Yaroslav B.

Are you looking for an AI Full Stack Developer who can build scalable SaaS platforms, AI-powered web apps, LLM integrations, and production-ready backend systems? You’re in the right place. I’m a Full Stack Developer with 6+ years of experience building modern web applications, SaaS platforms, AI integrations, and high-performance APIs using Python, FastAPI, Django, React, and cloud infrastructure. I help startups and businesses turn ideas into reliable software by combining strong backend architecture, clean frontend implementation, and practical AI integration. Over the years, I have delivered: • 50+ full-stack web applications • 100+ third-party API integrations • 20+ subscription-based SaaS platforms • Systems handling 10M+ monthly requests • AI-powered dashboards, automation tools, and API-based workflows • Raised $2M+ / $5M+ / $8M+ after product development • Scaled platforms to 1M+ users and millions of operations • Built secure, compliant systems with HIPAA, GDPR, authentication, and role-based access My main focus is building software that is not only functional, but also scalable, maintainable, secure, and easy to improve over time. AI, LLM & Automation Experience I can help you build and integrate AI-powered features such as: ✅ OpenAI API integrations ✅ AI agents and workflow automation ✅ Chatbots and AI assistants ✅ LLM-powered SaaS features ✅ Document analysis and data extraction ✅ AI summaries, recommendations, and classification ✅ RAG systems and vector search ✅ Prompt engineering and evaluation workflows ✅ LangChain, LangGraph, embeddings, and AI pipelines Whether you need an AI chatbot, internal automation tool, document processing system, AI dashboard, or custom AI-powered SaaS product, I can help design and build the full solution from backend to frontend. Backend Development ✅ Python, FastAPI, Django, DRF, Flask ✅ REST APIs, GraphQL, WebSockets ✅ Microservices and async architecture ✅ Celery, Redis, AsyncIO, background jobs ✅ OAuth2, JWT, RBAC, multi-tenant SaaS architecture ✅ Third-party API integrations: payments, accounting, CRM, AI services Frontend Development ✅ React.js, Next.js, TypeScript ✅ Redux Toolkit, React Query, React Hook Form ✅ Tailwind CSS, Chakra UI, Material UI, Bootstrap ✅ SaaS dashboards, admin panels, responsive web apps ✅ SPA, SSR, SSG, reusable component architecture Databases & Data Processing ✅ PostgreSQL, MySQL, SQLite ✅ SQLAlchemy, Alembic, Django ORM ✅ MongoDB, Redis, Elasticsearch ✅ Pandas, NumPy, ETL workflows ✅ Data processing and automation pipelines Cloud, DevOps & Deployment ✅ AWS: EC2, S3, Lambda, ECS, RDS, CloudWatch ✅ Docker, Docker Compose ✅ CI/CD with GitHub Actions and GitLab CI ✅ NGINX, Caddy, load balancing ✅ Production deployment, monitoring, and scaling Why clients choose me 🔹 I understand both business goals and technical implementation 🔹 I build clean, scalable, production-ready architecture 🔹 I communicate clearly and keep the process transparent 🔹 I can work independently or as part of a team 🔹 I focus on long-term maintainability, not quick hacks If you need a developer who can build a SaaS product, an AI-powered platform, an automation system, or a full-stack web application, I’d be happy to help. Let’s discuss your project and find the best technical solution for your business. Ich spreche auch Deutsch und stehe Ihnen gerne für weitere Diskussionen oder Zusammenarbeit zur Verfügung.