Browse categories
Explore
Fiverr Pro
English
$
USD
I will build production ai agents and multi agent systems with python
Zigen
About this gig
I build production AI agents that actually ship - not demos that break on day 2.
WHAT YOU GET
- AI agents connected to real LLM APIs (OpenAI GPT, Anthropic Claude, DeepSeek)
- Tools and data sources wired in: search, databases, internal APIs
- RAG pipelines: your documents ingested, chunked, embedded, queryable
- FastAPI backend, clean deployment to your server or cloud
- Full source code + setup docs, always yours to keep
HOW I WORK
1. You describe the job the agent must do (in plain words, no specs needed)
2. I propose the smallest architecture that gets it done
3. I build, test with real data, and deploy
4. You get a working system + docs + handover walkthrough
WHY ME
- 12 years shipping software; 2 solo apps live on App Store (CN + US)
- 13 merged PRs in major open-source AI repos
- I write maintainable Python/TypeScript, not notebook spaghetti
MESSAGE ME with your use case before ordering - I reply within a few hours and will tell you honestly if your budget fits the scope.
Get to know Zigen
Zigen
FullStack Developer Web Mobile Apps AI App Developer
- FromChina
- Member sinceJun 2026
Languages
Chinese, English
Full-stack dev from Shenzhen, China (UTC+8, flexible US/EU overlap). 2 apps live on the App Store (US + China), built solo end-to-end: SwiftUI client, FastAPI backend, multi-agent AI engine, subscriptions with server-side verification. I build: AI agents & multi-agent systems (Python), iOS apps with AI features (Swift), App Store rejection rescue, Claude Code workflow setup. 12 yrs shipping software; 13 merged PRs in major open-source AI repos. Every delivery: full source code + docs. Message me before ordering — honest scoping, always.
My Portfolio
FAQ
Who pays for the LLM API costs (OpenAI, Claude, DeepSeek)?
You connect your own API keys — you keep full control and pay providers directly, no markup from me. I'll recommend the most cost-effective model for your use case (often DeepSeek or GPT-mini class, usually under $10/month for typical workloads).
Which framework do you use — LangChain, CrewAI, LangGraph, or custom?
I pick the smallest architecture that solves your job. Simple tool-use agents: plain Python + OpenAI/Anthropic SDK. Complex multi-step workflows: LangGraph or CrewAI. If you already use n8n, I can build the agent as an n8n workflow node so your team can maintain it visually.
What's the difference between an AI agent and a chatbot?
A chatbot answers messages. An agent takes actions: it can search your database, call APIs, update your CRM, and run multi-step workflows autonomously — then reports back. My builds are agents that do work, not just talk.
What do I need to provide to start?
Just describe the job in plain words — what should happen automatically, what tools/data are involved. No technical spec needed. I'll propose the smallest architecture that gets it done, confirm the plan with you, then build.
Do I own the code?
Yes — 100%. You get the full source code, setup docs, and a handover walkthrough. No lock-in, no subscriptions to me. If you want changes later, any developer (or I) can pick it up.
