Software Development Intern · HPS
Aug – Sep 2026Hightech Payment Systems · PowerCARD v4, payment card platform used by banks · via 01Talent
- Developed and maintained Java / Spring Boot services in a large multi-module Gradle monorepo built on microservices.
- Set up a new service end to end: SQL schema and Liquibase migrations, JPA/Hibernate composite keys, CRUD service and controller layers, API contracts.
- Shipped bug fixes and features to production on PowerCARD releases 4.3.0 and 4.2.5.
- Improved batch performance by moving OpenSearch writes to event-based ingestion through Fluent Bit.
- Built Docker images and deployed to Kubernetes; debugged startup failures and analysed performance with Grafana, JProfiler and AWS CloudWatch.
Java · Spring Boot · JPA/Hibernate · Liquibase · Gradle · OpenSearch · Fluent Bit · Docker · Kubernetes · Grafana