Vitaliy P.

Python Developer with $4M+ in client revenue | About 4,000 Upwork hours | 100% Job Success Score | 50+ successful projects ✅ 20+ years of full stack Python Django development experience ✅ 100% Job Success Score | 57 completed projects | 4,000+ Upwork hours ✅ ERP and CRM development, SaaS platforms, HIPAA-compliant systems, AI integrations Send me a message and I will respond same day. ⭐️⭐️⭐️⭐️⭐️ "Vitaliy delivered a platform that matched our complex lab workflows perfectly. It runs smoothly, integrates with our ERP, and reduced manual work by 60%." - Viktor, CTO at LifeChemicals ⭐️⭐️⭐️⭐️⭐️ "Very strategic. Clean code, scalable infrastructure, and business-focused development. Our CRM now works like it should have from the start." - Jack, Founder at DashPro ⭐️⭐️⭐️⭐️⭐️ "We launched our MVP in just 6 weeks and it worked flawlessly. Communication and delivery were on point." - Maria Solodar, Founder at Todoo.Digital ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ What I Build as a Python Django Developer ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ I help established companies and tech-forward teams turn complex operations into fast, secure, and scalable software using Python, Django, React, and React Native. Whether you need a custom ERP, a CRM built around your workflows, a multi-tenant SaaS MVP, or a full Django backend with React frontend, I take ownership from architecture through deployment and beyond. - ERP and CRM Development Custom ERP systems and CRM platforms built with Python Django, replacing spreadsheets and fragmented tools with unified, workflow-specific systems. I have delivered ERP development for the beverage industry, CRM systems for solar agencies, and internal business platforms that reduced manual work by 60% for clients. Django ERP and CRM development is one of my primary areas of depth, and I design these systems with role-based access, audit logging, and reporting that enterprise operations teams actually need. - SaaS Platform Development Full stack SaaS platforms built with Python Django backends, Django REST Framework APIs, React frontends, and PostgreSQL databases. My SaaS work covers multi-tenant architecture, Stripe subscription billing, role-based access control, admin dashboards, and scalable database design that supports growth without requiring a full rebuild at scale. - Mobile App Development Cross-platform mobile applications with React Native for iOS and Android, covering field operations, logistics, inventory tracking, healthcare workflows, and customer engagement. React Native apps I deliver connect to Django REST Framework backends and use Expo or native modules depending on project requirements. - Django Backend and API Development High-performance Django REST Framework APIs, Celery background tasks, PostgreSQL optimization, Redis caching, and secure authentication systems. I design Django backend architecture that scales with the product and stays maintainable as teams and feature sets grow. FastAPI and Flask are also part of my Python backend toolkit for projects where they are a better fit. - Integrations and Third-Party APIs Stripe, Salesforce, Twilio, SendGrid, Plaid, AWS, Firebase, Google Maps, Zapier, Segment, and more. Python Django integration work includes webhook handling, data sync pipelines, and event-driven automation that connects your software to the tools your business already depends on. - Legacy Migration and Modernization Migrating legacy PHP, .NET, or outdated Django applications to modern Python Django and React stacks. I have delivered full codebase refactors that preserved business logic while replacing fragile infrastructure with clean, documented, production-grade Django architecture your team can maintain. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Tech Stack ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Backend: Python, Django, Django REST Framework, Flask, FastAPI, Celery, Redis Frontend: React, TypeScript, JavaScript, React Native, HTML5, CSS3, Tailwind Databases: PostgreSQL, MySQL, SQLite, Firebase, Amazon S3 DevOps: Docker, GitHub Actions, GitLab CI/CD, AWS EC2, DigitalOcean, Nginx Integrations: Stripe, Salesforce, Twilio, Plaid, SendGrid, Zapier, Google Maps ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Industries ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SaaS, Manufacturing, Healthcare, CleanTech, Logistics, Real Estate, EdTech, Life Sciences, eCommerce, CRM and ERP, Analytics, TravelTech. If you need a Python Django developer who understands both the technology and the business problem behind it, send me a message. I will help you plan, architect, and build with precision.