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Oussama LahmadiOL

Oussama Lahmadi

Senior AI Engineer | Fullstack

€600/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Oussama

Lead Full Stack & AI Engineer. For over 10 years, I have been assisting organizations in designing and deploying digital solutions with high technical requirements.

In recent years, I have specialized in Generative AI and the industrialization of GenAI platforms: designing multi-LLM conversational interfaces, implementing RAG architectures, developing autonomous AI agents, and orchestrating intelligent workflows integrated into business environments.

I undertake high-impact projects in complex contexts (large accounts, data and cloud environments), covering the entire product lifecycle: scoping, architecture, development, deployment, and performance and cost optimization.

My background as a Solution Builder and Lead Developer allows me to combine architectural vision, operational delivery, and support for technical and business teams, with a strong focus on results and quality.

Today, I leverage my expertise for innovative projects requiring mastery of cloud architectures, advanced AI engineering, and the ability to rapidly industrialize scalable solutions.
  • French

    Native or bilingual

  • English

    Fluent

  • Arabic

    Native or bilingual

Can work on-site
Paris (up to 50km), Poissy (up to 50km)

Experience

  • Accor
    Lead Full Stack - AI Engineer
    HOSPITALITY
    February 2023 - Today (3 years and 4 months)
    Issy-les-Moulineaux, France
    Within the Data team, I contributed to the development of an AI chat interface and an AI workflow orchestration platform aimed at centralizing and optimizing the use of artificial intelligence technologies within the group.
    Within the Data team, I contributed to the design and industrialization of an enterprise-grade internal GenAI platform, enabling business teams to create AI assistants, knowledge agents, and automated workflows at scale.

    Mission:

    • Design and development of a chat interface supporting multiple models (LLMs) for various internal use cases.
    • Implementation and integration of a RAG solution to enhance contextual accuracy and knowledge retrieval.
    • Development and deployment of an Agent Builder framework for creating and managing autonomous AI agents.
    • Implementation of AI workflows for diverse business use cases such as Jira and Confluence assistants, Git code review automation, and knowledge management tools.
    • Integration of the Model Context Protocol (MCP) and various technical tools to improve system interoperability and consistency.
    • Testing and integration of third-party automation and AI tools, including n8n, Memos, and other orchestration or knowledge management solutions, to evaluate their relevance and performance within the group's ecosystem.

    Technical Environment

    Frameworks:FastAPI, Svelte, LiteLLM, Memos, n8n, LangChain, LangGraph, MCP
    LLM Providers:Azure OpenAI, AWS Bedrock, Vertex AI
    Cloud & Infrastructure:AWS (Lambda, ECS, RDS, SES, API Gateway), Terraform
    CI/CD & DevOps:GitLab CI/CD, Docker
    Testing:Jest, Pytest, Cucumber, Playwright.
    MCP Python JavaScript Generative AI RAG
  • ACCOR
    Front end Lead expert
    HOSPITALITY
    October 2021 - February 2023 (1 year and 3 months)
    Issy-les-Moulineaux, France
    As part of the development of Accor group's e-commerce platform, I joined the cross-functional front-end expertise team as a lead expert to serve as a reference for front-end development architecture, quality, and best practices.

    Mission:
    ✓ Participation in architecture meetings and technical choices for the migration of the existing solution.
    ✓ Regular code and performance audits.
    ✓ Setting up/maintaining tools necessary for site quality monitoring.
    ✓ Supporting skills development and awareness of teams on web performance and best practices.
    ✓ Proposal and comparative presentation of different architectures and possible technical choices.
    ✓ Setting up technical foundations and participating in the development of shared components (Design Systems, Libraries...)
    ✓ Development of a deployment monitoring tool.
    Core Web Vitals Amazon Web Services (AWS) Node.js React.js Design System
  • Believe
    Senior Front-end Developer
    PUBLISHING
    June 2020 - October 2021 (1 year and 4 months)
    Improving and migrating Believe's legacy solution, a distribution and marketing solution for artists and independent labels.

    Mission:

    ✓ Participation in architecture meetings and technical choices for the migration.
    ✓ Proposal and comparative presentation of different architectures and possible technical choices.
    ✓ Carrying out POCs (Proof of Concepts).
    ✓ Setting up necessary foundations and tooling (micro-app generator, shared npm libs).
    ✓ Setting up a design system foundation.
    ✓ Setting up development flows for different projects (DS, micro-apps...).
    ✓ Setting up CI/CD and versioning systems for micro-applications, DS, and npm libs.
    Micro front-end Svelte PHP AWS Node.js Design System Gitlab CI/CD

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Education

  • Computer Networks Engineer
    ENET'COM Tunisia
    2015

Certifications

Skill set

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