Job Description

Web Portal & API Developer /Software Developer

This opportunity is brand new, due to business growth and with a globally recognised leader in their sector.

Based in Leyland this role will see you develop your career within quite a unique sector.

Role Competencies

• Excellent debugging and analytical problem-solving skills
• Ability to understand complex, multi-service interaction flows
• Secure coding mindset and API-first approach
• Strong team collaboration and clear technical communication
• Ability to write professional, structured technical documentation

Required Technical Skills:

• C# (Strong proficiency)
• ASP.NET MVC or .NET Core Web API
• MVC concepts: Routing, Controllers, Filters, Middleware, Model Binding, DI
• Entity Framework Core:
  • DbContext, DbSet, OnModelCreating, LINQ
  • ADO.NET / Raw SQL execution experience (e.g., SqlCommand, Stored Procedures)
  • MS SQL Server, MySQL database experience
• HTML5, CSS3, JavaScript
• API & Integration:
  • REST API expertise (HTTP verbs, status codes, response handling)
  • Experience consuming APIs using HttpClient, RestSharp or equivalent
  • JSON serialization/deserialization (System.Text.Json / Newtonsoft.Json)
  • CORS, HTTPS, API Security best practices
• Version Control & Deployment
  • Git (Branching, Pull Requests, Conflict Resolution)
  • CI/CD experience (Azure DevOps, GitLab CI) (preferred)
  • Hosting experience with IIS or Kestrel
  • Docker basics (preferred but not mandatory)

Preferred Skills

• Fintech or payment API integration experience
• Cloud hosting basics (Azure, AWS)
• Experience with Webhooks or event-driven APIs
• Familiarity with structured logging (Splunk, ELK, Application Insights)
• API performance optimisation & rate-limiting handling

Key Responsibilities

• Develop and maintain web portals using ASP.NET MVC / .NET Core
• Design, build, and integrate REST APIs with internal and third-party systems
• Implement secure authentication mechanisms (JWT, OAuth2, API Keys)
• Integrate applications with relational databases using EF Core (DbContext, LINQ, Migrations)
• Debug end-to-end request flows(UI ? Controller ? API ? Database ? Response)
• Maintain and publish API documentation using Swagger/OpenAPI
• Ensure API security, reliability, and performance including:
  • Proper error handling
  • Retry logic
  • Logging
  • Timeouts
  • CORS configuration
• Collaborate with database, infrastructure, and QA teams throughout release cycles
• Participate in code reviews and follow Git best practices
• Contribute to CI/CD workflows and deployment processes

Education & Experience

• Bachelor's degree in Computer Science, Software Engineering, or related field
• 2+ years web portal development and API integration(3+ years preferred)

Adecco acts as an employment agency for permanent recruitment and an employment business for the supply of temporary workers. The Adecco Group UK & Ireland is an Equal Opportunities Employer.

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