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# Avionics System Test Engineer

- **Company:** Sii Uk
- **Location:** Belgium
- **Contract:** Permanent contract
- **Skills:** System Testing, Performance Testing
- **Published:** October 27, 2026
- **Apply:** https://sii-group.com/en-GB/job-application/22348?source=

## About the Role

* Strong foundational knowledge of aerospace systems and their operational principles.
 * Ability to quickly understand and adopt new tools, workflows, and internally developed systems.
 * Resilience and adaptability when working in high-pressure, delivery-focused environments.
 * Advanced data manipulation and analysis capability, particularly using Microsoft Excel.
 * Clear and precise technical communication skills, with a focus on structured reporting.
 * Analytical mindset with exposure to data processing techniques such as signal analysis and mathematical modelling.
 * Programming capability (e.g. Python or similar) for automation, data handling, or analysis is advantageous.

EXPERIENCE:

 * Demonstrated experience within an aerospace or high-integrity engineering environment.
 * Involvement in system verification, validation, or performance testing activities.
 * Background in processing, interpreting, and reporting on engineering data.
 * Practical experience in fault diagnosis, troubleshooting, or investigative engineering tasks.
 * Exposure to integrated system testing or operational test environments is beneficial but not essential.

## Description

We are seeking a highly motivated Systems Test Engineer to contribute to complex aerospace
integration and validation programmes. This position involves working within a multidisciplinary
engineering environment to support ground and flight-based verification activities across critical
aircraft systems. The role offers exposure to cutting-edge testing methodologies, data-driven
engineering, and fast-paced operational delivery., * Execute system-level validation activities across mechanical and fluid-based aircraft
subsystems within a live engineering environment.

 * Support the end-to-end lifecycle of airborne test campaigns, including preparation,
configuration verification, and active participation during test operations.

 * Generate comprehensive and well-structured technical documentation, capturing test results,
observations, and engineering insights.

 * Analyse large datasets obtained from testing activities, applying statistical techniques and
engineering judgement to interpret system behaviours.

 * Investigate anomalies identified during testing, contributing to structured troubleshooting
processes and supporting root cause investigations.

 * Work closely with cross-functional teams, including design, operations, and validation
specialists, to communicate technical findings and propose solutions.

 * Operate efficiently under tight deadlines, adapting to shifting priorities within a dynamic
project environment.

 * Continuously adopt new tools, digital capabilities, and engineering approaches to enhance testing efficiency and output quality.