Publication
Guide to Spring Boot REST API Error Handling
https://www.toptal.com/developers/java/spring-boot-rest-api-error-handling
Bruno is available for hire
Hire BrunoBruno Leite
Verified Expert in Engineering
Back-end Developer
Garopaba - State of Santa Catarina, Brazil
Toptal member since May 12, 2014
Bio
Bruno is an AI engineer who brings AI systems to production. As co-founder, CTO, and principal engineer of octoATHLETE, he's building a multi-agent LLM system with nine agents on Amazon Bedrock and OpenRouter that turns clinicians' voice notes and sports telemetry into decision support for professional sports teams. With 20 years of back-end and cloud architecture experience in Java, TypeScript, Python, and AWS, Bruno builds AI systems that are versioned, tenant-isolated, and cost-controlled.
Portfolio
octoATHLETE
Agile Software Development, Software Architecture, Lean Product Manager...
Gendo
Agile Software Development, Artificial Intelligence (AI), Node.js, React...
Aspire HR Software, LLC
Node.js, TypeScript, Amazon Web Services (AWS), Serverless, AWS Lambda...
Experience
- Java - 18 years
- Agile Software Development - 12 years
- Test-driven Development (TDD) - 10 years
- Cloud Computing - 10 years
- Amazon Web Services (AWS) - 7 years
- Solution Architecture - 6 years
- TypeScript - 5 years
- Node.js - 4 years
Preferred Environment
Java, Amazon Web Services (AWS), Serverless, TypeScript, Prisma, Agile Software Development, SaaS, Technical Leadership, Leadership Development
The most amazing...
...architecture I've designed was a multitenant SaaS app with SSO, external system integrations, and CI/CD with an automated serverless testing framework.
Work Experience
CTO and Co-founder
2023 - PRESENT
octoATHLETE
- Served as principal engineer and CTO, personally authoring around 1,550 of the platform's 2,800 commits (approximately 55%), spanning the agent layer, data lakehouse, API contracts, and AWS infrastructure of an AI athlete health-monitoring SaaS for professional sports teams.
- Built and shipped nine production LLM agents and four orchestrated workflows on Mastra, covering clinical voice-note extraction, longitudinal wellness synthesis, training-load analysis, a tool-calling readiness assistant, and a safety guardrail agent.
- Authored the UK GDPR pack for special‑category health data — DPIA, ROPA, transfer assessment, retention/erasure—reviewed with Club medical staff; remediated gaps in code—in‑region Bedrock routing, medical payloads out of logs, audited erasure.
- Kept authoritative scoring deterministic in code and used LLMs only for grounded narrative—schema-constrained generation via Bedrock Converse tool calling, validated with Zod, malformed output rejected, and retried against the failed contract.
- Built the evaluation stack: a golden-set harness over real clinical dictation scoring capture, accuracy, and false-positive rates independently, plus deterministically sampled LLM-as-judge scoring on 15% of live production traces.
- Ran quota-aware batch inference through a Dagster and Apache Iceberg lakehouse, fingerprinting prompt, model, and content hashes to cache extractions and invalidate them on semantic change, tuned against Bedrock token admission limits.
- Implemented the streaming chat layer (SSE over the AI SDK protocol) with prompt caching and per-step token accounting, cutting stream payload by around 99% and hardening it against client-forged tenant context.
- Deployed and operated the stack on AWS with SST and Pulumi—Mastra on ECS Fargate, Lambda, Aurora, DynamoDB, Trino—filtering sensitive data in the AI trace exporter, and led three engineers to a near-zero defect rate as architect and reviewer.
Technologies: Agile Software Development, Software Architecture, Lean Product Manager, Lean Product Development, CTO, Agentic AI, Artificial Intelligence (AI), Python, Technical Writing, Harness, Large Language Models (LLMs), Mastra, Claude Code, AI-assisted Development, AI-generated Code, AI Integration, API Integration, Data Modeling, OpenAI API, AI Architecture, AI Engineering, Workflow Automation & System Integration, Tailwind CSS, OpenRouter, Anthropic, Prompt Engineering, Claude, Zod, SvelteKit, Playwright, Dagster, Apache Iceberg, Trino, Amazon Aurora, AWS Fargate, GDPR, AI Agents, AI Agent Orchestration, LLM Agents, Model Context Protocol (MCP), Amazon Simple Queue Service (SQS), Amazon RDS, Amazon Virtual Private Cloud (VPC), Docker, GitHub, Continuous Integration (CI), OpenAI, Next.js, Database Architecture, Databases, Systems Design, Leadership, Agentic Coding, Agentic Workflow Design, Claude API, Cloud Infrastructure, Data Extraction, System Architecture, Technical Leadership, Pipelines, Role-based Access Control (RBAC), User Roles, Workflows, Reporting, User Experience (UX), Reports, User Interface (UI), Security, Dashboards, Data Visualization, ChatGPT, Product Owner, Agentic Frameworks, AI Tools, Clean Code, Vercel, Data Pipelines, Data Architecture, ELT, Reliability, Scalability, Performance, Maintainability, Best Practices, Data Security, Auditing, Audits, AI Prompts, AI Workflow, ChatGPT Prompts, Authentication, Third-party APIs, Third-party Integration, Integration, API Development, Vibe Coding, Compliance
Lead Software Engineer & Technical Architect
2024 - 2025
Gendo
- Established an AI‑assisted development methodology across a five‑developer team, roughly tripling commits and pull requests delivered per developer.
- Led the cross‑functional team as project leader, owning architecture, code quality, and release standards end-to-end and reinforcing them through hands‑on reference implementations and mentorship.
- Established technical excellence through hands-on reference implementations, code quality mentorship, and streamlined release processes.
Technologies: Agile Software Development, Artificial Intelligence (AI), Node.js, React, CI/CD Pipelines, GitHub Actions, SST, Pulumi, Infrastructure as Code (IaC), Management, Architecture, Agentic AI, Python, Technical Writing, Harness, Large Language Models (LLMs), Claude Code, AI-assisted Development, AI-generated Code, Leadership, Agentic Coding, Fractional CTO, Technical Leadership, Workflows, User Experience (UX), User Interface (UI), AI Tools, Authentication, API Development, Vibe Coding
Head of Engineering (via Toptal)
2023 - 2024
Aspire HR Software, LLC
- Accomplished the architecture and development of a multitenant next-gen HR SaaS application, classified as very sophisticated by AWS architects, resulting in a robust and scalable cloud solution.
- Established foundational code standards, testing methods, and repository organization, including the selection and utilization of AWS services, resulting in a streamlined development process.
- Created a CI/CD pipeline capable of deploying serverless applications with infrastructure within 10 minutes, resulting in enhanced developer productivity and faster development cycles.
- Set up DynamoDB working guidelines in line with the latest single-table design standards and designed a data ingestion pipeline using DynamoDB streams, resulting in optimized data management.
- Hosted over 50 pair programming sessions, resulting in improved coding skills and knowledge sharing among developers.
- Developed the entire project's infrastructure as code (IaC) using AWS CDK and SST, resulting in a reliable and maintainable infrastructure deployment process.
- Guided the decision-making process on the use of various AWS services, including Lambda, Step Functions, Cognito, SQS, and SNS, resulting in an efficient and effective cloud service integration.
Technologies: Node.js, TypeScript, Amazon Web Services (AWS), Serverless, AWS Lambda, Amazon DynamoDB, AWS Cloud Development Kit (CDK), Automated Testing, Amazon Cognito, Single Sign-on (SSO), Secure Code Best Practices, Amazon S3 (AWS S3), SST, Solution Architecture, REST, Shell, JSON, Microservices, Agile, Infrastructure as Code (IaC), HTML, CSS, Event-driven Architecture, Front-end, Web Development, Containers, Continuous Delivery (CD), Data Engineering, ETL, Full-stack Development, Project Management, Software as a Service (SaaS), API Architecture, Amazon API Gateway, Code Review, React, Artificial Intelligence (AI), Python, Harness, Large Language Models (LLMs), Data Modeling, Amazon Simple Queue Service (SQS), AWS Step Functions, GitHub, Continuous Integration (CI), Database Architecture, Databases, Systems Design, Leadership, Cloud Infrastructure, System Architecture, Technical Leadership, Pipelines, Role-based Access Control (RBAC), User Roles, User Experience (UX), User Interface (UI), Security, Clean Code, Data Architecture, Reliability, Scalability, Performance, Maintainability, Best Practices, Data Security, Auditing, Audits, Authentication, API Development
Full-stack Engineer (via Toptal)
2023 - 2023
PLS Logistics
- Accomplished the maintenance and development of new AI and ML components, resulting in the automation of document revision and invoice release, enhancing operational efficiency.
- Implemented new testing standards using Java, Spring, and PostgreSQL, which leveraged software quality and resulted in a more robust and reliable product.
- Accomplished the refactoring and improvement of various legacy components within a time-sensitive environment, resulting in enhanced system performance and reduced technical debt.
Technologies: Java, Angular, JavaScript, Spring, AngularJS, Hibernate, Agile, CI/CD Pipelines, REST, Shell, JSON, Microservices, HTML, CSS, Web Development, Full-stack, Data Engineering, Full-stack Development, Optical Character Recognition (OCR), API Architecture, Code Review, Artificial Intelligence (AI), Python, Large Language Models (LLMs), AI Integration, Workflow Automation & System Integration, Apache Maven, Data Extraction, Workflows, Third-party APIs, Third-party Integration, Integration
Cloud Engineer (via Toptal)
2022 - 2023
Catalyst
- Accomplished the creation and enforcement of project architecture, build, code, and test standards for a Node.js, TypeScript, and AWS CDK application, resulting in a high-quality and maintainable codebase.
- Built a shared library for use by other developers, enabling the creation of on-the-fly deployment pipelines with AWS CodePipeline using AWS CDK and TypeScript, resulting in streamlined development processes.
- Created build scripts for assembling TypeScript projects and automated library releases with semantic release, resulting in efficient project builds and consistent versioning.
- Led a significant project refactoring that improved adherence to AWS CDK standards and better code organization, resulting in enhanced project structure and maintainability.
- Worked on unit test standards for AWS components. Created unit test standards for AWS CDK and AWS Lambda TypeScript components, resulting in a reliable and systematic testing framework.
- Contributed to code review and standards compliance. Ensured that all developers were adhering to good standards through code PRs, resulting in a collaborative and quality-focused development environment.
Technologies: AWS Lambda, TypeScript, Amazon Cognito, Amazon Web Services (AWS), Angular, Amazon S3 (AWS S3), JavaScript, AWS CodePipeline, Cloud, Amazon DynamoDB, Back-end, APIs, REST APIs, Integration Testing, Unit Testing, Architecture, Node.js, Jest, NoSQL, Solution Architecture, REST, Shell, JSON, Microservices, Agile, Infrastructure as Code (IaC), HTML, Web Development, Containers, Continuous Delivery (CD), Data Engineering, Full-stack Development, Project Management, Software as a Service (SaaS), API Architecture, Amazon API Gateway, Code Review, Artificial Intelligence (AI), Technical Writing, GitHub, Continuous Integration (CI), Cloud Infrastructure
Senior Java Expert (via Toptal)
2021 - 2022
SWYP, LLC
- Enhanced an Amazon ECS deployment pipeline using Docker/CircleCI, resulting in a more robust microservice architecture.
- Developed fixes/improvements for Spring Boot microservices with Firebase and AWS integration, enhancing system reliability.
- Contributed to release schedule adherence. Maintained tight release schedules, ensuring all project deadlines were met, demonstrating strong time management.
Technologies: Java, Spring Boot, Spring, Microservices, Amazon Elastic Container Service (ECS), CircleCI, CI/CD Pipelines, Firebase, Back-end Development, RESTful Web Services, MySQL, Hibernate, Linux, Spring Data JPA, Amazon Web Services (AWS), Amazon S3 (AWS S3), Cloud Computing, IntelliJ IDEA, Spring 5, Back-end, APIs, REST APIs, Integration Testing, Unit Testing, Java 11, Java 8, REST, Shell, JSON, Agile, Infrastructure as Code (IaC), HTML, Web Development, Containers, Continuous Delivery (CD), Full-stack Development, API Architecture, Amazon API Gateway, Code Review, AWS Fargate, Amazon Simple Queue Service (SQS), Docker, Docker Hub, GitHub, Continuous Integration (CI), Apache Maven, Spring Data
Back-end Developer (via Toptal)
2021 - 2022
MP Analytics Limited
- Enhanced an application. Improved a multi-bank data app, resulting in refined investment strategy analysis.
- Boosted call times by optimizing SQL and JPA, enhancing data processing efficiency.
- Implemented new features and tests, leading to a more dynamic application.
- Transitioned to microservices, created GitHub Actions, Dockerfiles, and scripts, ensuring agile deployment.
- Developed an async file processor with Amazon SQS/S3, accelerating XLS file uploads.
Technologies: Java, Spring Boot, Hibernate, Back-end Development, RESTful Web Services, MySQL, Linux, SQL, Ubuntu, Test-driven Development (TDD), Spring, Git, Spring Data JPA, Amazon Web Services (AWS), Amazon S3 (AWS S3), DevOps, Software Architecture, Cloud Computing, IntelliJ IDEA, Spring 5, CI/CD Pipelines, Back-end, APIs, REST APIs, Integration Testing, Unit Testing, Java 11, Architecture, Java 8, REST, Shell, JSON, Microservices, Agile, HTML, Web Development, Containers, Continuous Delivery (CD), Data Engineering, GitHub Actions, Full-stack Development, Project Management, API Architecture, Amazon API Gateway, Code Review, Amazon Simple Queue Service (SQS), Amazon RDS, Docker, Docker Hub, GitHub, Continuous Integration (CI), Apache Maven, Spring Data, Databases
Back-end Engineer
2021 - 2021
Shoshin Works
- Developed an application for NASA for predicting the future of aviation, integrating NLP and enhancing data analysis.
- Integrated SerpApi and Zyte API, streamlining data acquisition from Google and HTML sources.
- Created abstract Java components, facilitating expansion with new external services.
- Managed Java/Spring data with MongoDB Atlas, ensuring robust data connectivity.
Technologies: Java, Spring, Back-end Development, RESTful Web Services, MySQL, Linux, SQL, Ubuntu, Test-driven Development (TDD), Git, Amazon Web Services (AWS), AWS Lambda, Spring Boot, Amazon S3 (AWS S3), DevOps, Software Architecture, Cloud Computing, IntelliJ IDEA, Reactive Streams, Minimum Viable Product (MVP), Spring 5, CI/CD Pipelines, Amazon Elastic Container Service (ECS), Back-end, APIs, REST APIs, Integration Testing, Unit Testing, Java 11, Architecture, MongoDB, Java 8, REST, Shell, JSON, Microservices, Agile, Infrastructure as Code (IaC), HTML, Web Development, Containers, Continuous Delivery (CD), Data Engineering, Full-stack Development, Project Management, Artificial Intelligence (AI), API Architecture, Amazon API Gateway, Code Review, API Integration
Java and Spring Engineer (via Toptal)
2019 - 2021
Wearsafe Labs
- Contributed to IoT message processing. Developed Java AWS Lambda for IoT and configured AWS IoT/Kinesis, resulting in efficient device communication.
- Worked on a concurrency mechanism. Created Java locking for device messages, preventing concurrent changes and ensuring data integrity.
- Improved a legacy codebase with refactoring and tests, increasing delivery reliability and deployment speed.
- Enhanced development with better PR reviews and leaner scrum, leading to improved project management.
- Implemented Memcached on AWS Elasticache to prevent message duplication, which optimized processing.
- Worked on an end-to-end testing platform. Established a tester platform for AWS IoT to DB message flow, enabling thorough system testing.
- Contributed to a continuous delivery strategy. Developed a zero downtime delivery strategy with a rollback option, ensuring seamless production updates.
- Focused on audio data management. Created Lambda for audio data processing and storage on S3, streamlining data handling.
- Redesigned DB test architecture, making tests five times faster and reducing code by two-thirds.
- Implemented AWS X-Ray for API tracing, enhancing monitoring and troubleshooting capabilities.
Technologies: Spring, Java 8, Back-end Development, RESTful Web Services, MySQL, Agile Software Development, Internet of Things (IoT), Hibernate, Java, Linux, SQL, Ubuntu, Test-driven Development (TDD), Git, Spring Data JPA, Amazon Web Services (AWS), AWS Lambda, Spring Boot, Amazon S3 (AWS S3), DevOps, Software Architecture, Cloud Computing, IntelliJ IDEA, AWS IoT, CI/CD Pipelines, Back-end, APIs, REST APIs, Integration Testing, Unit Testing, Java 11, Architecture, Solution Architecture, REST, Shell, JSON, Microservices, Agile, HTML, Front-end, Web Development, Containers, Continuous Delivery (CD), Data Engineering, Full-stack Development, API Architecture, Code Review, Data Modeling, AWS X-Ray, GitHub, Continuous Integration (CI), Apache Maven, Spring Security, Spring Data, Database Architecture, Databases, Cloud Infrastructure, Pipelines, Authentication, API Development
Java Architect
2019 - 2019
Dandelion Development
- Defined project structure with Spring Boot 2 and developed most of the application.
- Led two other developers ensuring code quality and testability through code reviews.
- Created an integration layer for interacting with ERP and CRM sides using Spring 5's new web client.
- Created test cases structure for each code sector: controllers, database, and entities. Achieved 75%+ overall code coverage.
Technologies: Spring Boot, Spring 5, Java 8, Back-end Development, RESTful Web Services, MySQL, Agile Software Development, Hibernate, Java, Linux, SQL, Ubuntu, Test-driven Development (TDD), Spring, Git, Spring Data JPA, DevOps, Software Architecture, Cloud Computing, IntelliJ IDEA, CircleCI, Minimum Viable Product (MVP), CI/CD Pipelines, Back-end, APIs, REST APIs, Unit Testing, Java 11, Architecture, REST, Shell, JSON, Agile, HTML, Web Development, Full-stack, Continuous Delivery (CD), Data Engineering, ETL, Full-stack Development, Project Management, API Architecture, Code Review, API Integration, Data Modeling, Continuous Integration (CI), Apache Maven, Spring Security, Spring Data, Database Architecture, Databases, Systems Design, Leadership, System Architecture, Technical Leadership, Enterprise Systems, Third-party APIs, Third-party Integration, Integration
Java Engineer
2018 - 2018
Project44
- Created definitions of how to integrate with external services from logistics providers, matching our modeling to providers' custom modeling.
- Developed integrations with logistics carriers using an API made by P44 for data parsing/processing.
- Developed unit and integration tests for components using the latest standards.
Technologies: Spring, Java 8, Back-end Development, RESTful Web Services, Agile Software Development, Hibernate, Java, MySQL, Linux, SQL, Ubuntu, Test-driven Development (TDD), Git, Spring Data JPA, Spring Boot, Software Architecture, Cloud Computing, Back-end, PostgreSQL, APIs, REST APIs, Unit Testing, Java 11, REST, Shell, JSON, Agile, HTML, CSS, Web Development, Continuous Delivery (CD), Data Engineering, Full-stack Development, API Architecture, API Integration, Spring Data, Third-party APIs, Third-party Integration, Integration
Java Lead Engineer (via Toptal)
2017 - 2018
Aon Inpoint
- Architected a Java 8 Spring Boot project, resulting in a robust and scalable application.
- Created REST services for surveys and reports, enhancing client interaction and data benchmarking.
- Developed comprehensive test coverage, ensuring reliability across multiple scenarios.
- Established an email queue system for surveys, streamlining communication processes.
- Implemented a multi-language survey system, personalizing the user experience.
- Enforced user security with JWT for endpoints, bolstering authentication measures.
- Initiated a CI/CD pipeline with Docker/CircleCI, achieving efficient deployment cycles.
Technologies: Spring, Java 8, Back-end Development, RESTful Web Services, Agile Software Development, Hibernate, Java, MySQL, Linux, SQL, Ubuntu, Git, Spring Data JPA, Spring Boot, Software Architecture, Cloud Computing, CircleCI, Customer Relationship Management (CRM), Back-end, APIs, REST APIs, Unit Testing, Java 11, Solution Architecture, REST, Shell, JSON, Agile, HTML, CSS, Front-end, Web Development, Continuous Delivery (CD), Data Engineering, Full-stack Development, Project Management, API Architecture, Technical Writing, Jenkins, Apache Maven, Apache Tomcat, Spring Batch, Spring Security, Technical Leadership, Reporting, Reports, Security, Enterprise Systems
Senior Java Software Engineer
2013 - 2015
IBM
- Handled architecture and development of Jakarta EE components using SOAP and RESTful web services, test-driven development (TDD), JPA (OpenJPA and Hibernate), unit testing (JUnit and JMock), integration testing, and a continuous delivery model.
- Implemented the architecture and setup of cloud environments, creating images and a provision/deprovision process. The environments were used as environments for developers hired through the IBM Liquid platform.
- Led development events in the IBM Liquid platform (a crowdsourcing platform of short cycle assignments), creating development specifications, validating solutions provided by developers, and integrating code into the existing one.
- Created and improved processes for automating tasks such as deployments, module packaging, and WebSphere management with Python scripting.
- Handled administration and configuration of the WebSphere Application Server.
- Worked as a support analyst, providing ongoing support for high-availability production environments.
Technologies: Back-end Development, RESTful Web Services, Agile Software Development, Hibernate, Java, Linux, SQL, Ubuntu, Back-end, APIs, REST APIs, Unit Testing, Java 11, Shell, JSON, Agile, OpenJPA, HTML, CSS, Web Development, Continuous Delivery (CD), API Architecture, Technical Writing, Jenkins, Apache Maven, Apache Tomcat, Enterprise Systems
Senior Java Software Engineer
2011 - 2012
ADP
- Developed Java components for ADP's portal application, enhancing security measures and user trust.
- Worked on the migration of a portal platform to a PaaS model, streamlining operations and reducing costs.
- Contributed to an agile team, achieving goals efficiently through daily scrum meetings and collaborative efforts.
Technologies: Back-end Development, RESTful Web Services, Agile Software Development, Hibernate, Java, Linux, SQL, Ubuntu, Customer Relationship Management (CRM), Back-end, APIs, REST APIs, Unit Testing, Java 11, Shell, JSON, Agile, HTML, CSS, Web Development, API Architecture, Apache Tomcat, Role-based Access Control (RBAC), User Roles, Enterprise Systems
Experience
FalconHR
In my role at FalconHR, I led the creation of a cutting-edge HR SaaS platform recognized for its sophistication by AWS architects. My contributions included architecting a robust, scalable cloud solution and establishing comprehensive code standards. I innovated a CI/CD pipeline that streamlined serverless application deployment within ten minutes, significantly boosting developer efficiency. I also set the benchmark for DynamoDB usage with single-table design guidelines and crafted a data ingestion pipeline. My commitment to knowledge sharing was evident as I conducted over 50 pair programming sessions, enhancing the team's coding prowess. Furthermore, I pioneered the project's infrastructure as code using AWS CDK and SST, ensuring a dependable deployment process. My strategic guidance on AWS service integration fostered an effective cloud ecosystem, optimizing our tech stack.
Inter-Enterprise Process Director (IEPD)
http://www.ibm.comAs a pivotal Java developer for the IEPD project, an advanced inter-enterprise data orchestrator, I played a crucial role in the system's ability to efficiently handle and route calls from malfunctioning hardware devices, ensuring rapid problem resolution. My expertise was instrumental in the development of key application components that facilitated the seamless integration of web service calls and email communications.
In the wake of IBM's adoption of the innovative Liquid development methodology post-2013, I spearheaded its implementation within our project. This involved a strategic overhaul of the development process, where I was responsible for setting up cloud-based environments, meticulously crafting development specifications, and managing the transition to a modular, externalized workflow. My leadership ensured a smooth adaptation to this methodology, significantly enhancing our project's agility and responsiveness.
My comprehensive oversight of the development lifecycle, from environment setup to code review, underscored my commitment to excellence and my central role in the project's success.
In the wake of IBM's adoption of the innovative Liquid development methodology post-2013, I spearheaded its implementation within our project. This involved a strategic overhaul of the development process, where I was responsible for setting up cloud-based environments, meticulously crafting development specifications, and managing the transition to a modular, externalized workflow. My leadership ensured a smooth adaptation to this methodology, significantly enhancing our project's agility and responsiveness.
My comprehensive oversight of the development lifecycle, from environment setup to code review, underscored my commitment to excellence and my central role in the project's success.
Wearsafe
At Wearsafe, I enhanced a cloud-based app for wearable device data using Java and AWS by improving IoT message processing, establishing a concurrency mechanism for data integrity, and refactoring the codebase to boost reliability and speed. I streamlined development with better PR reviews and a lean scrum process, implemented Memcached to prevent duplicate messages, and set up an end-to-end testing platform. My continuous delivery strategy ensured zero downtime with a rollback feature. I also managed audio data with AWS Lambda and Amazon S3, redesigned the DB test architecture for faster, leaner tests, and integrated AWS X-Ray for superior API monitoring. This project showcased my ability to develop robust, scalable solutions.
Experience Monitor 2
As the lead architect and back-end developer for EM2, I played a pivotal role in shaping an application that revolutionizes customer satisfaction assessment in the insurance sector. Utilizing Java 8 and Spring, I directed key architectural decisions, from selecting cutting-edge technologies and APIs to structuring a sophisticated translating system. My strategic implementation of design patterns and a secure deployment pipeline ensured a robust back-end infrastructure. I meticulously laid out REST endpoints to streamline data flow, contributing to a seamless user experience. This project was a testament to efficiency, delivering on promises and remaining under budget, earning client satisfaction and leading to their autonomous maintenance of the solution.
MH Data Synchronizer
As the lead architect for the Mariana Tek to HubSpot Synchronizer, I spearheaded the seamless integration of ERP and CRM systems with a sophisticated data warehouse. My role encompassed steering pivotal architectural decisions, establishing rigorous code and testing standards, and designing a robust CI/CD pipeline. This strategic initiative resulted in a highly successful project characterized by its near-perfect execution with minimal issues, thereby significantly enhancing data synchronization capabilities between the fitness app Mariana Tek and HubSpot.
Education
2005 - 2013
Bachelor's Degree in Computer Engineering
Pontificia Universidade Católica do Rio Grande do Sul - Porto Alegre, Brazil
Certifications
OCTOBER 2022 - PRESENT
JavaScript Unit Testing - The Practical Guide
Udemy
AUGUST 2022 - PRESENT
The Nuts and Bolts of OAuth 2.0
Udemy
AUGUST 2022 - PRESENT
Reactive Microservices with Spring WebFlux
Udemy
AUGUST 2022 - PRESENT
TypeScript - 2022 Edition
Udemy
JUNE 2022 - PRESENT
Java Reactive Programming
Udemy
MAY 2011 - PRESENT
Oracle Certified Professional, Java SE Programmer
Oracle
Skills
Libraries/APIs
Reactor, Node.js, REST APIs, OpenAI API, Zod, Playwright, Claude API, API Development, React, OpenJPA
Tools
CircleCI, Docker Hub, GitHub, IntelliJ IDEA, Apache Tomcat, Jenkins, Git, Shell, Apache Maven, Amazon Elastic Container Service (ECS), Amazon Simple Queue Service (SQS), Prisma, Claude Code, Claude, AWS Fargate, Apache Iceberg, AI Prompts, Amazon Virtual Private Cloud (VPC), ChatGPT, Vitest, Amazon Cognito, AWS Cloud Development Kit (CDK), AWS Step Functions
Languages
Java, SQL, JavaScript, TypeScript, Java 11, Python, Java 8, HTML, CSS
Frameworks
Spring 5, Spring, Hibernate, Spring Boot, Spring WebFlux, OAuth 2, JSON Web Tokens (JWT), Trino, Tailwind CSS, Agentic Frameworks, Spring Batch, Spring Security, Jest, Next.js, Angular, AngularJS, SST
Paradigms
Continuous Integration (CI), REST, Test-driven Development (TDD), Agile Software Development, Agile, Continuous Delivery (CD), ETL, API Architecture, Model Context Protocol (MCP), Role-based Access Control (RBAC), Clean Code, Maintainability, Best Practices, Microservices, DevOps, Testing, Unit Testing, Automated Testing, Secure Code Best Practices, Event-driven Architecture, Management
Platforms
Amazon Web Services (AWS), Docker, Linux, AWS Lambda, Ubuntu, AWS IoT, Harness, Vercel, Firebase
Storage
Amazon S3 (AWS S3), Spring Data JPA, JSON, PostgreSQL, MySQL, Spring Data, Amazon Aurora, Database Architecture, Databases, Data Pipelines, MongoDB, NoSQL, Amazon DynamoDB
Industry Expertise
Project Management
Other
RESTful Web Services, Software Architecture, Back-end Development, Integration Testing, Cloud Computing, Reactive Streams, Minimum Viable Product (MVP), CI/CD Pipelines, APIs, Back-end, Architecture, Infrastructure as Code (IaC), Solution Architecture, Web Development, Containers, Data Engineering, Full-stack Development, Artificial Intelligence (AI), Software as a Service (SaaS), Amazon API Gateway, Code Review, Amazon RDS, Technical Leadership, Agentic AI, Technical Writing, Large Language Models (LLMs), AI-assisted Development, AI Integration, API Integration, Data Modeling, AI Architecture, Workflow Automation & System Integration, OpenRouter, Prompt Engineering, SvelteKit, Dagster, AWS X-Ray, AI Agents, LLM Agents, AI-generated Code, GDPR, AI Agent Orchestration, AI Engineering, Anthropic, Mastra, OpenAI, Systems Design, Leadership, Agentic Coding, Agentic Workflow Design, Cloud Infrastructure, Data Extraction, Fractional CTO, System Architecture, Pipelines, User Roles, Workflows, Reporting, Reports, User Interface (UI), User Experience (UX), Security, Dashboards, Data Visualization, Product Owner, AI Tools, Data Architecture, ELT, Reliability, Scalability, Performance, Data Security, Auditing, Audits, AI Workflow, ChatGPT Prompts, Authentication, Third-party APIs, Third-party Integration, Integration, Enterprise Systems, Vibe Coding, Compliance, Internet of Things (IoT), Customer Relationship Management (CRM), Web Security, Okta, Front-end, Full-stack, Optical Character Recognition (OCR), Fintech, AWS CodePipeline, Cloud, Serverless, Single Sign-on (SSO), GitHub Actions, Pulumi, Lean Product Manager, Lean Product Development, CTO, SaaS, Leadership Development
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