André.
Freelance Sitecore & .NET Developer
24 years of enterprise web development expertise.
Specialized in Sitecore XM/XP, .NET Core, and Azure DevOps. I help organizations modernize legacy systems and build scalable cloud-native solutions.
What I Do
Sitecore Development
Deep expertise in Sitecore XM/XP 7-10.4, JSS, and XM Cloud migrations. Helix architecture, xDB personalization, multi-site setups, and Glass Mapper integrations.
Full-Stack .NET
Complete .NET evolution from Web Forms to .NET 9. RESTful APIs, clean architecture, Entity Framework, AutoMapper, and comprehensive unit testing with best practices.
Azure & DevOps
Azure App Services, Key Vault, Application Insights, and Managed Identity. CI/CD pipelines in Bicep and YAML, infrastructure as code, and automated deployments.
AI & Automation
RAG pipelines with OpenAI and pgvector, Python scripting for rapid prototyping, Playwright for testing and web scraping. This site was built in one day using AI-assisted development.
Featured Work
CZ - Sitecore 10.4 Modernization
Led .NET 8→9 migration with zero downtime, integrated GraphQL navigation and Blue Billywig video platform, mentored junior developers and established PR review standards.
De Goudse - XM Cloud Migration
Technical lead for XP→XM Cloud upgrade with <4h downtime. Reduced disaster recovery RTO from 24h to 2h, improved code quality by 35% through rigorous PR reviews.
AON - Greenfield Headless Platform
Built multi-country Sitecore JSS + Vue.js platform from scratch. Launched 8 country sites in 6 months, 60% payload reduction via GraphQL, deployment time cut from 2h to 15min.
Have a project in mind?
I'm always open to discussing new opportunities, interesting projects, or partnerships.