Freelance Umbraco / Kentico / SharePoint Developer | C# .NET | 25+ years’ experience | Available for short & long-term projects I’m a part-time/freelance C# / .NET Developer and Consultant with 27 years’ experience delivering end-to-end web solutions for clients across the UK and Europe. I specialise in Umbraco (v4–15, including Workflow automation), Kentico (v12–13), and SharePoint Online, creating scalable, secure systems integrated with SSO (OAuth2, OpenID Connect, SAML, Azure AD) and enterprise Identity & Access Management (IAM). My background spans full-stack development (HTML5, CSS3, Bootstrap, React, TypeScript, C#.NET MVC, .NET Core, REST APIs, GraphQL, SQL Server) and DevOps (Azure, AWS, Windows Server/IIS, TeamCity, Octopus, Docker). I’m equally comfortable designing technical architectures, writing complex back-end logic, or mentoring development teams through delivery. In 2025, so far I’ve: - Built and maintained large-scale Umbraco and Kentico platforms for enterprise clients - Designed secure cross-platform authentication using SSO/IAM standards - Delivered intranet and SPFx projects using Microsoft Graph and Power Platform - Led digital projects from brief to launch, balancing business, UX, and technical goals Currently, I work with clients on a freelance / part-time basis through Perrito Media, supporting new builds, migrations, and ongoing development while also collaborating on event-tech and AI SaaS projects.…

Alicia Butler

Freelance Umbraco / Kentico / SharePoint Developer | C# .NET | 25+ years’ experience | Available for short & long-term projects I’m a part-time/freelance C# / .NET Developer and Consultant with 27 years’ experience delivering end-to-end web solutions for clients across the UK and Europe. I specialise in Umbraco (v4–15, including Workflow automation), Kentico (v12–13), and SharePoint Online, creating scalable, secure systems integrated with SSO (OAuth2, OpenID Connect, SAML, Azure AD) and enterprise Identity & Access Management (IAM). My background spans full-stack development (HTML5, CSS3, Bootstrap, React, TypeScript, C#.NET MVC, .NET Core, REST APIs, GraphQL, SQL Server) and DevOps (Azure, AWS, Windows Server/IIS, TeamCity, Octopus, Docker). I’m equally comfortable designing technical architectures, writing complex back-end logic, or mentoring development teams through delivery. In 2025, so far I’ve: - Built and maintained large-scale Umbraco and Kentico platforms for enterprise clients - Designed secure cross-platform authentication using SSO/IAM standards - Delivered intranet and SPFx projects using Microsoft Graph and Power Platform - Led digital projects from brief to launch, balancing business, UX, and technical goals Currently, I work with clients on a freelance / part-time basis through Perrito Media, supporting new builds, migrations, and ongoing development while also collaborating on event-tech and AI SaaS projects.…

Available to hire

Freelance Umbraco / Kentico / SharePoint Developer | C# .NET | 25+ years’ experience | Available for short & long-term projects

I’m a part-time/freelance C# / .NET Developer and Consultant with 27 years’ experience delivering end-to-end web solutions for clients across the UK and Europe.

I specialise in Umbraco (v4–15, including Workflow automation), Kentico (v12–13), and SharePoint Online, creating scalable, secure systems integrated with SSO (OAuth2, OpenID Connect, SAML, Azure AD) and enterprise Identity & Access Management (IAM).

My background spans full-stack development (HTML5, CSS3, Bootstrap, React, TypeScript, C#.NET MVC, .NET Core, REST APIs, GraphQL, SQL Server) and DevOps (Azure, AWS, Windows Server/IIS, TeamCity, Octopus, Docker). I’m equally comfortable designing technical architectures, writing complex back-end logic, or mentoring development teams through delivery.

In 2025, so far I’ve:

  • Built and maintained large-scale Umbraco and Kentico platforms for enterprise clients
  • Designed secure cross-platform authentication using SSO/IAM standards
  • Delivered intranet and SPFx projects using Microsoft Graph and Power Platform
  • Led digital projects from brief to launch, balancing business, UX, and technical goals

Currently, I work with clients on a freelance / part-time basis through Perrito Media, supporting new builds, migrations, and ongoing development while also collaborating on event-tech and AI SaaS projects.

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Skills

Experience Level

HTML5
Expert
C#
Expert
JavaScript
Expert
ASP.NET
Expert
.NET
Expert
TypeScript
Expert
Sharepoint
Expert
AWS
Expert
Azure
Expert
GraphQL
Expert
Docker
Intermediate
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Language

English
Fluent

Work Experience

Freelance Web Developer/Consultant at Perrito Media
February 28, 2013 - October 29, 2025
Providing freelance development and consultancy to digital agencies, private companies, and charities — delivering secure, scalable web platforms using C#.NET, Umbraco (v7–15), Kentico (v11–13), and SharePoint Online. Experienced in SSO integration (OAuth2, OpenID Connect, SAML, Azure AD) and Identity & Access Management (IAM) for enterprise environments. Building custom Umbraco Workflow implementations for editorial approvals, automated notifications, and multi-role publishing pipelines. Agile project planning (user stories, sprint planning, daily stand-ups), DevOps/server security (Azure, AWS, dedicated hosting), and domain administration. Recent projects include: - Rebuilding Van Werven’s corporate site in Umbraco 15 with a custom backoffice (TypeScript, React) and product database integration. - Developing SharePoint intranet components for Ekco, LGC, and Kinly, including Graph-connected web parts and PnPJS integrations. - Creating an AI-powered volunteer management system with QR code scanning and Blazor dashboard for large-scale events Skills: ASP.NET Core · Microsoft SQL Server · Azure SQL · Umbraco · Sharepoint Framework (SPFx) · Kentico · .NET Core · Microsoft Dynamics AX · ASP.NET MVC · Python (Programming Language) · Microsoft Dynamics · Microsoft 365 · GraphQL · Microsoft Power Apps · Transact-SQL (T-SQL) · Communication · Teaching · Problem Solving · C# · Custom Templates · Software Development
Senior .Net Web Developer at Cedar Communications
April 1, 2021 - March 31, 2022
Cedar. Part of the BBDO/Omnicom Group. Digital development and support for British Airways and Tescos using C# ASP.Net MVC Umbraco 4/7/8 Created API's (WebAPI .NET framework) for interactive widgets and custom table using EF and NPoco Set up Azure dev-ops CI/CD pipelines IIS load balancing setup Provided dev-ops support for clients using Azure and Rackspace Creating web modules Cedar. Part of the BBDO/Omnicom Group. Digital development and support for British Airways and Tescos using C# ASP.Net MVC Umbraco 4/7/8 Created API's (WebAPI .NET framework) for interactive widgets and custom table using EF and NPoco Set up Azure dev-ops CI/CD pipelines IIS load balancing setup Provided dev-ops support for clients using Azure and Rackspace Creating web modules Skills: .NET Core · Transact-SQL (T-SQL) · Communication · Problem Solving · Software Development
.Net Web Developer at Durable Digital
February 1, 2020 - March 31, 2021
Developing sites in Umbraco 7/8/Cloud. DevOps with Azure, Octopus and TeamCity Developing Sharepoint Online sites with the Sharepoint Framework (SPFx) and integrating with Azure AD, PowerApps, Flow and Forms. Creating custom web parts and extensibility libraries using React, Typescript and Handlebars. Powershell scripting and management of Office365 environments. Creating technical documentation in Confluence. Developing API integrations using RestSharp Developing sites in Umbraco 7/8/Cloud. DevOps with Azure, Octopus and TeamCity Developing Sharepoint Online sites with the Sharepoint Framework (SPFx) and integrating with Azure AD, PowerApps, Flow and Forms. Creating custom web parts and extensibility libraries using React, Typescript and Handlebars. Powershell scripting and management of Office365 environments. Creating technical documentation in Confluence. Developing API integrations using RestSharp Skills: Microsoft Power Platform · Microsoft 365 · Microsoft Power Apps · Transact-SQL (T-SQL) · Communication · Problem Solving · Software Development
Information Assistant / Website Developer (Contract) at NHS
June 30, 1997 - March 31, 1998
Created reports for hospital consultants and GP fund holders at Darlington Memorial Hospital using Microsoft Access and SQL. Designed, developed and maintained intranet website in HTML

Education

Add your educational history here.

Qualifications

Umbraco Certified Professional
January 11, 2030 - October 29, 2025

Industry Experience

Computers & Electronics, Software & Internet, Professional Services, Media & Entertainment
    uniE621 Luxury travel (Umbraco)
    Providing freelance development and consultancy to international luxury travel company since 2017 using C.Net, Umbraco 7 and SQL Server dotnet umbraco sqlserver…
    uniE621 Pet Insurance (Umbraco headless, GraphQL, .Net Core, Gatsby)
    Part of a small team developing the backend of a website using .Net Core, Umbraco 12 (headless) and GraphQL to be used by a Gatsby/React frontend for a large pet insurance client Developed an API security solution using Identity Server to receive communication from a Gatsby front end and encrypt the api key umbraco graphql netcore webdeveloper…