LeGratin

About the Company

Depuis 2020, LeGratin réunit une communauté dynamique de plus de 120 000 freelances spécialisés dans l’informatique, la tech et le digital. Fondée par un ancien Chief Technical Officer, fort de plus de 7 ans d’expérience en tant que freelance, notre plateforme a été conçue pour transformer la collaboration entre freelances et entreprises en une expérience simple, fluide et enrichissante. Notre mission Accompagner les entreprises ambitieuses – startups, PME et grands comptes – dans la réalisation de leurs projets les plus audacieux, grâce à des freelances triés sur le volet. En connectant les meilleurs talents indépendants à des partenaires exigeants, LeGratin favorise des collaborations durables et impactantes. Rejoignez une communauté où l’excellence et l’innovation prennent vie, pour bâtir les solutions de demain.

Listed Jobs

Company Name

LeGratin

Job Title

Développeur Full Stack .Net et Flutter

Job Description

Job title: Full Stack .NET and Flutter Developer Role Summary: Design, develop, and maintain scalable, secure applications using .NET (C#, .NET Core/6+) for backend services and Flutter (Dart) for cross‑platform front‑end interfaces. Work collaboratively in an agile Scrum environment to deliver high‑quality code and innovative product enhancements. Expactations: - Proven experience in .NET development, microservices architecture, and RESTful API design. - Strong knowledge of Clean Code principles, automated testing (unit & integration), and CI/CD pipelines. - Ability to craft scalable, secure solutions and contribute to system observability with tools like Datadog or Grafana. - Excellent teamwork, communication, and a proactive, results‑driven mindset. Key Responsibilities: - Develop and maintain backend .NET services and frontend Flutter applications. - Design scalable, secure architectures and integrate third‑party APIs. - Collaborate in Scrum ceremonies with product owners, designers, and peers. - Write clean, testable code, conduct code reviews, and uphold quality standards. - Participate in product roadmapping and propose innovative technical solutions. Required Skills: - Intermediate to senior proficiency in C#, .NET Core/6+, microservices, and REST API development. - Solid grasp of software architecture, abstraction, and design patterns. - Experience with Clean Code, unit & integration testing, and CI/CD workflows. - Familiarity with Flutter (Dart), state management, and API integration (preferable). - Knowledge of observability tools (e.g., Datadog, Grafana). - Agile mindset with experience working in Scrum teams. Required Education & Certifications: - Bachelor’s degree in Computer Science, Software Engineering, or a related technical field. - Relevant certifications (e.g., Microsoft Certified: Azure Developer Associate, Flutter Certified Developer) are advantageous but not mandatory.

Issy-les-moulineaux, France

On site

13-12-2025

Company Name

LeGratin

Job Title

Oracle EBS Production support Technical expert

Job Description

**Job title** Oracle EBS Production Support Technical Expert **Role Summary** Senior technical consultant responsible for day‑to‑day running support of Oracle E‑Business Suite (R12.2.5) across multiple production and non‑production environments. Manages environment maintenance, patches, version upgrades, and cloud migration initiatives while coordinating with internal teams and ensuring high service quality in a finance group ERP context. **Expectations** * Demonstrate >15 years of experience in Oracle EBS with strong development and administration skills. * Operate independently in a critical RUN & production environment, consistently meeting quality and continuity requirements. * Communicate effectively in English and work collaboratively with finance and IT tool teams. **Key Responsibilities** * Provide production support, incident resolution, and RUN‑operations for Oracle EBS enterprise. * Maintain and upgrade 10+ EBS environments (production and non‑production). * Apply patches, manage version upgrades, and lead the migration to Oracle Cloud Infrastructure (OCI). * Coordinate with internal teams to ensure service quality and accurate technical deliverables. * Support internal developers on integration tasks, environment management, and supervision. * Participate in new project implementations (e.g., Ivalua integration via Microsoft ADF). * Oversee technical activities with other finance systems (Jenji, BasWare, Panaya, GEO Efficiency). **Required Skills** * Oracle EBS R12.2.5 – AP, AR, GL, FA, Bank Reconciliation modules. * Development: PL/SQL, Forms, Reports, Workflow, BI Publisher, OA Framework, AME. * Integration: file, REST API, Web Services. * Oracle Database administration – patching, tuning, performance monitoring. * Cloud: Oracle Cloud Infrastructure (OCI). * ITIL processes knowledge. * Strong grasp of finance processes: accounting, payments, bank reconciliation. * Proficiency in English (fluent spoken & written). **Nice to Have** * Microsoft Azure Data Factory (ADF) – ETL experience. * Ivalua platform knowledge. **Required Education & Certifications** * Bachelor’s degree in Computer Science, Information Systems, Finance IT, or equivalent. * Oracle EBS R12 Developer/Administrator certification (or equivalent). * Oracle SQL Certified Master (or similar Oracle database certification).

Île-de-france, France

Hybrid

Senior

06-01-2026

Company Name

LeGratin

Job Title

Développeur IT Quant

Job Description

**Job Title:** IT Quant Developer – Pricing **Role Summary:** Seasoned quantitative developer responsible for evolving and optimizing MARS pricing components for Front‑Office and Risk teams. Works in an Agile/DevOps environment to deliver high‑quality, scalable pricing solutions, ensure continuous integration/deployment, and support technology innovation. **Expectations:** - Minimum 5 years of quantitative development experience in market finance. - Strong understanding of rates, credit, equity products, XVA, and counter‑party risk. - Ability to operate in Agile (Kanban) and DevOps settings and collaborate with cross‑functional teams. - Fluent English (written and spoken). **Key Responsibilities:** - Design, develop, and enhance MARS pricing components for Front‑Office and Risk usage. - Implement parallelisation and grid‑computing solutions (e.g., DataSynapse, ArmoniK) to improve pricer performance. - Ensure code quality through testing, business validation, and adherence to best practices. - Manage technical debt and drive continuous improvement initiatives. - Contribute to CI/CD pipelines and support Agile delivery cycles. - Produce technical and functional documentation, impact analysis reports, and remediation plans. - Stay current with emerging IT technologies and propose relevant innovations. **Required Skills:** - Programming: C#/.NET Core/Framework, C++, Java (Scala a plus). - APIs: RESTful services, Web Services. - Databases: SQL and relational database expertise. - Development tools: Visual Studio, IntelliJ. - DevOps stack: Git/Bitbucket, Jenkins, XLDeploy/XLRelease. - Big Data: Hadoop, Apache Spark. - Grid Computing platforms: DataSynapse, ArmoniK. - Agile tools: Jira, Kanban boards. **Required Education & Certifications:** - Bachelor’s degree or higher in Computer Science, Software Engineering, Quantitative Finance, Mathematics, or related field. - Relevant certifications (e.g., CFA, FRM, Scrum Master) are optional but advantageous.

Île-de-france, France

On site

Mid level

06-01-2026

Company Name

LeGratin

Job Title

Ingénieur Support / Analyste fonctionnel et IT Monétique

Job Description

Job Title: Embedded Systems Support Engineer / Functional and IT Monétique Analyst Role Summary: Provide second‑level support and incident resolution for a banking monétique infrastructure, bridging technical, operational and client-facing teams. Manage critical payment flows, oversee production changes, coordinate migrations, and ensure compliance with merchant and regulatory requirements. Expectations: • Execute comprehensive incident analysis and maintain detailed logs. • Communicate findings and solutions across stakeholders (banks, merchants, third‑party vendors). • Monitor essential payment streams and intervene promptly in case of disruptions. • Control, review, and approve deployment of patches, enhancements, and new services. • Direct technical or functional migrations within the client’s information systems. • Lead operational change management and maintain business‑critical maintenance. • Perform continuous functional and regulatory vigilance to support service quality. Key Responsibilities: - Resolve and document 2nd‑tier incidents in the monétique domain. - Supervise and troubleshoot day‑to‑day payment flows (acquisition, authorization). - Review and verify production releases (correctives, evolutions, new services). - Orchestrate technical/functional migrations and integrate new solutions. - Coordinate operational changes and manage maintenance tasks. - Produce incident reports and post‑mortem analyses. - Engage with banks, large merchants, and technical vendors. - Stay abreast of payment scheme regulations and industry best practices. Required Skills: - Minimum 4 years of support experience in payment or financial technology. - Deep knowledge of monétique environments (acquisition, authorization, VISA/MASTERCARD schemes) with a merchant focus. - Strong technical‑functional foundation: system architecture, communication bus, and legacy systems. - Familiarity with cloud platforms and Power Apps development. - Proficient in writing clear incident documentation. - Fluent in spoken and written English. Required Education & Certifications: - Bachelor’s degree in Computer Science, Information Technology, Finance, or a related field. - (Optional) Industry or ITIL certifications may be advantageous.

Île-de-france, France

On site

Junior

06-01-2026