Software Test Engineer
Copello
Letchworth Garden City · posted 11 August 2026
Salary
£42,000 – £50,000 a year
Job type
full time
Location
Letchworth Garden City, Hertfordshire
Category
Engineering
Software Test Engineer
Location – Hertfordshire, 3-4 days per week.
Salary – Up to £50,000 DoE.
Copello is working within a leading defence business and are looking for a talented Software Test Engineer to work on advanced simulation systems for defense applications. This is a unique opportunity to contribute to high-stakes projects that require precision, innovation, and dedication.
Key Responsibilities
* Plan and execute software and systems testing activities.
* Develop test plans, test specifications and validation strategies.
* Investigate software issues and support fault finding activities.
* Analyse system data and logs to identify defects and verify performance.
* Support integration, demonstrations and customer trials.
* Produce clear technical reports and communicate progress to project stakeholders.
* Work closely with multidisciplinary engineering teams throughout development and delivery.
Skills & Experience
* Experience in software testing, systems integration or verification & validation (V&V).
* Python scripting experience.
* Knowledge of software development lifecycles and Agile methodologies.
* Familiarity with tools such as GitLab, Jenkins, JIRA or similar development environments.
* Experience analysing software logs and system data.
* ISTQB certification or equivalent software testing experience is desirable
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