~/developer/julius

Julius Narvasa

Software Developer

I build backend systems, self-hosted AI infrastructure, and developer tooling. Currently exploring local LLMs and computer vision pipelines on AMD hardware.

backend · apis · cloud infra · local ai · self-hosted systems

View Projects → Contact

01 — Projects

Featured Projects

Things I've built end-to-end.

Re-Fuel

mobile

Drivers manually log gas prices and fuel consumption across the Philippines — no easy way to see trends or remember which station was cheapest last week.

Challenges

› GPS-based auto-capture within 150m
› On-device YOLOv8 price-board detection (ONNX)
› Offline-first IndexedDB cache

react capacitor typescript yolov8 onnx csharp dotnet-8 postgres

github ↗

AI Resume Builder

web

Tailoring a resume to every job posting is tedious and error-prone. Generic resumes get filtered out.

Challenges

› PDF + DOCX resume parsing
› Playwright-based LinkedIn scraping
› Structured LLM output for tailored CV + cover letter

fastapi python react vite tailwindcss playwright openai-api pymupdf

github ↗ demo ↗

GpuVramMonitor

desktop

Windows has no per-process VRAM tool for AMD GPUs. Task Manager shows only the total; AMD Adrenalin shows only the total.

Challenges

› Parsing GPU Process Memory performance counter instance names
› Resolving PIDs and excluding the inflated dwm.exe reading
› Real-time refresh with pause/resume

csharp wpf dotnet-8 windows performance-counters

github ↗

02 — Infrastructure

Infrastructure

Self-hosted across a Proxmox box at home and a cloud VPS.

Homelab

Proxmox · on-prem

├─ VM 100 · apps

├─ Immich (Docker)

├─ immich_server

├─ immich_postgres

├─ immich_redis

└─ immich_ml

├─ Jellyfin (native)

├─ qBittorrent (native)

└─ Ollama (native)

├─ VM 101 · networkwatcher

├─ VM 102 · OmadaController

└─ VM 103 · autoswitcher

VPS (cloud)

VPS · cloud (ARM64)

├─ Nginx reverse proxy (public-facing)

├─ SillyTavern (node)

├─ AI Resume Builder (FastAPI)

├─ Re-Fuel API (.NET)

├─ Ollama — embeddings

├─ vaultwarden

├─ n8n

├─ PostgreSQL

├─ Redis

└─ WireGuard

Local workstation

├─ llama.cpp + Qwen3-Coder (LLM inference)

└─ ComfyUI (image gen)

Networking

├─ Tailscale (mesh)

├─ WireGuard

├─ Cloudflare DNS

└─ Nginx reverse proxy

Cloud

└─ Oracle Cloud (ARM64)

03 — AI Lab

AI Lab

Local inference and computer vision experiments.

Online — local inference ready

Inference

llama.cpp Local LLM server, Vulkan + ROCm backends b9106

Qwen3.6-35B-A3B MoE model, 3B active params Q4_K_M

AMD ROCm / HIP Native HIP backend on RX 7800 XT gfx1101

Vision

ComfyUI Image gen workflow server ROCm

Chroma1-HD FLUX-based diffusion, pruned Q6_K

04 — Experience

Experience

Where I've been and what I've shipped.

2020

Joined Netzon Tech

Backend dev, internal tooling, observability.

2021

Led API development

Multi-tenant ISP management platform (GraphR).

› Stripe + GoCardless integration
› Subscription recovery workflows

2022

Cloud integrations

Azure + GCP cost optimization, IaC, CI/CD.

› Cut cloud spend 30% via right-sizing
› Migrated monolith to managed services

2023

Payments & billing

Led billing architecture across products.

› Idempotent webhook handling
› PCI-conscious design

2024

AI & computer vision

Started Re-Fuel price-board detection.

› YOLOv8 on-device via ONNX
› OCR preprocessing pipelines

2025

Local AI infrastructure

Self-hosted inference + image gen.

› llama.cpp + ROCm on RX 7800 XT
› ComfyUI for image generation

2026

Exploring

Local assistant ecosystem + payment automation.

› Multi-backend proxy + embedding server
› n8n + Stripe workflows

05 — Now

Currently Building

Active threads. Updated as things ship.

→
Local AI assistant ecosystem
multi-backend proxy + embedding server

wip
→
Fuel-price recognition platform
end-to-end, beyond the Re-Fuel MVP

research
→
Self-hosted AI infrastructure
HIP-native builds, draft-model speculation

shipping

06 — Contact

Get in touch

Open to interesting backend, infra, and AI work.

email: jibnarvasa@gmail.com
linkedin: linkedin.com/in/bambaw-tumba
github: github.com/JuliusNarvasa

say hi →