Maksim K
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Werkervaring
Python Backend Developer
Freelancer.com
Apr 2023 - Present • 3 yrs 2 mos
Built and shipped 15+ production-ready backend projects independently, from architecture to deployment and monitoring. Key projects and achievements: Developed aegisPy - a Python security sandbox using Linux namespaces, cgroups and seccomp for process isolation. 58 unit tests, CI on 3 platforms (Linux/macOS/Windows), proper packaging with pyproject.toml. Built authhub - a reusable authentication microservice with FastAPI, JWT access/refresh tokens, Redis rate limiting and async notification queue. Ready to plug into any service. Created leadflow-ai - an AI-powered lead qualifier that receives incoming requests via webhook, classifies them as hot/warm/cold using LLM via OpenRouter API, creates deals in CRM and notifies managers in Telegram. Full event-driven pipeline. Built marketplace-sync - Wildberries API integration with rate limiting via tenacity (exponential backoff, retry on 429), data grouping by category and brand, export to Google Sheets. Deployed developer-landing-api - REST API with AI sentiment analysis, rate limiting, email notifications and logging. Live on Railway. Set up zero-to-prod - complete DevOps pipeline from empty VM to production: Terraform on Yandex Cloud, Ansible configuration, Kubernetes (k3s) deployment, GitHub Actions CI/CD, Prometheus and Grafana monitoring with Telegram alerts. Built multiple Telegram bots with aiogram, FSM for multi-step dialogs, PostgreSQL backend and external API integrations. All projects: github.com/flexxrap