Leonardo Gonçalves de Souza

Leonardo Gonçalves de Souza  new_releases

About

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Senior Backend Engineer
Sao Paulo, Brazil
Contact Leonardo regarding: 
work
Full-time jobs
Starting at USD96k/year
Flexible work
Starting at USD50/hour

Timeline

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Résumé

Jobs verified_user 0% verified
  • Sword Health
    Senior Backend Engineer public Remote experience
    Sword Health
    Nov 2024 - Current (1 year 6 months)
    - Designed and implemented core platform features for a distributed, high-traffic health tech platform using Go and Node.js, leveraging Claude Code (agentic AI) to accelerate development velocity by 30% while maintaining a rigorous Test-Driven Development (TDD) workflow and ensuring 90%+ test coverage. - Optimized gRPC APIs and MySQL queries across microservices, reducing latency and improving observability through structured logging and monitoring for high-traffic endpoints. - Promoted best practices in backend development, contributing to project planning, code reviews, CI/CD pipelines and ongoing maintenance.
  • S
    Software Engineer public Remote experience
    Apr 2022 - Nov 2024 (2 years 8 months)
    - Designed and implemented gRPC services in Go for an in-house CRM platform serving distributed teams, achieving a 20% performance improvement by optimizing database queries with efficient indexing and caching, while ensuring scalability and maintainability through modular design and Go's concurrency patterns. - Integrated the Go-based backend system with a legacy SOAP-based platform using the gowsdl library to generate Go code from WSDL services, enabling seamless data exchange and operational continuity - Utilized cloud-native GCP services (Cloud Run, Cloud Spanner, Pub/Sub) within a Go environment to enhance application reliability and scalability, deploying containerized services on Cloud Run and leveraging Pub/Sub for asynchronous ev
  • Clevertech
    Backend Engineer public Remote experience
    Clevertech
    Nov 2021 - Feb 2022 (4 months)
    Responsible for developing graphQL APIs using Node.js/Typescript
  • GFT Technologies SE
    Software Engineer
    GFT Technologies SE
    Oct 2016 - Nov 2021 (5 years 2 months)
    Development of microservices using CQRS pattern. These microservices were built with Java 8, Spring Boot, Apache Kafka, Cassandra and Redis. Deployment using Azure platform. • Development of applications using Node.js, Angular.js and MongoDB. • Design of API's using RAML and Swagger and development of these API's using Node.js
  • Porto Seguros
    Web Developer
    Porto Seguros
    Jul 2015 - May 2016 (11 months)
    Development of a chat system that was one of the channels for the client to make an insurance quote. This chat system was built using Node.js, Laravel framework (PHP), and MongoDB.
  • E
    Software Developer
    Editora Moderna
    Feb 2014 - Jul 2015 (1 year 6 months)
    Development of a platform to manage schools, clients (parents), and students and enable sales of textbooks. This platform was built using PHP with Yii Framework and MySQL Database. Integration with the financial manager (SAP) to generate invoices. Deployment using AWS platform.
  • W51 Informática e Marketing
    Software Developer
    W51 Informática e Marketing
    Oct 2013 - Feb 2014 (5 months)
    • Development of e-commerce using Magento • Server configuration for deployment • Development of customized websites using WordPress.
  • N
    PHP Developer
    NA5 Consultoria
    Mar 2013 - Oct 2013 (8 months)
    • Development of e-commerce using Magento • Server configuration for deployment. • Development of customized websites using WordPress.
  • T
    Software Developer
    Tracersoft Tecnologia
    May 2009 - Feb 2013 (3 years 10 months)
    • Development of an invoice issuing system. • Development of a system for monitoring city indicators. • Development of a system to classify less polluting companies. • Development using PHP with Yii framework. Using of MySQL and PostgreSQL databases
  • Cuca Propaganda
    PHP Developer
    Cuca Propaganda
    Apr 2008 - May 2009 (1 year 2 months)
    • Development of customized websites using WordPress. • Development of e-commerce using Magento
  • I
    Software Developer
    Infoconsult Consultoria e Informática
    Feb 2006 - Jun 2007 (1 year 5 months)
    Development new feature for the system marketed by the company to provide advice on foreign trade
Education verified_user 0% verified
  • Free Code Camp
    Full Stack Web Development
    Free Code Camp
    Feb 2016 - Feb 2017 (1 year 1 month)
Projects (professional or personal) verified_user 0% verified
  • V
    Volunteer Schedule System public Remote experience
    Jan 2026 - Current (4 months)
    - Designed and built a full-stack volunteer scheduling system from scratch for a local church congregation, using Go (Fiber) for the backend REST API and Next.js 16 for the frontend, deployed as cloud-native services on Google Cloud Run with Cloud SQL and provisioned via Terraform. - Implemented a constraint-based auto-scheduling algorithm that automatically assigns 190+ volunteers to service positions, respecting role requirements, availability restrictions, partner preferences, and fair workload distribution across a distributed system of events and roles. - Developed the entire project using an agentic AI workflow with Claude Code, accelerating architecture decisions, code generation and testing while maintaining Test-Driven Developmen