Description This is a fantastic opportunity to join our payments team within the paymod value stream as a senior engineer. This value stream is responsible for developing a new platinum business service payments system using cloud based services. This is a very critical payments system which is core to our member’s banking needs. To build this new vision we are looking to recruit a new applications engineer, who has proven experience in coding and DevOps, who is an agile thinker and ready to help us learn new technologies and architectures. You’ll be at the frontline, delivering our vision to our members by designing, building, testing and maintaining systems used to process millions of transactions every day. You’ll be given the opportunity to work with the most up-to-date technologies to deliver real change. At Nationwide we offer hybrid working wherever possible. More rewarding relationships are supported through our hybrid approach, bringing colleagues together across our UK wide estate, whilst also supporting generous access to home working. We value our time in the office to solve problems, to learn, and to feel connected. For this job you'll spend at least two days per week, or if part time you'll spend 40% of your working time, based at either our Swindon or London office. If your application is successful, your hiring manager will provide further details on how this works. You can also find out more about our approach to hybrid working here. If we receive a high volume of relevant applications, we may close the advert earlier than the advertised date, so please apply as soon as you can. Responsibilities What you’ll be doing As an experienced software engineer, you will play a key role throughout the entire software development lifecycle. Your responsibilities will include writing test cases, developing microservices, and ensuring that end-to-end systems operate as intended. You’ll translate complex designs into secure, resilient implementations aligned with industry best practices. At times, you will be called upon to triage and resolve technical defects discovered during testing or in production environments. You will also mentor junior engineers with varying levels of experience, guiding them through technical challenges and promoting high-quality standards via peer code reviews. This position requires both deep technical expertise and strong communication skills, as you’ll collaborate closely with fellow engineers, product owners, and technical designers. About you We are looking for an applications engineer with strong java skills who will work with a community of multi skilled teams who build and maintain highly scalable solutions. We need someone with expertise including: Extensive Java development skills and in depth knowledge of the language including Sprint Boot Familiar with XML, JSON data structure and storage within NoSQL datastores Testing methodologies including behaviour driven development and test driven development Tooling including Docker, Kubernetes, Wiremock, Cucumber, Harness, Jenkins, Junit, Kafka, Atlassian Jira & Confluence, SonarQube and Dynatrace Building microservice architectures and event driven architectures Building cloud hosted solutions and utilising cloud base services Experience of working to SCRUM/agile principles and methodologies Extensive experience in problem solving and designing solutions Performing functional or non-functional testing Possess technical leadership skills and excellent organisational skills Good mentoring skills with the ability to inspire other engineers Management of and engagement with our engineering partners and 3rd party suppliers Our customer first behaviours put customers and members at the heart of how we work together. They are the set of behaviours that every colleague needs to display, in every role: Feel what customers feel - We step into our customers’ shoes, using their feedback and insights to empathise with them and to understand their needs, so that every decision we make starts and finishes with our customers in mind Say it straight - We are brave in speaking out and saying what we think – we’re honest and direct with good intent, openly sharing diverse perspectives to reach the best conclusions and using language everyone can understand Push for better - We don’t settle for mediocrity, we challenge the status quo, taking responsibility for continuous improvement and personal development Get it done - We prioritise what will have the greatest impact, we are decisive, and we take accountability for delivering brilliant customer outcomes. You can strengthen your application by showing how our customer first behaviours resonate with you, and where you may have already demonstrated these. Qualifications The extras you’ll get There are all sorts of employee benefits available at Nationwide, including: 25 days holiday, pro rata From January 2026, all Nationwide colleagues will benefit from private medical insurance A highly competitive pension to help you build a strong foundation for retirement Access to an annual performance related bonus Training and development to help you progress your career A great selection of additional benefits through our salary sacrifice scheme Life assurance to provide peace of mind for you and your loved ones in the event of your death. Wellhub – access to a range of free and paid options for health and wellness Up to 2 days of paid volunteering a year Banking – but fairer, more rewarding, and for the good of society We forge our own path at Nationwide. As a mutual, we’re owned by our members - those customers who bank, save or have a mortgage with us. We challenge the financial sector status quo. We don’t see customers as the engine of our own profit. We share our profits with them and put their needs first. Always there when they need us. Supporting them and their lives. If you’re inspired by fairer finances, passionate about making a meaningful impact, and truly care about our customers, you’re one of us. At Nationwide, you are challenged to grow and rewarded for doing so. Valued. Recognised. Inspired to be your best. As a community we want our working lives to count. As a team, we celebrate what we achieve. As a standard-setter, we work for the good of customers, communities, and broader society. We are Purpose-driven. Uncompromisingly Customer. Unstoppably Nationwide. What to do next If this role is for you, please click the 'Apply Now' button. You'll need to attach your up-to-date Cv and answer a few quick questions for us. We respond to everyone, so we will be in contact shortly after the closing date to let you know the outcome of your application. If successful in this role the job title will be Engineer E2