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Marcelo Araujo

@marceloaraujo

Message

I lead Java backend architecture for high-volume WhatsApp platforms, chatbots, and enterprise integrations.

Brazil

Message

What I'm looking for

I'm looking to lead scalable backend, microservices, and conversational-platform work, with strong engineering standards for testing, CI/CD, observability, and maintainability.

At Hitss Brasil, I lead backend architecture for Claro Empresas WhatsApp Business Platform solutions across large-scale digital channels.

I design FSM-based chatbot flows and Java/Spring Boot microservices using Redis, AWS SQS/SNS, Docker, and REST APIs. I integrate conversational journeys with CRM, sales, and customer-service platforms to improve automation and handoff reliability.

I define technical standards, testing strategy, and CI/CD practices with JUnit, Mockito, and WireMock, while supporting backend teams on scalability, observability, and maintainability.

Over 18+ years, I've delivered enterprise systems, cloud solutions, legacy modernization, and full-stack products for Hitss Brasil, Whistic, Qintess, QAT Global, and Ibrowse.

Experience

Work history, roles, and key accomplishments

Current

Technical Lead

Current

Hitss Brasil

Apr 2025 - Present (1 year 6 months)

Lead backend architecture for enterprise WhatsApp Business Platform solutions serving Claro Empresas digital channels.
Designed FSM-based chatbot flows and microservices using Java, Spring Boot, Redis, AWS SQS/SNS and REST APIs.
Integrated conversational journeys with CRM, sales and customer-service platforms, improving automation and handoff reliability.
Defined technical standards, testing st

Spring Boot Java Figma Natural Language Processing SpaCy Python

Senior Software Engineer

Hitss Brasil

Jan 2024 - Apr 2025 (1 year 3 months)

Senior Software Engineer at Hitss Brasil.

Software Engineer

Whistic

Aug 2022 - Nov 2023 (1 year 3 months)

Delivered full-stack development for the third-party security risk assessment platform.

- Wrote clean, maintainable, and efficient code while adhering to best coding practices
- Wrote unit and integration tests
- Implemented cloud computing solutions to simplify data backup, disaster recovery, and business continuity

Spring Boot, Spring Data, JUnit, Mockito, Angular, Typescript, AWS, DevOps, D

Software Development Angular Java Docker TypeScript Critical Thinking Spring Boot Cloud Computing Maven

Senior System Analyst

Hitss Brasil

Dec 2021 - Aug 2022 (8 months)

WhatsApp Bot Development - Microservices oriented. Technologies include: Spring Boot, Cucumber, JUnit, Spring Data, Maven, Mockito and Wiremock.

Arquitetura, desenvolvimento e Integração de microsserviços, Whatsapp Chatbots - Spring Boot, Spring, Mockito, JUnit, Maven, Redis, Spring Data, Restful APIs, WireMock

Critical Thinking

Senior Software Engineer

Qintess

Apr 2021 - Nov 2021 (7 months)

Diretoria de Tecnologia da Informação e Inovação - Polícia Federal (sustentação, manutenção e desenvolvimento - JSF, JWS)

Critical Thinking

Senior Information Technology Analyst

QAT Global

Oct 2020 - Feb 2021 (4 months)

Manutenção e Evolutivas - Spring MVC, Spring Boot, Mockito, JUnit, Java

Senior Full Stack Developer

Ibrowse Consultoria e Informática

Nov 2017 - Oct 2020 (2 years 11 months)

Developed full stack solutions using AngularJS, Spring MVC, Spring Boot, Java, JCompany, and Angular 2+, including portals for solicitação de alvarás hidrossanitário, restrição urbanística, and construção civil for Prefeitura Municipal de Uberlândia - MG.

Senior Full Stack Developer (C#, Java, Spring Boot, Spring MVC, PHP 5, PHP 4, An

Ibrowse Consultoria e Informática

Nov 2017 - Oct 2020 (2 years 11 months)

Desenvolvimento Full Stack (AngularJS, Spring MVC, Spring Boot, Java, JCompany, Angular +2), portais de solicitação de alvarás hidrossanitário, restrição urbanística e construção civil (Prefeitura Municipal de Uberlândia - MG)