Senior iOS Engineer — Platform Tooling & Release Lead

Aumni; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

J.P. Morgan Personal Investing is seeking a Senior iOS Engineer to design, build, and maintain the iOS SDLC toolchain, ensuring compliance and reliability.

You will drive initiatives, mentor engineers, and be the go-to expert for iOS platform questions, improving developer experience and adopting new tech. You will collaborate across squads, contribute to a culture of learning, and deliver high-quality software that supports the firm's financial goals and customer outcomes in a fast-moving

Qualifications

• Significant commercial experience in native iOS mobile application development.
• Strong knowledge of Swift, Xcode, and LLVM/Clang build systems.
• Experience with Jenkins, Groovy, and Docker for CI/CD pipelines.
• Hands-on experience owning or improving mobile release processes, including signing and provisioning.
• Understanding of mobile application security and regulated control environments.
• Excellent analytical, debugging, and problem-solving skills for complex build, runtime, and production issues.

Responsibilities

• Design, build, and maintain the iOS SDLC toolchain to meet firm standards.
• Write and maintain Jenkins pipelines (Groovy, Docker, Shell) for iOS and engineering tools.
• Keep Xcode, Swift, iOS SDK, and supporting tools updated with stable versions.
• Own and optimize a reliable, repeatable release cycle for iOS apps.
• Identify and automate gaps and friction in developer experience and release processes.
• Take on cross-cutting iOS work beyond single feature teams or pillars.
• Define and improve iOS architecture patterns and testing strategies.
• Write, maintain, and support Architectural Decision Records (ADR) for the iOS platform.
• Track and adopt new iOS technologies and platform features where valuable.
• Set up and maintain AI skills for safe and effective use by iOS engineers.
• Lead and contribute to technical initiatives that enhance the codebase and toolset.
• Own shared core layers of the iOS app, including monitoring, feature flags, and networking.
• Act as senior escalation point for incidents, complex bugs, and production issues.
• Provide timely guidance and support for iOS technical questions across the team.
• Focus on root cause analysis and resolution.
• Collaborate with Security teams to implement controls and reduce risk.
• Coordinate and resolve security findings with feature teams.
• Mentor and guide iOS engineers at all levels.
• Review code across iOS projects, maintaining quality and fostering learning.
• Share knowledge through sessions and skill-sharing within the iOS and Engineering teams.

Skills

Swift

Xcode

LLVM/Clang

CI/CD

Jenkins

Groovy

Docker

Architecture patterns

Debugging

Security

Tools

Jenkins

Groovy

Docker

Xcode

Job description

J.P. Morgan Personal Investing is seeking a Senior iOS Engineer to design, build, and maintain the iOS SDLC toolchain, ensuring compliance and reliability.

You will drive initiatives, mentor engineers, and be the go-to expert for iOS platform questions, improving developer experience and adopting new tech. You will collaborate across squads, contribute to a culture of learning, and deliver high-quality software that supports the firm's financial goals and customer outcomes in a fast-moving