Led end-to-end OWASP security audit across Java and C++ products; identified and prioritized vulnerabilities by threat level, reducing privacy and compliance exposure.

Designed and implemented a role-based access control system that closed a critical vulnerability allowing unauthorized full-environment access across a 30-person team.

Built a scalable Spring Boot RESTful API to expose order data, reducing manual lookup requests from downstream teams.

Replaced legacy string-based XML manipulation with a standardized library, eliminating data inconsistencies across a distributed order processing pipeline.

Added granular application and user-level audit logging, improving security observability and enabling faster incident diagnosis.

Developed early-stage 3D printing compatibility checks, catching parameter mismatches upstream and improving workflow reliability by 10%.

Refactored a monolithic 4-hour ETL pipeline into modular SQL, reducing runtime by 95% (to 12 minutes) and enabling multiple daily runs — unblocking 5 teams including the CEO and CTO.

Automated a manual investor reporting workflow that consumed 11 hours per week, cutting turnaround to 5 minutes and training teammates to own the system independently.

Built a real-time fraud monitoring and alerting system using Python and Apache Airflow with Slack-based transaction flagging, saving the data team 3 hours of daily manual review.

Partnered with the product team across an 18-month marketplace launch; analyzed pre- and post-launch platform behavior and contributed to a 59% increase in revenue.

Designed a behavioral customer profile scoring system used daily by 8 team members to support fraud detection and sales prioritization.

Built multi-timeframe customer support analytics enabling individual rep performance tracking, contributing to a 99% CSAT rating.

Rebuilt the frontend and backend of a broken Java desktop application; delivered a stable, cleaner version adopted by 25 team members and 3 external clients.

Integrated two blockchain protocols — Hyperledger Sawtooth and Hyperledger Fabric — enabling read/write transaction history for data integrity and investor-facing compliance.

Designed and documented a RESTful API suite for the web version of a desktop application, including JUnit test coverage and system architecture contributions.

Revamped the error messaging system, replacing vague codes with granular, categorized responses that improved debugging speed across a 25-person engineering team.

Developed test coverage for SQL injection and unauthorized access scenarios as part of end-to-end security testing.