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Lucas Lamounier

@lucaslamounier

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Senior Java Backend Engineer at Turing, building goHenry/Acorns Early’s mobile BFF and cloud microservices.

Brazil

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At Turing, I build Java and Spring Boot services for goHenry/Acorns Early, including a Backend-for-Frontend that exposes REST endpoints to the mobile app and translates requests into GraphQL queries.

At Ambev Tech, I served as technical lead of a development squad and helped modernize an invoice-management platform from a monolith toward cloud-native, multi-tenant microservices on Azure. I also redesigned core workflows around event-driven architecture.

At HST, I built secure payment-tokenization services in a PCI-regulated environment and maintained Java EJB systems. Earlier, I developed clinic-management features and APIs at B2ML Sistemas and supported legacy Java systems at Tata Consultancy Services.

Experience

Work history, roles, and key accomplishments

Current

Senior Java Developer

Current

Turing

Mar 2025 - Present (1 year 8 months)

Designed and built a Backend-for-Frontend (BFF) for a money app for kids and teens, translating REST requests into GraphQL queries. Maintained Java 21 / Spring Boot 3.x services with OpenFeign and RabbitMQ, deployed on GCP with Kubernetes, and monitored production with Datadog.

Java Spring Boot Spring Cloud OpenFeign RabbitMQ GraphQL REST GCP Kubernetes Datadog Test Containers CI CD

Senior Java Developer

Ambev Tech

Jun 2022 - Feb 2025 (2 years 8 months)

Served as technical lead for an invoice-management platform, mentoring engineers and guiding technical decisions. Drove modernization from a monolith to a cloud-native microservices architecture on Azure, implementing event-driven workflows and CI/CD pipelines.

Java Spring Boot Microservices Event Driven Architecture Project Reactor Azure Kubernetes Redis Azure Blob Storage SQL Server MongoDB CI CD Hexagonal Architecture

Mid-Level Java Developer

HST

May 2021 - May 2022 (1 year)

Built secure Spring Boot services for payment tokenization in a PCI-regulated environment. Maintained mission-critical Java EJB systems and designed microservices with REST APIs documented in OpenAPI.

Java Spring Boot EJB REST OpenAPI Jenkins Docker WildFly PostgreSQL MongoDB RabbitMQ

Support Analyst

Tata Consultancy Services

Feb 2020 - Apr 2021 (1 year 2 months)

Worked directly with end users to identify recurring issues, gather requirements, and improve legacy Java systems and Oracle Forms & Reports applications.

Java Oracle Forms Oracle Reports Requirements Gathering