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Portrait of Valter da Silva
Valter

Hi, I'm

Valterda Silva

Software Developer

Core technologies: Java, Spring, API, SQL, Docker

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01About me

I build software that turns real problems into digital products.

I'm a Software Engineering student at Unilins, in the final term of my degree. My path covers both development and technical support: I've built web applications and system integrations, worked with databases, and handled L2 support and infrastructure.

My main focus is backend/fullstack development — Java, Spring Boot,NodeJS, Typescript, APIs, databases and software architecture — always thinking about the product being built, not just the code.

I also work with and study QA, automation and artificial intelligence. Coming from support gave me a practical view of what happens to software after deployment: incidents, root causes and stability.

Education
Software Engineering
10th semester · final stage of the degree
Focus
Backend with Java and Spring Boot
Based in
Lins, São Paulo, Brazil

02Stack

Tools I build with

Each technology shows where it was used: at work, in projects or in studies.

  • Professional
  • Projects
  • Studies

Backend

  • Java(Professional, Projects, Studies)
  • Spring Boot(Professional, Projects, Studies)
  • Spring Security(Professional, Projects)
  • Spring Data JPA(Professional, Projects)
  • Node.js(Professional, Projects, Studies)
  • Express(Projects, Studies)
  • REST APIs(Professional, Projects, Studies)

Frontend

  • React(Professional, Projects, Studies)
  • JavaScript(Professional, Projects, Studies)
  • TypeScript(Professional, Projects)
  • Next.js(Professional, Projects)
  • HTML(Professional, Projects, Studies)
  • CSS(Professional, Projects, Studies)

Database

  • PostgreSQL(Professional, Projects, Studies)
  • MySQL(Professional, Projects)
  • SQL Server(Professional)
  • SQL(Professional, Projects, Studies)
  • Flyway(Projects)

DevOps / Infra

  • Docker(Projects)
  • Docker Compose(Projects)
  • Git(Professional, Projects)
  • GitHub(Professional, Projects)
  • Testcontainers(Projects)
  • AWS(Studies)

Automation / AI

  • n8n(Professional)
  • AI integrations(Projects)

Support & Operations

  • IT Support(Professional)
  • Infrastructure(Professional)
  • Troubleshooting(Professional)
  • Incident Management(Professional)
  • Root Cause Analysis(Professional)

Other

  • Python(Studies)
  • PHP(Projects)
  • Unity(Projects)

03Experience

  1. January 2026 — June 2026 · Support and infrastructure

    Solutis Tecnologias

    Customer Support Analyst II · Client: SABESP

    Specialized second-level (L2) technical support for SABESP, focused on incident resolution, IT infrastructure and system stability.

    • Handled and resolved technical incidents as specialized second-level support.
    • Investigated the root cause of reported issues.
    • Supported IT assets and network infrastructure.
    • Followed tickets end to end within the agreed SLAs.

    IT Support / Infrastructure / Troubleshooting / Incident Management / Root Cause Analysis

  2. September 2025 — November 2025 · Development

    Linx

    Junior Software Developer

    Built web solutions for dental clinics, covering scheduling, procedures and clinical records.

    • Developed and maintained web features for dental clinics.
    • Worked on scheduling, procedure and medical record flows.
    • Integrated and automated workflows with n8n.
    • Built React interfaces backed by SQL Server.

    Java / Spring / NodeJS / Typescript / SQL Server / n8n

04Work

Selected projects

01

Orça Aí

In development

Multi-tenant SaaS for estimates and proposals, starting with construction and renovation companies. Spring Boot backend with per-company data isolation and session-based authentication.

Java 25 / Spring Boot 4 / Spring Security / Spring Session JDBC / Spring Data JPA / PostgreSQL / Flyway / Testcontainers / Next.js / TypeScript / Vitest / Docker Compose

DetailsGitHub

02

EiTanol

In development

Fuel price comparison platform by region, designed to answer where it actually pays to fill up. Built in stages, with architecture decisions recorded as ADRs.

Java 25 / Spring Boot 4 / PostgreSQL / PostGIS / Docker Compose / Next.js / TypeScript / Tailwind CSS / JUnit

DetailsGitHub

03

Jurimetria AI

Working MVP · Academic project · 2026

Capstone project: a system for tracking court cases that uses AI to extract structured summaries from rulings and feed a jurimetrics dashboard.

Node.js / Express / PostgreSQL / React / Vite / Tailwind CSS / Zod / Anthropic API / Recharts

DetailsGitHub

04

Forest of the Fallen

3D game built in Unity, with combat systems, AI-driven enemies, player controllers and animations.

Unity

All projects

View all repositories

05Education

Software Engineering

Unilins — Centro Universitário de Lins

10th semester · final stage of the degree

Lins, São Paulo, Brazil

Courses

  • Full-Stack Web Development Bootcamp

    Instructor: Dr. Angela Yu

    React / Node.js / Express.js / PostgreSQL / Web Development / Software Engineering fundamentals

  • Java: do iniciante ao profissional

    Instructor: Leonardo Moura

    Java / Spring Boot / CRUD / Database Applications / Backend Development

06Contact

Let's talk.

Open to software development opportunities, especially backend.

contato@valtersilva.dev.br