Fullstack Backend Developer with C# .net

Onyx-Conseil; Greater London; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

Onyx-Conseil is seeking a Fullstack Backend Developer with C# .NET to drive the ongoing development of an eCommerce site and internal applications for a travel company. You will lead the eCommerce tech direction and collaborate with frontend and design to deliver improved UI/UX, automate processes, and implement automated testing.

The role requires strong ASP.NET/C#, HTML/JS, and database experience, with familiarity in Umbraco, Azure, REST APIs, and CI/CD pipelines.

Qualifications

• Strong knowledge of ASP.NET and C#, underpinning eCommerce and internal apps.
• Frontend and UI/UX collaboration with designers.
• Experience with cloud services (Azure) and deployment pipelines.
• Familiarity with REST APIs, OpenAPI/swagger, and data formats (JSON/XML/SOAP).
• Experience with CI/CD tools and automated testing.
• Understanding of SOLID principles and modular architecture.

Responsibilities

• Lead eCommerce web and app development from a technical perspective.
• Collaborate with frontend and design to improve UI/UX.
• Analyze and propose improvements to existing features.
• Automate processes and implement automated regression testing.

Skills

ASP.NET

C#

HTML

JavaScript

jQuery

React Framework

MS SQL Server

Mongo DB

Elasticsearch

SOLID

Umbraco CMS

CI/CD

Git

GitHub

Team City

Octopus

Jenkins

Selenium

Azure

JIRA

Confluence

REST APIs

OpenAPI/swagger

JSON/XML/SOAP

PowerBI

PowerQuery

R

Tools

Azure

JIRA

Confluence

Job description

Fullstack Backend Developer with C# .net

Working as part of the Digital team, you'll be responsible for the ongoing development and improvements to an eCommerce website as well as other internal applications for this award-winning Travel Company.

You will be responsible for:

Leading the eCommerce web and application development from a technical perspective

• Collaborating with the front end developer and design resource to deliver improved UI & UX
• A problem solver - you'll need to be able to analyse and suggest improvements to existing website features
• Analysing and identifying ways to automate processes working alongside the business lead
• Implementing automated regression testing for the software developed

Skills and Experience:

• Excellent working knowledge of ASP.NET, C#, HTML, JavaScript, jQuery, React Framework, MS SQL Server, Mongo DB, Elasticsearch
• Understanding of SOLID development principles
• Worked previously on projects using the Umbraco CMS
• Continuous Delivery skills, tools and techniques (e.g. Git, Github, Team City, Octopus, Jenkins, Selenium, etc.)
• Familiar with Azure cloud services & setting up/managing resources/deploying apps
• Familiar with JIRA and Confluence
• Capable of working with (and developing) multiple (REST) APIs documented with e.g. OpenAPI/swagger and other API messaging formats e.g. JSON, XML, SOAP
• Experience of PowerBI, PowerQuery and R
• Experience of structured testing and quality assurance approaches (e.g. Test Driven Development and Behaviour Driven Development)
• A positive and cooperative individual who will work effectively across departments and within a team
• Worked in an agile/Kanban environment and familiar with JIRA and confluence
• Not afraid to challenge existing thinking in order to improve processes

The Client will consider candidates with solid Backend development skills without Umbraco.

The Client is based in Central London and this role will be working remotely.

The duration will be 3 months.