System Administrator jobs in United Kingdom

Behind every investment is a person with ambitions, motivations and values. While we know that every client is unique, they come to J.P. Morgan Personal Investing for the same reason: our straightforward and transparent approach to investing, and the trust that 150 years of J.P. Morgan heritage brings.

J.P. Morgan Personal Investing offers award‑winning investments, products and digital wealth management services to over 275,000 investors in the UK. We built the business with innovation as a core part of our ethos to give consumers the confidence and clarity to make informed investment decisions and achieve their financial goals.

Our team is at the heart of this venture, focused on getting smart ideas into the hands of our customers. We’re looking for people who have a curious mindset, thrive in collaborative squads, and are passionate about building quality software that has a big impact in a rapidly changing environment. By their nature, our people are also solution‑oriented, commercially savvy and have a head for fintech. We work in tribes and squads that focus on specific products and projects.

• Work with the Product team to understand user’s needs and follow an Agile SDLC to develop and deliver product features. Our stack is Java/Springboot with a bit of Kotlin, DynamoDB, Aurora/MySQL and AWS.
• Participate with the rest of the team in the process of designing how our architecture needs to evolve to meet our needs. We use ADRs as part of our decision‑making process and our architecture is microservices running on Kubernetes with a heavy use of Kafka and even‑driven design.
• Take ownership of tasks from the estimation stage right through until the release stage and post production.
• Identify, troubleshoot and resolve existing or newly‑identified prioritised defects.
• Write tests for all code you deliver and adhere to best practices/standards, ensuring high‑quality code.
• Take ownership of, or assist others with, releases and associated processes (we try to deploy as often as possible).
• Participate in code reviews, ensuring high code quality and continuous development and learning for yourself and your colleagues.
• Be someone who enjoys knowledge sharing, who is keen to attend and participate in some of the many skill share sessions we regularly hold in the team and across the wider Engineering department.
• Propose/contribute/collaborate on Technical Initiatives - improving and evolving the existing codebase and toolset.
• Be keen to ensure that we focus on solving the essence of the problem rather than merely dealing with the symptoms.

• English working proficiency is a must, you will be working with the team in London.
• Commercial experience on native iOS mobile application development.
• Good Knowledge of object‑oriented programming with Swift, Xcode.
• Strong analytical and problem‑solving skills.
• Experience writing unit tests using XCTest framework.
• Experience with the MVVM + Coordinator design pattern and other relevant architecture patterns like SOLID.
• Experience with best practices in mobile design (human interface guidelines, threading, etc).
• Good knowledge of core iOS libraries and frameworks (e.g. UIKit, SwiftUI, Foundation, Security, Combine).
• Experience with iOS application deployment (testing, approval, publishing to Apple store).
• Experience with automated CI/CD processes and tools (we use Bitrise but this is not a pre‑requisite).
• Experience with monitoring and alerting in order to maintain a production application.
• Good understanding of REST and what it means to work with APIs.
• Experience with Git flow.
• Good communication skills, you can work well within a delivery team and manage interactions with other parts of the organisation, such as Product and Operations.
• Curious about new ways of working and open to different approaches and ideas.
• Proactive and willing to help others put forward ideas.

• Experience writing UI tests using XCUITest or other framework.
• Experience building or working with Design Systems (UI Development, White‑labelling).
• Experience with modularisation and dependency injection.
• Appreciation for Accessibility and understanding of how to meet Accessibility requirements.
• Understanding of Mobile Application Security considerations.
• Experience with React Native Experience with feature flagging and A/B testing methodologies.
• Experience in the FinTech sector.
• Show us your Github/Stack Overflow/app portfolio!