Vitaliy M.

Hi, I’m a senior full-stack TOP PLUS engineer specializing in turning product specs and Figma designs into production-ready platforms that handle real users and revenue. With over 6,200 hours and $200K+ in delivered work on Upwork, I help founders, product teams, and enterprise clients skip the common pitfalls of quick-fix agency builds. You get direct, senior-level engineering from day one- focused on building a clean, scalable codebase your team fully owns and can easily maintain. What I Build Multi-Tenant SaaS: Enterprise tenant isolation, RBAC, admin panels, audit logs, and Stripe Billing/Connect. Role-Based Portals: Secure, custom workspaces for clients, staff, and partners with strict access control. Marketplaces & Booking Engines: Real-time availability, split payments, calendars, and high-concurrency flows. Custom E-Commerce & Internal Tools: Complex checkouts, inventory logic, and automated business tools that replace spreadsheets. 100% Client Ownership: Deployed to your GitHub, AWS/Vercel, and Stripe with complete technical documentation. How We Work Scope Before Code: Clear deliverables, tech architecture, and fixed estimates before you spend a dollar. Weekly Shipping: Live staging links from week one so stakeholders can test real software immediately. Launch-Ready Reliability: Automated test suites around auth and payments, monitoring, and reproducible deployments. Core Tech Stack Frontend: Next.js, React, TypeScript, Tailwind CSS Backend: Node.js, NestJS, Express, Python (FastAPI), Laravel Databases & ORM: PostgreSQL, Supabase, MongoDB, Prisma Payments & APIs: Stripe (Billing, Connect, Webhooks), GraphQL, REST, WebSockets Cloud & DevOps: AWS, Vercel, Docker, CI/CD pipelines Ready to move from design to production? Send over your draft, spec, or Figma links, and I’ll provide a structured technical breakdown, timeline, and scope estimate.