Freelancer profile translated to English.
Back to original languageAbout Omar
Do you need a Tech Lead who understands your business challenges before diving into code? With 8 years of experience, I've made it a habit to engage with stakeholders early on to properly define needs and avoid unnecessary back-and-forth. The goal: solutions that are stable in production, easy to maintain, and truly meet user needs. This is how I work daily at SNCF Connect, on structuring topics where quality and reliability are non-negotiable.
French
Native or bilingual
English
Fluent
Arabic
Native or bilingual
Spanish
Basic
Can work on-site
Paris (up to 50km)
Experience
- SNCF Connect and Tech ServicesBackend/Fullstack Developer – SNCF Connect Itinerary DomainTRANSPORTATIONApril 2023 - Today (3 years and 2 months)France• Technical team lead: onboarding, mentoring, code reviews, dissemination of best practices, and skill development support.• Close collaboration with the Product Owner and Scrum Master in framing and maturing topics.• Study, prototyping, and integration of a new partner itinerary API to replace an existing one.==> Participation in defining the tender specifications.==> Needs assessment and project roadmap definition with tight constraints and short deadlines.==>Close collaboration with product and cross-functional teams (security, ops, etc.).==>Active supervision and customer support.==>Key results: new API in production, deadlines and quality met, incremental improvement in progress.• Leading the redesign of the "Where to board? Get closest to the next exit or connection" feature.==>Questioning the initial solution and proposing an alternative.==>Conducting workshops with stakeholders and decision-makers.==>Complete implementation of the solution in Spring Boot and a web app in React/TypeScript.==>Key results: reliable solution covering 40% of the Ile-de-France Mobilités network, replacing an unstable solution based on approximate search.• Technical leadership of itinerary calculation APIs in a critical, high-volume context.==>Guaranteeing the performance and resilience of the APIs.==>Industrializing quality practices: Kotlin linter, Jacoco test coverage, Sonar code analysis, automated Cucumber/Wiremock integration tests.==>Reducing technical debt and modernizing code in Kotlin.==>Performance optimization: eliminating bottlenecks through JVM profiling.==>Key results: P90 80% for 1.5 billion visits in 2024.
- BP2I ‑ BNP ParibasBackend & DevOops Developer – Cloud OrchestratorBANKING AND INSURANCEJune 2021 - February 2023 (1 year and 8 months)93100 Montreuil, France
- Development of backend microservices (Spring Boot, JHipster) for a private cloud orchestrator on IBM Cloud, automating the management of resources (Databases, Kafka, Kubernetes) compliant with banking standards.
- Supporting internal teams in adopting cloud services, with technical support for the creation, configuration, and operation of resources.
- Maintenance of microservices in production with active monitoring, critical incident resolution, and adherence to banking compliance constraints.
- Edifixio (Atos)Backend Developer - MonitorIT Mobile Monitoring ApplicationDIGITAL AND ITSeptember 2020 - June 2021 (9 months)Bezons, France
- Development of new features for MonitorIT, an application allowing companies to monitor their applications and receive instant alerts in case of anomalies.
- Implementation of unit and integration tests (JUnit, Mockito), with CI integration ensuring >70% coverage and continuous code stability.
- Deployment of the application on AWS with scalable infrastructure (EC2, Lambda, S3, RDS) and setup of real-time monitoring via CloudWatch and EventBridge.
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Education
- Master 2Université Sorbonne Paris Nord2020Master Programmation et Logiciels Sûrs
- State EngineerEcole Nationale des Sciences Appliquées, Fès2017Diplôme d'ingénieur, Génie Informatique