Specialization: Anti-bot systems, scraping pipelines, and production-grade automation systems
Impact: 9,000+ active users across bot infrastructure 🟢 Available for remote opportunities

Python Backend Developer / Python Automation Engineer focused on backend automation, security workflows, API integrations, scraping infrastructure, and production Python systems.

Experienced in building modular backend services, async processing pipelines, threat intelligence enrichment workflows, anti-bot automation, and resilient analytics systems.

Recently delivered Microsoft Sentinel automation projects involving MSTICPy, KQL orchestration, Azure ML notebooks, cross-domain correlation, Isolation Forest anomaly detection, SHAP explainability, and incident automation workflows.

Strong in API debugging, HTTP session analysis, clean architecture, maintainable business logic, and production-ready automation solutions.

Experienced in building backend automation systems, analytics pipelines, data-processing workflows, and production-ready orchestration for integration-heavy applications.

Python 3.10+, AsyncIO, OOP, Clean Architecture

requests, httpx, REST APIs, sessions, cookies, headers

SeleniumBase (UC Mode), Playwright, browser automation, scraping infrastructure, HTTP session debugging

Python, SQL, JavaScript

FastAPI, REST APIs, async workers, service layer architecture, repository pattern, background jobs

MSTICPy, WHOIS, DNSBL, GeoIP, URLhaus, MalwareBazaar

pandas, Plotly, SHAP, Isolation Forest, merge_asof

anomaly detection, structured analytics, data processing, risk scoring, decision workflows

Docker, Linux, Systemd, Azure ML, MongoDB, PostgreSQL

pytest, pytest-asyncio, pytest-cov, integration testing

Problem: Need automated phishing analysis in security incidents
Solution: Modular Python engine with authentication checks, threat intelligence, and scoring
Impact: Used in production security workflow for automated incident analysis
Tech: Python, APIs, WHOIS, DNSBL, GeoIP, URLhaus, MalwareBazaar

Problem: Automated registration blocked by Cloudflare and Incapsula
Solution: Custom Chrome Extension for proxy authentication + human behavior emulation
Impact: 99% success rate on React SPAs with dynamic protection
Tech: SeleniumBase (UC Mode), Manifest V3, RuCaptcha API, Proxy rotation

Problem: Manual job posting distribution across 20+ Telegram channels
Solution: Distributed automation system with Telegram as interface layer Impact: 9,000+ active users | 80%+ filtering accuracy | Zero downtime
Tech: Python, Aiogram 3, Telethon, MongoDB, Docker, systemd

Problem: Extracting vehicle auction data from protected websites and PDFs
Solution: Multi-stage ETL with AI extraction, VIN validation, and mobile browser emulation
Impact: Automated processing of 1,000+ records/day | Bypassed CAPTCHA protection
Tech: Python, Gemini API, Playwright, Appium, NHTSA VPIC API, Google Sheets

Problem: Existing cycle tracking apps often compromise privacy, lack flexible notification logic, and are difficult to extend into scalable multi-platform systems. Solution: Rebuilt an MVP into a modular SaaS-style backend platform with repository pattern, service layer, isolated adapters, background workers, and timezone-safe event modeling. Impact: Production deployment | 784 automated tests | 91% test coverage | Partner-aware notification system with customizable delivery logic and async processing architecture Tech: Python, AsyncIO, MongoDB, pytest, Docker, repository pattern, background workers

Problem: Users need unified tool for downloading from Instagram, TikTok, X, LinkedIn
Solution: Modular handler architecture with smart fallback chain (yt-dlp → API → metadata)
Impact: Active production bot with media group support and broadcast system
Tech: Python, pyTelegramBotAPI, Instaloader, yt-dlp, Selenium

Problem: Need stateless AI assistant with function execution
Solution: LangGraph state machine with OpenAI tool integration
Impact: Foundation for AI-assisted automation tools
Tech: Python, LangGraph, LangChain, OpenAI GPT-4o, Pydantic

✅ Production mindset: Every project designed for fault tolerance, logging, and restart safety
✅ Anti-bot expertise: Deep knowledge of browser automation, CAPTCHA solving, and proxy management
✅ Full-stack approach: From Selenium scripts to Dockerized microservices with MongoDB
✅ Technical leadership: 5+ years managing teams and documenting complex systems
✅ Business-oriented: Focus on metrics, uptime, and scalable architecture

💼 LinkedIn: linkedin.com/in/helena-gusarevich
📧 Email: hel.async.dev@gmail.com
💬 Telegram: @Hel_inst
🌐 Portfolio: hel-3d.github.io/hel-3d
🌍 Location: Yerevan, Armenia (UTC+4) | Open to relocation

Building production-grade automation systems that work reliably under real-world conditions