Setup and maintained infrastructure, mostly on AWS, used EC2, RDS, Route53, Elasticache, ALB, S3, supported by Jenkins + Ansible as primary CD stack. Investing in infrastructure security from day-1, isolate Production, Staging, and Development VPC (server, database, etc) while still having a cross concern VPC for common tasks (CD, monitoring, error reporting, metric reporting) and stateless services (Geo-based services, optimization tools). Maintain balance between the product uptime (stability and reliability) and infrastructure total cost overhead to under 1.000 USD / month by several approach such as having an fallback abstracted services between open source and paid solution, making sure that the used infrastructure resource is on “just right” amount, store BLOB data in AWS S3 instead of costly database, making sure the team uses best practice in development to avoid unnecessary costs (properly index needed database columns, optimize algorithm for large iterations, etc) Built the 1st iteration of the product using Nuxt.js as frontend, Laravel as REST API gateway and Backend Admin portal, prepared the product to be API integration ready from day-1. Built and led the migration of Laravel based API to Go based API to increase API throughput, one of the reason is to support GPS tracker feature which posts 12 traces / minute / devices for approximately 500+ online concurrent devices. Maintain API uptime to 99.95% SLA, setup monitoring and alerting using Grafana + Prometheus + AWS Cloudwatch. Made strategic decisions along with co-founders on product, business, and development sides. Led a fully remote team of 4 engineers while making sure the team is properly engaged without doing micro management, scrum, daily standup, etc. Focused more on delegation, trust, and written communication skills (both for management and engineering team). Setup a standardized (fully remote possible) hiring flow.