At NIX Solutions, I migrated 15+ legacy batch jobs to Spring Batch and set up a Jenkins project to build, schedule, and run them. The work reduced nightly entitlement cleanup from ~20–30 minutes to 2–5 minutes.
On the Big Data Platform, I led the migration of a legacy CLI application to a Spring Boot REST architecture, enabling third-party systems to trigger and manage processes. I refactored 20+ command flows into Spring-managed services, added unit tests, and mentored a junior engineer during the migration.
On the Insurance SaaS Platform, I developed and maintained backend features and REST APIs across most of a 15+ microservice platform backed by MongoDB and Kafka. I also documented APIs with OpenAPI/Swagger and configured Spring Security for authentication and authorization.
At NIX Solutions, I delivered 20+ internal lectures on Spring Batch and SQL and mentored 5+ junior developers. In a later SQL Developer assignment for the HR & Medical System, I tuned Oracle queries and indexes, cutting job runtime from ~2–5 minutes to 10–30 seconds.
