Software Development Engineer In Test

September 27, 2026

Hybrid

Middle

London, United Kingdom

May rule you out

No visa sponsorship

Worth knowing

Mandatory office attendance
English is required

Description

Athos Commerce is hiring a Software Development Engineer in Test to strengthen quality engineering across its ecommerce and digital marketing tools. The role focuses on building AI-assisted quality workflows, scaling automated testing across UI, API and data layers, and supporting the migration of the existing C# Selenium framework to Playwright with TypeScript. You will integrate reliable test execution and quality gates into Azure DevOps CI/CD pipelines, investigate failures across logs, APIs, databases and production telemetry, and contribute hands-on code and test strategy. This is a hybrid London (Victoria) role with roughly one office visit per month, reporting to the Head of QA.

Responsibilities

Build AI-assisted quality workflows that help engineers generate, maintain and triage test assets more efficiently
Build and maintain automated testing across UI, API and data layers
Support the migration of the existing C# Selenium automation framework to Playwright with TypeScript
Integrate reliable automated test execution and quality gates into Azure DevOps CI/CD pipelines
Investigate failures across application logs, APIs, databases, telemetry, test environments and production systems
Improve observability and production quality through monitoring, alerting and better visibility into feed and syndication failures
Contribute to test strategy, including what should be tested, at which layer, and where automation provides the greatest value
Support release and pre-release quality by identifying what has been verified and communicating residual risk
Review pull requests and contribute hands-on code that improves quality tooling and automation
Share knowledge and help make effective quality engineering practices easy for other engineers to adopt

Requirements

3+ years of software testing experience spanning hands-on testing and test automation
Strong C#/.NET experience with the ability to independently write and maintain production-quality automation code
Experience working within and extending test automation frameworks; building a framework from scratch is a plus
Hands-on CI/CD experience with Azure DevOps or a comparable platform, including diagnosing failed pipeline runs
Strong SQL skills to independently query databases and validate application data
Experience troubleshooting beyond the UI using APIs, application logs, databases and other technical signals
Strong understanding of test design: negative testing, boundary conditions, invalid data, partial failures and other non-happy-path scenarios
Meaningful experience using AI tools in software engineering or quality workflows
Ability to evaluate and validate AI-generated outputs
Clear written and verbal English communication skills
Existing right to work in the UK
Quality-focused engineer who enjoys solving complex technical problems and building scalable solutions
Highly analytical and comfortable investigating issues beyond the UI, including APIs, logs, databases, pipelines and production telemetry
Automation-minded, with a strong desire to eliminate repetitive manual testing through better tooling and workflows
Curious and proactive, able to determine what needs testing and why rather than relying solely on predefined test cases
Comfortable working independently while collaborating closely with engineering, QA and product teams
Pragmatic about AI, understanding where it can accelerate engineering work and where human judgement remains essential
Motivated by continuous improvement and making quality engineering easier for the teams around you

Conditions

Hybrid working with approximately one office visit per month in London, Victoria, and flexible working between home and office
Reports to the Head of QA
Competitive compensation
25 days' holiday per year, increasing by one day for each year of service up to a maximum of 28 days
Company pension scheme
Vitality Healthcare, half price gym membership and free coffee
Cycle to work programme
Equal-opportunity employer with accommodation available during the application process if required

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