You will get AI / LLM integration by full stack node.js react expert
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Project details
You will get AI / LLM integration delivered by a senior full stack node.js react engineer with 10+ years of production experience. This project is designed for startups and teams that need reliable AI features implemented into real systems — not experiments or demos.
I work as a full stack developer and node.js developer, integrating AI and LLM capabilities into existing or new products using a sprint-based approach. This means you are booking senior engineering time focused on clean architecture, stability, and measurable progress.
Typical use cases include AI-powered automation, ChatGPT or OpenAI integrations, RAG pipelines, backend logic, and frontend integration in React or Next.js applications. As a mern stack developer, I focus on scalable, maintainable solutions that can be safely extended after the sprint.
You are not buying a fixed feature list. You are getting senior execution, clear communication, and production-ready source code. By the end of the sprint, you will have working AI functionality, documented decisions, and a clear path for next steps — whether through follow-up sprints, a custom offer, or an hourly contract.
I work as a full stack developer and node.js developer, integrating AI and LLM capabilities into existing or new products using a sprint-based approach. This means you are booking senior engineering time focused on clean architecture, stability, and measurable progress.
Typical use cases include AI-powered automation, ChatGPT or OpenAI integrations, RAG pipelines, backend logic, and frontend integration in React or Next.js applications. As a mern stack developer, I focus on scalable, maintainable solutions that can be safely extended after the sprint.
You are not buying a fixed feature list. You are getting senior execution, clear communication, and production-ready source code. By the end of the sprint, you will have working AI functionality, documented decisions, and a clear path for next steps — whether through follow-up sprints, a custom offer, or an hourly contract.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Security, W3C Markup Validation ServiceWhat's included
| Service Tiers |
Starter
$1,000
|
Standard
$2,000
|
Advanced
$3,200
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 15 days |
Number of Revisions | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$100Frequently asked questions
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MT
Marrew T.
May 20, 2026
SaaS Application Build - Python
Great experience, fair and good communication.
MT
Marrew T.
Nov 5, 2025
Marrew Quotation Application - MVP
After interviewing several candidates, I decided to move forward with Volodymyr and his team — and I’m very glad I did. They successfully took my concept from Figma to a fully functioning application with great efficiency and attention to detail.
Throughout the process, communication was clear, transparent, and consistent. I always knew where things stood, and they were proactive in providing updates and clarifications. It’s clear they have strong technical knowledge and a solid process for managing development work.
I trust this team completely and look forward to continuing our collaboration in a Scrum format as we move into the next phase of the project, and eventually a longer-term retainer. Highly professional, knowledgeable, and reliable — I’d definitely recommend them to anyone looking for a capable and trustworthy development partner.
Throughout the process, communication was clear, transparent, and consistent. I always knew where things stood, and they were proactive in providing updates and clarifications. It’s clear they have strong technical knowledge and a solid process for managing development work.
I trust this team completely and look forward to continuing our collaboration in a Scrum format as we move into the next phase of the project, and eventually a longer-term retainer. Highly professional, knowledgeable, and reliable — I’d definitely recommend them to anyone looking for a capable and trustworthy development partner.
KS
Kamran S.
Aug 18, 2025
WooCommerce Store With Multiple Features customized for specific market
THE BEST TEAM YOU CAN FIND
KS
Kamran S.
May 26, 2025
Ongoing ReactJS/NodeJS work
A++++ Hihgly Recommended. They know what they are doing and they care
FA
Florian A.
Apr 30, 2025
.NET Developer Needed for Simple Integration with OpenAI API
The task is done perfectly well. Speed, quality, expertise! Thanks to Vova and Vestov team!
About Volodymyr
AI/SaaS Technical Partner | Senior React Node FastAPI Team
100%
Job Success
Kyiv, Ukraine - 12:29 pm local time
You work directly with me as the founder, AI/web technical lead, and delivery partner. I’m currently pursuing a Master’s in Computer Science with a focus on AI & Machine Learning, combining formal AI/ML depth with hands-on product delivery.
My team handles implementation across frontend, backend, AI integration, QA, UX/UI, and DevOps when needed.
This gives you senior engineering capacity without the hiring overhead or large-agency friction.
We are a strong fit when the project needs more than “just coding”: architecture, product thinking, clean delivery, technical risk reduction, and a team that can understand complex business logic.
What we build:
• SaaS platforms and internal business systems
• AI-powered web applications and automation workflows
• Marketplaces, dashboards, admin panels, and client portals
• Multi-tenant products with roles, permissions, billing, and workflows
• REST APIs, backend services, integrations, and data-heavy systems
• Legacy codebase refactoring, stabilization, and scaling
• MVP-to-production builds for startups and product teams
Core stack:
Frontend: React, Next.js, Remix, TypeScript, Tailwind, Radix UI
Backend: Node.js, Express, NestJS, FastAPI, Django, Laravel
Databases: PostgreSQL, MongoDB, Redis, Prisma, SQLAlchemy, Drizzle
AI: OpenAI, Gemini, Claude, Groq, embeddings, RAG-style workflows, summarization, classification, automation
Infrastructure: Docker, AWS, GCP, Vercel, Render, Fly io, CI/CD
How we work:
Think twice and code once. My personal and my team's principle.
That means we care about the product, data model, architecture, user workflows, security, deployment path, and long-term maintainability. Speed matters, but sustainable speed comes from clear decisions and fewer avoidable mistakes.
You can bring us in for:
• AI/SaaS code audit and technical due diligence
• AI feature integration or automation sprint
• Full-stack SaaS development
• Backend/API architecture and implementation
• Legacy system refactoring and modernization
• Dedicated senior development capacity
• Long-term technical partner retainer
Best fit:
• SaaS founders and product leaders
• AI, marketplace, fintech, health, humanitarian, or operations-heavy products
• Existing codebases that need clarity, stabilization, or acceleration
• Teams that want senior ownership without hiring full-time engineers
• Clients who value communication, architecture, and production quality
Steps for completing your project
After purchasing the project, send requirements so Volodymyr can start the project.
Delivery time starts when Volodymyr receives requirements from you.
Volodymyr works on your project following the steps below.
Revisions may occur after the delivery date.
Technical review & sprint planning
Review requirements, existing codebase, and define a clear engineering sprint scope and priorities.
AI / LLM integration or implementation
Implement or refactor AI/LLM features (OpenAI, ChatGPT, RAG, automation) in a production-ready way.