# Antonio Leonardo Gonçalves de Moraes

Antonio Leonardo Gonçalves de Moraes is a remote worker on Himalayas, Desenvolvedor Freelancer at Zelium, based in Brazil.

Source: https://himalayas.app/@antonioleonardogonal

```text
Backend software engineer at Alloc IT Solutions who cut ERP checkout search response time by about 40%.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Brazil |
| Authorized to work in | Brazil |
| Salary expectations | 82k+ BRL |
| Job categories | Backend Java Developer, Full Stack Developer, Backend Engineer |
| Skills | Java, Spring Boot, REST APIs, Microservices, OAuth, JWT, Spring Security, PostgreSQL, SQL Server, SAP Hana, Angular, TypeScript, Kotlin, Python, Django |
| LinkedIn | https://linkedin.com/in/leonardomoraesdev |
| GitHub | https://github.com/leomorae-s |

## About

```text
At Alloc IT Solutions, I cut product search response time in an ERP checkout module by about 40% by removing redundant requests and duplicated code. I also replaced SAP B1IF with a Spring Boot REST microservice that connected PostgreSQL, SAP HANA, and SQL Server, eliminating recurring synchronization failures in two weeks.

At Alloc IT Solutions, I modernized authentication with OAuth 2.0 and JWT, and migrated critical functionality from Java Swing to Spring Boot and Angular. As a freelancer at Zelium, I structured the Portal do Parceiro with a multi-tenant PostgreSQL database and integrations isolated behind the backend; at NexTI-Unifap, I led four interns on a Python/Django project that had been paused for a year and helped deliver it to the client.
```

## Experience

### Desenvolvedor Freelancer (current)

Zelium. Jan 2026 - Present

```text
Estruturei do zero o Portal do Parceiro com Spring Boot, PostgreSQL, Flyway e Docker, com banco multi-tenant, UUIDs, idempotência e integrações com Serpro e gateway de pagamento. Liderei o resgate técnico de uma plataforma de prospecção de leads, conduzindo reuniões estratégicas e viabilizando o MVP funcional em 1 mês.
```

Skills: Spring-Boot, PostgreSQL, Flyway, Docker, Multi-Tenant-Environments, UUID, Idempotency, Serpro, Payment-Gateways, Stakeholder-Management

### Engenheiro de Software Full-Stack (current)

Alloc IT Solutions. Jun 2025 - Present

```text
Reduzi em cerca de 40% o tempo de resposta das buscas de produtos do módulo de caixa de um ERP, ao diagnosticar e eliminar requisições redundantes e código duplicado. Investiguei a causa raiz de falhas recorrentes de sincronização e projetei microsserviço REST em Spring Boot, integrando PostgreSQL local a SAP HANA e SQL Server e eliminando as falhas em 2 semanas.
```

Skills: Java, Spring-Boot, Angular, PostgreSQL, SAP-Hana, SQL-Server, Spring-Security, OAuth, JWT, Docker, Kotlin, M-SiTef, Git, Git-Flow

### Estagiário de Engenharia de Software

NexTI-Unifap. Jun 2024 - Jun 2025

```text
Liderei tecnicamente 4 estagiários em projeto crítico em Python/Django, revertendo 1 ano de paralisação e garantindo a entrega ao cliente. Ministrei workshops de Docker e TDD.
```

Skills: Python, Django, Docker, Test-Driven-Development, Leadership

## Education

### Centro Universitário Paraíso (UniFap)

Tecnólogo, Análise e Desenvolvimento de Sistemas. Grade: 8.45

Activities and societies: 2 participações no ICPC; 2º lugar duas vezes seguidas na maratona de programação da faculdade.

```text
Completed a Tecnólogo in Análise e Desenvolvimento de Sistemas with a GPA of 8.45, participating twice in the ICPC and placing second twice in the college programming marathon.
```

## Tech stack

- Docker Compose
- Sass
- Flyway
- PostgreSQL
- MongoDB
- Django
- Spring Boot
- Redis
- Python
- HTML5
- Java
- Kotlin
- Go
- RabbitMQ
- Grafana
- Prometheus
- Hibernate
- Spring Security
- TypeScript
- JUnit
- Mockito
- Keycloak
- Git
- Docker
- NGINX
- SQL
- REST APIs
- Angular
- CSS3

To contact Antonio Leonardo, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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