Senior Web Application Developer

About The Role & Team At The Walt Disney Company, we believe that technology and storytelling go hand in hand. For a century, Disney has been at the forefront of innovation—creating unforgettable experiences and connecting audiences across generations. From our legendary parks and resorts to our cutting‑edge streaming platforms, technology is the invisible magic that powers everything we do.

This role sits within the Walt Disney Travel Company (International), part of Disney Destinations International (DDI), the division that brings Disney Parks, Resorts, and experiences to guests across EMEA. We are seeking a Senior Web Application Developer to join our talented team based in Hammersmith, London, and play a pivotal role in the next phase of our web platform modernisation, evolving our eCommerce platform and portfolio of marketing microsites toward a modern ASP.NET MVC 5 and cloud‑native (Azure/AWS) architecture. This is a permanent position located at our London office in Hammersmith, requiring four days of on‑site attendance per week.

What You Will Do This role will play a pivotal part in designing, building, and maintaining scalable, secure web applications that deliver complex solutions smoothly and seamlessly across multiple platforms. Working closely with stakeholders, the developer will bring technical excellence, creative problem‑solving, and a proactive approach to continuous improvement. The successful candidate will demonstrate high standards, attention to detail, and a forward‑thinking mindset—helping shape coding best practices, modern coding standards, and supporting our long‑term journey toward a fully cloud‑ready.

Deliver components of the cloud migration, contributing to the transition of legacy on‑premises solutions to Azure in line with agreed architecture and cloud‑native standards, while supporting stable releases and minimal disruption. Develop and maintain complex web solutions using ASP.NET MVC 5, C#, and React, delivering high‑quality, scalable, and maintainable code. Support the migration to new technologies, ensuring clean architecture, scalable design, and efficient implementation delivered smoothly and seamlessly.

Apply SOLID principles, object‑oriented design, and industry best practices to build secure, performant, and fault‑tolerant systems. Collaborate with cross‑functional teams (Digital Product, Technology, Marketing) to define, estimate, and deliver features on time and to specification. Participate in architectural discussions, proposing innovative improvements to enhance system performance, reliability, and maintainability.

Develop front‑end interfaces using modern web technologies (HTML5, CSS3, JavaScript, React) to ensure engaging and responsive user experiences. Integrate APIs and third‑party services, ensuring robust, efficient connectivity with external systems and platforms. Manage source control, branching, and deployments using GitLab or Azure DevOps pipelines, ensuring seamless delivery across environments.

Participate in code reviews, mentor junior and mid‑level developers, and ensure adherence to standards and best practices. Troubleshoot and resolve issues across development, staging, and production environments, maintaining high levels of system stability. Support smooth and stable release cycles across multiple websites and environments.

Research and evaluate emerging technologies, frameworks, and tools to continuously enhance team capability and product quality. Experience, Skills & Qualifications Required Hands‑on experience with Azure ecosystem, specifically in architecting and deploying Azure App Services, Azure SQL Database, Azure Functions, and managing cloud infrastructure including Virtual Networks (VNet), API Management (APIM), and Azure Storage solutions. Minimum 8 years of digital development experience with a strong portfolio in bespoke eCommerce and enterprise web applications.

Proven experience in migrating legacy systems to Azure, with a deep understanding of cloud design patterns, resource optimization, and leading large‑scale infrastructure transformation projects. Proven expertise on C#, ASP.NET MVC 5, SQL Server, Entity Framework, and desirable to have HTML5, CSS3, JavaScript, jQuery, and React experience. Strong knowledge of Object‑Oriented Programming, SOLID principles, and common design patterns.

Experienced in RESTful API design and integration; experience with SOAP WebServices and XML/XPath. Skilled in using IoC containers (Autofac, Ninject) and unit testing frameworks (NUnit, Moq, SpecFlow). Proficient with source control management tools and processes (Git, GitFlow, SourceTree) and dependency management using NuGet.

Experienced with CI/CD and DevOps pipelines using GitLab, Azure DevOps, TeamCity, Cake, or Octopus. Working knowledge of Agile methodologies (Scrum/Kanban) and issue tracking tools such as Jira. Proven track record of delivering features and projects to deadlines while maintaining high standards of quality and reliability.

Understanding of application and database performance tuning, troubleshooting, and optimization techniques. Comfortable working in small, collaborative teams and taking initiative in managing development tools, environments, and build processes. Familiarity with enterprise CMS platforms (e.g., SDL Tridion).

The Perks 25 days annual leave Private medical insurance & dental care Free Park Entry for you, your family, and friends Disney Discounts on products, resorts, and ticketing Complimentary Disney+ Subscription Excellent parental and guardian leave Access to Employee Resource Groups – including WOMEN @ Disney, Disney DIVERSITY, Disney PRIDE, ENABLED, and TRUST (Mental Health & Wellbeing) The Walt Disney Company is an Equal Opportunity Employer. We strive to be a diverse workforce that is representative of our audiences, and where all can thrive and belong. We are committed to building a team that includes and respects a variety of voices, identities, backgrounds, experiences and perspectives.

We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation. #J-18808-Ljbffr