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Lionel L.LL

Lionel L.

CTO, Architect, Tech Lead

€780/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Lionel

I have been a developer for 15 years, including 8 years as a freelancer.

My CTO mission at Castelis is coming to an end, I am open to the market, preferably for a CTO / Tech Lead position.

I am constantly keeping up with technological advancements, particularly through personal projects I work on in parallel.
  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Paris (up to 20km), Clichy (up to 20km)

Experience

  • Freelance Castelis
    CTO / Architect
    January 2024 - Today (2 years and 5 months)
    Co-management of a department of 45 people with supervision of staffing, cohesion, and skill development of the teams. Initiation and management of the transformation of development practices through the integration of generative AI (Claude, GPT, etc.). Implementation of AI-assisted development environments, significantly reducing manual code production and improving quality. Technical management of 15 developers: scoping, mentoring, support, and skill development. Design and deployment of client business processes integrating AI (LLM, vector search, cognitive task automation). Management of technical implementation and choices up to production. AI-augmented business processes (LLM, vector search, cognitive automation). In the Digital team responsible for consumer applications. Implementation of agility (Scrum, Daily, Poker Planning) to facilitate development management. Quality and process audit. Standardization of processes and practices to improve knowledge sharing and reduce dependency on certain developers. Improvement of SSO in collaboration with POs, for example, implementing persistent SSO connection across all sites.
  • Freelance Fédération Française de Football
    Tech Lead FullStack
    June 2023 - December 2023 (6 months)
    In the Digital team responsible for consumer applications. Implementation of agility (Scrum, Daily, Poker Planning) to facilitate development management. Quality and process audit. Standardization of processes and practices to improve knowledge sharing and reduce dependency on certain developers. Improvement of SSO in collaboration with POs, for example, implementing persistent SSO connection across all sites.
  • Kartable
    Full Stack Developer Symfony3 Angular2
    EDUCATION AND E-LEARNING
    September 2015 - March 2018 (2 years and 6 months)
    Paris, France
    Development and team maintenance of the website www.kartable.fr.

    Complete redesign of the Kartable platform into a Single Page Application using Angular2 (Angular Universal, Node, Typescript).

    Advanced search and data synchronization on Elasticsearch.

    In-depth management of e-wallets, online payments, bank transfers, automatic renewal subscriptions (Mangopay, Paypal, Braintree, Stripe), etc.

    Integration of several bundles.
    In-depth Git management, Pull Request reviews.
    Team code optimization.

    Development of advanced forms, live chat, and VoIP calls via external API and websockets.
    Migration from Symfony2 to Symfony3.

    Use of external APIs: Asana, Intercom, Facebook, Mailchimp, Hull, Mixpanel, Google Analytics, Adwords, Twilio.
    Symfony 3 jQuery Angular2 Braintree React.js

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Education

  • BTS IG (Information Management Technology)
    ETS Iris
    2012
  • RNCP Engineer
    Ingésup
    2015

Skill set

Categories

  • Other