Giona Granchelli

Leading technical modernization across a banking department responsible for legacy services and critical data flows, with a focus on cloud migration, engineering enablement, and reliability improvement.

• Led modernization initiatives for legacy services, defining migration paths toward cloud-native architectures on Azure AKS.
• Designed Kubernetes-based platform patterns, CI/CD pipelines, and developer tooling to standardize containerization and deployment across teams.
• Built and improved reconciliation jobs validating financial data consistency across multiple banking systems in a regulated environment.
• Designed ETL pipelines and transformation flows for large-scale financial and master data processing used by downstream services and reporting.
• Improved reliability, observability, and operational robustness of batch and integration flows handling critical banking workloads.
• Acted as a technical multiplier for multiple teams by introducing reusable engineering patterns, paved-road style tooling, and migration guidance.
• Combined hands-on coding with technical leadership, supporting teams in modern engineering practices and reducing delivery friction during transformation.

Core engineer for PayDay, a fintech platform enabling instant payouts for gig-economy workers and freelancers.

• Designed and implemented Kotlin/Spring Boot backend services for payment and payout workflows in a regulated financial environment.
• Built and maintained frontend and mobile capabilities supporting operational finance flows and end-user interactions.
• Contributed to architecture decisions around transaction handling, system integration, and scalable service boundaries.
• Delivered distributed services supporting financial transactions, workflow reliability, and user-facing product capabilities.
• Worked across backend, frontend, and mobile layers, combining product delivery with technical problem-solving in a high-trust domain.

Worked on a project for the Dutch public transportation sector (NS), contributing to an end-to-end solution enabling travel with QR codes instead of conventional tickets.

• Built backend and integration components for ticketing workflows.
• Contributed to real-time communication features using WebSockets.

Worked on BLOX, a cryptocurrency trading platform serving approximately 500k daily users.

• Maintained and extended microservices supporting trading, account management, and analytics.
• Contributed to distributed event-driven architecture using Axon Framework and CQRS patterns.
• Improved stability and performance across multiple backend services.

Worked on Elvis, a scalable distributed Digital Asset Management system for creating, managing, and distributing digital assets.

• Developed and maintained backend and frontend features.
• Participated in code reviews and peer programming.
• Implemented an SSO solution integrating third-party and internal applications, including AWS Cognito and Okta.

Worked on multiple projects in small agile consultancy teams, including IBE and BLOX.

• First project, IBE, a cloud-based teacher-student platform for creating, managing, and taking school exams.
• Developed new features and maintained legacy functionality.
• Built the frontend application from scratch.
• Migrated and rebuilt CI/CD pipelines from Jenkins to GitLab.
• Second project, BLOX, a cryptocurrency exchange app.
• Developed an end-to-end service for managing supported coins on the platform.
• Built functionality for trade trend analysis and usage statistics.

Worked on enterprise systems and distributed architectures in collaboration with industry partners including Thales, Leonardo, Regione Abruzzo, and USRA.

• Service-oriented architectures.
• Distributed systems.
• Web applications.