Shail Pujan

I’m a software engineer building and validating distributed systems—especially where reliability and failure recovery matter. Through open source mentorship and hands-on projects, I’ve worked on production-scale distributed SQL and storage concepts while strengthening my debugging and testing discipline.

In the LFX Mentorship Program (CNCF), I contributed to Vitess by debugging replication inconsistencies and authoring test cases aligned to production failure scenarios. I developed SQL-based debugging examples and shell scripts for troubleshooting query performance bottlenecks and sharding recovery, then participated in code reviews to resolve Vitess issues that improved reliability and strengthened debugging workflows.

I also contribute to real-world messaging reliability as an Ushahidi contributor, leading black-box testing for messaging workflows and implementing Cypress to accelerate testing and improve uptime. On my own, I build distributed infrastructure—like VaultFS, a Go-based distributed KV store with WAL persistence, failover, Kafka replication events, and Prometheus visibility—while delivering product-grade engineering in Codexphere, a collaborative code editor optimized for low-latency multi-user interaction.