I build
resilient network
infrastructure.
Hi, I'm Firman Gani Heriansyah. An IT Infrastructure Engineer specialising in network security, virtualization, and self-hosted environments. I turn complex network problems into robust scalable solutions.
150+
Students Assisted
90%
Cost Reduction
About Me
Computer Engineering Graduate
(GPA 3.75/4.00, Universitas Diponegoro)
I am an infrastructure engineer with deep hands-on experience designing and operating IT systems across virtualization, network security, and observability. I take pride in building self-hosted architectures that replace bloated public cloud dependencies, achieving tremendous cost reductions while ensuring top-tier reliability.
Backed by 7 years of IT support experience and direct instruction for over 150 students in Cisco networking labs, my approach to infrastructure is heavily focused on long-term operational efficiency, zero-downtime deployments, and least-privilege security controls.
Tech
Stack
These are the core tools, platforms, and languages I leverage across both my infrastructure engineering and software development projects.
Networking & Infrastructure
Software & Development
Featured Projects
Real-world infrastructure architectures, deployments, and observability stacks built for reliability and scale.
Self-Hosted Multi-VLAN Infrastructure
Built and maintain a self-hosted multi-VLAN environment running 6-10 services on repurposed hardware.
Freelance IT Support
Assisted across 30+ clients by resolving hardware and software faults across multi-vendor environments.
COLIVERA
Developing Colivera, an IoT-based water quality monitoring system that integrates sensor nodes with LoRa, ESP-NOW, using LilyGoT3 and Mappi32 as a Master-Slave Architecture system and deliver the data to cloud.
BalaiKU
Developed BalaiKU, a web-based community information system for RT 05 / RW 06 serving 300+ residents, centralizing neighborhood event scheduling and improving transparency through structured, accessible activity monitoring..
My Experience
A track record of stabilizing systems, guiding peers, and leading robust infrastructure architectures from the ground up.
IT Infrastructure Engineer
Homelab (Self Initiated)
Jan 2026 - Present- Migrating 6–10 services to self-hosted infrastructure on repurposed hardware, reducing operational costs by 90%.
- Designing Virtualized Router on a stick (ROAS), 5-VLAN segmented network with MikroTik and OPNsense.
- Over 3 months of continuous operation across all services, supported by real-time observability through Prometheus + Grafana.
Freelance IT Support
Freelance
Oct 2018 - Present- Assist across 30+ clients by resolving hardware and software faults across multi-vendor environments using AIDA64, HWMonitor, and CPU-Z.
- Designing and implementing backup and recovery plans across cloud and local storage, ensuring zero unrecovered data loss incidents in 7 years.
- Maintained a solid 97% customer satisfaction rate.
IoT Network Engineer
Evotech
Aug 2025 - Dec 2025- Architecting a LoRa + ESP-NOW master-slave wireless network at 200m across 2 nodes.
- Designing custom PCB layouts (EasyEDA) and fabricating enclosures in-house via 3D printing and CNC.
Laboratory Assistant - Networking Lab
Universitas Diponegoro
Aug 2025 - Dec 2025- Assisting 150+ students per semester across Switching, Routing & Wireless Essentials.
- Standardising configuration workflows for VLANs, inter-VLAN routing, HSRP, STP, and EtherChannel.
- Implementing port security, ACL-based access control, and DHCP policies.
Backend Developer Intern
NTMC Korlantas POLRI
Jul 2024 - Aug 2024- Building an automated Excel import feature using Django REST Framework for large-scale police database management.
Organisational Experience
A comprehensive track record of my leadership and community service roles.
Project Manager Essential
Student Executive Board Engineering Faculty - Semarang, Indonesia
Feb 2023 - Dec 2023- Directed a 50-person team to execute a university-wide scholarship seminar, orchestrating strategic planning and stakeholder communications.
- Negotiated sponsorships with 3 corporate partners and 10+ scholarship providers, successfully reducing operational costs by 25%.
Head of Scholarship Divison
Student Executive Board Engineering Faculty - Semarang, Indonesia
Feb 2024 - Dec 2024- Spearheaded scholarship distribution across 12 engineering departments, aligning long-term strategic goals with academic inclusivity.
- Cultivated robust partnerships with key stakeholders and scholarship providers to optimize funding opportunities.
Treasury Staff
The Ace (Computer Engineering Department Birthday Event)
Feb 2024 - Oct 2024- Secured over Rp 15,000,000 in sponsorships by negotiating competitive contracts with 5 corporate vendors.
- Synchronized financial operations and budget allocations across a 30-member committee to ensure cost-efficient event execution.
Project Manager Delegation Center
HIMASKOM
Aug 2023 - June 2024- Orchestrated execution timelines and resource allocation as the central Project Manager for the delegation center.
- Managed and prepared 50+ personnel for high-performance external organizational representation.
Head of Media Division
KKNT IDBU TIM 26
Jun 2025 - Aug 2025- Led a 10-person media team to produce 74 targeted content pieces, scaling digital presence to 20,000+ combined views.
- Coordinated production workflows via Notion and established weekly KPIs, achieving a 10% week-over-week growth in insights.
Let's Build Something Resilient.
Looking for an infrastructure engineer who understands networking, Linux, and modern deployments from the ground up? Let's talk.