AI, language-server and VS Code tooling for Business Central’s AL language

• Designed and implemented multiple APIs for the AL language's types
• Worked on integrating LLM powered agents to Business Central
• Decreased the memory footprint of the backend of our service by 20% through many memory optimizations, decreasing memory related incidents by 50% in the process
• Built an always-on profiler for AL code that is now the standard for all performance investigations
• Built a feature that converts any AL codebase (public symbols) to a Kusto database, allowing for fleet-wide static analysis
• Architected real-time diagnostics for the language server, reducing the inner loop from minutes to milliseconds
• Authored roslyn static code analyzers for the security subsystems of the language
• Worked on all levels of the compiler: tokenizer, parser, binding and emitting
• Implemented services for the AL VSCode language extension
• Implemented yaml pipelines in Azure DevOps for automated testing
• Performance expert for many hard production issues
• Mentored three junior engineers
• Maintained the public AL GitHub repo, coordinating fixes and reviews with external contributors.

Performance and reliability engineer for the AL runtime and its ORM layer that powers Business Central SaaS.

• Customers complained about the UI freezing. I fixed that by reducing stop-the-world GC pauses from 2 s to under 200 ms for the monolithic server, halving performance incidents year-over-year.
• Worked on SQL generation via our in-house ORM
• Integrated malware scanning for all uploaded files, achieving a security milestone planned for more than 5 years
• Tons of deep diving into T-SQL queries (SQL Server) and terrabytes of Kusto telemetry to troubleshoot customer issues
• Acted as the team’s concurrency expert.

Prototype framework for parallel binary-search trees via hardware transactional memory.

Demonstrated how to write performant AL code by explaining the process of converting AL code to executable C#.

Explained how to write optimized event-driven programming in AL based on how the runtime implements events.

Presented the always on performance profiler for Business Central