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Marine JeanningrosMJ

Marine Jeanningros

Frontend Developer

€330/day
Sélestat, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Marine

With my expertise in frontend development, I can offer you web and application solutions to improve your sales, product management, or customer interface. For continuous improvement, I prefer to work according to the Agile methodology, with regular delivery of functional specificities allowing the consideration of customer feedback throughout the development.

I can:
-imagine with you the best way to showcase your business, and develop a design prototype that I can then convert into a web application
-develop the front-end part of your application based on your functional specifications; by working in a multidisciplinary team or independently
-travel to your location regularly in order to maintain fluid communication throughout the project

My strengths are: reliability, listening, organization, flexibility and creativity.

Let's get acquainted!
  • English

    Native or bilingual

  • French

    Native or bilingual

  • Spanish

    Conversational

Can work on-site
Sélestat (up to 50km), Strasbourg (up to 10km), Colmar (up to 10km), Mulhouse (up to 10km)

Experience

  • Erminia Dev (micro-entreprise)
    Web Developer
    SOFTWARE PUBLISHING
    June 2020 - August 2022 (2 years and 2 months)
    Sélestat, France
    Actions performed:

    Definition of client needs
    - Telephone exchange with the client to know their project, their need and their budget
    - Personalized advice based on their positioning in the market and their existing digital tools
    - Elaboration of specifications

    Website design
    - Research concerning the client's area of expertise, to guide the choice in terms of design
    - Creation of a model via a Figma-type tool
    - Exchanges/validation with the client

    Development
    - Integration of the model via Wordpress/Woocommerce or HTML/CSS/JS according to needs
    - Compliance with WCAG 2.0 AA standards for accessibility
    - Compliance with the GDPR (General Data Protection Regulation)
    - SEO optimization and speed thanks to Lighthouse and GTmetrix
    - Securing the site based on the OWASP (Open Web Application Security Project) standard
    - Configuration of google analytics

    Deployment
    - Extensive testing according to a recipe book
    - Deployment on the final url via FTP
    - Monitoring of indexing on google

    Additional services
    - Migration of existing sites
    - Partial redesign of existing sites
    - Setting up mailing lists with Sendinblue
    - SEO, UI/UX consulting

    Results

    Regarding the creation of websites
    - Clear commitment on the duration and scope of the task to be accomplished
    - No surprises along the way compared to the requested functionalities
    - Creation of an online company image in line with the client's area of expertise and their target clientele
    - Fluid and agile communication with clients throughout the project
    - Delivery on time thanks to good anticipation
    - Online publication of websites with good performance scores
    - Absence of security flaws since going online
    - Good indexing on search engines and expected performance based on the keywords targeted during creation

    Regarding redesign and additional services
    - Improved online visibility
    - Increase in prospects
    - Improved readability and brand image

    Portfolio visible here https://erminiadev.com
    Linux LAMP HTML5 CSS3 SASS/SCSS Bootstrap WooCommerce Wordpress Sendinblue Design User Interface Design Stripe PHP phpMyAdmin Google Analytics JavaScript
  • Axialys
    Front end ReactJS Developer
    TELECOMMUNICATIONS
    August 2022 - May 2023 (9 months)
    Actions performed:

    Upstream Design/Architecture
    - Analysis of the specifications and functional needs defined by the Product team
    - Definition of the technical stack, particularly for the frontend and infrastructure

    Software architecture design
    - Pricing and estimation of tasks to be performed
    - User experience/design
    - Regular exchanges and adjustments with the product team around user stories
    - Monitoring the technical feasibility of the models designed by the Product team
    - Proposal of UI/UX improvements

    Development
    - Development and bugfix of the legacy following the return of the customer service (JS/PHP)
    - Integration and development of functionalities for the new interface (ReactJS/NextJS/Mui)
    - Interfacing with data from back-end APIs, formatting requests and normalizing responses from internal microservices

    Maintainability and best practices
    - Functional and unit tests (Jest)
    - Paired code review
    - Paired code session - definition of good code practices
    - Writing technical documentation

    Teamwork
    - Participation in the daily rituals of the team in AGILE mode (Scrum)
    Occasional takeover of the Scrum Master role
    Collaborative project management with Git, Gitlab, Notions, Discord

    Results:

    - Definition of detailed and clear user stories allowing to save time in development
    - Skill improvement thanks to code reviews and collaborative management

    - Easy handling of the code by all developers thanks to the documentation
    - Completion of the redesign of the home page and the general tree structure of the client extranet
    - Completion of the redesign of the Statistics page of the Client extranet
    React.js Jest JavaScript Agile method Material UI API Git Gitlab Next.js Data visualisation CSS3 styled-components SVN User Interface Design
  • Discngine
    Frontend ReactJS Developer
    PHARMACEUTICALS INDUSTRY
    November 2023 - Today (2 years and 7 months)
    Paris, France
    Actions performed:
    - Development of components in ReactJS based on user stories
    - Participation in the rituals set up by the client and the internal team in order to define the next objectives (daily and sprint in Agile mode)
    - Exchanges with the client on the continuous improvements to be made

    - Teamwork on good code practices


    Results:
    - Development of a settings page dedicated to the administration of software dedicated to molecular enumeration: possibility of adding/deleting/editing parameters by calling on API endpoints
    - Improvement of the UI of software dedicated to the creation of a catalog of molecules: improvement of responsiveness on portable and smartphone screens
    - Addition of functionalities to the latter: status icon, possibilities of displaying/hiding information, implementation of access authorizations for different types of users according to their role on the frontend side, implementation of calls to new endpoints in order to retrieve/send/modify new data
    - Customer satisfaction during the demonstration
    React.js Typescript GraphQL Material UI API Agile Azure DevOps SQL

Recommendations

CF
DM
Claire Fraux and 1 other person have recommended Marine

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Education

  • Engineer
    Institut National Polytechnique, Toulouse
    2011
  • Full Stack Developer
    OpenClassRooms
    2021
    HTML, CSS, Javascript, VueJS, NodeJS+Express, API REST, MySQL, MongoDB, standards de l'OWASP, SEO naturel, accessibilité (standards WCAG AA)

Skill set

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