About Wilson
I’m a senior backend/fullstack engineer working with APIs, microservices and banking systems.
I help companies fix, optimize and deploy backend systems quickly and cleanly.
Main areas:
- Spring / Spring Boot
- Microservices & REST APIs
- Security & authentication
- Docker, CI/CD & Cloud deploy
- Performance & database issues
Perfect for companies that need:
- Fast troubleshooting
- Clean backend architecture
- Production-ready deployments
Response within 24h.
Portuguese
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- International Investment Bank (confidential)Senior Fullstack / Backend Consultant — Banking & Market Data SystemsDIGITAL AND ITJune 2023 - Today (3 years and 2 months)Porto, PortugalSenior fullstack consultant working on international banking systems focused on market data, stock exchanges and investment decision support.I act on a large-scale distributed platform that aggregates, processes and synchronizes financial data from multiple institutions, traders and exchanges, supporting automation and forecasting of securities and investment workflows.My responsibilities include:
- Design and evolution of RESTful microservice architecture
- Migration of legacy monolithic systems to microservices
- Backend development with Java and Spring
- API integration and synchronization with external services
- Performance monitoring and production issue resolution
- Database modelling and optimization (Sybase, MSSQL, MongoDB)
- CI/CD, automation and test coverage improvement
- Collaboration between IT and business stakeholders
- Technical documentation and delivery validation
Technologies: Java, Spring, REST, Vue.js, Docker, MongoDB, Sybase, MSSQL, CI/CD, Splunk, JIRA, Confluence.Business sector: Banking / Financial Markets. - Thoughtworks / Major US Retailer (confidential)Backend Consultant — Microservices & Distributed SystemsDIGITAL AND ITMarch 2021 - December 2022 (1 year and 9 months)United StatesBackend consultant working on distributed microservices systems for a major US retail company, supporting large-scale product lifecycle, sales forecasting and logistics workflows.I acted on a set of microservices responsible for coordinating product data, sales flow, customer choices and demand forecasting, enabling business and logistics teams to operate with reliable, near real-time information.My responsibilities included:
- Development of distributed RESTful microservices
- Design and maintenance of asynchronous event-driven flows
- Integration between multiple domain services
- Performance monitoring and production troubleshooting
- Data modeling and persistence (MongoDB & SQL)
- Messaging systems (Kafka, RabbitMQ)
- CI/CD pipelines and automation
- Collaboration with product, business and logistics teams
- Technical documentation and delivery validation
Technologies: Java, Spring Boot, REST, MongoDB, Kafka, RabbitMQ, CI/CD, JIRA, Confluence.Business sector: Retail / E-commerce / Logistics. - HIRIX / Public Education ERP (confidential)Backend Analyst & Developer — Public Sector ERP SystemsDIGITAL AND ITSeptember 2019 - August 2020 (11 months)Natal, BrazilBackend analyst and developer working on a public education ERP platform used by governmental institutions for human resources, academic management and asset control.I contributed to the evolution and maintenance of a large monolithic ERP system supporting public sector workflows, including time tracking, payroll integration, academic data management and legacy system migration.My responsibilities included:
- Backend development and maintenance of Java-based ERP modules
- Migration of legacy databases to PostgreSQL using ETL processes
- Data modeling and optimization
- Development of business automation routines
- Support for institutional workflows and reporting
- Participation in Scrum ceremonies and sprint planning
- Training and technical guidance for junior developers
- Technical documentation and delivery validation
Technologies: Java, PostgreSQL, PL/SQL, Struts, JSF, Pentaho (ETL), Jenkins.Business sector: Public Administration / Education.
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Education
- Bachelor in Information TechnologyUniversidade Federal do Rio Grande do Norte.Bachelor in Information Technology
- Persistence with JPA, Hibernate and EJB Lite Agile practices of Software Development with Java Rich-web with JSF2, Primefaces 4Persistence with JPA, Hibernate and EJB Lite Agile practices of Software Development with Java Rich-web with JSF2, Primefaces 4