Browse categories
Explore
Fiverr Pro
English
$
USD
I will be your python developer for fastapi backends, apis and ai integrations
Kumaresh Dey
Level 2
5.0
5.0
Gig Summary
About this gig
Need a Python backend that is fast, clean and ready to grow? I build production APIs and backend services, and add AI features where they help.
What I build:
- REST and GraphQL APIs with FastAPI, Django or Flask
- Backend services on PostgreSQL, MongoDB or Redis, with auth and background jobs (Celery, SQS, RabbitMQ)
- AI integrations: connect OpenAI, Claude or Gemini to your app, with RAG over your data
- Data pipelines and automation scripts that run on a schedule
- Docker setup and deployment to AWS or GCP
Experience: 4+ years of production backend work. I built a Python platform serving 120k+ users, cut API response times by 35% through PostgreSQL tuning, and ran 300k+ background jobs a month on Celery and SQS.
You get documented, tested code and a short walkthrough of how to run it.
Send me your requirements before ordering and I'll confirm scope and timeline.
Get to know Kumaresh Dey
Kumaresh Dey
AI Engineer for AI Agents, RAG, MCP and Claude Code, Python Backend
Level 2
- FromIndia
- Member sinceJul 2023
- Avg. response time1 hour
- Last delivery2 months
Languages
Hindi, English
AI engineer and Python backend developer with 4+ years of production experience. I build GenAI tooling on an enterprise data platform: RAG pipelines, text-to-SQL, AI agents and MCP integrations on Snowflake and AWS. Before that I built backend systems serving 120k+ users and data pipelines that collected 600k+ records. On Fiverr I set up the right AI workflow and tool stack for your budget, configure Claude Code and MCP servers, build AI agents and RAG chatbots, and deliver reliable web scraping. Send me your use case and I'll tell you plainly what will work.
My Portfolio
FAQ
Can you work on my existing codebase?
Yes. I start by reading the code and agreeing on scope with you, then work on a separate branch so your main code stays safe until you approve the changes.
Where do you deploy?
AWS or GCP, usually with Docker. If a smaller budget fits better, I can deploy to Render, Railway or a VPS instead.
Do you write tests and documentation?
Yes. I add tests for the endpoints and logic I build, plus a README that explains how to run, test and deploy the project.
Reviews
8 reviews for this Gig
| (8) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
W wellwrap
United States
Working with him again
$50
Price
4 days
Duration
Helpful?L landrew1
United States
This is the only Seller that I’ve tried that is consistent when it comes to being able to make a GUI executable script that I can install and run on my computer. Prior to making the script, he will test the website you wish to scrape and tell you if it can be done for a reasonable price (w/rotating proxies,...
$100-$200
Price
4 days
Duration
D 
Seller's Response
Helpful?C clockman7
United States
This guy is amazing! He was able to complete a project that others weren't able to, and he did it quickly. He made my life simple, charged a reasonable price, and went above and beyond to make sure to get the job done.
$50-$100
Price
2 days
Duration
Helpful?L landrew1
United States
Seller created a script that allows me to sort through a very large list of email addresses and remove emails based on a certain criteria. The script works quickly and flawlessly. This Seler is fast, reasonable and very easy to work with. He definitely knows his stuff and takes whatever time is necessary...
$50-$100
Price
2 days
Duration
Helpful?H 
hesammontazer
Germany
We are very happy with the solution he customised based on our atomisation process 🙏
$50-$100
Price
5 days
Duration
Helpful?
Reviews
8 reviews for this Gig
| (8) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
W wellwrap
United States
Working with him again
$50
Price
4 days
Duration
Helpful?L landrew1
United States
This is the only Seller that I’ve tried that is consistent when it comes to being able to make a GUI executable script that I can install and run on my computer. Prior to making the script, he will test the website you wish to scrape and tell you if it can be done for a reasonable price (w/rotating proxies,...
$100-$200
Price
4 days
Duration
D Seller's Response
Helpful?C clockman7
United States
This guy is amazing! He was able to complete a project that others weren't able to, and he did it quickly. He made my life simple, charged a reasonable price, and went above and beyond to make sure to get the job done.
$50-$100
Price
2 days
Duration
Helpful?L landrew1
United States
Seller created a script that allows me to sort through a very large list of email addresses and remove emails based on a certain criteria. The script works quickly and flawlessly. This Seler is fast, reasonable and very easy to work with. He definitely knows his stuff and takes whatever time is necessary...
$50-$100
Price
2 days
Duration
Helpful?H hesammontazer
Germany
We are very happy with the solution he customised based on our atomisation process 🙏
$50-$100
Price
5 days
Duration
Helpful?
