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Full-Stack & Back-End Developer

ANGELO
SANTANA

Java · Spring · Node.js · React · AWS

Software developer focused on performance, scalability and application architecture. I turn robust technologies into high-impact solutions for the user and the business.

View projectsContact
4+ years codingAPIs & AutomationDB Optimization3D · React Three Fiber
SÃO PAULO · BR

Main quest

I work in technology because I believe in the power of innovation to transform realities and give people their time back. More than being passionate about new frameworks, I'm driven by the impact code has at the edge: whether automating a process to free a team's creative potential, or building platforms that connect people to new resources.

Quest log · objectives

  • Give time back: finance tasks from 2h to 15min (−87%)
  • Remove bottlenecks: SQL queries up to 50% faster
  • Connect people to resources: Vale Reciclar platform
  • Next objective: your project
V.01

Time given back

Automate the repetitive to free teams' creative potential.

V.02

Impact at the edge

Measure code by the effect it has on the people who use it.

V.03

Innovation that transforms

Build platforms that connect people to new resources.

About me

I build from the database to the interface — obsessed with performance and systems that scale.

I work across Node.js and Java ecosystems, with a strong foundation in database optimization and process automation. I've cut processing times by up to 50% and built bots that speed up financial routines by over 80%. Graduated in Systems Analysis & Development at FIAP and currently studying Computer Engineering at Univesp.

Location
São Paulo, Brazil
Current role
Software Developer @ NewCAD
Focus
Back-End · Full-Stack
Languages
Portuguese · English (C1)
Availability
Open to opportunities
50%
Reduction in SQL query processing time
87%
Automation of critical financial tasks with Selenium
2h→15m
Manual routines turned into automated processes

Experience

  1. Software Developer

    MAR 2026 — PRESENT
    NewCAD — Poá, SP
    • End-to-end typing with tRPC, removing endpoint documentation and speeding up maintenance of the desktop app (Electron + React).
    • Migrated the physics engine to Rapier, fixing tunneling and raising the realism of 3D collisions in React Three Fiber.
    • 3D model migration pipelines for onboarding users coming from legacy interior-design systems.

  2. Systems Analyst / Full-Stack

    FEB 2025 — MAR 2026
    Nulog — Itaquaquecetuba, SP
    • Reduced SQL query time by up to 50% and resolved chronic bottlenecks (N+1) through legacy refactoring.
    • Selenium automation bots for the finance team: critical tasks from 2h to 15min (−87%).
    • Robust RESTful APIs in Java + Spring Boot to automate logistics and integrate internal systems.

  3. Full-Stack Web Developer

    AUG 2024 — FEB 2025
    Ebravo Consultoria — Arujá, SP
    • Scalable web systems with direct impact on the Arujá City Hall and local population.
    • Built the social platform "Vale Reciclar" — exchanging recyclables for the "Vale Verde" currency.
    • APIs in Node.js/Express, MySQL integration and Docker for reliable development environments.

  4. Software Development Intern

    APR 2024 — AUG 2024
    Ebravo Consultoria — Arujá, SP
    • Responsive, interactive interfaces in React with efficient MySQL integration.
    • Unit testing and debugging to ensure application stability before deploy.

Projects

  • FEATURED2026IN PROGRESS

    Vezta

    A gamified personal-finance platform: income, expenses, saving goals and spending limits that earn points and levels — on your own or together, in "parties" shared with family and friends. Microservice architecture with a Spring Boot core API (JWT, Flyway, OpenAPI and 76% test coverage), an Expo/React Native mobile app with a retro-arcade look, a worker that tracks B3 stock quotes and publishes events to RabbitMQ, and a Telegram bot for logging transactions without opening the app.

    • Java 17
    • Spring Boot
    • PostgreSQL
    • Flyway
    • RabbitMQ
    • React Native
    • Expo
    • Docker

    Repositories are still private — the link lands here as soon as the first release ships.

    Vezta — screenshot
  • PRODUCT2026

    DeuQuanto

    28 online calculators — net salary, severance pay, compound interest, BMI, date math — on a fully static site: no backend, no database, everything computed in the browser. Each calculator is a single TypeScript file, and that one object alone yields the prerendered route, the SEO (metadata, JSON-LD, its own OG image), the sitemap entry and the internal links. Results recompute on every keystroke: there is no "Calculate" button anywhere.

    • Next.js 16
    • React 19
    • TypeScript
    • SSG
    • Technical SEO
    View project — DeuQuanto

    Private repository, domain not published yet.

    DeuQuanto — screenshot

Stack

  • Backend

    Languages

    • Java
    • C#
    • TypeScript

    Frameworks

    • Spring Boot
    • .NET
    • Entity Framework
    • Node.js
    • Express
    • tRPC
    • Prisma

  • Frontend & UI

    Languages

    • TypeScript

    Frameworks

    • React
    • Electron
    • React Three Fiber
    • TanStack Query

  • Databases

    • PostgreSQL
    • MySQL
    • OracleDB
    • MongoDB
    • SQLite

  • DevOps & Cloud

    • Docker
    • Git
    • CI/CD
    • Azure
    • AWS

Certifications

  • Azure Developer Associate

    MICROSOFT · AZ-204 · 2026

  • Systems Analysis & Web Prototyping

    PROFESSIONAL QUALIFICATION

  • Mobile Application Development

    PROFESSIONAL QUALIFICATION

  • Web 2.0 Analysis & Design

    PROFESSIONAL QUALIFICATION

  • Tech Strategy & Innovation — AI & IoT

    PROFESSIONAL QUALIFICATION

Education

  1. Computer Engineering

    2025 — 2030

    Univesp

    In progress

  2. Systems Analysis & Development

    2023 — 2024

    FIAP

    Completed · CST

  3. Electronics Technician

    2020 — 2022

    Etec Presidente Vargas

    Completed

Let's build something

Let's talk

Open to new challenges and high-impact projects. Pick whichever channel you prefer — I reply fast.

Send emailLinkedInWhatsApp

angelo.gs.santana@outlook.com · +55 (11) 97874-0306

Type /help to list commands.