Hieu Huynh

• Cover A-Z from kicking off startups: techstack, build infra from scratch to micro-services, tracing problems, maintain & scale.
• Taking strong responsibility/ownership during on-call periods, identifying failures and execute actions for resolving live issues: postmortem, prevention plan, achieve goals on basic SLA, uptime & MTTR.
• Producing DEVOPS evaluation standards for team: 4 levels (Assoc, Std, Senior, Principal), 17 technical topics and 70-mindset/30-tech ratio.

• Designing modular, pluggable & standardized IaC with bottom-up approach: base-network, base-env, webapp/services & internal tools.
• Working, contributing & guiding standards on ~20 terraform modules with ~30 ansible roles.
• Solid skills on GNU/Linux: top, vmstat, sysstat, iotop, dmesg, logger, mount/fstab, systemd, cron, supervisord, strace, time, tuning linux.
• Building & deep operating MySQL/MongoDB internals, replication, sharding, multi-AZ, HA failover, backup/restore on VM-based, RDS, CloudSQL, MongoDB Atlas with VPC peering.
• Designing networking: external/internal DNS, VPC, NAT, subnet, Cloudflare, ALB, NLB, Nginx, HAproxy, OpenVPN, Wireguard VPN, CDN.
• Building monitoring/logging/APM tracing: Sentry, ELK, telegraf, influxdb, grafana, NewRelic, monit, Cloudwatch, Datadog.

• Dockerize legacy vm-based webapps, building Dockerfile, docker-compose, microK8s, podman for local & testing environment
• Handling micro-services by using Kubernetes on GCP, evolved from DEIS architecture to GKE with Helm
• Operating multiple GKE clusters across regions (EU & ASIA)
• Buiding main routing application traffic by using nginx-ingress on both name-based & path-based
• Config Cloud Nat gateway on GKE for limiting outbound IP
• Scaling up/down services during high traffic ~50K rpm
• Streaming logs from stdout/syslog-protocol to Logentries & ELK
• Deploying & patching GKE deployment using jenkins, GCR with fully automation Gitflow

• Proposing HA & scalable scheduler/one-off architecture by using internal HTTP endpoint.
• Designing database migration process for multi tenancy DBs using pub/sub queue worker.
• Investigating performance bottle-neck: Redis caching, MySQL/MongoDB index & performance schema, tuning PHP/NodeJS backend.
• Guiding & setup Gitflow with auto CI/CD on multi clouds: Jenkins, Ansistrano, pipeline, parallel, webhook, cron, notification.

• Solid experience with GNU/Linux operating systems: dmesg, syslog, auth, ssh, service's log on hvm virtualization AWS.
• Knowledge on system's resource: cpu, mem, swap, cache, performance problems, OOM issue. Estimating and choosing the right instance/server and applicable use cases based on benchmarking and workloads.
• Deep understanding in MySQL master-slave, identify and cure slave lag, binlog, slow query logs.
• Manage deployment workflows on Jenkins CI, writing bash, python scripts and aws cli, s3.
• Optimize, handle webapp centralized log & data pipeline: Rsyslog, Logstash, Elasticsearch, Kibana.
• Experience with locust.io, gatling.io for performing screnario loadtest.
• Basic knowledge about ZAP, Burp and Metasploit for discovering vulnerabilities, pass security audit from Salesforce.

• Youtube player: using Youtube API.
• Network speed test: building from scratch by calculating download/upload time.
• Spinner game: learning animation.

Bachelor of Engineering in Computer Science

• Graduated with good grade and excellent thesis 9.5/10
• Working as a leader in most teams at university, having fluent presentation skills.
• Self-study in Udacity, Coursera, Codecademy, Channel9 MSDN.