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James Klungler

Full-Stack Developer ยท Security Researcher ยท Reverse Engineer

I build things fast, break things methodically, and ship production code that doesn't wake you up at 3am. Specializing in full-stack development, BLE/IoT reverse engineering, security research, and infrastructure automation. Based in Florida.

Available for contracts & freelance

What I Do

๐Ÿ›  Full-Stack Development

End-to-end application development from API design to polished frontends.

Swift / SwiftUI TypeScript Python React / Next.js FastAPI Node.js C

๐Ÿ”’ Security Research

Vulnerability assessment, protocol reversing, penetration testing, and CVE analysis.

Reverse Engineering BLE / IoT APK Decompilation Protocol Analysis Pentest

โ˜๏ธ Infrastructure & DevOps

Self-hosted production stacks, CI/CD, monitoring, and container orchestration.

Docker Proxmox Traefik PostgreSQL Grafana Vault

๐Ÿ“ฑ Mobile & Embedded

iOS apps, Flipper Zero modules, BLE firmware, embedded C.

iOS / SwiftUI CoreBluetooth Flipper Zero BLE GATT UART

Featured Projects

โšก Enpower Controller โ€” BLE Motor Controller Reverse Engineering

iOS App + Flipper Zero App ยท Jan 2026

Reverse-engineered the proprietary BLE protocol used by Enpower golf cart motor controllers (MC3818/MC3336/MC3528/MC3527/MC3526). Decompiled the Android APK, extracted the Nordic UART Service protocol including challenge-response authentication, parameter read/write encoding, and the full handshake sequence. Built both an iOS app (SwiftUI + CoreBluetooth) and a Flipper Zero native app (C) from the reversed protocol. Complete protocol documentation included.

Reverse Engineering BLE Swift C Flipper Zero Protocol Analysis

๐Ÿ“ก Signal Bot โ€” Real-Time Market Intelligence

Python ยท Jan 2026

Unified signal engine combining stock technical analysis (RSI, MACD, Bollinger Bands, volume spikes, momentum surges, MA crossovers) with prediction market edge detection. Scans 80+ ticker universe across sectors with automated alerting via Telegram. Scheduled cron-based scanning with configurable timeframes.

Python Technical Analysis yfinance Automation Telegram Bot

๐Ÿ  Self-Hosted Infrastructure Stack

Proxmox / Docker ยท Ongoing

Production-grade self-hosted infrastructure on dedicated hardware. Traefik reverse proxy with Authelia SSO, HashiCorp Vault (transit + auto-unseal architecture), PostgreSQL, Redis, MinIO, full observability stack (Grafana, Prometheus, Loki, SigNoz), and automated security scanning with Trivy. 40+ containerized services.

Docker Proxmox Traefik Vault Grafana PostgreSQL

๐Ÿ€ NBA Edge Tracker โ€” Sports Analytics Platform

FastAPI + Next.js + Celery ยท 2025-2026

Full-stack sports betting edge finder. FastAPI backend with Celery task queue for async data processing, Next.js frontend with real-time odds comparison, and PostgreSQL for historical analysis. Automated edge detection algorithms with configurable thresholds.

FastAPI Next.js Celery PostgreSQL Python

Services & Rates

๐Ÿ”ง Full-Stack Development

Web apps, APIs, mobile apps, database design. From prototype to production.

$85-120/hr

๐Ÿ”“ Security Assessment

Penetration testing, code audit, protocol reverse engineering, vulnerability research.

$120-175/hr

๐Ÿ“ฑ IoT / Embedded

BLE protocol reversing, firmware analysis, custom Flipper Zero apps, hardware hacking.

$100-150/hr

โ˜๏ธ DevOps / Infra

Docker, CI/CD, monitoring, self-hosted stacks, cloud migration, Kubernetes.

$90-130/hr

Turnaround

I work fast. Like, really fast. A typical project that takes a team a week, I'll deliver in a day. I'm available across all US time zones and I don't sleep, so deadlines are never a problem.