Senior Full Stack / Frontend Engineer (Part-time / Contractor)

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#resume #parttime #contractor #fullstack #frontend #react #medusajs #typescript #AI 🔹 Position: Senior Full Stack / Frontend Engineer (Part-time / Contractor) 📍 Location: Remote (GMT+3 / CET) ⏳ Availability: 20-40 hours per week (Immediate start) 💼 Experience: 5+ years of commercial development 💵 Rate: $35 - $45 / hour (Negotiable) ✈️ Contact: [handle] Professional Profile: Expert Full Stack Engineer with a strong focus on Frontend ecosystem (React/Next.js), modern E-commerce (Medusa.js), and AI-driven development. I take complete ownership of user-facing products and core modules — from building complex interactive UI engines to stabilizing release pipelines and backend integrations. Ideal for teams needing a high-autonomy senior developer who can ship fast using AI without sacrificing code quality. Key Expertise for Part-time / Contract Roles: • Advanced Frontend & UI: Building complex interactive interfaces, data-heavy dashboards, Canvas-based tools, and optimizing user funnels. • Medusa.js & E-commerce: Extending core storefronts, custom plugins development, and seamless integration with Stripe and ShipStation. • AI-Driven Workflows: Actively leveraging Cursor, custom .cursorrules, and AI agents to accelerate routine tasks (UI components, tests, docs) by up to 50%. • Process & Stability: Setting up strict release workflows, blocking broken production builds, and restoring business metrics. Core Achievements: • Business Metric Recovery: Resolved a drop in platform revenue by optimizing the frontend checkout flow (boosting conversion) and overhauling the release process (blocked direct master merges + introduced automated bot-reviews and QA AI-agents). • Complex UI Engines: Developed an interactive Product Customizer from scratch (Canvas API) with dynamic multi-layered logo mapping and real-time preview configurations. • Technical Ownership: Managed front-to-back delivery, backend API tweaks (Node/Express), and deployment (Docker/Portainer) for an enterprise e-commerce platform powering 61 active storefronts. • Architecture Migration: Led the migration of 5 legacy web applications into a unified Nx monorepo, drastically cutting CI/CD times. Tech Stack: • Frontend: React, Next.js, TypeScript, Canvas API, Tailwind CSS, Redux Toolkit, Nx Monorepos. • Backend & Infra: Node.js, Express, Medusa.js, PostgreSQL, Cursor AI, AI Agents, Docker, Portainer, Stripe & ShipStation APIs. Languages: • English: B2+ (Professional working proficiency, smooth communication). • Russian: Native.

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