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

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

Company Name

LeGratin

Job Title

DBA PostgreSQL & Oracle

Job Description

Job Title: Database Administrator – PostgreSQL & Oracle Role Summary: Lead the operational maintenance, performance optimization, and knowledge transfer for PostgreSQL and Oracle databases within a large international IT organization. Replace an external consultant, mentor an alternate, and empower internal teams to sustain high availability, security, and strategic migration initiatives. Expectations: - 5‑10 years of database administration experience. - Demonstrated ability to manage complex relational environments and advance proficiency of internal staff. - Strong communication, teaching skills, and collaborative mindset. Key Responsibilities: - Administer, monitor, and optimize PostgreSQL (primary) and Oracle databases, including patch management, version upgrades, and index/vacuum tuning. - Secure databases, perform backups and restores across production and pre‑production environments using tools such as pgBackRest, RMAN, and internal CLIs. - Develop and maintain maintenance plans (indexing, statistics, backups, patches). - Conduct performance analysis (query plans, SQL tuning) and implement improvement recommendations. - Automate routine tasks through Shell, Python, and Ansible scripts. - Produce technical documentation and deliver training sessions to transfer skills to on‑site teams and alternates. - Participate in migration and hybrid architecture projects involving PostgreSQL, MariaDB, MongoDB, and occasionally SQL Server. - Collaborate with DevOps (GitLab CI/CD) and monitoring tools (pgAdmin, OEM, internal dashboards) to ensure continuous service quality. Required Skills: - Deep expertise in PostgreSQL and Oracle administration. - Familiarity with MariaDB, MongoDB, SQL Server, and Linux/Windows operating systems. - Proficiency in Shell scripting, Python, and configuration management (Ansible). - Experience with backup tools (pgBackRest, RMAN) and security best practices (role management, audit logging). - Strong analytical, troubleshooting, and documentation skills. - Ability to design and conduct training workshops. Required Education & Certifications: - Bachelor’s degree in Computer Science, Information Technology, or related field. - DBA certifications preferred (e.g., Oracle Certified Professional, PostgreSQL Community Certified Associate).**

Paris, France

Hybrid

Mid level

13-01-2026