Senior Web Application Developer

Disneyland Hong Kong; Greater London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading entertainment company is seeking a Senior Web Application Developer in London. This permanent role involves modernizing the eCommerce platform and developing secure web applications. Candidates should have expertise in C#, ASP.NET MVC 5, and experience with CI/CD pipelines. Responsibilities include leading application design, collaborating with teams, and modernizing legacy systems. The company offers perks like annual leave, private medical insurance, and Disney discounts.

Benefits

25 days annual leave

Private medical insurance & dental care

Free Park Entry for family and friends

Disney Discounts

Complimentary Disney+ Subscription

Excellent parental leave

Access to Employee Resource Groups

Qualifications

• Strong expertise in C# and ASP.NET MVC 5 required.
• Experience with CI/CD pipelines and DevOps tools.
• Proven track record in bespoke eCommerce applications.

Responsibilities

• Lead design and development of web applications.
• Collaborate with teams to deliver technical solutions.
• Participate in architectural discussions and propose improvements.

Skills

C#

ASP.NET MVC 5

SQL Server

Entity Framework

RESTful API design

Object-Oriented Programming

Agile methodologies

Git

Tools

GitLab

Azure DevOps

Jira

Job description

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

As a Senior Web Application Developer, you will lead the design, development, and optimisation of scalable, secure web applications that deliver seamless user experiences across multiple platforms.

You’ll work closely with product, marketing, and technology teams to craft elegant technical solutions that bring Disney’s digital experiences to life, maintaining the highest standards of performance, security, and reliability.

The successful candidate will bring deep technical expertise, creative problem-solving, and a forward-thinking mindset, contributing to our long‑term journey toward a fully cloud‑ready environment. You will also help shape best coding practices, support team growth, and foster a culture of continuous improvement and technical excellence.

Develop and maintain complex web solutions using ASP.NET MVC 5, C#, and React, delivering high‑quality, scalable, and maintainable code.

Contribute to the migration and modernisation of legacy systems, ensuring clean architecture, efficient implementation, and future scalability.

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.

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

Professional development experience, with a strong track record in bespoke eCommerce or enterprise web applications.

Proven expertise in C#, ASP.NET MVC 5, SQL Server, and Entity Framework.

Strong understanding of Object‑Oriented Programming, SOLID principles, and common design patterns.

Experienced in RESTful API design and integration (SOAP and XML/XPath knowledge desirable).

Skilled with IoC containers (Autofac, Ninject) and unit testing frameworks (NUnit, Moq, SpecFlow).

Proficient in source control and dependency management (Git, GitFlow, SourceTree, NuGet).

Hands‑on experience with CI/CD pipelines and DevOps tools (GitLab, Azure DevOps, TeamCity, Cake, Octopus).

Working knowledge of Agile methodologies (Scrum/Kanban) and issue tracking systems (Jira).

Strong analytical and troubleshooting skills with proven experience in application and database performance tuning.

Experience with enterprise CMS platforms (e.g., SDL Tridion) beneficial.

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.