Location: Rua Olindo Xisto Ecker, 39, Estrela | São Miguel do Oeste, Santa Catarina, Brazil
Phone: +55 49 99125-6572
Email: [email protected]
LinkedIn: linkedin.com/in/ebaptistella
Senior Software Engineer and Technical Leader with 20+ years of experience building scalable, secure financial systems. Led teams at top fintech companies (Nubank, PicPay, ONZ Finance) to deliver products that impact millions of users. Expert in distributed systems, microservices, and payment platforms. Specialized in core banking, credit cards, and transaction security. Passionate about mentoring engineers and establishing best practices that improve code quality and team productivity.
ONZ Finance | Remote
Sep 2024 – Present
- Built complete core banking system including instant payments (PIX), transfers (TED/DOC), and financial reconciliations
- Developed and maintained credit card management system integrated with Mastercard
- Created systems for generating regulatory documents (CADOC) to meet Brazilian Central Bank requirements
- Integrated message queues (IBM MQ, RabbitMQ) for reliable transaction processing
- Set up monitoring and observability (Prometheus, Grafana, CloudWatch) to ensure system reliability
Tech Stack: TypeScript/Node.js Go Java PostgreSQL Docker IBM MQ RabbitMQ Prometheus Grafana Amazon CloudWatch
Nubank | Remote
Jan 2022 – Oct 2024
- Led team to launch Nubank's corporate credit card (PJ Card) from concept to production
- Built credit card features: automatic limit increases, additional cards, collateral-based limits (receivables, caixinhas), and transfer limits
- Created first-ever credit card debt refinancing platform for Mexico, opening new revenue streams
- Worked with engineering, product, and compliance teams to deliver complex financial products
- Mentored engineers through code reviews, pair programming, and technical guidance
- Established development standards and reusable libraries to boost team productivity
- Implemented security and compliance practices for financial services
Tech Stack: Clojure Datomic DynamoDB Redis Kafka Kubernetes Prometheus Grafana Splunk
PicPay | Remote
Sep 2020 – Jan 2022
- Built security layer for financial transactions from scratch, protecting millions of transactions daily
- Created distributed validation system across multiple services, message brokers, and databases
- Led feature development and made key technical and architectural decisions
- Mentored engineers on best practices, security standards, and distributed systems
- Established code review processes, pair programming, and shared libraries to improve code quality
Tech Stack: Java PHP MySQL MongoDB Redis Kafka Kubernetes Docker Spring Boot Laravel Debezium Prometheus Grafana New Relic
Evoluum | São Miguel do Oeste, SC
Apr 2020 – Sep 2020
- Led design and development of new application for Unimed health plan, choosing tech stack and architecture
- Delivered full-stack solution with Flutter frontend and Java/Spring Boot backend
- Conducted knowledge transfer sessions to enable smooth handover to Unimed team
- Established development standards and documentation for long-term project maintenance
Tech Stack: Java Flutter PostgreSQL Kafka Kubernetes Docker Spring Boot
Sysmo Sistemas Ltda | São Miguel do Oeste, SC
Sep 2010 – Mar 2020
- Developed and maintained enterprise retail management solutions for 9+ years
- Led development of flexible and stable point-of-sale (POS) system
- Built scalable solutions to support retail operations
Tech Stack: Delphi Java JavaScript PostgreSQL Firebird Docker Spring Boot
Dígitro Tecnologia | Florianópolis, SC
Jan 2008 – Sep 2010
- Built web applications with PHP and JavaScript
- Managed and optimized Oracle databases
Tech Stack: PHP JavaScript Oracle
Portal Tri | São Miguel do Oeste, SC
Jan 2002 – Jan 2008
- Developed and maintained web systems and applications
- Managed MySQL databases and optimized query performance
Tech Stack: PHP MySQL
TypeScript Java Clojure Go PHP JavaScript Delphi Dart
PostgreSQL MySQL Datomic DynamoDB MongoDB Redis Oracle Firebird
AWS GCP Kubernetes Docker
Kafka RabbitMQ IBM MQ
Spring Boot Laravel Flutter NestJS Angular
Prometheus Grafana Splunk New Relic
Clean Arch Hexagonal MVC MVVM Microservices Distributed Systems Event-Driven Architecture Core Banking Systems Agile Scrum Code Review Pair Programming TDD BDD
Universidade do Oeste de Santa Catarina (UNOESC)
Dec 2014
Pontificia Universidade Católica do Paraná (PUCPR)
Dec 2010
Universidade do Contestado (UnC), Santa Catarina
Dec 2005
Faculdades Integradas de Palmas (FACEPAL)
Jun 2004