Jenniffer Crystine

Contributing to the development and maintenance of internal enterprise platforms at Electronic Arts, focusing on backend services, integrations, and customization of tools that support internal teams and workflows. - Developed and maintained backend services and REST APIs using C# and .NET - Worked on Jira platform customizations, integrations, and extensions to support project-specific requirements - Contributed to internal tools and services designed to improve workflow management and operational efficien

Backend Software Engineer working on legacy system modernization and enterprise platform integration projects, developing .NET APIs, optimizing backend flows, and supporting migrations to cloud architectures, always focusing on reliability, scalability, and business continuity.

Backend Software Engineer on consulting projects for fintech, education, and retail clients, building .NET and SQL solutions focused on financial process automation, corporate system modernization, and high-impact backend platforms. Experience working in environments with large user bases and sensitive data.

Modernization of critical corporate workflows: - Migrated processes from SharePoint 2013 to SharePoint Online - Built automations using Power Automate - Reduced operational friction and increased traceability of internal approvals

Worked in a fintech focused on private-label cards and retail financial operations, handling high transaction volumes and end-user traffic. - Developed .NET backend services integrated with SQL Server to automate payment processing - Converted manual financial workflows into fully automated pipelines - Reduced operational errors and increased transaction reliability - Ensured data consistency in critical financial operations

Backend development for a large-scale educational platform used by hundreds of thousands of students. - Built and maintained .NET services integrated with PostgreSQL - Ensured data integrity during high-volume enrollment periods - Supported platform scalability as institutions and courses expanded

Worked on the security layer of a digital wallet with a significant active customer base. - Implemented encryption integrated with Azure Key Vault - Centralized secret and cryptographic key management - Supported compliance with security and data protection requirements - Reduced the risk of sensitive financial data exposure

- Backend development with Flask and frontend with Flutter for a nutritionist support app - Improved patient data collection flows

- PMO Manager — Junior Enterprise - Undergraduate Research Scholar — CNPq - Marketing Advisor — IEEE Student Branch