Software Engineer jobs in United Kingdom

We’re looking for a Software Engineer to build and enhance the tooling that powers our security-first development lifecycle.

• Design, prototype, and productionize AI-driven solutions: AI driven security code reviews, noise reduction in existing tooling and risk scoring.
• Scale and operate custom solutions, ensuring high availability, performance and extensibility.
• Collaborate with cross-functional teams across Arm to evolve and support security-centric developer tools.
• Develop and extend Python services and scripts to embed AI models and automate security workflows.
• Document integration patterns, AI workflows, operational runbooks, and usage guides for security and engineering teams.

• Strong coding ability in Python and scripting abilities (e.g. bash).
• Solid grasp of C/C++ fundamentals. Able to compile, read, and dissect low-level code to enhance, and integrate with, our security tooling.
• Practical knowledge of Linux environments, containerization(Docker), and cloud platforms (AWS or comparable).
• Proven ability to build CI/CD pipelines (GitLab CI, GitHub Actions).
• Clear and effective written and verbal communication skills.

• Familiarity with GenAI paradigms (e.g. retrieval-augmented generation, agentic workflows, Model Context Protocol, evaluation sets) and hands-on experience with related tooling.
• Experience designing and managing cloud infrastructure using Terraform or equivalent IaC frameworks.
• Familiar with open-source project development and contribution processes.

Join us to architect the next-generation security framework that powers safe, scalable development—apply today!

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At Arm, we want to build extraordinary teams. If you need an adjustment or an accommodation during the recruitment process, please email accommodations@arm.com. To note, by sending us the requested information, you consent to its use by Arm to arrange for appropriate accommodations. All accommodation or adjustment requests will be treated with confidentiality, and information concerning these requests will only be disclosed as necessary to provide the accommodation. Although this is not an exhaustive list, examples of support include breaks between interviews, having documents read aloud, or office accessibility. Please email us about anything we can do to accommodate you during the recruitment process.

Arm’s approach to hybrid working is designed to create a working environment that supports both high performance and personal wellbeing. We believe in bringing people together face to face to enable us to work at pace, whilst recognizing the value of flexibility. Within that framework, we empower groups/teams to determine their own hybrid working patterns, depending on the work and the team’s needs. Details of what this means for each role will be shared upon application. In some cases, the flexibility we can offer is limited by local legal, regulatory, tax, or other considerations, and where this is the case, we will collaborate with you to find the best solution. Please talk to us to find out more about what this could look like for you.

Arm is an equal opportunity employer, committed to providing an environment of mutual respect where equal opportunities are available to all applicants and colleagues. We are a diverse organization of dedicated and innovative individuals, and don’t discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.