You will get Full-Stack Marketplace Development — From Idea to Scalable Platform
Top Rated
Project details
Full-stack marketplace or multi-vendor platform in Node.js and React or
Next.js.
Included in the Starter tier: authentication, listings, admin panel,
deployment. Advanced tiers add payments, search and filtering, messaging,
and role-based access.
Stack: React, Next.js, TypeScript, Node.js, Express.js or NestJS,
PostgreSQL or MongoDB, Prisma, REST or GraphQL API, Stripe.
What you receive: source code, deployed environment, and a written handoff of
the architecture.
ITEM 3 - NEW, create this one:
Title: You will get a Full-Stack Web App or SaaS Dashboard in Node.js and
React
Project details:
Full-stack web application or internal SaaS dashboard, built end to end.
Included: React or Next.js frontend, Node.js API, database schema, auth,
admin panel, and deployment.
Stack: React, Next.js, TypeScript, Node.js, Express.js, NestJS, PostgreSQL,
MongoDB, Prisma, REST API, GraphQL.
What you receive: source code, deployed environment, written handoff.
Next.js.
Included in the Starter tier: authentication, listings, admin panel,
deployment. Advanced tiers add payments, search and filtering, messaging,
and role-based access.
Stack: React, Next.js, TypeScript, Node.js, Express.js or NestJS,
PostgreSQL or MongoDB, Prisma, REST or GraphQL API, Stripe.
What you receive: source code, deployed environment, and a written handoff of
the architecture.
ITEM 3 - NEW, create this one:
Title: You will get a Full-Stack Web App or SaaS Dashboard in Node.js and
React
Project details:
Full-stack web application or internal SaaS dashboard, built end to end.
Included: React or Next.js frontend, Node.js API, database schema, auth,
admin panel, and deployment.
Stack: React, Next.js, TypeScript, Node.js, Express.js, NestJS, PostgreSQL,
MongoDB, Prisma, REST API, GraphQL.
What you receive: source code, deployed environment, written handoff.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Localization, Performance OptimizationWhat's included
| Service Tiers |
Starter
$1,000
|
Standard
$1,500
|
Advanced
$2,000
|
|---|---|---|---|
| Delivery Time | 10 days | 15 days | 20 days |
Number of Revisions | 3 | 3 | 3 |
Number of Pages | 10 | 20 | 30 |
Design Customization | |||
Content Upload | |||
Responsive Design | - | ||
Source Code | - | - |
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PK
Pylyp K.
Jun 23, 2026
Senior Full Stack JavaScript Developer React.js Node.js
Illia, thank you for your quick and thorough analysis of our app and for fixing the bugs. You’re an excellent full-stack developer. Your skills in Node, React, and other JavaScript frameworks are top-notch and very valuable to us. We appreciate your dedication. Great developer
AS
Andrii S.
Mar 30, 2026
Urgent Front-End Developer Needed for Stale Product Revamp
About Illia
AI Agent & Full-Stack Developer | Node.js, React, TypeScript
100%
Job Success
Dnipro, Ukraine - 7:51 pm local time
With years of production JavaScript and TypeScript experience, I can take ownership of the complete delivery cycle: understand the business process, design the solution, build the agent and its integrations, deploy it, monitor it, and improve it based on real usage.
🤖 AI AGENTS & AUTOMATION
Custom AI agent development with Claude Code, Codex, OpenAI API, Anthropic API, and custom LLM agent loops.
Agent architecture built around persona, memory, skills, tools, communication channels, and clear responsibility boundaries.
Short-term and long-term memory, persona files, indexing, context compaction, embeddings, metadata, and hybrid search.
Agent platforms and approaches: OpenClaw, Hermes, Trinity, Claude Code, Codex, and custom LLM API workflows.
🧩 FULL-STACK DEVELOPMENT
SaaS platforms, admin panels, analytics dashboards, marketplaces, and e-commerce product.
React and Next.js interfaces connected to Node.js, Express.js, or NestJS backends.
REST and GraphQL APIs, authentication, third-party integrations, and data-heavy applications.
FinTech, MarTech, Web3, travel, and cross-platform React Native products.
Bug fixing, refactoring, performance optimization, and feature development in existing codebase.
⚙️ PRODUCTION DEPLOYMENT & SUPPORT
I work comfortably with Ubuntu VPS environments and production operations. I can deploy updates, inspect logs, diagnose incidents, fix client-reported bugs, and add watchdogs, log monitoring, or alert bots to keep live agents reliable.
📊 BY THE NUMBERS
4+ years building production JavaScript and TypeScript applications.
10+ full-stack products delivered across frontend, backend, APIs, and deployment.
100% Job Success Score.
40–50% faster page loads after React performance refactoring.
25–30% fewer unnecessary re-renders after state-management optimization.
🔥 SELECTED RESULTS
Built a Web3 data layer with Node.js, NestJS, TypeScript, and PostgreSQL to process complex blockchain transaction histories with sub-second query responses.
Delivered a MarTech analytics platform that tracks SEO and AI visibility across ChatGPT, Claude, and Gemini.
Developed secure FinTech dashboards with JWT authentication and real-time views across thousands of financial records.
Shipped a React Native travel application for iOS and Android from one shared codebase.
🛠 CORE STACK
AI: AI Agent Development • Claude Code • Codex • OpenAI API • Anthropic API • LLM Integration • Prompt Engineering • Agent Memory • Qdrant • mempalace • Hybrid Search • Vapi • ElevenLabs
Full Stack: JavaScript • TypeScript • React • Next.js • React Native • Node.js • Express.js • NestJS • REST API • GraphQL • WebSockets • PostgreSQL • MongoDB • Prisma • Mongoose • Redux Toolkit • React Query • Tailwind CSS
Git • SSH • Docker • Docker Compose • Ubuntu • VPS • systemd
🚀 HOW I WORK
✓ I start with the business goal and choose the simplest architecture that can work reliably in production.
✓ I use Claude Code and Codex daily, while reviewing and owning every implementation decision and output.
✓ I provide a clear scope, realistic estimate, and concise written updates throughout delivery.
✓ I stay with the product after launch to monitor, debug, and improve real agent behavior.
Send me your idea, workflow, ticket, or repository. I’ll review it and return with the proposed architecture, open questions, and a practical path to production 🎁
Specialization: Full-Stack Developer, Full-Stack Web Developer, Node.js Developer, React Developer, React.js Developer, Next.js Developer, TypeScript Developer, JavaScript Developer, Express.js Developer, NestJS Developer, REST API Developer, API Integration, Third-Party API Integration, GraphQL Developer, Backend Developer, Front-End Developer, MVP Development, SaaS Development, AI-Powered SaaS, Custom Web Application Development, Dashboard Development, FinTech Developer, MarTech Developer, MongoDB Developer, PostgreSQL Developer, Prisma ORM, Mongoose, Supabase, Redis, AWS Developer, AWS Lambda, Docker, CI/CD, Stripe Integration, Tailwind CSS, React Native, WebSockets, Authentication, Performance Optimization, Bug Fixing, AI Agent Developer, Custom AI Agent Development, AI Automation Developer, LLM API Integration, OpenAI API, Anthropic API, Claude Code, Codex, MCP Integration, Telegram Bot Development, AI Chatbot Development, Vapi Integration, ElevenLabs API.
Steps for completing your project
After purchasing the project, send requirements so Illia can start the project.
Delivery time starts when Illia receives requirements from you.
Illia works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery & Planning
Clarify business goals and target audience Define MVP scope + future roadmap Prepare user flows and key screens Choose tech stack and timeline estimate
UI/UX & Architecture Setup
Create/validate design (Figma or references) Set up project structure, routing, state management Plan database schema and API contracts Configure environments, CI/CD basics, Docker (if needed)