate with cross-domain teams (IMS Core, SDL etc.) for E2E optimization.
  • Support customer-facing discussions, performance reviews, and technical presentations.
  • Validate performance improvements through testing and benchmarking.

PaCo & Telecom Knowledge:

  • Strong understanding of 3G/4G/5G core network architecture, especially PaCo.
  • Expertise in VoLTE/VoNR call flows, SIP signalling, and session handling
  • Hands-on experience with PaCo nodes such as:
    • SGSN/MME/AMF
    • PGW/SGW/UPF/SMF
    • NRF/NSSF

Performance & Optimization:

  • Strong knowledge of performance counters, KPIs, and SLA metrics
  • Experience in performance tuning, load handling analysis
  • Ability to correlate KPIs across multiple network elements.
  • Understanding of traffic models and network behaviour under load

Data Analysis & Tools:

  • Strong skills in:
    • MS Excel (advanced formulas, pivot tables, charts), MS Access, Power BI etc.
    • Data analysis and reporting
  • Exposure to scripting/tools is a plus (e.g., Python, SQL).
  • Experience with trace analysis tools / packet analysers (e.g., Wireshark)
Advancing connectivity to secure a brighter world.

Nokia is a global leader in connectivity for the AI era. With expertise across fixed, mobile and transport networks, powered by the innovation of Nokia Bell Labs, we’re advancing connectivity to secure a brighter world.



Our recruitment process

We act inclusively and respect the uniqueness of people. Our employment decisions are made regardless of race, color, national or ethnic origin, religion, gender, sexual orientation, gender identity or expression, age, marital status, disability, protected veteran status or other characteristics protected by law. We are committed to a culture of inclusion built upon our core value of respect.

If you’re interested in this role but don’t meet every listed requirement, we still encourage you to apply. Unique backgrounds, perspectives, and experiences enrich our teams, and you may be just the right candidate for this or another opportunity.

The length of the recruitment process may vary depending on the specific role's requirements. We strive to ensure a smooth and inclusive experience for all candidates. Discover more about the recruitment process at Nokia

Nokia

About Nokia

Nokia is a global leader in connectivity for the AI era. With expertise across fixed, mobile, and transport networks, powered by the innovation of Nokia Bell Labs, we’re advancing connectivity to secure a brighter world.

Advanced connectivity is key to enable the opportunities of AI – opening new doors for us and our customers. Once known for connecting people, our technology is now essential to connecting intelligence.

Our priority is to deliver superior performance with the trust and security our customers need and we’re a committed innovation partner, shaping the future of connectivity.

For our latest updates, please visit us online www.nokia.com

To view open positions and to apply, please visit: www.nokia.com/careers

Industry
Telecommunications
Company Size
10,000+ employees
Headquarters
Espoo, FI
Year Founded
Unknown
Website
nokia.com
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