Hi, I'm

William Nakata AI Automation Engineer & Full Stack Developer

I design multi-agent systems and RAG pipelines,

build scalable backends end to end,

and turn AI ideas into production automation.

Experience

View my work Get in touch

CurrentlyBrazil · GMT-3--:--:--

About

I am a Full Stack Developer bridging the gap between robust enterprise architecture and the new wave of Generative AI.

My focus is on modernizing legacy ecosystems while building the next generation of AI-powered internal tools. Currently driving innovation initiatives, I specialize in:

William Nakata

AI Automation Engineer & Full Stack Developer

Brazil · GMT-3

Enterprise Development: Designing and optimizing scalable backend solutions with .NET (C#) and SQL Server, coupled with modern frontends in Angular.
AI Engineering & Agents: Going beyond simple API calls. I architect complex AI Agents and workflows using LangChain, LangGraph, and Python, integrating LLMs directly into corporate systems via Azure AI Foundry.
Innovation & Automation: Prototyping and deploying digital products that solve real business problems, utilizing Node.js and automation tools like n8n.

Skills

22 skills · 3 groups

AI & Automation

LangChain
LangGraph
AI Agents
RAG
Azure AI Foundry
OpenAI API
Vector Databases
LangSmith
n8n
RPA

Backend & Frontend

C# (.NET Core)
Entity Framework Core
Python
TypeScript
Angular
Node.js
REST APIs

Data, Cloud & DevOps

SQL Server (T-SQL)
ETL Pipelines
Power BI
Docker
Testing

Languages

Portuguese
Native
English
Intermediate

Experience

Toledo Piza

Full Stack Engineer

Mar 2025 – Present

Hybrid role bridging robust Software Engineering and Applied AI, focused on modernizing internal systems and deploying Generative AI solutions integrated with enterprise workflows. Key Deliverables:

AI Engineering & LLM Integration: Spearheaded the prototyping and execution of AI-powered tools fully integrated with internal ecosystems. Leveraged LangChain and LangGraph to architect and orchestrate complex agentic workflows and LLM interactions.
Full Stack Development: Designed, maintained, and evolved scalable applications using C# (.NET) for backend and Angular (TypeScript) for frontend, ensuring code quality and system stability.
Process Automation: Developed high-impact automations and integrations using Python and n8n, significantly reducing manual operational load and optimizing business efficiency.
Innovation: Led the technical lifecycle of innovation projects, from proof of concept (PoC) to production deployment, driving digital transformation initiatives.

Toledo Piza

Data Analyst

Nov 2024 – Feb 2025

Designed and maintained optimized ETL pipelines for scalable data processing.
Leveraged T-SQL to manipulate and analyze large-scale datasets.
Built and validated dashboards in Power BI to generate business insights.
Developed automated solutions and fullstack web applications using Python and Node.js.
Solved complex technical issues, improving efficiency in data projects.
Collaborated with technical and business teams to deliver projects within scope and deadlines.
Created strategic KPIs to support data-driven decision-making.
Ensured data quality, consistency, and reliability across internal processes.

Toledo Piza

Data Assistant

Jul 2023 – Oct 2024

Designed and maintained ETL pipelines ensuring data integrity and reliability.
Worked with T-SQL on large-scale datasets for analysis and query optimization.
Developed dashboards and KPIs in Power BI to support decision-making.
Implemented data automations and integrations using Python and Node.js.
Handled complex technical problem-solving and delivered data-driven projects.

UNESP – São Paulo State University

Teaching Assistant

Aug 2021 – Jul 2023

Worked as a Teaching Assistant delivering practical programming classes for the Computational Numerical Calculus course, using Python and MATLAB to implement numerical methods such as solving linear systems, interpolation, numerical integration, and iterative methods. Supported students in algorithm development, code structuring, and result analysis, as well as assisting with exercises and practical projects, clarifying technical questions and contributing to the evaluation of students' performance.

Projects

Personal

Personal portfolio

Personal portfolio showcasing my journey as a Systems Analyst and Fullstack Developer. Built with Next.js 15, Tailwind CSS 4, and Supabase, it features dynamic project and experience management, an integrated technical blog, and native PT/EN multilingual support, all wrapped in a responsive, high-performance interface.

Supabase
Framer Motion
Tailwind CSS
React
Next.js
TypeScript

Education

UNESP – São Paulo State University

BSc in Computer Science

Jan 2017 – Dec 2021

Presidente Prudente, Brazil

UNESP – São Paulo State University

Graduate Coursework in Computer Science (incomplete)

Feb 2022 – Feb 2024

Focus: Neural Networks & Numerical Methods

Certifications

RAG Architectures with LLMs
Alura · Jan 2026
View credential
LangChain: Advanced RAG Techniques
Alura · Jan 2026
View credential
.NET: Persisting Data with Entity Framework Core
Alura · Jan 2025
View credential
Neural Networks: Deep Learning with PyTorch
Alura · Jan 2024
View credential
Training a Neural Network: Deep Learning with PyTorch
Alura · Jan 2024
View credential
Machine Learning: Classification with Scikit-learn
Alura · Jan 2024
View credential
Data Science: Exploring and Analyzing Data
Alura · Jan 2024
View credential
Data Science: Analysis and Visualization
Alura · Jan 2024
View credential

Get in touch

The fastest way to reach me:

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