Domain Architect

Nokia

Domain Architect responsible for integrating and customizing Nokia solutions and platforms in Portugal. Focuses on performance assessment and optimization of network elements.

Posted 6/3/2026full-timeAmadora • 🇵🇹 PortugalMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

PythonSQL

About the role

Key responsibilities & impact

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.

Requirements

What you’ll need

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
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.
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).

Benefits

Comp & perks

Flexible working arrangements and additional flex benefits to support work–life balance
A minimum of 90 days of Maternity and Paternity Leave, with the option to return to work within a year following the birth or adoption of a child (based on eligibility)
Medical and life insurance plan, plus paid sick leave for added security
Meal allowance to support daily needs
Car allowance based on eligibility
Well-being programs to support your mental and physical health
Opportunities to engage with Nokia Employee Resource Groups (NERGs), as well as access to mentors, coaches, and Employee Growth Solutions
A learning culture that promotes continuous personal and professional growth – for your role and beyond

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Hard Skills & Tools

performance assessmentperformance optimizationroot cause analysiscapacity planningdimensioningperformance tuningload handling analysisdata analysisreportingscripting

Soft Skills

collaborationcommunicationtechnical presentations