Cybersecurity SaaS protecting cloud workloads across AWS, GCP, and Azure. Built threat detection features ingesting events from AWS CloudTrail, GCP Audit Logs, and Azure Logs. Developed microservices in Java 21 (Spring Boot), Node.js, Python, and Go. Designed event-driven pipelines with RabbitMQ, set up GitOps deployments to EKS via ArgoCD, and built Grafana dashboards for service-level observability.

Digital lending platform for Southeast Asian markets. Worked on core backend services covering loan origination, credit decisioning, and payment processing. Designed microservices for disbursements, repayments, and payment scheduling. Built async processing pipelines on Kafka and set up distributed tracing with OpenTelemetry. Established testing practices: unit tests with Kotest, integration tests with TestContainers, end-to-end tests with WireMock.

EdTech company building learning management systems. Grew from senior engineer to head of engineering and led a team of 10. Defined technical roadmap and architectural decisions, built the LMS platform from scratch, and designed a CMS for content creators. Developed mobile apps with Jetpack Compose and Flutter. Migrated a monolith to microservices and set up full infrastructure: Docker Swarm, Kubernetes, Grafana/Prometheus/Loki.

Core banking software for payment processing and card management. Built features covering the full card lifecycle — issuance, limits, blocking, transaction history. Developed integrations with payment networks and processing centers. Tuned SQL queries and Hibernate mappings for high-load scenarios. Participated in on-call rotations, investigated production incidents. Mentored junior engineers.