[EN] Backend & AI-focused developer building scalable systems, high-performance security tools, and modern web applications. Expert in low-level network filtering and automated deployment architectures.
[UA] Бекенд-розробник та спеціаліст з мережевої безпеки. Створюю відмовтійкі системи, високопродуктивні інструменти захисту (WAF) та сучасні веб-застосунки. Спеціалізуюся на низкорівневій фільтрації трафіку та автоматизації розгортання.
- Low-level Network Filters: Deep packet inspection, traffic analysis, and filtering at scale.
- WAF Development: Building custom WAF solutions (AeroGuard, Antigravity-L7).
- JA4 Fingerprinting: Implementation of advanced client fingerprinting for bot detection.
- Cloaking Solutions: Development of advanced traffic redirection and cloaking engines.
- Frameworks: Node.js (NestJS, Fastify), Java (Spring, Grails), .NET.
- Frontend: React, Next.js (SSR/SPA), MUI.
- Distributed Systems: Microservices architecture, Event-driven systems (EventBus).
- Databases: MongoDB, PostgreSQL, Redis, MSSQL.
- Orchestration: Docker Swarm (Global/Host modes), PM2.
- Deployment: Railway, Coolify, automated scaling, and service updates.
- Integrations: Hestia, Keitaro, Cloudflare API, digital signatures (Java-based).
Advanced WAF & Anti-Bot Proxy (Go)
- High-performance security proxy featuring JA4 fingerprinting and header consistency checks.
- Docker Swarm deployment with real-time bot mitigation.
- Tech: Go, Redis, Docker Swarm, JA4.
Domain Management & Automation Suite
- Comprehensive solution for domain registration management and Cloudflare automation.
- Automated security setup, NS configuration, and content publishing to target servers.
- Tech: NestJS, Next.js, Cloudflare API.
Advanced Traffic Filtering
- Proprietary cloaking engine for traffic isolation and advanced bot protection.
- Tech: Go, JavaScript/TypeScript.
- Distributed architecture with 10+ microservices managed by PM2.
- Custom Java encryption service for qualified digital signatures.
- Tech: Node.js, Fastify, Java EE, PostgreSQL.
- Android: Developed taxi service applications and specialized tools (Trade Agent).
- Cross-platform: Experience with React Native and Titanium SDK.
- LinkedIn: Ruslan Rosbitskyy
- X (Twitter): @rosbitskyy
- Projects: Check out my repositories
Building the future of secure and scalable web architecture.