Software Engineer · Backend

I build backends and teach how they work.

Backend software engineer in fintech, working with Kotlin, Java and C#. Focused on software architecture, scalability and distributed systems — APIs and services that can grow without losing their simplicity.

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Helena.kt

data class Engineer(
  val name = "Helena Strada",
  val focus = "backend",
  val stack = listOf(
    "Kotlin", "Java", "C#"
  ),
  val teaches = true,
)

// foco, persistência e consistência

Build

APIs, integrations and services in fintech. Interested in architecture, clean code and systems that are easy to maintain.

Teach

Instructor at SENAI, bootcamp tech lead at {reprograma} and author of series on databases and backend.

Learn

Books, reading code and the habit of turning questions into posts. Focus, persistence and consistency.

01 — Journey

A career between code and the classroom.

2024 — 2025
Software Engineer
Stone
Engineering
2020 — 2024
Software Engineer
Creditas
Engineering
2020 — 2021
Content Creator
Escola SENAI de Informática
Teaching
2020
Bootcamp Tech Lead
{reprograma}
Teaching
2017 — 2020
Training Instructor III
Escola SENAI de Informática
Teaching
2016 — 2018
BackEnd/FrontEnd Developer
MesclaLab
Engineering

02 — Writing

Notes on backend, data and architecture.

Step-by-step posts (in Portuguese) about what I study and build day to day.

Elsewhere

03 — Stack

Everyday tools.

Backend

Kotlin
Java
Spring
C#
.NET
EF Core
Hibernate
REST
GraphQL

Data

SQL Server
MySQL
Redis
Modelagem de dados
Docker

Practices

Clean Architecture
Design Patterns
CQRS
Microservices
CI/CD
GitHub Actions

Frontend & mobile

TypeScript
React
Next.js
React Native
Jest

Education

Graduate
Java Application Development — SOA and IoT
FIAP · 2016–2017
Undergraduate
Information Systems
PUC-SP · 2012–2016
Technical
Computer Technician
SENAC · 2010–2012