Full Stack Software Developer at Telekom Malaysia

Mobile App Developer (Flutter) • Led end‑to‑end Flutter delivery from mockups to production (design → implementation → CI/CD → storeready builds) • Implemented E2E test suite (unit tests, integration test) and integrated tests into CI to ensure release stability (tests: 700+; coverage: ~60%) • Built mobile CI/CD pipeline (automated builds, signing) increasing release reliability • Implemented payment flow and backend integration; validated success & retry logic Full Stack Developer (Web & Platform) • Owned feature lifecycle: user requirements → development → enhancement → user acceptance testing for internal web modules • Refactored Angular app into lazy‑loaded modules and componentized UI to reduce initial load and simplify maintenance • Built and maintained RESTful backend services with Node.js (Express), supporting core features and integrations • Deployed observability (Prometheus + Grafana) with dashboards & alerts, cutting MTTR from ~3h → ~1h • Implemented RBAC across frontend route guards and backend policies Data / ETL & Reliability • Engineered TypeScript ELT pipeline (300k–600k rows daily) reducing ingestion 10 min → <10 s (~60×) and eliminating manual reconciliation (10 hrs/week saved) • Added unit & integration tests for ETL; integrated pipeline into CI (coverage: ~90%) • Diagnosed and fixed critical memory leak via heap profiling (peak >8 GB → <4 GB), preventing service crashes and improving uptime by ~5% • Tuned DB queries and applied indexing to reduce p95 latency from ~3000 ms → ~900 ms (~300%) • Implemented automated database backups and recovery drills (frequency: dailly; retention: 30 days); validated RTO ~3 hours and RPO ~1 day via 3 dry runs • Established failover & restore runbooks and maintained system documentation (architecture, runbooks, troubleshooting guides) at OneDrive for on‑call and handover