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Nicolas Arthur

Available for new projects

About

Full-stack engineer focused on applied AI. I take ideas from prototype to production efficiently.

Nicolas Arthur Raulino Oliveira

AI Software Engineer

AI Software Engineer specializing in enterprise LLM systems, Retrieval-Augmented Generation (RAG), and multi-agent orchestration. Proven ability to architect and deploy production-grade AI platforms handling large-scale unstructured data, combining scalable backend engineering with modern full-stack development.

7+Projects delivered

3+Companies served

5+Years of experience

Beyond code

Music · Development · Gaming · Racing · Artificial Intelligence

PythonLangChainNext.jsReactTypeScriptFastAPIPostgreSQLAzureDockerTailwindThree.jsJavaGit

How we work

A clear and transparent process. you’ll know exactly what to expect at every stage.

Free diagnosis

A 30-minute call to understand the problem, constraints, and the expected outcome. No cost, no strings attached.

Mockup or demo

I bring a visual proposal or a working prototype so you can validate the solution before any commitment.

Development

Once approved, I execute the project in short sprints with visible deliveries and continuous adjustments.

Delivery and support

I deploy to production, document the system, and support the initial run until everything is running smoothly.

Services

Web systems and AI-powered solutions: from intelligent automation to fully built products for businesses.

Automation with Artificial Intelligence

Your team loses hours on repetitive tasks: reading documents, filling spreadsheets, answering the same questions. The result is delays, errors, and less time for what really matters. I automate these processes so you can make decisions faster, cut rework, and free people for higher-impact work, without hiring a huge team.

Web Apps from Zero to Production

You have an idea that could generate revenue or solve a real problem, but it stays on paper or in spreadsheets. You're missing a product people can actually use. I build the full system: from first draft to live, with real users. You get a product that delivers value, scales with demand, and opens the door to grow the business.

Scalable Architecture & Infrastructure

Your system works today, but when the business grows everything freezes, breaks, or becomes a black box nobody understands. The fear of changing something and bringing it all down paralyzes the team. I design and organize the foundation of your system so it can handle growth, traffic spikes, and future changes, you scale with confidence, without throwing everything away and starting over.

Prototypes and mockups from your ideas

Your idea lives in your head or in scattered notes, and it's hard to show partners, investors, or clients what you want to build. Without something visual and clickable, alignment is tough and the risk of betting on the wrong project goes up. I turn your idea into prototypes and mockups that everyone can see, use, and validate, so you decide with clarity before putting more time and money on the table.

Chatbots for your business

Customers expect fast answers and your team can't keep repeating the same information all day. Support gets delayed, opportunities are lost, and repetitive tasks wear people down. An assistant that answers frequent questions 24/7 cuts wait time, frees the team for cases that really need a human, and improves the experience of everyone who reaches out to your brand.

Portfolios and sites for your business

You or your company need a clear, professional presence online: anyone seeing your work for the first time should quickly understand what you do and why to trust you. An outdated site or no portfolio at all lets opportunities slip. I create pages and portfolios that build credibility, showcase your work, and make that first contact easy, so you close more deals and get found by people looking for what you offer.

No commitment

Free 30-minute consultation

I’ll understand your problem, assess your context, and propose a clear solution. No cost, no pressure.

Book a call

Testimonials

"I had the pleasure of building several solutions with him, mostly in Python — our favorite language for automating day-to-day tasks. I'm sure he'll be an outstanding professional reference in the years to come."

Software Developer, Java & Python

"He always stood out for his effort, discipline, and commitment. He showed above-average maturity, learning beyond what was required and anticipating challenges. The kind of professional who doesn't wait for opportunities — he prepares for them."

Backend Developer, Java & Spring Boot

"Nicolas is a gold-standard professional. He started with us as an intern, but from the beginning showed he was someone worth betting on. Always full of ideas and with a sharp vision on technology, AI, and development."

Head of Product, ERPs & GovTech

Latest

Updates, certifications, and what I’m currently building.

Sep 2025

Joined Alvarez & Marsal as AI Engineer Intern

A new start, Alvarez & Marsal gave me the opportunity to work with IA and development for capital projects.

Nov 2025

NVIDIA AI Day

Attended NVIDIA AI Day, trends in generative AI and inference acceleration.

May 2025

My mom joined Jtech Veolia with me

Special story: I worked at Jtech Veolia and my mom received the opportunity to work with me.

Sep 2024

Started Systems Analysis degree at IFSC

Associate Degree in Systems Analysis and Development at Federal Institute of Santa Catarina.

Follow on LinkedIn

Real-time updates on my professional journey.

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Get in touch

Have a project or challenge in mind? Let’s talk and find the right solution.