You will get Autonomous AI Agent System React Node.js Ral-time Pipeline
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Project details
Building an autonomous AI agent system requires robust real-time data pipelines, precise state management, and reliable backend orchestration that doesn't fail mid-execution. Having spent over 12 years writing code and shipping 100+ production apps, I build custom AI agent architectures tailored to your workflow using React and Node.js.
We will structure your asynchronous message queues, build secure streaming API endpoints, and connect your frontend UI directly to real-time LLM processing loops without the usual race conditions. You get production-ready code.
from the ground up. Having engineered high-volume architectures across 15+ SaaS platforms, I help teams deliver scalable AI systems building reliable infrastructure that performs smoothly under continuous data loads.
I solve technical bottlenecks in:
• React and Node.js real-time data pipeline architecture
• Autonomous AI agent workflows and tool-use orchestration
• Live event streaming, WebSockets, and async task queues
• Vector database memory integration and context retrieval
• Secure API design, token management, and error retries
• End-to-end deployment, testing, and production setup
We will structure your asynchronous message queues, build secure streaming API endpoints, and connect your frontend UI directly to real-time LLM processing loops without the usual race conditions. You get production-ready code.
from the ground up. Having engineered high-volume architectures across 15+ SaaS platforms, I help teams deliver scalable AI systems building reliable infrastructure that performs smoothly under continuous data loads.
I solve technical bottlenecks in:
• React and Node.js real-time data pipeline architecture
• Autonomous AI agent workflows and tool-use orchestration
• Live event streaming, WebSockets, and async task queues
• Vector database memory integration and context retrieval
• Secure API design, token management, and error retries
• End-to-end deployment, testing, and production setup
Programming Languages
PHP, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$8,000
|
Standard
$16,000
|
Advanced
$32,000
|
|---|---|---|---|
| Delivery Time | 20 days | 40 days | 70 days |
Number of Revisions | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
23 reviews
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SD
Shelomo D.
Oct 25, 2024
Full Stack Developer
Working with Sergey has been a great experience. His commitment and professional attitude ensure that every project is done well and on time. Sergey consistently provides clear and organized ideas, which improve our teamwork and lead to excellent outcomes. His skill in aligning with our goals makes him an essential partner. I highly recommend Sergey and can't wait to collaborate with him again.
SD
Shelomo D.
Jan 11, 2023
Fullstack Developer
Sergey has shown excellent technical skills and a solid understanding of software development principles. Their coding is clean and well-organized, with a focus on maintainability and scalability. He works well in a team, and are able to effectively communicate and collaborate with other team members. He has also shown a strong ability to learn new technologies and adapt to changing requirements.
YB
Yonatan B.
May 31, 2021
Full Stack | React & Node.js
Sergey is an absolute asset. Dedicated, communicative and highly professional developer. It was a pleasure working with him for so long. We hope to extend our work in future projects. We highly recommend Sergey as a full stack developer.
YB
Yonatan B.
Nov 30, 2020
Full Stack Needed | React & Node.js
Sergey has proved himself to be one of the best developers we ever worked with. Communication is great, execution is stellar and the quality of work is amazing. Would highly recommend hiring him for complex projects. Looking forward to our next project!
RS
Ruslan S.
Nov 2, 2020
Senior JavaScript Developer
Sergey is a responsible and professional developer who moved us to the next level in terms of code quality and architecture, thank you!
About Serhii
Senior AI Full-StackDeveloper | Next.js, Node.js | SaaS, AI agents
100%
Job Success
Zaporizhzhya, Ukraine - 8:41 am local time
With 12+ years of engineering and 100+ delivered projects, I build robust Next.js and NestJS systems that don't break under heavy traffic.
Whether you need a rock-solid Next.js frontend, a NestJS modular backend, or secure Stripe subscription billing logic, I build systems that perform from day one. No fluff, no endless project management layers - just direct engineering execution.
What I build & scale:
Full Stack SaaS apps: React, Next.js, Node.js, and TypeScript architectures.
AI & RAG pipelines: custom AI agents, LangChain integrations, smart model routing, and vector databases.
Payment orchestration: Stripe subscriptions, multi-provider routing, idempotency, and webhook handling under load.
Backend performance: PostgreSQL, MySQL, AWS, and Redis caching layers with strict security boundaries.
📊 Proven track record:
AI-powered CRM & SaaS: Shipped a custom React app in 6 weeks, handling 500K+ enterprise documents inside an optimized pgvector/langChain pipeline while cutting infrastructure costs by 40%.
B2B E-commerce & FinTech: executed seamless payment migrations and built Stripe graduated pricing subscription architectures with 0% transaction failure rates.
100+ Successful Deliveries: backed by 12+ years of hands-on engineering experience and a 100% success mindset.
Let's build your scalable MVP or perform a thorough security and performance pass.
Send a message or hit Invite to schedule a quick introduction chat today.
Steps for completing your project
After purchasing the project, send requirements so Serhii can start the project.
Delivery time starts when Serhii receives requirements from you.
Serhii works on your project following the steps below.
Revisions may occur after the delivery date.
Autonomous AI Agent System Execution
Depending on your selected tier, I build your core agent MVP or deliver the complete production-ready real-time pipeline. I apply performance-first patterns, implement secure data layers, and ensure smooth end-to-end autonomous execution.