I'm DemonDev— a full-stack engineer who builds across the whole stack: web & mobile apps, AI systems, crypto & on-chain tooling, desktop software, automation and bots. Whatever the stack, whatever the problem — I ship the obscure, complex things others won't touch.
For close to a decade I've lived at the intersection of low-level tooling and slick product UI — shipping full-stack web apps, mobile apps, AI agents and classifiers, on-chain bots and scanners, desktop software and automation. The projects below are examples, not a menu; the throughline is that I build whatever the problem actually needs.
A lot of it is the kind of work generalist agencies decline — niche, technical, and fragile if you don't know what you're doing. That's exactly the work I want. I treat each project like my own product: designed end-to-end, performance-tuned, and supported after launch.
If you have something obscure, ambitious, or just plain hard to spec — bring it.
I work in tight loops — clear scope, fast prototypes, then production polish. You see real progress every week, not slide decks.
Bots that miss a tick are losses. UIs that drop frames feel cheap. I optimize from the metal up, not as an afterthought.
Clean architecture, real docs, sensible naming. Whether you keep me on retainer or ship internally, the codebase doesn't trap you.
There's no fixed menu — every project is a custom build. Describe the problem and I'll scope, quote and ship it, whatever the stack. Most work is quoted within 48 hours.
Full-stack across every layer — web & mobile apps, SaaS, AI systems, crypto & on-chain tooling, desktop software, Discord bots and game-server work. One engineer, the whole stack.
The repetitive, the complex, the “is that even possible” — turned into software that runs itself. If a machine can do it, I'll build the machine.
Scoped and quoted within 48 hours, delivered production-ready — with the source in your hands. Every build is custom to spec, priced to your scope.
Every order is custom. Open a ticket on Discord — I'll scope it, quote it and get it building. Join the server to see live builds, drops and updates.
A cross-section of the work — web apps, AI systems, crypto tooling, desktop software and more. Open any project for a full write-up and a live, interactive preview.
28 live previews. Scroll, drag, or use the arrows.
Battle-tested tools and templates I've already built. Buy once, deploy in minutes, own the source. All purchases funnel through Discord — same-day delivery.
Native Windows performance optimizer · 12 tweak categories · dry-run preview · restore points.
Try the Windows tweak app for 30 days.
90-day license at 20% off the monthly rate.
One-time payment. Every future version. Forever.
All tiers unlock the full app — same features, different license length. Delivered as a license key via Discord ticket. Same-day activation.
Build 5 custom weapon soundpacks for GTA V / FiveM.
A HWID-bound license for SP Generator — the Windows desktop app that makes custom GTA V / FiveM weapon soundpacks easy. Extract sounds from any existing pack, drop in your own clips, tune per-slot gain/normalize, generate the game-ready RESIDENT.rpf + WEAPONS_PLAYER.rpf pair and install straight to GTA V with automatic backups. This tier is capped at 5 pack generations — perfect for tuning your own server's audio. Includes free updates for 30 days and the source code to the tool.
Unlimited packs. Every future version. Forever.
Lifetime SP Generator license — unlimited pack generations, all future updates, and every new weapon slot as they land. Same HWID-bound activation, offline 7-day grace, community pack browser, sound extraction, editor with trim/fade/gain/norm, install & restore. Ideal for server owners running multiple audio revisions or content creators building packs at scale. Reseller rights and full-source / open-source buyout are available on request — ask in Discord.
One-page site that converts — designed, built & deployed.
A custom single-page marketing site built in Next.js + Tailwind — animated hero, your sections, a working contact form, SEO meta and OG images, deployed to your domain with SSL. Mobile-perfect, 90+ Lighthouse on launch. Turnaround ~3–5 days.
Multi-page site with a CMS you can edit yourself.
Up to ~6 pages (home, about, services, blog, contact, more) with a self-serve admin CMS so you can edit copy, projects and prices without touching code. Booking/quote flows, blog, analytics, SEO and hardened security headers. The same stack powering demondev.tech.
Full-stack app — auth, dashboards, database, API.
A bespoke web application scoped to your idea: user auth, role-based dashboards, real-time data, a database and a clean API. Built in Next.js + Node with PostgreSQL/Redis, deployed and monitored. Pricing starts here and is scoped to your feature set.
Storefronts & subscription products, end to end.
A complete store or SaaS: product catalog or subscription tiers, Stripe checkout & billing portal, customer accounts, an admin panel and order/usage analytics. Built for conversion and scale. Starting price — final quote scoped to scope.
Free bots stop at open/close. This is the one staff actually need.
AI-routed intake, full conversation transcripts, claim/transfer/escalate flows, per-category staff assignment, anti-spam rate-limits, and stale-ticket auto-close — all production-tested. Tip: it's also bundled free inside the Discord Server Setup package.
Local AI coding agent — Claude Code without the cloud.
A self-hosted coding agent powered by Ollama + Qwen 2.5 Coder. Vector memory, multi-model routing, intelligent task planning, code review, automated test gen, FastAPI web UI. 70 phases of development, fully documented.
Native Windows cleaner — Rust + Tauri.
Cross-platform desktop utility built with Tauri v2 + Rust + React. Multi-threaded scans, never auto-deletes, human-readable file sizes, real-time progress emit. ~5MB binary.
Ranked ELO matchmaking for FiveM combat servers.
The competitive league bot running SinisterRZ — ELO queues for 1v1/2v2/3v3, auto-balanced teams, private match tickets, win logging, leaderboards & ranks, plus Discord → FiveM role sync (chat tags + perks) and a Kill-on-Sight system. discord.js v14 + MySQL, PM2-ready.
Multi-chain mempool sniper, ready to fire.
Stripped-down version of my pro sniper — Solana + EVM mempool watcher, honeypot sim, multi-wallet exec. Configure & run.
Trading dashboard you can ship today.
Next.js + Tailwind + Chart.js trading dashboard with live order book, candlesticks, P&L. Plug in your own data feed.
Streaming chat UI with Anthropic/OpenAI hookup.
Production-ready streaming chat (the same one powering this site). Markdown rendering, suggestions, model-swap, rate-limit middleware.
Police mobile data terminal, RP-grade.
Full MDT for FiveM RP servers — active calls, unit tracking, records lookup, real-time dispatch. Modular, themeable.
A complete, done-for-you Discord server + bot.
Your whole server built from scratch: a clean category/channel layout, roles with permissions synced to every channel, and a custom bot that ships with a full ticket system, anti-nuke protection, invite tracker, giveaways, and mod-activity logs you can read on a simple web dashboard. Easy to run — handed off ready to go.
Cinematic FiveM staff admin overlay.
Full admin menu for FiveM — player tools, vehicle controls, server management, logs, modular permissions. Drop-in for SinisterRZ-style servers.
15-app in-game smartphone for QBox / qb-core.
A premium in-game phone — dialer, messages, banking, social feed, GPS maps, marketplace, scanner, gang hub and more, all wired to your economy and job systems. PIN lock, live notifications, contacts, camera & gallery. Configurable and themeable.
Leveled hunting system with missions & leaderboard.
Dynamic hunting for your RP server — XP/level progression, rotating missions, a server leaderboard, animal AI with rarity tiers, skinning/harvest mechanics and a multi-tab NUI. Built on ox_lib / ox_target / ox_inventory.
Engine/body HP, tire blowouts, leaks & fuel scaling.
Make driving matter — independent engine and body HP, per-tire pressure with blowouts, coolant/fluid leaks, fuel scaling and engine smoke, with a live telemetry HUD. Lightweight, built on ox_lib + ox_fuel.
One F2 panel to run your whole server.
A unified owner/admin suite — manage players, economy, phases, DOJ, vehicles, items, gangs/casino and a full audit log from a single permission-gated NUI. Built to orchestrate a stack of interlocking server systems.
Permission-based FiveM recruitment + dashboard.
Grow your FiveM server the safe way — opt-in-only DMs (players agree first), rate-limited to avoid Discord spam flags, trackable per-campaign invites, automatic A/B testing, live CFX player count and join attribution. Discord bot + Next.js dashboard, Prisma/SQLite. Resell-ready.
A complete, production-ready server base — not a framework.
Skip months of setup. A full Qbox + ox-suite foundation with ledgered banking, jobs & gangs, garages, housing, anticheat hooks, whitelist + queue and a Next.js admin panel — all wired into a Docker stack with automated MariaDB backups and one-shot installers. Launch a real server in a day.
Downed → dispatch → treat → respawn, done right.
A complete EMS/ambulance loop for serious RP — death detection with weapon cause, auto-dispatched calls to on-duty medics, ox_target treatment (bandage, stabilize, skillcheck revive), bleed timers, nearest-hospital respawn with fee and an optional organ-harvest hook for criminal RP.
Capture zones, influence decay & scheduled gang wars.
Turn turf into gameplay — territory capture with time-decaying influence per gang, dominance-ratio capture rules, treasury + reputation payouts, NPC reinforcements for the holding gang and scheduled UTC war windows. Live influence HUD and capture feed included.
Wallet → FIFO cost basis → IRS Form 8949 CSV.
A Solana-first crypto tax tool that scans a wallet's DEX trades (Jupiter, Raydium) via Helius, computes FIFO cost basis with CoinGecko USD prices, splits short- vs long-term gains and exports ready-to-file IRS Form 8949 CSVs. FastAPI + HTMX, no build step, self-hosted.
Stops wallet-drainer signatures before you sign.
A browser extension that intercepts Solana wallet signature requests, pre-flights them with simulateTransaction, runs risk heuristics (drainer lists, SetAuthority, unknown programs) and shows a block / warn / approve verdict before the wallet's signing UI ever opens. Works with Phantom, Solflare & Backpack. Free core; Pro adds live drainer feeds.
Transcript → titles, chapters, tags & thumbnails.
Paste a video URL and get CTR-ranked titles, auto chapters, keyword tags, AI thumbnails (Stability SDXL) and a deterministic SEO score — all driven by the transcript. Pluggable LLM provider (Anthropic / OpenAI / Ollama). FastAPI + HTMX UI plus a CLI.
Long video → viral vertical clips, self-hosted.
A local-first highlight detector — three signals (audio loudness, scene change, transcript NLP) score every second, pick the top non-overlapping windows, then ffmpeg cuts, reframes (TikTok / Shorts / Reels / square / landscape) and burns in captions. No cloud bill.
Custom orders open in #🧾│request-quote on Discord — launch pricing in effect. Already agreed a price? Pay with PayPal.
Tools I reach for daily. The right pick depends on what we're actually building — I won't hammer your project into the wrong shape just because it's in the toolkit.
Custom Discord bots start at $10 for a single-purpose bot and scale with features like database-backed state, third-party API integrations and 24/7 hosting. A complete Discord Server Setup — full server build plus a bot with tickets, anti-nuke, invite tracker, giveaways and a web mod-log dashboard — is $20 (was $79).
Yes. The Discord Server Setup ($20, was $79) builds your entire server — categories, channels, and roles with permissions synced to every channel — plus a custom bot with a full ticket system, anti-nuke protection, invite tracking, giveaways, and mod-activity logs you can read on a clean web dashboard. It's handed off ready to run.
FiveM is a core specialty. Ready-made scripts — phone, hunting, vehicle realism, dispatch MDT, admin tools — start at $13 with source included, and bespoke scripts or full server builds are quoted per project. ESX, QBCore / QBox and standalone are all supported.
Custom websites and web applications start at $20 for a one-page landing site, $45 for a multi-page business site with a self-serve CMS, from $89 for a full web app with auth, dashboards and an API, and from $179 for e-commerce or SaaS with Stripe checkout. Launch pricing while we build our client base — everything is built in Next.js + Tailwind.
Yes. Shop purchases include the full source code and a 30-day bug-fix window. Custom builds are handed off with the complete codebase and documentation, so you're never locked in.
Pre-built shop items are delivered the same day via Discord. Custom projects are typically scoped and kicked off within 48 hours; a landing page ships in about 3–5 days, with larger builds quoted with a timeline up front.
Open a ticket in the DemonDev Discord (discord.gg/5dRK2tXfbD) and mention the item or describe your project. You'll get the package the same day for shop items, or a fast quote for custom work.
Crypto bots and on-chain tools, Discord bots and full server setups, FiveM servers and scripts, custom websites and web apps, mobile apps, and self-learning AI systems — including AI agents, classifiers and vision pipelines.
Ask the assistant anything — pricing, timelines, what's possible. For real conversations and to actually place an order, jump on Discord.