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Douglas Storrer

@douglasstorrer

Fullstack Engineer at Fóton Informática developing banking features and enterprise integrations with Java, Spring, and Angular.

Brazil

Message

At Fóton Informática, I develop and maintain banking system features across backend and frontend applications using Spring and Angular. I also work on integrations with enterprise systems and external services.

At CITS – Centro Internacional de Desenvolvimento de Software, I developed Python and Flask REST APIs for authentication and corporate system integrations. I implemented Azure SAML authentication and integrated Keycloak with Azure AD for enterprise applications.

At CITS, I also containerized applications with Docker and Docker Compose and supported Kubernetes deployments. I developed CrewAI proof-of-concept systems with intelligent agents and tasks for automating structured CSV data analysis.

At Sinqia/Evertec, I developed and maintained Java and Spring financial systems, including REST APIs and features for compound financial fee calculations using the Central Bank of Brazil’s daily currency exchange rate API. I also migrated legacy Delphi screens to Java-based architecture using JavaFX and developed SQL Server queries and JasperReports.

Experience

Work history, roles, and key accomplishments

Current

Fullstack Engineer

Current

Fóton Informática

Jul 2026 - Present (3 months)

Develop and maintain banking system features across backend and frontend applications using Spring and Angular. Collaborate with technical leads and business analysts to refine requirements and ensure end-to-end feature quality.

Java Spring Framework Angular SonarQube JBoss Scrum

Backend Engineer

CITS – Centro Internacional de Desenvolvimento de Software

Mar 2025 - May 2026 (1 year 2 months)

Developed REST APIs using Python and Flask for authentication and integration with corporate systems. Refactored authentication structures and implemented Azure SAML, Keycloak, and session management for enterprise applications.

Python Flask Angular Docker Kubernetes Azure Keycloak Crew AI LLM Test Driven Development Clean Code

Java Software Engineer

Sinqia/Evertec

Jan 2025 - Mar 2025 (2 months)

Developed and maintained financial systems and task automation solutions using Java and Spring, including REST APIs. Served as a technical point of reference for team members and new developers.

Java Spring Framework SQL Server Angular Jasper Reports Delphi Git CI CD

Junior Java Engineer

Sinqia/Evertec

Sep 2021 - Jan 2025 (3 years 4 months)

Developed and maintained financial systems and task automation solutions using Java and Spring, including REST APIs. Served as a technical point of reference for team members and new developers.

Java Spring Framework SQL Server Angular Jasper Reports Delphi Git CI CD

Java Development Intern

Sinqia/Evertec

Dec 2019 - Sep 2021 (1 year 9 months)

Developed and maintained financial systems and task automation solutions using Java and Spring, including REST APIs. Served as a technical point of reference for team members and new developers.

Java Spring Framework SQL Server Angular Jasper Reports Delphi Git CI CD

IT Support Intern

Grupo Gadens

Nov 2018 - Oct 2019 (11 months)

Provided technical support for end users and performed hardware and infrastructure maintenance. Monitored tickets and system operations, and customized the open-source GLPI system for internal use.

Windows Server Microsoft Office GLPI PHP

Software Development Intern

Copel Telecom

Apr 2018 - Nov 2018 (7 months)

Developed and maintained the internal ticket management system. Gathered and analyzed system requirements, and performed software testing and defect resolution.

Java JSF JPA Junit Eclipse