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Fiverr Pro
Nederlands
$
USD
I will develop ai agent for your startup fast
Seth
Over deze dienst
I build production AI agents that ship not demos.
Recent work: a multi-tenant reply engine that drafts sales messages in 17+ languages, with retrieval, per-customer memory, and an analysis layer that tracks how each relationship is going. 900+ automated tests, running live in production.
What I can build for you
Chat agents and copilots grounded in your own data (RAG)
Multi-provider LLM routing with fallback: Claude, Gemini, GPT, DeepSeek, Qwen
Vector search over your documents (PostgreSQL + pgvector)
Long-term memory, conversation analytics, training-data pipelines
Clean REST APIs: tenant API keys, rate limiting, idempotency, background workers
Image, video and audio pipelines
Stack: TypeScript, Node.js, Fastify, PostgreSQL + pgvector, React, Docker, Linux/systemd
You get working code, database migrations, tests, documentation and a deployed service not a notebook that only runs on my machine.
Tell me what you need and I'll say honestly whether it's a 3-day job or a 3-week one.
Maak kennis met Seth
Seth
Full Stack AI Engineer Rust
- Afkomstig uitChina
- Lid sindsmrt 2025
- Gem. reactietijd1 uur
Talen
Chinees, Engels
I have more than 10 years of coding experience, I am speiclized in web3 development, whether you need a secure and efficient trading system or a fully functional smart contract, I can bring your vision to life.
I also develop mobile apps and websites with modern technologies.
Mijn portfolio
Veelgestelde vragen
What do you need from me to start?
Your goal, any documents or data the agent should use, and your AI provider keys (OpenAI, Anthropic or Google). No keys yet? Tell me your use case and I'll recommend which to get and what it costs per month. The first conversation is free.
Which AI models do you work with?
Claude, Gemini, GPT, DeepSeek and Qwen. I usually set up automatic fallback, so if one provider goes down or slows, your product keeps answering instead of erroring. You can switch models later without a rewrite.
Can the agent answer using my own documents?
Yes — that's retrieval (RAG). Your content is chunked, embedded and searched by meaning, so replies are grounded in your material instead of invented. Works with PDFs, help centres, database records and past support tickets.
Do I own the code?
100% yours. You get the full repository, database migrations, tests and setup docs. Nothing is tied to my accounts or servers. I can deploy to your infrastructure or hand everything over for your team to run.
How long does it take?
A focused chatbot or API integration is usually 3-7 days. A full agent with retrieval, memory and an admin view is 2-4 weeks. Send your requirements before ordering and I'll give you a realistic timeline, not an optimistic one.
Can you work with my existing app?
Yes. I add the AI layer to what you already have, usually as a REST API your app calls, so the rest of your system stays untouched. TypeScript/Node is my main stack, but any language can call the service I deliver.
What happens after delivery?
You get a handover walkthrough, documentation, and a support window for bug fixes. Further features, tuning or scaling can continue as a separate order. I don't disappear once the files are delivered.
Is my data kept private?
Yes. I sign an NDA on request, use your own accounts and keys wherever possible, and never reuse your data or content elsewhere. Everything I build can run entirely on infrastructure you control.
