4,928 Application Developers jobs in the United Kingdom

Amex GBT is a place where colleagues find inspiration in travel as a force for good and - through their work - can make an impact on our industry. We're here to help our colleagues achieve success and offer an inclusive and collaborative culture where your voice is valued.
Sitting within our Product Delivery organisation, the full-stack Software Developer works as a member of a multi-disciplined Agile team to develop and deliver our proprietary travel products and platforms. Contributing to the development process, the Software Developer helps generate delivery ideas and solutions whilst encompassing the full spectrum of design, coding, manual and automated testing. Playing a pivotal role, the Software Developer ensures successful delivery of key strategic objectives through the development of high quality full-stack software and supporting documentation.
**What You'll Do on a Typical Day**
+ Develop secure, enterprise-level web and server-side applications using React and C# whilst following and improving upon coding style standards and guidelines.
+ Effectively use source control, write unit tests and liaise internally with software testers to support the delivery of high quality bug-free code.
+ Leverage existing knowledge to use the correct development approach, whilst adapting to the task at hand.
+ Follow best practices around .NET secure coding and PCI-DSS compliance.
+ Assist in the creation and progression of technical documentation for modules and features.
+ Participate in Agile Scrum ceremonies, work with JIRA and Confluence tools.
+ Work with key stakeholders to understand, develop and deliver customer requirements.
+ Share knowledge of modern development techniques, coach, and mentor other team members.
+ Use available technical and non-technical resources to develop and maintain a good understanding of the travel industry, our products, and services.
**What Technical Skills** **You'll** **Develop**
+ .NET 8+, C#, ASP.NET MVC
+ React, NextJS, Redux
+ Advanced Javascript, Typescript
+ Entity Framework Core
+ Web API, RESTful services
+ Unit testing (NUnit/XUnit)
+ Playwright test automation
+ HTML, CSS, JSON
+ T-SQL, SQL Server
**What We're Looking For**
+ Advanced coding ability in C# and React.
+ Experience designing and architecting secure, scalable applications.
+ Experience modernising complex legacy applications.
+ Knowledge of legacy technologies like: ASP.NET Webforms, Visual Basic, .Net Framework 4.5 - 4.8.
+ Able to understand and develop advanced SQL, Stored Procedures.
+ Experience working effectively in a collaborative Agile Scrum environment.
+ Very good understanding of software engineering fundamentals, Object Oriented Design, SOLID principles, common design patterns.
+ Experience with Git, CI/CD and Azure DevOps pipelines.
+ Knowledge of test automation would be an asset.
+ Knowledge of Microservice architectures would be an asset.
+ Able to communicate effectively in written and spoken English.
+ Educated to A-Level.
UK CITIZENSHIP OR AT LEAST MORE THAN A 5 YEARS UK RESIDENT PERMIT
#GBTJobs
**Location**
United Kingdom
**The #TeamGBT Experience**
Work and life: Find your happy medium at Amex GBT.
+ **Flexible benefits** are tailored to each country and start the day you do. These include health and welfare insurance plans, retirement programs, parental leave, adoption assistance, and wellbeing resources to support you and your immediate family.
+ **Travel perks:** get a choice of deals each week from major travel providers on everything from flights to hotels to cruises and car rentals.
+ **Develop the skills you want** when the time is right for you, with access to over 20,000 courses on our learning platform, leadership courses, and new job openings available to internal candidates first.
+ **We strive to champion Inclusion** in every aspect of our business at Amex GBT. You can connect with colleagues through our global INclusion Groups, centered around common identities or initiatives, to discuss challenges, obstacles, achievements, and drive company awareness and action.
+ And much more!
All applicants will receive equal consideration for employment without regard to age, sex, gender (and characteristics related to sex and gender), pregnancy (and related medical conditions), race, color, citizenship, religion, disability, or any other class or characteristic protected by law.
Click Here ( for Additional Disclosures in Accordance with the LA County Fair Chance Ordinance.
Furthermore, we are committed to providing reasonable accommodation to qualified individuals with disabilities. Please let your recruiter know if you need an accommodation at any point during the hiring process. For details regarding how we protect your data, please consult the Amex GBT Recruitment Privacy Statement ( .
**What if I don't meet every requirement?** If you're passionate about our mission and believe you'd be a phenomenal addition to our team, don't worry about "checking every box;" please apply anyway. You may be exactly the person we're looking for!
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