Ambroise ROUSSEL

ℹ️ 𝗖𝗼𝗻𝘁𝗲𝘅𝘁 Strategic consulting for various clients on their application projects. Supporting change management in their software factory. 🎯 𝗠𝗶𝘀𝘀𝗶𝗼𝗻𝘀 ⚙️ Compare various technologies to identify the most suitable for the business context. Outcome: a comprehensive overview of the state of the art, enabling informed budget allocation. 💎 Raise awareness of best practices recommended within the Software Craftsmanship movement. Outcome: a more pragmatic approach, resulting in better-designed, future-proof software. ♾️ Propose a DevOps methodology tailored to the client’s structure and challenges. Outcome: improved time-to-market, more reliable software, and better alignment with business needs. 🧪 Train teams on testing strategies and release management. Outcome: a drastic reduction in production errors and more peace of mind for teams on a daily basis.

ℹ️ 𝗖𝗼𝗻𝘁𝗲𝘅𝘁 Global transformation of the betting offer platform in a context of rapid growth. To decommission an aging monolith that could no longer keep up performance-wise, implementation of an event-driven microservices architecture requiring ultra-low integration latency, high resilience, and virtually unlimited scalability. 🎯 𝗠𝗶𝘀𝘀𝗶𝗼𝗻𝘀 🛠️ Ensure proper component design by training the team in Software Craftsmanship. Outcome: a hexagonal architecture following SOLID / DDD principles, with test coverage exceeding 80%. 🚨 Guarantee a functional platform by reacting swiftly to production issues, with 24/7 on-call support. Outcome: incidents resolved in under 20 minutes on average, day or night. 🔎 Lead technical studies in collaboration with architects to upskill the team on the most complex topics. Outcome: a confident team tackling the unknown thanks to thorough documentation. 🚀 Deliver reactive, resilient, and ultra-performant microservices. Outcome: around ten services deployed to production, forming the core of a highly stable platform. Examples: Kafka Streams buffering, audit, alerting, datalake export, multi-cluster scaling... ⚙️ 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 Cloud providers: AWS, Confluent Kafka, MongoDB Atlas, Snowflake AWS Services: ECS, S3, ALB, Lambda, Elasticache, SNS/SQS, ECR... Communication: gRPC, REST, Kafka (with Kafka Streams), AWS SNS/SQS IaC: Terraform, Terragrunt, Bash, Python, Liquibase CI/CD: Jenkins, GitHub Actions, Dagger Frameworks: .NET 9, Kotlin 2.1, Angular 19 (with NGRX) Testing: xUnit / JUnit, Gherkin, TestContainers, QTest Observability: Datadog and Grafana Methodology: Agile SCRUM with Jira and Confluence

ℹ️ 𝗖𝗼𝗻𝘁𝗲𝘅𝘁 Modernization of an application portfolio dedicated to the resale of used vehicles coming from leasing. As part of the merger between ALD Automotive and LeasePlan, several transformation projects were launched to meet the needs of a growing customer base. 🎯 𝗠𝗶𝘀𝘀𝗶𝗼𝗻𝘀 🪄 Orchestrate the complete redesign of a front-end affected by performance issues and based on a technology that made any evolution nearly impossible. Outcome: a smooth, modern, multi-platform interface leading to a 70%+ reduction in user frustrations. 🔎 Build proofs of concept to guide mobile and API architectural decisions. Outcome: informed choices on the use of Ionic Capacitor and GraphQL, supported by benchmarks. 🚀 Set up robust continuous integration pipelines. Outcome: automated multi-platform deployments enabling fast and traceable releases. 🚨 Provide Level 3 support on the B2C platform. Outcome: incident resolution in compliance with SLAs, ensuring user satisfaction. ⚙️ 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 Cloud: Microsoft Azure (App Services, CosmosDB, Functions, API Management...) IaC: Bicep, Azure CLI, PowerShell CI/CD: Azure DevOps Back-end: .NET 7 Front-end: Angular 14/16, React 15, Razor Mobile: Ionic Capacitor Databases: SQL Server, Cosmos DB API: REST, GraphQL Methodology: Agile SCRUM with JIRA

ℹ️ 𝗖𝗼𝗻𝘁𝗲𝘅𝘁 Reinforcement of the technical team to ensure the maintenance of a wealth management operations application. 🎯 𝗠𝗶𝘀𝘀𝗶𝗼𝗻𝘀 🧪 Define and implement a robust testing strategy on an uncovered codebase. Outcome: test coverage increased to over 80% on critical modules, with automated unit and integration tests. 📈 Support teams in upskilling on testing tools and development best practices. Outcome: a significant rise in TDD adoption, helping to reduce regressions. 🔧 Ensure corrective and evolutionary maintenance of the existing application. Outcome: significant acceleration of the team’s velocity in delivering new features. ⚙️ 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 Back-end: .NET API: SOAP Database: SQL Server Testing: xUnit, Moq

ℹ️ 𝗖𝗼𝗻𝘁𝗲𝘅𝘁 Redesign of a health and life insurance subscription solution, with the goal of ensuring reliability of the platform, improving the user experience, and ensuring long-term maintainability. 🎯 𝗠𝗶𝘀𝘀𝗶𝗼𝗻𝘀 🪄 Orchestrate the full migration of a front-end based on obsolete technology. Outcome: a successful migration from AngularJS 1.8 to React 18, paving the way for future evolutions with confidence. 🚨 Monitor production to detect errors and refine the consistency of reporting. Outcome: improved system reliability and reduced observability costs. 🚀 Perform corrective and evolutionary maintenance of the existing platform. Outcome: significant reduction of the technical backlog and improved application stability. 🛠️ Handle the technical migration of APIs to the latest framework versions. Outcome: upgrade from .NET Framework 4 to .NET Core 6, leveraging the latest advancements. ⚙️ 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 Cloud provider: Microsoft Azure CI/CD: Azure DevOps Back-end: .NET Framework 4.7.2, .NET 6 Front-end: AngularJS 1.8, React 18 Database: SQL Server Communication: Kafka, REST Testing: xUnit, Gherkin, Jest Observability: Azure Monitor Methodology: Agile SCRUM with Jira