You will get Python AI Developer building Backend with ChatGPT API Integration
Top Rated
Project details
You receive production-ready backend system built by a Python AI developer specializing in API integration and intelligent systems. Includes FastAPI or Django architecture, ChatGPT and GPT API setup, database optimization with PostgreSQL and Redis, and connections to platforms like Bitrix24, When I Work, or Laravel applications. As an AI agent developer, I architect backends that support machine learning workflows, handle async processing with Celery, manage webhooks, and ensure secure authentication. Working as both Python developer and technical product manager, I translate requirements into scalable infrastructure. Result: robust backend supporting AI operations with optimized performance, reduced infrastructure costs, and seamless API integration across your tech stack.
Programming Languages
PythonCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included $50
These options are included with the project scope.
$50
- Delivery Time 7 days
- Number of Revisions 1
23 reviews
(23)
(0)
(0)
(0)
(0)
This project doesn't have any reviews.
JT
Jason T.
Jan 27, 2026
Developer to help move code from Replit to AWS
Incredible job once again - have worked with him for a while now and the work is always top notch - highly recommended!
RE
Reagan E.
Jan 10, 2026
ChatGPT to Qdrant integration
Great partnership in the process
AP
Anthony P.
Jan 9, 2026
Automation Script
Danny did an amazing job and was very responsive whenever I need to change changes or additions to the project. Very professional and would recommend again.
FR
Frank R.
Jul 19, 2025
Creating pinterest pin tilte + description generator
Very happy with the professional work of Denys.
BT
Bogdan T.
Jul 14, 2025
Python Developer for Telegram Bot Maintenance and Improvements
I recently hired Denys to handle the maintenance and improvement of a Python-based Telegram bot, and I couldn't be more satisfied with his work. From the outset, Denys demonstrated a deep understanding of Telegram Bot API, Python best practices, and clean, maintainable code.
He was quick to assess the existing codebase, identified inefficiencies, and proposed practical, effective solutions. Communication throughout the project was clear, timely, and professional. Denys was proactive in suggesting improvements and handled bug fixes swiftly and efficiently, often going above and beyond what was expected.
What impressed me most was his ability to debug and resolve complex issues without requiring constant oversight. He also documented his work well, making future updates easier to manage.
I highly recommend Denys to anyone looking for a reliable and skilled Python developer for Telegram bots or similar backend projects. His technical expertise, accountability, and positive attitude make him a valuable asset to any development team.
He was quick to assess the existing codebase, identified inefficiencies, and proposed practical, effective solutions. Communication throughout the project was clear, timely, and professional. Denys was proactive in suggesting improvements and handled bug fixes swiftly and efficiently, often going above and beyond what was expected.
What impressed me most was his ability to debug and resolve complex issues without requiring constant oversight. He also documented his work well, making future updates easier to manage.
I highly recommend Denys to anyone looking for a reliable and skilled Python developer for Telegram bots or similar backend projects. His technical expertise, accountability, and positive attitude make him a valuable asset to any development team.
About Denys
Python AI Developer | AI Agent Developer | ChatGPT Integration
100%
Job Success
Zhytomyr, Ukraine - 8:09 am local time
What I Build
AI Agents and Automation
As an AI agent developer, I create custom agents for customer service, document processing, and workflow automation. This includes multi-agent architectures, tool design, memory systems, and policy controls using LangChain and similar frameworks.
LLM and GPT Integrations
Production-grade ChatGPT integration with cost optimization, error handling, and fallback strategies. I've helped clients reduce OpenAI API costs by 60-70% while maintaining or improving output quality.
API Integration with Business Systems
I connect AI agents to CRMs, ERPs, and workforce tools. Experience with Bitrix24, HubSpot, When I Work, and custom API integration with existing backends including Laravel and other frameworks.
RAG Systems
Knowledge bases that actually return accurate answers. Vector databases (Pinecone, Weaviate, FAISS), chunking strategies, retrieval tuning, and evaluation pipelines.
Backend Infrastructure
As a Python AI developer and machine learning developer, I build the async processing, queue systems, and infrastructure needed to serve AI at scale using FastAPI and modern Python patterns.
Recent Project Outcomes
- E-commerce: Product search AI agent with 47% conversion improvement
- Healthcare: Medical image processing at 100k images/day with 92% accuracy
- Financial services: RAG document analysis reducing processing time from 6 hours to 6 minutes
- Logistics: Delivery optimization with 73% reduction in failures
Problems I Help Solve
- ChatGPT integration that works in testing but fails under production load
- AI agent development projects stalled after POC phase
- OpenAI API costs growing faster than value delivered
- RAG systems returning irrelevant or hallucinated answers
- API integration between AI systems and existing business tools
- Need a Python AI developer to rescue an existing codebase
How Engagements Work
- Week 1-2: Audit current system, identify bottlenecks and quick wins
- Week 3-4: Architecture design and core AI agent development
- Week 5-6: ChatGPT integration, API integration, optimization, testing
- Week 7-8: Deployment, monitoring, documentation, team handoff
I work well with product managers and technical leads to align AI development with business goals.
Engagement Options
- Rescue/Fix: Stabilizing existing ChatGPT integration or AI agent systems
- Build New: End-to-end AI agent development from requirements to production
- Advisory: Ongoing Python AI developer support and code review
Background
- 50+ production AI systems deployed
- Core expertise: Python, LangChain, multi-agent systems, RAG, GPT/OpenAI/Anthropic APIs, vector databases
- I prioritize clear documentation, maintainable code, and measurable outcomes
What Clients Say
"Delivered a working system in 6 weeks that's now generating significant revenue. Refreshingly practical approach to AI agent development." - CTO, Series B SaaS
"Best ChatGPT integration work we've seen. Helped us move from concept to production faster than expected." - VP Innovation, Fortune 500
Technical Stack
Python, FastAPI, LangChain, LlamaIndex, OpenAI API, Anthropic, AWS Bedrock, Pinecone, Weaviate, FAISS, Docker, AWS/GCP/Azure, PostgreSQL, Redis
Next Step
If you're looking for a Python AI developer to build or fix your AI agent systems, send a brief description of your project. I'll review it and share honest feedback on approach, timeline, and fit.
Currently booking for June. Limited to 3 active AI agent development projects.
Steps for completing your project
After purchasing the project, send requirements so Denys can start the project.
Delivery time starts when Denys receives requirements from you.
Denys works on your project following the steps below.
Revisions may occur after the delivery date.
Figuring out client needs