Job Description

ControlUp is transforming the way IT manages systems and troubleshoots issues. We are looking for an experienced Multi-Platform Agent Automation Engineer to design, build, and maintain our critical automated testing infrastructure. This infrastructure must validate the complex, low-level functionality of our agents across Windows, Linux, and macOS end-points. This is a full-time, permanent work from home position based in the UK or Europe.
The ideal candidate will be pivotal in ensuring the robustness, reliability, and performance of the next-generation ControlUp agent platform. This role offers a unique opportunity to build scalable testing solutions for cutting-edge system monitoring and management technologies.

Description of Work:

Design, implement, and maintain a robust, scalable, and cross-platform automated testing framework for agent functionality (e.g., data collection, remote execution, inter-process communication). Develop high-quality, reliable, and reusable automation tests (component, integration, end-to-end) primarily in C# (.NET) to validate agent behavior on Windows, Linux, and macOS. Work closely with development engineers to understand low-level system interactions and ensure test coverage for platform-specific components (e.g., Win32 API, Linux syscalls, macOS IOKit/Launchd). Integrate test suites into the CI/CD pipeline using Azure DevOps to ensure rapid and high-quality releases. Configure and maintain the multi-platform test environment, including provisioning virtual machines, containers, and physical end-points for accurate testing. Monitor test execution, analyze results, report defects, and collaborate with developers to ensure timely resolution. Translate business requirements and user scenarios into comprehensive test plans, technical specifications, and automation tasks. Participate fully in the Agile development lifecycle: planning, daily stand-ups, demos, and reviews.

Must Haves

5+ years of experience in software development or QA focused on automation engineering. Strong proficiency in C#/.NET for developing internal tools and integration tests, or demonstrable experience in a similar compiled language. Deep expertise in a scripting language for test orchestration and framework maintenance. Proven experience building and maintaining automated testing frameworks from scratch. Solid understanding of system-level software, including agents, services, or drivers, and the challenges of testing them.Strong practical knowledge of at least two of the following operating systems at a command-line/system-level: Windows, Linux, or macOS. Experience with CI/CD pipeline configuration and management (Azure DevOps Repos/Pipelines is a significant plus). Excellent knowledge of networking fundamentals, REST APIs, WebSockets, and inter-process communication protocols. Experience writing complex queries (SQL, KQL) to validate data collection and persistence. Solid understanding of multi-threaded programming and concurrency issues in testing. Organised, self-motivated, collaborative team player with a passion for quality.Experience in start-up culture delivering enterprise-level software.

About the Team:

We are an Agile team; we work iteratively, fast-paced, and focus on delivering features and business value quickly. We deliver robust fixes and features to customers swiftly. We're in it together and deliver together. We take accountability and don't throw things over the fence. We are strongly invested in AI tools to assist us with our tasks and enjoy knowledge sharing. We make engineering-led decisions, with emphasis on clean architecture and maintainable code over technical debt. Whilst we work as a team, each individual makes a significant business impact and has clear opportunities to grow their career.


We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.