Anton K.

Full-Stack Developer (React / Next js / Node js) focused on scalable, high-performance web apps and AI automation. I help startups and companies ship production-ready MVPs, SaaS platforms, dashboards, and enterprise web applications — from UI to backend, database, cloud, and deployment. 👋 Hey there! If you need someone who can own features end-to-end, communicate clearly, and deliver clean, maintainable code — I’m here to help. My typical work includes frontend (React/Next.js), backend (Node/Nest), databases (Postgres/Prisma/Supabase), AWS/Vercel, and AI/LLM integrations for automation and productivity. What I build (common project types) ✅ SaaS / MVP development (fast iterations, scalable architecture) ✅ Enterprise & high-load web apps (performance, caching, background jobs, monitoring) ✅ Dashboards / admin panels / analytics (role-based access, data visualization, exports) ✅ API platforms & integrations (REST, GraphQL, Webhooks, 3rd-party APIs) ✅ UI redesigns & Next.js migrations (Pages → App Router, SSR/SSG, SEO improvements) ✅ Automation with AI / LLM (workflows, assistants, content ops, support tools) AI / LLM automation I can implement 🤖 OpenAI / LLM integrations that actually work in production (not just demos): Automation workflows: content generation, summarization, classification, enrichment Tool/function calling (agent-like flows, structured outputs, validations) RAG / Knowledge base chat (embeddings + retrieval + citations/grounding) Vector search: pgvector, Pinecone, Weaviate (depending on needs) Prompt engineering + reliability: guardrails, retries, schema validation, evals Keywords: AI Integration, LLM, OpenAI, Chatbot, RAG, Embeddings, Vector DB, Agents, Automation, Function Calling, Prompt Engineering, Structured Output. Typical stack (battle-tested & modern) 🔥 Frontend React, Next.js (App Router, React Server Components), TypeScript SSR/SSG/ISR, SEO, performance optimization, Core Web Vitals State/data: Zustand, Redux Toolkit, React Query / TanStack Query UI: TailwindCSS, MUI, shadcn/ui, Chakra UI (as needed) Testing: Playwright, Cypress, Vitest/Jest ⚙️ Backend Node.js, NestJS, Express, Fastify REST API, GraphQL (Apollo), WebSockets, webhooks Background jobs/queues: BullMQ, Redis, cron Auth: JWT, OAuth, NextAuth / Auth.js, RBAC 🗄️ Database & Data PostgreSQL, Prisma, Supabase Redis caching, rate limiting, pagination, indexing Data pipelines: ETL-ish processing for analytics/automation ☁️ Cloud & DevOps AWS (EC2, RDS, S3, CloudFront, API Gateway, Lambda), Vercel Docker, CI/CD (GitHub Actions), logging/monitoring (Sentry, CloudWatch) Secure deployments, environment management, secrets, performance tuning How I work (what you can expect) ✅ Fast start: quick audit of requirements + scope + risks ✅ Milestones & weekly updates: you always know what’s happening ✅ Clean, maintainable code: TypeScript, reusable patterns, documentation ✅ Production mindset: performance, security, monitoring, scalability ✅ Ownership: from idea → implementation → deployment → support What I can do for you right now Build an MVP or SaaS in Next.js + Node.js + Postgres (Prisma/Supabase) Add AI automation (OpenAI/LLM) to reduce manual work Fix performance issues (rendering, API bottlenecks, DB queries, caching) Refactor legacy React/Next.js codebase Create robust REST/GraphQL APIs and integrations (Stripe, webhooks, 3rd-party) 🤝 Let’s collaborate! Send me a short message with: 1)what you’re building 2) current stack (if any) 3) your target deadline I’ll propose the fastest and safest plan to ship. React, React js, Next js, NextJS, App Router, TypeScript, JavaScript, Frontend, Backend, Full-Stack, Node js, NestJS, Express, Fastify, REST API, GraphQL, Apollo, WebSockets, PostgreSQL, Postgres, Prisma, Supabase, Redis, Docker, AWS, EC2, RDS, S3, CloudFront, API Gateway, Lambda, Vercel, CI/CD, GitHub Actions, Stripe, Authentication, OAuth, JWT, RBAC, SaaS, MVP, Dashboard, Admin Panel, Enterprise, High-Load, Performance Optimization, SEO, Core Web Vitals, Testing, Playwright, Cypress, OpenAI, LLM, AI Integration, RAG, Embeddings, Vector Database, pgvector, Chatbot, Automation, Agents, Function Calling.