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Senior RAN (Radio Access Network) Performance Test Engineer

Qualitest -
Bristol

Apply Now

Job details

Qualifications

5G
Performance testing
Analysis skills
Scripting
Computer networking
Telecommunication
Python
4G/LTE

Full job description

Date: 13 May 2026

Company: Qualitest Group

Country/Region: GB

Senior RAN Performance Test Engineer

Location: Bristol, UK (Hybrid/On-site as required/3 days a weeks)
Client: Qualitest

Role Overview

Qualitest is looking for a RAN Performance Test Engineer to support performance validation and optimisation activities across 4G and 5G mobile network environments. The role will focus on executing RAN performance testing, analysing network behaviour under load, and supporting troubleshooting activities using industry-standard tools and methodologies.

This position requires hands-on experience with RAN performance testing, including practical knowledge of Viavi load generators and XCAL MAIS for network analysis and validation.

Key Responsibilities

Execute RAN performance and capacity testing across 4G and 5G network environments
Perform load and stress testing using Viavi load generator tools
Analyse network KPIs, logs, and performance metrics using XCAL MAIS
Support validation of network stability, throughput, latency, and mobility scenarios
Investigate and troubleshoot RAN performance issues and bottlenecks
Work closely with RAN, Core, and integration teams to support issue resolution
Produce detailed test reports, findings, and recommendations
Support continuous improvement of performance test strategies and processes
Participate in test planning, execution, and defect triage activities

Required Skills & Experience

Strong hands-on experience in RAN Performance Testing
Good understanding of 4G/LTE and 5G RAN technologies
Experience using RAN load generators for performance and stress testing
Hands-on experience with Viavi tools
Experience using XCAL MAIS for network analysis and KPI validation
Strong troubleshooting and analytical skills within telecom network environments
Ability to analyse logs, counters, traces, and performance data
Experience working within telecom test or integration environments

Nice to Have

Exposure to end-to-end telecom network testing
Experience working with operators or telecom vendors
Knowledge of mobility, handover, and throughput testing scenarios
Scripting or automation experience (Python/Shell)

Apply Now

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