Software Developer

Adecco; Leyland; On-site; GBP 45,000 - 60,000; Full time

Job summary

A leading recruitment agency is looking for a Web Portal & API Developer to enhance their web portal and API integration services. The role requires expertise in C#, ASP.NET MVC, and REST APIs, along with strong debugging skills. Candidates should possess a relevant degree and have at least 2 years of experience in web portal development. The position is based in Leyland and offers opportunities for career growth within a renowned company. Apply now to join a dynamic team and influence the tech landscape.

Qualifications

• 2+ years experience in web portal development and API integration.
• Strong understanding of C#, ASP.NET MVC, and REST APIs.
• Ability to work collaboratively and debug complex request flows.

Responsibilities

• Develop and maintain web portals using ASP.NET MVC / .NET Core.
• Design and integrate REST APIs with internal and third-party systems.
• Ensure API security and performance, including error handling and logging.

Skills

C# (Strong proficiency)

ASP.NET MVC or .NET Core Web API

HTML5, CSS3, JavaScript

REST API expertise

Version Control & Deployment: Git

JSON serialization/deserialization

Debugging and problem-solving skills

Education

Bachelor's degree in Computer Science, Software Engineering, or related field

Tools

MS SQL Server

MySQL

Docker

Job description

Overview

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.

By applying for this role your details will be submitted to Adecco. Our Candidate Privacy Information Statement explaining how we will use your information is available on our website