Himawan.
Independent IT professional with 8+ years of hands-on experience in server management, cloud infrastructure, and blockchain technology. Self-taught practitioner who has built a career through real-world experience.
8+
Years of Experience
50+
Servers Managed
100+
Clients Served
Work history.
Founder & Lead System Administrator
HyperFlow Network
Founded and operated a digital infrastructure services company providing VPS, hosting, WHM/cPanel management, and cloud solutions to 100+ clients.
- Architected and deployed multi-server environments using AlmaLinux and Rocky Linux
- Managed 50+ VPS instances across Contabo, DigitalOcean, and Google Cloud Platform
- Implemented automated backup systems and security hardening protocols
- Provided 24/7 technical support and infrastructure monitoring
- Built and maintained e-commerce platforms for digital product distribution
Blockchain Validator & Node Operator
Aptos Network & Various L1/L2 Chains
Operated validator nodes for major blockchain networks, contributing to network security and decentralization while generating significant returns.
- Ran Aptos validator node and earned 350,000,000 IDR (~$22,000 USD) in rewards
- Managed validator infrastructure with 99.9% uptime SLA
- Deployed and maintained nodes across multiple blockchain ecosystems
- Optimized server configurations for high-performance consensus participation
Independent IT Consultant & DevOps Engineer
Freelance / Self-Employed
Started career as a self-taught IT professional, providing server management, web development, and technical consulting services.
- Set up and configured Linux servers (Ubuntu, CentOS, AlmaLinux) for clients
- Developed web applications using PHP, Node.js, and Python
- Managed DNS, SSL certificates, and domain registrations
- Built automated deployment pipelines using Docker and shell scripts
- Provided remote technical support and server troubleshooting
Technical skills.
Programming Languages
Python (Advanced), Node.js (Advanced), PHP (Advanced), Golang (Intermediate), Rust (Intermediate), HTML/CSS (Advanced)
Operating Systems
Ubuntu Server (Expert), AlmaLinux (Expert), Rocky Linux (Advanced), CentOS (Advanced)
Tools & Platforms
WHM/cPanel (Expert), Docker (Advanced), Google Cloud Platform (Intermediate), AWS Cloud9 (Advanced), Nginx, Git
Core Competencies
Server Security & Hardening, Performance Monitoring, CI/CD Pipelines, Backup & Disaster Recovery, DNS & Domain Management, SSL/TLS Configuration, Container Orchestration, Blockchain Node Operations
Featured projects.
Aptos Validator NodeRevenue: 350,000,000 IDR
Deployed and operated a high-performance validator node on the Aptos blockchain network. Achieved consistent 99.9% uptime and earned significant validator rewards.
HyperFlow Digital Store
Built a full-featured e-commerce platform for selling digital products including VPS, hosting, RDP, and premium accounts. Integrated with Telegram API for automated order processing.
Multi-Server Infrastructure
Designed and maintained a multi-server infrastructure handling 50+ VPS instances across multiple cloud providers. Implemented automated provisioning, monitoring, and scaling solutions.
Cloud9 Development Platform
Set up and managed Cloud9 IDE environments on custom servers, providing remote development workspaces for teams and individual developers with secure access controls.
Foundation.
Rekayasa Perangkat Lunak
SMK Ibu Pawiyatan Yogyakarta
Software Engineering
Studied software engineering fundamentals including programming, database management, networking, and system administration. Built a strong foundation in IT that launched an 8+ year independent career.
Let's work
together.
Open for full-time positions and contract work. Available to start immediately. Based in Yogyakarta, Indonesia — remote-friendly worldwide.
Yogyakarta
Digital Nusantara