Worked on supporting the core LDAP identity database for AzureAD (Office365 authentication and on-prem Active Directory).

• Implemented performance optimizations in the ldap query processor.

• Built a version of wldap32 that has a true multi-threaded mode.

• Implemented configurable limits to help prevent the database from reaching overload due to some ldap-specific semantics surrounding concurrent database transactions conflicting with each other.

• Implemented aggregate statistics across all of the tracing in the codebase.

• Performed time-sensitive analysis of code, crash dumps and log files to debug live production issues.

• Supported an internal team on planning the rollout of these changes.

• - Prototyped, provided technical sales support and Implemented a call screening solution used by a major UK telecom

• - Architected, prototyped and spec'd the low level details for a database and realtime query solution for "Scam Likely" that's currently in use at T-Mobile

Foundation team (Core Framework). Microsoft Business Solutions, Dynamics AX

• - Debugged performance and business impacting/blocking issues on several customer systems

• - Re-wrote and refactored major parts of the metadata framework for Dynamics AX, built migration tooling to prevent the requirement of supporting the legacy framework.

• - Re-Imagined metadata extensibility, created a new model for isolated metadata extensibility (2 patents pending, named with other contributors)

• - Jointly built several prototypes including a cross compiler and object remoteing framework

• - Implemented a strategy for faster serial execution execution and restore of SQL dependent data-centric tests

• - Reduced server production startup time, while maintaining compatibility for legacy code

• - Refactored a native interpreter's memory management for increased debug-ability, stability, memory footprint and correctness.

• Automated system deployment, patching and monitoring for 300+ linux/unix systems.

• Actively responded to alerts on a subset of these systems that were expected to be highly available.

• Managed an MIT kerberos + Active Directory configuration.

• Managed backups for systems with non-volatile storage requirements.

• Tested, Stabilized, and Customized linux system distributions for use in our environment.

• Automated user provisioning. Built tools for delegating exception handling around our user provisioning process.