Worked on internal tooling for automated report generation and data processing pipelines.
What I did
Joined the backend team for a 3-month internship focused on internal developer tooling. The main project was a report-generation service that aggregated data from multiple internal sources into structured outputs for the business team.
- Developed REST APIs using Spring Boot for internal data processing workflows
- Integrated with PostgreSQL for persistence and optimized slow queries with proper indexing
- Containerized services using Docker and contributed to GitLab CI pipeline improvements
- Participated in code reviews and Agile sprint ceremonies
- Wrote unit and integration tests using JUnit 5 and Testcontainers
Key Learnings
Working in a professional team environment taught me a lot about code quality standards, the importance of documentation, and how to communicate technical trade-offs clearly. I also got hands-on experience with production database optimization for the first time.