SII UK is seeking a SOFTWARE AUTOMATION TEST ENGINEER to join our growing engineering team developing advanced validation frameworks for connected devices and intelligent digital products.
Working within a Python-based environment, you will design and build robust end-to-end automation frameworks that interact directly with physical hardware, enabling large-scale validation and quality assurance across device fleets. The role combines software engineering, test automation, infrastructure development, and systems integration, providing an opportunity to work on complex real-world products in a highly collaborative engineering environment.
The successful candidate will have strong Python development expertise and experience building automation solutions for hardware, embedded, or IoT-based systems.
KEY RESPONSIBILITIES
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Design, develop, and maintain end-to-end test automation frameworks using Python.
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Create automation solutions that interact with and validate physical devices and hardware platforms.
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Build reusable device abstraction layers, automation libraries, and testing utilities.
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Develop scalable testbed infrastructure supporting automated execution across large device fleets.
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Design and implement frameworks that support reliable and repeatable validation in laboratory and production environments.
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Build and maintain APIs, web services, microservices, SDKs, and supporting backend services.
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Develop monitoring, reporting, logging, and diagnostic capabilities within automation platforms.
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Apply software engineering best practices including code quality standards, design patterns, modular architecture, and automated testing.
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Collaborate closely with global engineering, software development, and quality teams.
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Troubleshoot hardware, software, and automation issues across multiple environments.
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Support continuous improvement initiatives for automation efficiency, scalability, and reliability.
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Contribute to technical design reviews, architecture discussions, and process improvements.
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Share knowledge and mentor team members to support engineering excellence.
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Produce clear technical documentation and communicate effectively with stakeholders.
SKILLS REQUIRED
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Strong Python software development skills.
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Experience designing and developing automated test frameworks.
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Knowledge of hardware integration and device communication protocols.
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Experience testing physical products, embedded systems, or IoT devices.
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Strong understanding of software architecture, object-oriented design, and design patterns.
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Experience with RESTful APIs, web services, and backend system integration.
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Knowledge of automation infrastructure, test orchestration, and execution platforms.
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Experience using source control systems such as Git.
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Understanding of continuous integration and continuous delivery (CI/CD) practices.
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Experience debugging complex hardware and software interactions.
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Knowledge of Linux-based development and testing environments.
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Experience with IoT device ecosystems and connected products.
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Knowledge of networking concepts including TCP/IP, Wi-Fi, Bluetooth, and device provisioning.
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Experience with embedded software validation and hardware-in-the-loop testing.
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Familiarity with cloud platforms and distributed systems.
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Experience developing automation for camera, sensor, consumer electronics, or smart device platforms.
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Exposure to AI-assisted testing, machine learning validation, or Generative AI technologies.
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Experience with containerisation technologies such as Docker and Kubernetes.
EXPERIENCE REQUIRED
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Bachelor's degree in Computer Science, Software Engineering, Electronics Engineering, or a related technical discipline, or equivalent industry experience.
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Commercial experience in software development using Python.
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Proven experience building and maintaining automated testing frameworks.
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Experience developing automation against physical hardware, embedded systems, or IoT devices.
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Experience delivering production-quality software solutions following software engineering best practices.
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Experience working with hardware test environments, laboratories, or device validation systems.
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Experience integrating automation solutions into CI/CD pipelines.
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Familiarity with Agile software development methodologies.
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Experience collaborating within cross-functional engineering teams.
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.
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Automation Test Software Engineer in London employer: SII Group
SII Group is an exceptional employer for a Test and Means Engineer, offering a dynamic work environment that prioritises innovation and collaboration. With a strong commitment to employee growth, competitive benefits including private medical insurance and flexible working arrangements, and a culture built on trust and transparency, SII Group empowers its engineers to thrive in high-reliability sectors like Aerospace and Defence. Join us in a role where your contributions are valued, and be part of a team dedicated to continuous improvement and excellence.
