Andrii Vasyliev

Nearly a decade as the core developer and team lead on a modular multi‑tenant Brand Management System used daily by global brands. The platform's architecture — a shared core with per‑client override layers, distributed via Git submodules — let us ship 23+ installations while keeping a single codebase. I owned architecture decisions, ran code reviews, mentored the team, and built the full CI/CD pipeline from scratch.

• • Architected and maintained BMS platforms for 23+ enterprise clients
• • Built modular CMS with Page Builder, DAM, Media Database, Newsletter engine with CSS inlining, Workflow approval system
• • Implemented SAML SSO, OAuth 2.0 API, RBAC, multi‑tenant and multi‑site architecture with i18n
• • Led development team: code reviews, task distribution, mentoring junior/mid developers, enforcing code quality (PHPCodeSniffer, ESLint)
• • Set up full GitLab CI/CD pipeline: lint → test → build → deploy across dev/staging/pentest/production
• • PDF generation (TCPDF, PrinceXML), media processing (ImageMagick, FFmpeg), SVG icon font pipeline

Challenge: Implementing OAuth 2.0 and SAML SSO for enterprise clients with strict security requirements — full responsibility for integration with corporate identity providers.

Co‑founded and built the entire platform from zero — a SaaS for AI‑powered landing pages, intelligent traffic routing, lead management, and ad campaign orchestration. Laravel backend with DDD (28 bounded contexts), Vue 3 SPA, GPT‑4 integration, Stripe billing, and direct Google/Facebook Ads API connections. 10 languages, multi‑workspace RBAC, and a visual page builder with real‑time preview.

• • Initialized and architected the entire project — Laravel backend with DDD (28 bounded contexts), Vue 3 SPA frontend
• • Integrated GPT‑4 AI assistant for automated content generation, ad campaign creation, and recommendations
• • Built visual landing page constructor with 5 themes, section editor, real‑time preview, SEO optimization
• • Implemented RBAC with multi‑workspace team management and 30+ granular permissions
• • Integrated Google Ads API & Facebook Ads API for campaign management directly from the platform
• • Stripe payment integration, i18n (10 languages), CRM module for lead management

Challenge: Self‑taught LLM expertise at an early stage when few professionals existed in this niche — from research to a production‑ready AI assistant.

Designed and built an automated UI testing platform end‑to‑end: a Chrome MV3 extension for visual test creation paired with server infrastructure that runs tests inside isolated Docker containers with headless browsers. Dual FastAPI architecture, SSH‑tunneled orchestration, HLS live streaming of test runs, and Telegram notifications — all with security‑first design.

• • Chrome MV3 side‑panel extension with visual test scenario builder, CSS selector picker, inline CodeMirror editor, and real‑time HLS stream viewer — all as isolated Vue 3 apps in Shadow DOM
• • Backend: FastAPI dual‑app architecture, asyncinotify‑based long‑polling, Docker‑isolated xvfb containers (Selenium + Chrome/Firefox + FFmpeg HLS)
• • Security: seccomp profiles, SSH forced commands, user isolation, minimal privileges

Challenge: Achieving stable Selenium test execution in Docker containers — solving headless browser, xvfb, and environment isolation issues.

Full‑stack web development across multiple CMS and framework platforms for diverse client projects.

• • Built and maintained web applications using Yii, CodeIgniter, CakePHP, WordPress, and Joomla
• • Delivered 10+ client projects end‑to‑end: requirements gathering, development, deployment
• • Gained foundational experience in PHP ecosystem, MySQL, frontend development, and Linux server administration