Houssine Hassayoun

Redesign of the payment system following a previously initiated transformation program.

• Contribution to the design and development of the transaction lifecycle (deposit / withdrawal)

• Integration of multiple payment providers

• Participation in architectural choices and technical design

• Implementation of resilience mechanisms (retry with Polly, SNS/SQS messaging)

• Progressive deployment and feature activation (functional rollback)

Environment: .NET, Azure, Terraform, Cosmos DB, Snowflake, AWS SNS/SQS, xUnit, Reqnrol, Datadog, GitHub Copilot, SQL, Jira, Confluence, Jenkins, Docker, Testcontainers

Fintech missions for FLOA Bank and Betclic Group

Involvement in critical backend systems related to payments and credit.

🔹 Betclic Group – Cloud Migration

• Contribution to the migration of payment services to Azure

• Participation in the implementation of a minimal interruption migration strategy

• Adaptation of application flows and data migration

• Contribution to infrastructure and scaling via Terraform

• First step of a global transformation program subsequently continued as a freelancer

🔹 FLOA Bank – Credit Platform

• Backend development on the redesign of the credit application web platform

• Implementation of a dynamic, configuration-based customer journey

• Contribution to the design of fluid and optimized credit journeys (short / long term)

• Implementation of backend services integrated with core banking

Environment: .NET, SQL, TypeScript, Azure, Terraform

Mission at Cdiscount (Tunisia → Bordeaux)

Internal evolution from a Senior Developer role in Tunisia to a Lead Developer position in France, on backend projects related to marketplace seller recovery (DSI Finance Transverse) at Cdiscount.

🔹 France (Bordeaux) – Lead Developer

• Supervision and coordination of a technical team (.NET, QA, Talend)

• Technical leadership of several projects in parallel

• Backend development and frontend contribution

• Automation of business processes via UiPath

• Autonomous skill development in complex business areas (treasury, marketplace recovery), with progressive handling of associated technical aspects

🔹 Tunisia – Senior .NET / Full Stack Developer

• Involvement in fixed-price projects for various IT departments (finance, payment, recovery)

• Needs analysis and technical design documentation

• Estimation and validation of technical solutions

• Technical supervision of a team (~4 developers)

• Backend and frontend development

• Code review and quality monitoring

Environment: .NET, ASP.NET Core, Web API, React, SQL Server, Dapper, Kubernetes, Azure DevOps, Talend, UiPath