Mobile Automation Software Development Engineer

SII Group; United Kingdom; Remote; GBP 60,000 - 90,000; Full time

Job summary

SII UK seeks a Mobile Automation Software Development Engineer to design and build robust automation for iOS and Android, in a Python-based environment, across physical devices, emulators, and cloud testing infra.

You will collaborate with global teams, implement Appium-based frameworks, and integrate with CI/CD, REST APIs, and scalable architectures. This role offers opportunities in a collaborative, engineering-forward culture.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related discipline or equivalent experience.
• Commercial experience in Python software development.
• Proven experience developing and maintaining mobile automation solutions.
• Hands-on experience with Appium automation frameworks.
• Experience automating native, hybrid, or mobile web apps across iOS and Android.
• Experience with emulators, simulators, and physical devices.
• Experience building scalable automation frameworks for enterprise testing environments.
• Experience integrating automated testing into CI/CD pipelines.
• Familiarity with cloud-hosted mobile testing platforms such as AWS Device Farm, BrowserStack, Sauce Labs.
• Experience in Agile software environments.
• Demonstrated delivery of production-quality software and automation.

Responsibilities

• Design, develop, and maintain mobile automation frameworks using Python.
• Build and enhance automation solutions for iOS and Android.
• Develop test automation capable of running across physical devices, emulators, and simulators.
• Create and maintain Appium-based automation frameworks and reusable test libraries.
• Integrate mobile automation solutions with cloud-based device testing platforms and CI pipelines.
• Develop scalable automation architecture supporting parallel execution and broad device coverage.
• Design and build APIs, web services, microservices, and SDKs to support automation and testing requirements.
• Apply software engineering best practices, including code reusability, design patterns, testing, and documentation.
• Work closely with international development teams throughout the software development lifecycle.
• Identify and resolve automation reliability, stability, and performance issues.
• Support continuous improvement initiatives within quality engineering and test automation practices.
• Mentor colleagues and contribute to knowledge sharing across the engineering team.
• Communicate effectively with technical and non-technical stakeholders.

Skills

Python

Appium automation

Mobile testing

CI/CD integration

REST APIs

Git

Cloud testing tools

Education

Bachelor's degree in Computer Science/Software Engineering or related

Tools

Appium

Git

AWS Device Farm

BrowserStack

Sauce Labs

Jenkins / CI tools

Job description

MOBILE AUTOMATION SOFTWARE DEVELOPMENT ENGINEER

This role focuses on designing and building robust mobile automation solutions that support large-scale validation of iOS and Android applications. Working within a Python-based environment, you will develop automation platforms capable of operating across physical devices, emulators, and cloud-hosted testing infrastructure. You will collaborate with global engineering teams to deliver high-quality software solutions while helping drive innovation in automated testing and quality engineering.

The position offers an excellent opportunity for an engineer who combines strong software development capabilities with hands-on experience in mobile automation technologies.

KEY RESPONSIBILITIES

• Design, develop, and maintain mobile automation frameworks using Python.

• Build and enhance automation solutions for both iOS and Android applications.

• Develop test automation capable of running across physical devices, emulators, and simulators.

• Create and maintain Appium-based automation frameworks and reusable test libraries.

• Integrate mobile automation solutions with cloud-based device testing platforms and continuous integration pipelines.

• Develop scalable automation architecture supporting parallel execution and broad device coverage.

• Design and build APIs, web services, microservices, and SDKs to support automation and testing requirements.

• Apply software engineering best practices, including code reusability, design patterns, testing, and documentation.

• Work closely with international development teams throughout the software development lifecycle.

• Identify and resolve automation reliability, stability, and performance issues.

• Support continuous improvement initiatives within quality engineering and test automation practices.

• Mentor colleagues and contribute to knowledge sharing across the engineering team.

• Communicate effectively with technical and non-technical stakeholders.

SKILLS REQUIRED

• Strong Python software development skills.

• Experience building and maintaining mobile automation frameworks.

• Strong knowledge of Appium and mobile test automation best practices.

• Experience automating iOS and Android applications.

• Understanding of mobile application architecture and development lifecycles.

• Experience working with emulators, simulators, and physical device testing environments.

• Experience integrating automation frameworks with CI/CD pipelines.

• Knowledge of RESTful APIs and web services.

• Understanding of software design patterns and object-oriented programming principles.

• Experience using source control tools such as Git.

• Knowledge of automation reporting, monitoring, and test execution management.

• Familiarity with cloud-hosted testing platforms and distributed test execution.

EXPERIENCE REQUIRED

• Bachelor's degree in Computer Science, Software Engineering, or a related discipline, or equivalent commercial experience.

• Commercial experience in software development using Python.

• Proven experience developing and maintaining mobile automation solutions.

• Hands-on experience with Appium automation frameworks.

• Experience automating native, hybrid, or mobile web applications across iOS and Android platforms.

• Experience working with mobile device emulators, simulators, and physical testing devices.

• Experience building scalable automation frameworks suitable for enterprise-level testing environments.

• Experience integrating automated testing into CI/CD pipelines.

• Familiarity with cloud-hosted mobile testing platforms such as AWS Device Farm, BrowserStack, Sauce Labs, or similar services.

• Experience working within Agile software development environments.

• Demonstrable experience delivering production-quality software and automation solutions.

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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