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David DelannoyDD

David Delannoy

Full-stack freelance developer

€450/day
Marseille, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About David

Do you have a web project, a business application to build, or a database to exploit? I have been a full-stack developer for 25 years and I work directly with you, from analysis to delivery.

What do I deliver?
  • Showcase websites,
  • E-commerce sites,
  • Custom web applications,
  • Databases,
  • Automation scripts
  • and analysis, technical, and design documents.
My work and my code are documented, users are trained. My dual experience as a developer and trainer allows me to transmit as much as I build.

What sets me apart?
  • I listen before I code,
  • The business component and my clients' field of activity are at the heart of my approach, I have supported individuals, craftsmen, retailers, liberal professions, associations, research organizations, distributors, and financial institutions,
  • I like to understand the links between data and business logic before starting development, to offer well-thought-out solutions rather than quick ones.
What defines me?

Autonomy and method, deep technical curiosity, the ability to quickly assimilate complex subjects, rigor, attentive listening to needs, and full commitment to every project entrusted to me.

My strength: quickly understanding a problem and structuring a logical solution, confirmed by a score of 94% in problem-solving on a CodinGame technical test. I rely on this analytical ability to quickly gain expertise in any technology or language specific to your project.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Marseille (up to 30km)

Experience

  • Un soutien pour apprendre
    Full-stack freelance developer
    TECH
    January 2023 - Today (3 years and 7 months)
    Marseille, France
    WordPress / PHP / Django / Python / PostgreSQL / MySQL / HTML-CSS / JavaScript
    Creation of 2 e-commerce stores, 2 websites, digital support in organic stores, digital marketing mission. Full-cycle business web applications: analysis, design, delivery, maintenance. Iterative approach with phased deliveries and adjustments based on client feedback. Personal project in Django/PostgreSQL, proof of concept for an internal management application for a tutoring association.
    Wordpress PHP HTML/CSS SQL JavaScript
  • AGIRC-ARRCO We+
    Java Consultant
    BANKING AND INSURANCE
    November 2022 - September 2023 (10 months)
    Aix-en-Provence, France
    Spring Batch / JBoss / SQL / PostgreSQL / Scrum
    Application maintenance and support (TMA) on the Central Payment System of the supplementary retirement management IT system. Corrective and evolutionary maintenance on a critical component in production. Advanced SQL querying on business databases with large volumes of data. Iterative development (Scrum).
    Java SQL HTML/CSS Spring Batch Scrum
  • Un soutien pour apprendre - Freelance
    Freelance Developer
    TECH
    July 2018 - October 2022 (4 years and 3 months)
    Les Angles, France
    WordPress / PHP / HTML-CSS / SQL / Javascript
    Creation of websites for VSEs and artisans in a full-cycle approach. Digital mediation for various audiences - individual support in using digital tools. Over 30 students tutored from middle school to higher education in mathematics, physics-chemistry, and computer science.
    SQL Wordpress HTML5 HTML/CSS Web Integration

Recommendations

ML
LW
LT
Monica Levert and 2 other people have recommended David

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Education

  • CompTIA Security+
    Ambiant IT
    2026
    Le CompTIA Security+ (SY0-701) est une certification de sécurité informatique généraliste couvrant cinq domaines : menaces et vulnérabilités, architecture et conception, implémentation (cryptographie, IAM, réseau), opérations et réponse aux incidents, et gouvernance/risque/conformité (GRC).
  • Master II Bioinformatics
    Université LILLE I
    2003
    Forme des spécialistes de l'analyse informatique des données du vivant (génomique, transcriptomique, protéomique), à travers des enseignements de programmation, algorithmique, statistiques/biostatistiques et intelligence artificielle appliqués aux "omiques", généralement complétés par un stage en laboratoire ou en entreprise.

Certifications

  • Comptia Security +
    Comptia

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