Software Test Engineer

SII UK; Stevenage; On-site; GBP 42,000 - 64,000; Full time

Job summary

SII United Kingdom is seeking a Software Test Engineer in Stevenage to support end-to-end software testing and proving lifecycle for simulation software releases. You will plan, execute, and report testing activities to ensure compliance and quality within an agile environment.

The role requires C++ testing experience, test automation knowledge, and familiarity with CI/CD, logs analysis, and regulatory compliance. Join a team delivering mission-critical aerospace and defence software solutions.

Qualifications

• Software testing and QA experience in C++ is required.
• Test automation knowledge.
• Experience analysing software logs and data.
• Understanding of CI/CD pipelines.
• Experience using GitLab and Jira; scripting languages.
• Exposure to IBM PLM/ALM/ETM/DOORS or similar requirements management tools.
• Working knowledge of Agile/Scrum.
• Understanding of compliance and regulatory requirements.

Responsibilities

• Test planning, design, and execution for software proving.
• Lead testing activities and liaise with support teams for logs and data analysis.
• Provide regular updates and reports to project leads; support certification and release activities.

Skills

C++

Test automation

Log analysis

CI/CD pipelines

GitLab

JIRA

Scripting languages

IBM DOORS

AGILE/SCRUM

Compliance/regulatory

Tools

GitLab

JIRA

IBM DOORS

ALM/ETM

Job description

Software Test Engineer

Date: 2026-09-17T00:00:00

Location: Stevenage, Hertfordshire, GB, SG1 1

Application Deadline: 2026-12-20T11:03:44.117

Job Title

Software Test Engineer

Published Date

29/04/2026

Contract Type

CDI

Company

SII United Kingdom

Mission

We are looking for a Software Test Engineer to support the end-to-end software testing and proving lifecycle for simulation software releases. The role focuses on planning, executing, and reporting software testing activities to ensure compliance, quality, and readiness for release within a structured and agile development environment.

Key Responsibilities

• Test / Proving Planning:
  • Understand customer needs and requirements from a software proving perspective
  • Review software design and architecture to define test bed requirements
  • Develop comprehensive software test plans, test designs, specifications, and test sets
• Test / Proving Execution:
  • Perform progressive testing throughout the software development lifecycle
  • Lead testing activities related to software defects
  • Liaise with support teams to provide log and data analysis when issues are identified
  • Demonstrate compliance against defined software requirements
  • Execute formal software qualification and assurance testing
• Test / Proving Reporting:
  • Provide regular updates on software functionality to project leads and stakeholders
  • Produce detailed software test and analysis reports to support certification
  • Support the software release and delivery process, including final certification activities

Profiles / Essential Skills & Experience

• Software testing and quality assurance experience in C++ is a must
• Test automation knowledge
• Experience analysing software logs and data
• Understanding of CI/CD pipelines
• Experience using tools such as GitLab, JIRA, and scripting languages
• Exposure to IBM PLM / ALM / ETM / DOORS (or similar requirements management tools)
• Working knowledge of Agile / Scrum methodologies
• Understanding of compliance and regulatory requirements

About the Agency

With five strategic offices in Belfast, Chester, Farnborough, London and Oxford, we work in partnership with our customers UK-wide to deliver high-impact engineering solutions. SII UK is a trusted Aerospace and Defence engineering partner, supporting the delivery of complex, mission-critical programmes while helping to shape the future of innovation across next-generation systems and technologies.

Our teams contribute daily to creating a fulfilling, stimulating and career development focused work environment. True to our human-centred values, we are committed to making SII UK a Great Place To Work, having been certified 5 years running. Joining SII UK means being part of our collective goals, guided by our mission "Let's Tech Together," and helping to build a digital future that is sustainable, at the heart of an environment that values learning & collaboration.

Who Are We?

With five strategic offices in Belfast, Chester, Farnborough, London and Oxford, we work in partnership with our customers UK-wide to deliver high-impact engineering solutions. SII UK is a trusted Aerospace and Defence engineering partner, supporting the delivery of complex, mission-critical programmes while helping to shape the future of innovation across next-generation systems and technologies.

Our teams contribute daily to creating a fulfilling, stimulating and career development focused work environment. True to our human-centred values, we are committed to making SII UK a Great Place To Work, having been certified 5 years running. Joining SII UK means being part of our collective goals, guided by our mission "Let's Tech Together," and helping to build a digital future that is sustainable, at the heart of an environment that values learning & collaboration.