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Fiverr Pro
English
$
USD
I will build ai applications, integrations and chatbots
Tiago Peres
Vetted Pro
Level 2
5.0
5.0
Gig Summary
Vetted by Fiverr Pro
Tiago Peres was selected by the Fiverr Pro team for their expertise.
About this gig
I build AI features that hold up in production: assistants over your own documents, RAG systems, agents that call your tools, and LLM features inside the product you already run.
What you get:
- A working system, not a demo: retrieval, prompts and tool-calling built around your data
- Evals, so we know how often it is right before your users find out
- Guardrails and monitoring for the cases where it is wrong
- A clean handoff: code, documentation and a walkthrough
Recent work: an AI internal-audit platform at PwC, a scientific-intelligence platform for Nestlé that made terabytes of internal data searchable, and a legal AI platform running serverless on Cloud Run.
Stack: Python, FastAPI, LangChain and LangGraph, OpenAI, Claude and Azure OpenAI, PostgreSQL and vector search, React and Next.js, Docker, Kubernetes and Terraform, on AWS, GCP or Azure.
Send me the problem and the data you have. I'll tell you whether AI is the right tool for it, and if it is, what I would build first and what it costs.
Get to know Tiago Peres
Tiago Peres
Vetted Pro
AI Engineer and Full Stack Developer
Level 2
Tiago Peres is part of the Fiverr Pro catalog and has been hand-picked by a dedicated Fiverr Pro team for their skills and expertise.
Vetted for
AI Development
Cloud Computing
DevOps Engineering
Website Development
Website Maintenance
- FromPortugal
- Member sinceDec 2017
- Avg. response time1 hour
- Last delivery1 month
Languages
English, Portuguese, Spanish, German
I take AI from idea to production: RAG, agents, and LLM features teams can trust, with the retrieval, evals, guardrails, and monitoring real systems need, plus the full-stack app and cloud around them.
10+ years shipping software, from startups to Nestlé, PwC, and EDP, for clients anywhere in the world. Stack: Python, FastAPI, React, LangChain, AWS/GCP/Azure, Kubernetes, Terraform.
Tell me the one problem you're stuck on and I'll tell you whether I can help, and exactly how. Clear scope and a fixed price before we start, and I read every brief myself.
Among my clients
UBS
Investment Banking
PwC
Business Services & Consulting
Nestlé
Food Products
Crunchbase
Information Technology (IT)
My Portfolio
Other AI Development Services I Offer
FAQ
Which package should I choose?
AI Integration adds one model-powered feature to a system you already run. AI Chatbot is an assistant over your own content, on the platform you choose. AI Platform is a full product with the retrieval, evals and monitoring a real system needs. Not sure? Message me and I will recommend one.
Which models do you use?
Whichever fits: OpenAI, Claude, Gemini, or open-weights models running on your own infrastructure when the data cannot leave. It is a constraints question, not a preference.
Can it run on our own infrastructure?
Yes. I have deployed on Azure, AWS and GCP, serverless on Cloud Run, on OpenShift and on on-premise Kubernetes, including self-hosted open-weights models where compliance required it.
How do you stop it making things up?
By grounding answers in retrieved sources, showing citations, and running an eval set that catches regressions before your users do. Anything the system cannot answer should say so rather than guess.
Can you work with our existing codebase?
Yes. Most of this work is joining something that already exists rather than starting a new repository.
Do we get the code?
All of it, in your repository, with the infrastructure defined as code.
Reviews
6 reviews for this Gig
| (6) | ||
| (0) | ||
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
B 
bestrategicit
Canada
Working with Tiago was an exceptional experience. He didn't just deliver exactly what was asked—he consistently went above and beyond to ensure the final product was perfect. He proactively identified improvements in my client-facing deck, streamlined the data handoff process, and provided incredibly...
$2,500-$5,000
Price
2 weeks
Duration
Helpful?A ahmadalk
Qatar
Ongoing collaborationGreat 3rd time working with Tiago and we’ll keep working together!
$5,000-$10,000
Price
6 days
Duration
Helpful?A ahmadalk
Qatar
Ongoing collaborationThis is my 3rd time working with Tiago. I would highly recommend his services.
$5,000-$10,000
Price
5 days
Duration
Helpful?A ahmadalk
Qatar
Ongoing collaborationOnce again Tiago proves that he is the man for the job. Really assisted us on a task where many other developers failed. Tiago is not only extremely knowledgeable but he is also extremely responsive and works very hard on any given tasks
$1,000-$2,500
Price
1 day
Duration
Helpful?A ahmadalk
Qatar
Ongoing collaborationTiago went above and beyond for us
$400-$600
Price
4 days
Duration
Helpful?1 person found this review helpful.
Reviews
6 reviews for this Gig
| (6) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
B bestrategicit
Canada
Working with Tiago was an exceptional experience. He didn't just deliver exactly what was asked—he consistently went above and beyond to ensure the final product was perfect. He proactively identified improvements in my client-facing deck, streamlined the data handoff process, and provided incredibly...
$2,500-$5,000
Price
2 weeks
Duration
Helpful?A ahmadalk
Qatar
Ongoing collaborationGreat 3rd time working with Tiago and we’ll keep working together!
$5,000-$10,000
Price
6 days
Duration
Helpful?A ahmadalk
Qatar
Ongoing collaborationThis is my 3rd time working with Tiago. I would highly recommend his services.
$5,000-$10,000
Price
5 days
Duration
Helpful?A ahmadalk
Qatar
Ongoing collaborationOnce again Tiago proves that he is the man for the job. Really assisted us on a task where many other developers failed. Tiago is not only extremely knowledgeable but he is also extremely responsive and works very hard on any given tasks
$1,000-$2,500
Price
1 day
Duration
Helpful?A ahmadalk
Qatar
Ongoing collaborationTiago went above and beyond for us
$400-$600
Price
4 days
Duration
Helpful?1 person found this review helpful.
