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Ouwaïs ChaouiOC

Ouwaïs Chaoui

Cloud Architect / Fullstack JS & Java Developer

On-demand
4 projects
Nantes, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Ouwaïs

IT Consultant (7 years at Accenture + 3 freelance) with a technical-functional profile, I have worked on several IT transformation projects for large companies. My versatility and appetite for technology allow me to work on IT architecture topics as well as on the implementation of front-end and/or back-end applications. My skill set includes:
- Cloud architecture (AWS / Azure / GCP)
- Full-stack development (React.js, Angular, NestJS, Java Springboot)
  • French

    Native or bilingual

  • Arabic

    Native or bilingual

  • Spanish

    Native or bilingual

  • English

    Native or bilingual

  • Portuguese

    Fluent

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

Experience

  • Specks.io
    CTO / Fullstack Developer
    PUBLISHING
    January 2023 - December 2023 (1 year)
    Implementation and deployment of a SaaS tool for IT product specification:
    ➤ Mockup in Figma and creation of a design system
    ➤ Frontend development in Typescript React.js (react router, react flow, react hook form, tailwind)
    ➤ Backend development in Typescript NestJS
    ➤ Integration of Auth0 for identity management and application security (Oauth2, RBAC rights management...)
    ➤ Setup of the 3-tier architecture on AWS for the REST API type backend
    ➤ Deployment of the Single Page App via AWS S3 and AWS Cloudfront
    ➤ Setup of the product backlog on Notion
    Figma UI/UX Design React.js Tailwind CSS NestJs Auth0 Amazon Web Services AWS ECS AWS S3
  • GRTgaz
    API & Cloud Architect / Tech Lead
    ENERGY AND UTILITIES
    April 2021 - December 2022 (1 year and 9 months)
    Nantes, France
    Development of integration APIs and microservices on AWS / MS Azure:

    ➤ Design and Development of application layers (Java or Javascript) in micro-services pattern for exposing legacy applications and software packages as REST APIs with the clouds:
    ▪️ AWS: use of AWS Lambda, API Gateway, Dynamo DB, S3 services
    ▪️ Azure: use of Azure function, Azure AD, Azure SQL Database, Azure Blob Storage services
    ➤ Design and development of data integration batches between software packages (SAP, Talentsoft ...):
    ▪️ Specification of flows with the business
    ▪️ AWS: use of AWS Batch, S3, SQS services
    ▪️ Implementation in Java Spring Boot or vanilla JavaScript
    ➤ Design and implementation of Oauth2 for AWS layers (Azure AD and AWS Lambda authorizer)
    ➤ Development of API proxies on Apigee (compliance with REST API standards + OASv3)
    ➤ Construction of a PowerBI report presenting Apigee Edge platform metrics for department heads
    Amazon Web Services AWS Lambda Microsoft Azure Azure AD JavaScript Java OIDC OAuth2 Apigee AWS API Gateway AWS API Gateway Azure Functions AWS ECS AWS Batch AWS SQS Microsoft Power BI
  • Accenture
    Cloud Architect / Fullstack Developer
    CONSULTING AND AUDITS
    March 2013 - September 2020 (7 years and 6 months)
    Paris, France
    Significant missions:

    [For a social security branch] - Construction of a new IT system in the cloud coexisting with the legacy IT system

    ➤ Definition of the new architecture principles (hosting of services on the Oracle Java Cloud Service PaaS and communication with the old IT system via Oracle OSB)
    ➤ Definition of the project's application and software architecture (Business services exposed via API in Java Spring Boot, communication with the legacy IT system via Oracle OSB)
    ➤ Realization of the general and detailed application architecture to cover all functional processes of the project
    ➤ Fullstack development in Angular / Java Spring Boot

    [For an association] - Development of a backend module for retrieving job offers from the "public employment portal" (DGAFP) and submitting applications

    ➤ Identification of exploitable Talentsoft APIs, definition of software architecture, and identification of existing code to modify
    ➤ Implementation in Java 9 (Spring Boot) of the proxy and service layer for retrieving job offers and submitting applications via synchronous and asynchronous API calls
    ➤ Realization of unit tests in JUnit
    ➤ Creation of a batch for mass injection of new offers into the application's PostgreSQL database
    Exposing an API for the Angular front-end to retrieve applications (subsequently transmitted to the DGAFP via API call)
    ➤ Mentoring a junior developer

    [for an association] – Design and costing of a serverless architecture on Amazon cloud for the creation of a CV generation service in PDF

    ➤ Analysis of the client's needs and requirements
    ➤ Design of the new service's serverless architecture
    ➤ Identification of the AWS cloud services necessary for project realization (AWS Lambda and API exposure with AWS API Gateway)
    ➤ Creation of a tool for costing the monthly cost of AWS services

    [for an NGO] - IT system audit

    ➤ Analysis of the existing system and requirements gathering
    ➤ Definition of the target state
    ➤ Definition of the adjustment trajectory and associated roadmap

    [For a health organization] - Development of a steering application for project management
    Amazon Web Services SpringBoot Java JavaScript React.js NestJs AWS Lambda AWS API Gateway Angular Java Spring Boot Typescript Microsoft Power BI

Reviews

5.0

Out of 2 ratings

P

Pierre-Marie

GRTgaz Région Ouest

Reviewed on 12/27/2022

Ouwaïs shows patience and manages to bring subjects to completion that had no solution. Ouwaïs is capable of taking on complex technical subjects and effectively follows up on them. He integrates perfectly into the team and contributes to its skill development when necessary. He is also capable of acquiring new skills on subjects he may not master. It was a real pleasure to collaborate with Ouwaïs.
M

Marion

GRTgaz - DSI - Pôle Services IT Transverses

Reviewed on 11/2/2021

Recommendations

MA
NC
Manuel André and 1 other person have recommended Ouwaïs

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Education

  • Computer Science Engineer
    INSA de Lyon
    2013

Certifications

Skill set (49)

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