Darrell Tang Email & Phone Number

San Diego, Ca, Us

• Wrote, troubleshot, & maintained sophisticated Azure infrastructure using prebuilt, internally-maintained Terraform Modules. Modules included Azure Kubernetes, Service Bus, Log Analytics, Azure Container Registry, Cost Management Budgets & Alerts• Utilized Terraform-bootstrapped ArgoCD instance within AKS cluster to deploy Helm chart for application• Configured Horizontal Pod Autoscalers based on production traffic patterns to minimize cost and efficiently utilize resources in-cluster• Spearheaded a 6-month project to migrate complex Argo Workflows & Argo Events Batch Processing system from one data center to another, allowing automated billing of client batch requests• Reverse engineered existing architecture of nested Helm charts for replication & created detailed documentation using MermaidJS for architecture and ongoing support• Transitioned ownership of the system to another team while training & mentoring team leads to become SMEs• Rewrote & migrated all Gitlab CI/CD Pipelines for use in Github Actions• Created & managed new Jenkins Pipelines for Github repositories to build and package code• Updated Dockerfile images to upgrade underlying software• Scoped, planned, & executed plan to manually rotate on-prem Kubernetes CA & Certificates to ensure continued cluster functionality before expiration dates• Updated code for deploying on-prem VM-backed Kubernetes clusters using Terraform, Flatcar Linux, Hyperkube, and Cobbler• Scoped and executed Kubernetes version upgrades across non-prod & production clusters with zero downtime for application workloads.• Scoped and executed NetApp Trident version upgrades across non-prod clusters for persistent storage backends to Kubernetes clusters.• Used existing Ansible playbooks to provision new VM builds for various internal teams• Used Gitlab Pipelines to patch production & non-prod vm operating systems

San Diego, Ca, Us

• Developed Terraform Module monorepo for rapid deployment of AWS resources• Developed Terraform to deploy AWS resources for platform deployment including: VPC, Subnets, Security Groups, Peering Connections, Routes, ec2 instances• Used Terraform to create Chef configuration for provisioning & bootstrapping of ec2 instances• Utilized on-prem Terraform Enterprise to coordinate build & development of Terraform resources with team members• Collaborated with team members using Bitbucket/Git to coordinate work in branches and pull requests utilizing infrastructure-as-code best practices• Participated in Sprint based development workflow using Jira tickets to organize work (epics, stories, tasks, etc.)• Deployed microservices-based application using Azure Devops on Azure Service Fabric clusters • Ensured http availability checks for microservices were updated across numerous dev and production environments monitored by Azure Application Insights• Developed Docker container to consume Vault secrets for encryption by an in-house command line application• Developed Helm chart to deploy Docker container as Kubernetes job for ad-hoc encryption of secrets to be stored in Vault

San Diego, Ca, Us

• Administered on-premise Docker Swarm clusters to manage services & container deployments• Wrote a web app in Golang which authenticated to Jira, parsed tickets from REST API and formatted resultant text required for SaaS deployments; app was built and compiled into a Docker container• Wrote a command line utility in Golang to simplify ssh key installations to an ftp server• Developed Terraform to deploy 3 node Docker Swarm cluster in VMWare using Chef to bootstrap nodes• Used Jira ticketing to track ticket queues and work to be done• Partially automated DB statistics report by using Python to concatenate multiple csv files decreasing time to generate the report by 85% (from 4 hours spent to 30 min spent)• Modified configuration files for various services on linux (ftp, apache, etc.)• Administered Vmware ESXi infrastructure using vSphere 6.0 web interface• Ensured timely OS updates on a monthly basis for ~500 CentOS/RHEL servers using Spacewalk• Configure SSH key authentication for SFTP endpoints using centralized Chef configuration

San Diego, Ca, Us

Worked on Operations team for a global Software-as-a-Service platform providing financial services to enterprise clients. • Automated routine tasks using Ansible, Powershell and Bash when appropriate. • Wrote a command line utility in Go to simplify ssh key installations to an ftp server. • Worked with devops to develop Terraform scripting to deploy 3 node Docker Swarm cluster utilizing VMWare, DNS, AWS S3, remote- and local-exec providers. • Executed and followed up on existing Incident Management process to enroll involved teams and notify relevant parties • Used Jira ticketing to track ticket queues and work to be done • Partially automated DB statistics report by using Python to concatenate multiple csv files decreasing time to generate the report by 85% (from 4 hours spent to 30 min spent) • Monitored production CentOS/RedHat Linux infrastructure using CheckMK and Ganglia in order to proactively remediate issues • Administered storage volumes by clearing extraneous log files and extending filesystems when necessary • Modified configuration files for various services on linux (ftp, apache, etc.) • Used prebuilt Rundeck jobs for SAN and log management • Administered Vmware ESXi infrastructure using vSphere 6.0 web interface • Deployed software product using homegrown deployment software • Used VSCode IDE to manage Gitlab repositories for homegrown deployment software and Chef recipes • Used Jenkins to run builds/deployments for Chef recipe modifications • Ensured timely OS updates on a monthly basis for ~500 CentOS/RHEL servers using Spacewalk • Configured SSH keys for authentication by modifying Chef recipes in Gitlab repositories • Configured GPG keys for encryption/decryption of financial data • Administer cloud AWS infrastructure using the AWS console to verify EC2 instance statuses • Linux utilities: SysV service management, LVM, lvextend, df, du, vi, sed, grep, less, cat, scripting

Poway, California, Us

Poway, California, Us

Provided outsourced IT service, support, security and leadership for small and medium-sized businesses in the greater San Diego area. Managed entire IT environments for more than 65 companies, ranging from 10- 250 staff.• Led team of 10 for managed service provider with small to medium sized Biotech and medical clients.• Responsible for leading larger change control projects related to network administration.• Administrated clients network, managed servers, utilized Windows PowerShell command line.• Oversaw and created/managed automated attendants and recordings with automated script.• On-boarded new users accurately and reduced processing time from eight hours down to 10 minutes.• Investigated, developed, and solved process inefficiencies, including client correspondence.• Managed large-scale hardware and software upgrade projects relating to network systems.• Mapped out current infrastructure, partnering with vendors to develop deployment plan to execute rollout

San Diego, Ca, Us

Responsible for defining and executing the plans for the development of the technology and process requisites to meet current and future product requirements, implement this technology in approved product development programs, and provide appropriate production and field support as required.• Managed and supported a Cisco Network; certified in Cisco CCNA, CCNA Voice, and CCENT.• Maintained above average uptime on network resolving issues in less than 1 day.• Maintained maximum activity and network functionality and investigated quality issues.

San Diego, Ca, Us

Sre

Information Technology

Bachelor Of Arts (Ba), Interdisciplinary Computing And The Arts - Music