Yosef A. Email & Phone Number

- Develop internal tools using Go and Python to optimize deployment (CI/CD) pipeline and tackle infrastructure related problems- Develop customized container base image (OCI format) for internal use, aiming for more secure and smaller size container image- Empowers the implementation of secure SDLC through automation of security testing and vulnerability transparency through centralized vulnerability management - Reducing operational cost by moving some development infrastructure from cloud compute engine/virtual machine to using K8s on bare metal and also by reducing IPv4 addresses subscription cost, moving to IPv6 addreses and cloud NAT (64 and 44) gateway model - Create and enforce KPI implementation for DevSecOps Team- Conducting user interview for DevSecOps Team candidate

- Managing and maintaining on-premise colocated server in Telkom NeucentrIX Karet Tengsin Data Center- Managing on-premise colocated NAS server in PT Bintang Komunikasi Utama (BKU) Halim Data Center- Managing company internet links using MikroTik Router for load balancing and failover scheme- Maintaining company LAN for reliability and security- Deploying company WLAN Access Points using Gigabit Ethernet PoE Backbone and configure them for 802.11r standard (Wi-Fi Fast Roaming) for seamless inter-AP transition- Deploying company internal DNS Server for blocking adult, scam, and phising website

Yogyakarta, Indonesia

- Collaborating and Lead DevSecOps Team to Implement GitOps principle to automate infrastructure and software deployment using Ansible, Semaphore, ArgoCD, and GitLab CI Integration.- Migrating some infrastructure from Public Cloud VM Instance to Unmanaged Colocated Bare Metal Server using Proxmox VE Hypervisor in order to save operational cost on growing server needs.- Create infrastructure/cloud proposal and deploy production app for client needs using Amazon Web Services (AWS) EKS (K8s), EC2 (VM Instance ARM based), S3 (File Storage), and RDS (PostgreSQL Database) in Singapore Region (ap-southeast-1). All of these using ARM based CPU in order to maximize cost to performance ratio.- Maintain existing production deployment on unmanaged/self-managed K8s Cluster

Jakarta, Indonesia

- Setting up CI/CD Pipeline using GitLab CI for integrated and faster software deployment. Also, implementing vulnerability scanning and automatic release tagging using Grype and GitLab Release-CLI in CI/CD pipeline.- Setting up production unmanaged Kubernetes (K8s) Cluster using Traefik Ingress Controller and ArgoCD Deployment.- Setting up Loki with Grafana Monitoring Stack for Golang Backend (GoFiber Framework)- Setting up Proxmox VE for Bare Metal Server and configuring NAT Networking for NAT VPS- Managing SQL and MongoDB Database Server for Production Deployment. Ensuring data is backed up everyday.- Setting up Hashicorp Vault for Secrets Management and integrate it with many services- Deploying and setting up ERP (Enterprise Resource Planning) software for Synapsis internal use.- Setting up a multiprotocol VPN Server for Synapsis internal use to ensure critical apps and infrastructure can only be accessed by right employee- Setting up OS Firewall and Edge Cloud Firewall to ensure security of critical company infrastructure.- Setting up Intrusion Prevention System (IPS) using CrowdSec to ensure security of critical company infrastructure.- Load testing using K6.io for calculating approximate nodes needed in K8s Production Cluster- Implementing Redis Cache for Async Web Backend in Golang GoFiber Framework to ensure optimal web apps performance- Creating Technical Documentation for DevSecOps Team

Yogyakarta, Indonesia

Teaching Chemistry Olympiad materials for Padmanaba Students

Yogyakarta, Indonesia

- Creating a ticketing website for GMCO annual concert event using Golang Backend (Gin Framework), NextJS Frontend, and ELK Monitoring Stack. - Setting up CI/CD Pipeline using GitHub Actions.- Managing infrastructure using BiznetGio Cloud Platform.

Yogyakarta, Indonesia

Deploying and managing web server for student's election using Nginx and PHP-FPM 7.4 running on Docker with AlmaLinux 8 host OS.

Bachelor'S Degree, Electrical Engineering, Cumlaude

Final CGPA: 3.72 / 4.00 Undergraduate Thesis Title: Implementation of Air Handling Unit System for Hospital Operating Theatre Room.

Math And Science, Third Best Graduate

Activities and Societies: Robotic Team, Science Olympiad Team, Aero Modelling Team