Avionics System Test Engineer

SII Group UK; Bristol; On-site; GBP 35,000 - 50,000; Full time

Job summary

SII Group UK is looking for a Systems Test Engineer to aid in aerospace integration and validation programmes in Bristol. This role involves supporting both ground and flight-based verification activities while utilizing advanced testing methodologies.

The ideal candidate will have strong aerospace knowledge, experience in system verification, and possess data analysis skills, particularly in Excel. This position offers the chance to work with cross-functional teams and contribute significantly to aircraft systems testing.

Qualifications

• Strong foundational knowledge of aerospace systems and their operational principles.
• Resilience and adaptability in high-pressure environments.
• Experience in programming for automation and data analysis.
• Capable of clear technical communication and structured reporting.

Responsibilities

• Execute system-level validation activities across aircraft subsystems.
• Support lifecycle of airborne test campaigns and generate technical documentation.
• Analyze datasets from testing activities and investigate anomalies.
• Cooperate with cross-functional teams to communicate findings.

Skills

Knowledge of aerospace systems

Data manipulation and analysis using Excel

Technical communication skills

Programming capability (e.g. Python)

Analytical mindset

Job 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.

Key Responsibilities

• 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.

Skills

• 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.