Cybersecurity SaaS protecting cloud infrastructure across AWS, GCP, and Azure. Developed threat detection features processing cloud events from AWS CloudTrail, GCP Audit Logs, and Azure Logs. Built microservices in Java 21 (Spring Boot), Node.js, Python, Go. Implemented event-driven integrations using RabbitMQ. Automated deployment pipelines in GitHub Actions. Configured ArgoCD for GitOps-based deployments to EKS clusters. Built Grafana dashboards for service health monitoring.

Digital lending platform serving Southeast Asian markets. Worked on core backend services handling loan applications, credit decisions, and payment processing. Designed microservices for payment operations – disbursements, repayments, payment scheduling. Built asynchronous processing flows using Kafka. Set up distributed tracing with OpenTelemetry. Established testing practices: unit tests with Kotest, integration tests with TestContainers, contract tests with WireMock.

EdTech company building learning management systems. Grew from senior engineer to head of engineering department. Led team of 10 developers. Defined technical roadmap and architecture decisions. Led development of LMS platform from scratch. Architected CMS for content creators. Developed mobile applications with Jetpack Compose and Flutter. Migrated from monolith to microservices. Set up infrastructure: Docker Swarm, Kubernetes, Grafana/Prometheus/Loki monitoring.

Banking software providing payment processing and card management for financial institutions worldwide. Developed features for card management system – issuance, limits, blocking, transaction history. Built integrations with payment networks and processing centers. Optimized SQL queries and Hibernate mappings for high-load scenarios. Participated in on-call rotations, debugged production issues. Mentored junior developers.