Emanuel Lázaro - Full-Stack Software Engineer, Data Scientist & AI/ML Engineer

Hi! I'm Emanuel Lázaro.

A |

"Building scalable systems with clean interfaces, robust backends, and measurable outcomes."

📍 Mucambo, Brazil 🇧🇷

About Me

I'm a Full-Stack Engineer, Data Scientist & ML Engineer, and a double-degree student in Software Engineering & Computer Science (2025–2029). I build across the entire stack, from pixel-precise frontends to distributed backends and trained neural networks.

I operate across multiple ecosystems: the TypeScript ecosystem (React, Next.js, Node.js, NestJS) for modern web, the Java ecosystem (Spring Boot, Spring Cloud, JPA/Hibernate) for enterprise backends, and Python and Go for data workflows and automation. Outside of my primary professional focus, I'm an avid hobbyist in low-level systems and game engine development using C, C++, C#, and Rust.

On the AI/ML side, I train and fine-tune Deep Learning models using PyTorch and TensorFlow, compete on Kaggle, and publish models on Hugging Face, with a focus on Computer Vision, NLP, and applied data workflows.

Everything I build is shaped by Clean Architecture, Domain-Driven Design, and SOLID principles. I care about code that is testable, maintainable, and built to last, not just code that works today.

I'm actively looking for Internship or Junior Engineering roles where I can contribute to real systems, learn from strong teams, and grow as an engineer.

Full-Stack Systems

React, Next.js, Node.js, and NestJS with production-grade ergonomics.

Java / Spring Backend

Spring Boot, Spring Cloud, JPA/Hibernate, Spring Security, and Maven/Gradle.

Cloud & DevOps

Docker, Kubernetes, CI/CD pipelines, and AWS cloud delivery.

AI/ML Integration

Deep Learning, Kaggle experimentation, and Python data workflows.

Architecture & Design

Clean Architecture, Domain-Driven Design (DDD), and SOLID principles.

Backend Engineering

REST/GraphQL/gRPC APIs, microservices patterns, and event-driven systems with Kafka & RabbitMQ.

Systems & Low-Level

Passionate hobby: C, C++, C#, and Rust for exploring game engines and concurrency.

Data Strategy

Relational and NoSQL modeling, query optimization, and caching strategies.

Professional Experience

Full-Stack Developer

Spaço Bellas

Sep 2025 - Nov 2025
São Paulo, Brazil (Remote)
Freelance

Spearheaded the end-to-end development of two core digital platforms for a luxury Beauty & Wellness Spa, driving digital transformation for both customer acquisition and internal business operations.

Key Responsibilities & Tech:

  • Customer-Facing Web Platform (Spaço Bellas): Engineered a high-performance, mobile-first web platform to drive conversions using React 18, TypeScript, and Vite. Built specialized landing pages for B2C services (Spa Days, VIP Memberships) and B2B solutions (Corporate Wellness) featuring seamless WhatsApp integration and smooth UI animations with Framer Motion. Implemented a scalable Feature-Based Architecture supported by Drizzle ORM, Express.js, and Supabase (PostgreSQL).
  • CRM & Management Solution (Bella Gestor): Architected a comprehensive internal CRM using Next.js 15 (App Router) and React 19 to streamline salon operations, appointments, and client relationships. Developed advanced scheduling capabilities with full Google Calendar API synchronization and built a robust Role-Based Access Control (RBAC) system for Admins, Professionals, and Secretaries. Integrated financial tracking, sales workflows, and InfinitePay payment processing, visualizing data through real-time Recharts analytics dashboards.
  • Tech Stack: React (18/19), Next.js 15, TypeScript, Tailwind CSS, Vite, Supabase (PostgreSQL), Drizzle ORM, Framer Motion, shadcn/ui, React Hook Form, Zod.

Machine Learning & Data Science Competitor

Kaggle

January 2026 - Present
Remote / Global
Competition & Research

Participating in global data science competitions to benchmark models, refine feature engineering, and stress-test applied ML workflows.

Key Responsibilities & Tech:

  • Training Deep Learning models using PyTorch and TensorFlow for Computer Vision and NLP tasks
  • Implementing advanced feature engineering and large-scale data processing pipelines with Pandas and NumPy
  • Applying mathematical optimization and regularization techniques to improve model generalization
  • Fine-tuning and deploying models from Hugging Face Hub and studying SOTA architectures and modern training techniques

Full-Stack Software Engineer

Freelance / Self-Employed

Jan 2022 - Present
Mucambo, Brazil (Remote)
Freelance

Delivering production-grade full-stack solutions with a focus on performance, security, and maintainability using Clean Architecture and Domain-Driven Design.

Key Responsibilities & Tech:

  • Architecting RESTful, GraphQL, and gRPC APIs using Node.js (NestJS), Spring Boot (Java), and Go
  • Building enterprise Java backends with Spring Security (JWT/OAuth2), Spring Data JPA/Hibernate, and Spring Cloud microservices
  • Deploying containerized services to AWS and multi-cloud environments using Docker, Kubernetes, and Terraform
  • Building responsive frontend interfaces with React, Next.js, and Tailwind CSS
  • Implementing event-driven architectures using Apache Kafka and RabbitMQ for asynchronous workflows
  • Optimizing database performance for PostgreSQL, MySQL, and MongoDB including query indexing, caching with Redis, and Elasticsearch integration

Intern

Arte Gráfica

August 2024 - December 2024
Mucambo, Ceará, Brazil
Internship

Gained practical experience in visual communication and digital media production.

Key Responsibilities & Tech:

  • Developed skills in graphic design and visual communication
  • Collaborated on design projects and client deliverables
  • Applied technical knowledge in a professional team environment

Education & Certifications

A continuous journey combining academic rigor in Computer Science & Software Engineeringwith practical, professional certification in cloud technologies.

Academic Background

Technological Residency

Cloud Computing

Instituto iRede

Mar 2026 - Mar 2027
Brazil
In Progress

12-month Technological Residency Program in Cloud Computing (Capacita Brasil/MCTI). Intensive, hands-on program combining high-level technical training with practical immersion. Curriculum covers public/private/hybrid clouds, IaaS, PaaS, SaaS, AWS services, containers, and low-coupled application integration. Emphasizes real-world projects, DevOps practices, and scalable cloud solutions.

Bachelor's Degree

Computer Science

Uninter

Nov 2025 - Nov 2029
Brazil
In Progress

Focus on Algorithms, Data Structures, and Mathematical Foundations.

Bachelor's Degree

Software Engineering

Estácio

Jan 2025 - Jan 2029
Brazil
In Progress

Focus on System Design, Software Architecture, and Engineering Practices.

Professional Formation

Software Engineer

Escola DNC

Apr 2025 - Nov 2025
Remote
Completed

Intensive training in Full-Stack Development and Career Acceleration.

Integrated Technical Course

Systems Development

EEEP Professora Maria de Jesus Rodrigues Alves

Jan 2022 - Dec 2024
Ceará, Brazil
Completed

Foundation in programming logic, web development, and database management.

Certifications & Courses

AWS CloudFormation
AWS Lambda
Cloud-Native Architecture
React Development
HCIA-5G V2.0
5G Basics
Career Orientation Journey
Networking Academy Learn-A-Thon 2025
Oracle Cloud Infrastructure 2025 Certified AI Foundations Associate

Code Repositories

I organize my development work across specialized platforms. Explore my code, models, and datasets based on your area of interest.

GitHub

All Projects & Code

The central hub for all my code. Home to production-grade applications across Web, Cloud, and Data, as well as my passionate exploration into game engines and low-level systems (C, C++, C#, Rust).

TypeScriptJava / Spring BootPythonGoC/C++RustC#
GitLab

Open Source & Community

My dedicated space for external open-source contributions, community initiatives, and collaborative work outside of my personal portfolio.

Open SourceCommunityContributions
Hugging Face

AI & Machine Learning

The repository for my research into artificial intelligence. Includes trained models, datasets, and NLP experiments with PyTorch and TensorFlow.

PyTorchDeep LearningModels
Kaggle

Data Science & Competitions

My arena for benchmarking models and feature engineering. I participate in global competitions to stress-test applied ML workflows and data strategies.

PythonData AnalysisCompetitions

Technical Stack

My stacks span the TypeScript ecosystem (Node.js, React, Next.js, NestJS), the Java ecosystem (Spring Boot, Spring Cloud, JPA), and Python and Go for automation, data workflows, and concurrency-critical services.

Languages

📘TypeScript
JavaScript
Java
🐍Python
🐹Go
💾SQL

Java Ecosystem

🌿Spring Boot
🔒Spring Security
☁️Spring Cloud
🗄️Hibernate/JPA
📦Maven
🐘Gradle
🧪JUnit 5

Backend & APIs

🟢Node.js
🦁NestJS
🚂Express.js
FastAPI
🍸Go Gin
GraphQL
🔗gRPC
🐇RabbitMQ
📨Apache Kafka

Frontend Development

⚛️React
Next.js
🌊Tailwind CSS
🌐HTML5
🎨CSS3
Vite
🧊WebGL / Three.js

Cloud & DevOps

☁️AWS
🐳Docker
Kubernetes
⚙️GitHub Actions
🏗️Terraform
🟦Azure
🌈Google Cloud
Lambda
🔧CloudFormation
🌐Nginx

Databases & Caching

🐘PostgreSQL
🐬MySQL
🍃MongoDB
🔴Redis
🔍Elasticsearch

AI/ML & Data

🔥PyTorch
🧠TensorFlow
🤗Hugging Face
📊Scikit-learn
🐼Pandas
🔢NumPy
🏅Kaggle

Hobby: Systems & Low-Level

🔵C
⚙️C++
🟣C#
🦀Rust
WebGPU / WGSL

Let's Connect

I am actively pursuing Internship and Junior Engineering roles where I can apply modern web development, cloud-native delivery, and AI/ML to production contexts.

Whether you want to discuss Clean Architecture, Kaggle Competitions, or Full-Stack Systems, I'd love to hear from you.

Email

emanuellzr01@outlook.com

LinkedIn

Connect for opportunities

Kaggle

View my Notebooks

Hugging Face

Follow my AI/ML models

GitHub

Explore all my projects

GitLab

Open-source contributions