Gunay Valibayli

As Lead Backend Developer at My.gov.az, I led the end-to-end backend development for one of the platform’s most critical and citizen-facing features — the “Məlumatlarım” (My Information) section of the MyGov mobile application.

This feature serves as a centralized digital hub for Azerbaijani citizens, aggregating personal data from various government systems and presenting it in a unified, secure, and real-time interface.

• Implemented backend APIs for all core modules of the My Information page — including identity, education, employment, family, health, military, financial, and transportation records
• Built high-performance reactive microservices using Java, Spring WebFlux, and Project Reactor to handle concurrent requests with non-blocking IO
• Integrated securely with multiple state systems via scalable REST APIs, ensuring seamless and real-time data delivery
• Utilized MinIO for document and media storage, enabling scalable and efficient file management
• Developed a QR sharing feature, allowing users to securely share selected personal data via short-lived, encrypted QR codes
• Applied strong principles of data privacy, access control, and token-based authentication across all services
• Delivered production-ready microservices with full Dockerization, CI/CD automation, and secure configuration management

I was involved in the redevelopment of the authentication core of Unibank’s mobile banking application, with a strong focus on enhancing security, scalability, and performance.

• Rewrote the login and registration system using Keycloak, enabling centralized identity and access management across services
• Integrated Spring Security with Keycloak to implement secure, token-based authentication and role-based access control
• Designed and documented RESTful APIs using Spring Boot and Swagger, enabling seamless frontend and third-party integrations
• Leveraged gRPC for fast, reliable inter-service communication, significantly improving performance between internal microservices
• Collaborated closely with frontend and mobile teams to align OAuth2 and OpenID Connect flows across all user platforms

As a Backend Developer in the Mortgage Squad at Kapital Bank, I contributed to the development of a fully digital online mortgage application platform, focused on streamlining and digitizing the end-to-end mortgage process for customers.

• Developed backend APIs for user authentication (login/register), customer data retrieval, and document processing
• Integrated MinIO for secure, scalable storage of customer-submitted documents
• Implemented inter-service communication using OpenFeign in a microservices environment
• Applied Spring Security to enforce token-based authentication and role-based access control
• Built reliable persistence layers with Spring Data JPA, Hibernate, and Oracle
• Utilized Vault to manage configuration and sensitive secrets securely across environments
• Maintained clean, modular, and maintainable code, following Java and Spring Boot best practices