João Lima

Senior Java Software Engineer @ Platform Builders

About

I’m a Senior Back-end Software Engineer currently working at one of Brazil’s largest insurance companies, where I help modernize legacy systems and design scalable cloud-based solutions. My experience spans Java, Spring Boot, AWS (EKS, Lambda, S3, SQS, SNS, RDS, Elasticache, IAM, STS, Secrets Manager, CloudWatch), Docker, Kubernetes, Terraform, system design, monitoring and documentation, applying hexagonal architecture and microservices to ensure performance, maintainability, and system reliability during the migration process. I’m passionate about building reliable systems, mentoring developers, and contributing to teams that value clean architecture, performance, andinnovation.

Country

Brazil

City

São Paulo

Industry

Computer Software

Skill

Grafana, MuleSoft, Jenkins, Angular, C#, ASP.NET, Redis, Cache, Google Cloud Platform (GCP), Selenium, WebDriver Selenium, WebSockets, CQRS, Automação de testes, Jacoco, Pitest, Mockito, JUnit, Apache Kafka, RabbitMQ

Experience

Senior Java Software Engineer

Platform Builders

2026-5 - Present · 5 mos

São Paulo, SP

Software Engineer

Platform Builders

2025-7 - 2026-5 · 11 mos

São Paulo, SP

- Built scalable solutions using Java, Spring Boot, Node.js, AWS (EKS, Lambda, SNS, SQS, RDS, Elasticache, S3, IAM, STS, Secrets Manager, CloudWatch, Step Functions, EventBridge), Terraform, Docker, Kubernetes, Jenkins, Grafana, and MuleSoft; - Developed key features for the CRM retirement project, migrating critical functions and contributing to technical improvements; - Created system documentation to ensure stability during the transition from legacy systems

Mid-Level Software Engineer

Sumirê Perfumaria

2024-11 - 2025-7 · 9 mos

- Contributed to the development and maintenance of distributed systems using Java, JDBC, JSF, Richfaces and Oracle Database; - Implemented RESTful APIs and integrated the distributed systems with third-party services; - Supported other members of the development team; - Analyzed and improved the performance of Java applications

Software Engineer

Condfy

2023-8 - 2024-11 · 1 yr 4 mos

Bauru, São Paulo, Brazil

- Developed new features and provided maintenance for the web platform using Java Spring, JSF, Primefaces, and PostgreSQL; - Tested and reviewed the activities carried out by other team members; - Implemented RESTful APIs and integrated the web platform with third-party services; - Integrated electronic security equipment into the system, working with IoT; - Developed custom apps for clients, currently responsible for managing over 90 custom apps; - Increased the number of custom apps in the portfolio by over 90% in 2023.

Teaching Assistant

SoulCode Academy

2023-2 - 2023-5 · 4 mos

São Paulo, Brazil

- Attended a 100% scholarship full-stack development bootcamp focusing on React and Node.js, as well as relational and non-relational databases (Firebase, MongoDB, and MySQL); - Acted as a teaching assistant, helping other students, leading teams on projects, reviewing code, and acting as a DevOps team member.