Amsterdam, North Holland, Netherlands
Service Mesh
- Built, maintained, and improved the infrastructure: AWS, Kubernetes, Terraform, Keycloak, Vault, Nginx, Envoy. - Led project to integrate HashiCorp Vault to Picnic applications for secret management. integration for Java, Python, and legacy applications with 90+ developers and 10+ teams. - Implemented service mesh with Envoy proxy for custom authentication, routing, and metrics. - Actively executed cost optimization in every aspect, over one year, able to serve 3 times more traffic with only a 10% increase in computing resources bill. - Self-service deployment: allow developers to deploy and control their services with high-quality management
Responsibilities: - Conveyed business requirements to technical metrics. - Designed and implemented monitoring tools on Prometheus, Grafana, stream real time data from Google Analytics, Kafka, Fabric.io... in Go (Golang) and Python. Proactively prevented P0 incidents. Achievements: - Falcon: a seamless toolset to develop and deploy graphs, time series database from SQL queries, with only YAML config. - Lumberjack: distributed real time log parsing utilizes Kafka, Golang. Handling 200k-400k messages per second. - Proposed and implemented full continuous deployment with unit tests, functional tests, rolling deploy scripts, worked with 3 data centers and 6 ventures.
Triip is a travel platform, where everyone can introduce awesome experiences and find authentic local happy moments. Responsibilities: - Primarily designed and implemented site functions - Deployed and maintained high availability for multiple servers on Amazon Web Service (AWS) and Heroku. Be the on-call engineer. - Provided technical leadership to Junior Engineers, overall project architecture, processes. Achievements: - Had been running production system on several platforms for 3 years with 98% uptime. - Implemented a wide range of technologies: REST APIs, full-text search, error logging, email / SMS / push notifications / webhook, payment methods, Python 3 migration, message queue. - Implemented full continuous deployment, reduced time to production from days to minutes. Projects: - Triip 2.0: Solely worked with designer to bring new design to production. Contributed to 300% increase in sale and visit. - Triip 3.0 and 4.0: Eliminated large redundant legacy code by implementing unit tests for 95% of modules, removed 15% of code while enhancing overall functionality and speed. - Triip 5.0: completely redesigned system structure with modern architect consists of web and mobile applications. Deployed with zero downtime. Welcomed and trained new members. Kept delivering first-day-commit for every new members. - Triip 6.0: Integrated booking.com's database and services. Shifted tech stack to AWS with distributed, high availability, multiple services and scalable architecture utilizes Docker. Running a fleet of EC2 instances on AWS ECS.