Senior Software Engineer - Platform & App Security (Sales Engineering)

Do you want to help build some of the largest and most consequential enterprise and customer technology systems in the world? Join Apple’s Information Systems and Technology (IS&T) organisation. IS&T is the engine behind everything Apple does for customers and for the people who build for them. It’s Apple’s central nervous system. Supporting 2.5 billion active Apple devices, processing billions of secure transactions, and keeping the technology that defines modern life running flawlessly, IS&T makes the impossible feel effortless.

Imagine a role where you could use your deep engineering and security expertise to protect platforms that reach hundreds of thousands of points of sale and millions of devices worldwide. Apple’s Sales Engineering teams build the enterprise systems that power the Apple retail and channel partner experiences. We are looking for a Senior Software Engineer to lead the security of these systems, along with the developer platform and cloud infrastructure behind them.

You won’t ship product features, you’ll make sure everything we ship is secure, from design through security testing to delivery, using AI to scale how we find and fix issues. As the lead security engineer for Sales Engineering in London, you will set the security direction for our platforms, working with engineering teams and security counterparts across our global organisation. You’ll work on both live codebases and new platforms, building security in from the start while keeping teams shipping, in close partnership with Apple Information Security.

will mix architecture-level thinking with hands-on technical work. You’ll run threat modelling, analyse complex system dependencies, investigate vulnerabilities, and lead security practices for the teams you support. You’ll also put AI developer tools to work, using them to triage findings, generate security tests and draft fixes, so that security keeps pace with a large portfolio. Platform & App Security Ownership: Own the security posture and risk management for the Sales Engineering systems you support, setting priorities and measurable security goals.

Defensive Engineering & Architecture: Partner closely with engineering teams to shape secure architecture through security requirements, architecture reviews, dependency analysis and threat modelling, enforcing secure-by-design principles. Developer & Cloud Platform Security: Secure our internal software development platform and the cloud environments we use, from source control and CI/CD pipelines to cloud configuration, identity and access.

Security Operations & Investigations: Lead the proactive hardening work that delivers on our security goals, and own reactive vulnerability investigations end to end, from triage and root-cause analysis through to a verified fix. AI-Assisted Security Engineering: Build AI-assisted security workflows and help engineering teams adopt them safely. Apple Security Partnership: Work closely with Apple Information Security and the wider Apple security community. Follow their standards and use their tooling across Sales Engineering, raise our risks early and share what we learn.

Cross-Functional Influence: Represent security in engineering, product and leadership discussions across Sales Engineering, turning security risks into clear, practical recommendations. Hands-on experience finding, analysing and fixing security vulnerabilities in production software, through code review, security testing or investigating real-world issues. Strong software engineering fundamentals and fluency in at least one modern general-purpose programming language. A track record of owning security for complex software platforms, from design through to operation.

Deep expertise in securing distributed systems and cloud platforms at scale, including PKI and certificate lifecycle management, TLS and mutual TLS, service and device authentication, secrets and key management, and software supply chain security. Excellent written and verbal communication, with the ability to explain security risk clearly and win support for security decisions from engineers and senior leaders. Experience embedding security into CI/CD pipelines and developer workflows, e.g. static analysis and dependency scanning.

Practical experience applying AI developer tools to security work, such as code analysis, test generation or triaging findings. BSc or MSc in Computer Science or equivalent practical engineering experience.

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