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.
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
Chairperson
Student Executive Board Engineering Faculty - Semarang, Indonesia
Jun 2023 - Dec 2023- •Making an impactful event for student in university. Fulfill the scholarship desire leading to an impactful event and the successful to the overall seminar.
- •Leading over 50 people, using effective communication, personal approach, resilience, camaraderie, and strategic planning really contribute to the success team.
- •Successfully made deals with 3 companies and reduced the budget by 25%.
- •Cooperate with over 10+ scholarship provider, making more appropriate and valid source for student who looking for scholarship.
Head of Division
Student Executive Board Engineering Faculty - Semarang, Indonesia
Feb 2024- •Led a dedicated team of professionals, fostering an environment of collaboration, innovation, and continuous improvement.
- •Providing scholarships need for 12 Departments in Engineering Faculty of Diponegoro University.
- •Developed and implemented long-term strategies that aligned with organizational goals, fostering a culture of academic excellence and inclusivity.
- •Cultivated strong relationships with key stakeholders, scholarship provider and awardee of scholarship.
Treasury Staff
The Ace (Computer Engineering Department Birthday Event)
Feb 2024 - Oct 2024- •Negotiated and secured competitive contracts with 5 different vendors, obtaining vital sponsorships valued at over Rp 15,000,000.
- •Synchronized financial strategies and operations by coordinating efficiently with more than 30+ committee members across the event.
Project Manager / Staff of PSDM
HIMASKOM
2023 - 2024- •Served as the central Project Manager for the delegation center, overseeing comprehensive execution timelines and human resource allocation.
- •Ensured the high quality and performance readiness of 50+ human resources from the computer engineering department for external organizational representation.
Let's Build Something Resilient.
Looking for an infrastructure engineer who understands networking, Linux, and modern deployments from the ground up? Let's talk.