
AlexB
Full Stack Web Developer Python, Flask, JavaScript, SQL
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Full-Stack Web Developer
Self-Employed / Freelancer
Sep 2026 - Present • 2 mos
Independent full-stack development of business software — from data model to deployed, tested systems. Delivered projects: • HighValue Auction (MVP) — auction platform: real-time bidding (SSE), KYC verification, TOTP 2FA, payments (Stripe sandbox), settlement on an append-only ledger. 127-test automated suite (unit + integration + E2E) and a 100-bidder load test — zero server errors. • BusinessFlow CRM — customer, opportunity and task management; role-based access control enforced server-side, full CRUD with validation, automated tests (pytest). • Czysta Przestrzeń — responsive business website with a quote-request form and admin panel, deployed on Netlify (demo with a fictional company). Stack: Python (Flask), JavaScript, HTML/CSS, SQL (SQLite/PostgreSQL), Alembic, pytest, Playwright. Full cycle: architecture, secure backend, UI, tests, documentation, deployment.