Web Application Developer

Web Application Developer

Posted Today by Haystack

Apply
£538 Per day
Inside
Hybrid
London, England, United Kingdom
Apply
Active Server Pages (ASP) Agile Methodology Application Programming Interface (API) ASP.NET ASP.NET MVC 5 Azure DevOps C# (Programming Language) Cloud-Native Architecture Cloud Computing Cloud Technology Content Management Systems Continuous Integration and Continuous Delivery DevOps Entity Framework File Servers Gitlab Microsites Microsoft Azure Microsoft SQL Servers Mobile Application Development MOQ (Software) Mvc.net Ninject React.js RESTful API Secure Coding Software Development Solid Principles Specflow SQL (Programming Language) Teamcity Tridion Unit Testing Web Application Development Web Applications

Summary: The Senior Web Application Developer role involves leading the modernization of a major travel e-commerce platform, transitioning to a cloud-native architecture. The position requires expertise in ASP.NET MVC 5, C#, and React to develop scalable web applications. The developer will also manage CI/CD pipelines and mentor mid-level developers while ensuring high-quality code delivery. This role offers a lucrative daily rate and hybrid working arrangements in West London.

Key Responsibilities:

  • Lead the design and development of complex e-commerce features using ASP.NET MVC 5, C#, and React components.
  • Spearhead the migration toward a cloud-ready architecture (Azure/AWS roadmap).
  • Architect and integrate robust RESTful APIs and handle legacy SOAP WebServices and XML/XPath integrations.
  • Drive technical excellence through code reviews, architectural discussions, and mentoring mid-level developers.
  • Proactively manage CI/CD pipelines using GitLab, Azure DevOps, and TeamCity.

Key Skills:

  • 8+ years of professional experience in digital development with a focus on bespoke e-commerce or enterprise-grade web applications.
  • Expert-level proficiency in C#, ASP.NET MVC 5, SQL Server, Entity Framework, and modern React development.
  • Strong technical foundation in OO design patterns, IoC containers, and unit testing frameworks.
  • Hands-on experience with DevOps tools and modern CMS platforms.
  • Proven ability to deliver high-quality, secure code in Agile environments.

Salary (Rate): £538 daily

City: London

Country: United Kingdom

Working Arrangements: hybrid

IR35 Status: inside IR35

Seniority Level: Senior

Industry: IT

Detailed Description From Employer:

Senior Web Application Developer | £425 - £538

We're working with an international travel and holiday e-commerce leader on this exciting opportunity. They are a major player in the global leisure market, currently modernizing their digital landscape to support high-traffic booking platforms and rich marketing microsites. We are seeking a heavyweight Senior Developer to spearhead a massive platform modernization project, transitioning business-critical e-commerce systems into a cloud-native architecture. You will be the technical engine behind scalable, secure web applications that power the vacation dreams of millions, utilizing a cutting-edge stack featuring ASP.NET MVC 5, C#, and React.

The Role

  • Lead the design and development of complex e-commerce features using ASP.NET MVC 5, C#, and React components to enhance platform performance.
  • Spearhead the migration toward a cloud-ready architecture (Azure/AWS roadmap) while ensuring clean, maintainable code following SOLID principles.
  • Architect and integrate robust RESTful APIs and handle legacy SOAP WebServices and XML/XPath integrations.
  • Drive technical excellence through code reviews, architectural discussions, and mentoring mid-level developers on best practices.
  • Proactively manage CI/CD pipelines using GitLab, Azure DevOps, and TeamCity to ensure seamless, stable release cycles.

What You'll Need

  • 8+ years of professional experience in digital development with a deep portfolio in bespoke e-commerce or enterprise-grade web applications.
  • Expert-level proficiency in C#, ASP.NET MVC 5, SQL Server, Entity Framework, and modern React development.
  • Strong technical foundation in OO design patterns, IoC containers (Autofac, Ninject), and unit testing frameworks (NUnit, Moq, SpecFlow).
  • Hands-on experience with DevOps tools (Octopus, Cake, GitFlow) and modern CMS platforms like SDL Tridion.
  • Proven ability to deliver high-quality, secure code in Agile (Scrum/Kanban) environments within a fast-paced travel/retail setting.

What's On Offer

  • Lucrative daily rate of £425 - £538 (Inside IR35) via Umbrella.
  • Hybrid working flexibility (3-4 days onsite) in a vibrant West London hub.
  • The chance to play a pivotal role in a global travel brand's cloud transformation journey.
  • Collaborative environment working on high-visibility, international digital products.

Apply via Haystack today!

Apply
Similar Jobs
Loading data...