Guillaume D.

CTO / lead développeur fullstack senior

Moves to Paris, Paris

  • 48.86
  • 2.3413
  • Indicative rate €450 / day
  • Experience 7+ years
  • Response time 24h
Propose a project The project will only begin when you accept Guillaume's quote.

Availability not confirmed

Propose a project The project will only begin when you accept Guillaume's quote.

Location and geographical scope

Paris, France
Can work in your office at
  • Paris 1er Arrondissement and 50km around
  • Paris and 10km around


Project length
  • ≤ 1 week
  • ≤ 1 month
  • Between 1-3 months
  • Between 3-6 months


  • Verified email


  • Français

    Native or bilingual

  • Anglais

    Native or bilingual

Skills (26)

Guillaume in a few words

Mon expertise technique associée à une compétence de management m'a amené à travailler dans divers domaines et m'a orienté vers l'entrepreneuriat.

- Fintech (CTO): conception et développement d'une plateforme bancaire B2B
- Healthtech (CTO): Industrialisation d'applications métiers à destination des blocs opératoires (cardiologie) et des études médicales
- Sportech: conception et développement d'applications mobiles de second écran (second screen) pour la coupe du monde 2014
- Gaming: conception et développement d'une plateforme de gaming "trivia" orientée white-label.
- Blockchain: Développement d'une plateforme d'ICO, développement d'un lightweight wallet open source (BTC/Zcash...).

Je suis capable d'intervenir rapidement sur différents aspects d'une solution low-level/high-level, back-end/front-end. J'ai une forte vision produit & business grâce à mon expérience entrepreneuriale ainsi qu'une grande capacité d'adaptation au sein d'une équipe, en effet, on ne fait jamais rien seul !



Software Publisher


November 2018 - February 2019

Healthtech : SaaS for medical studies and on-site software for sugery.

What I have done:

– Agile methodology setup for both tech teams and projects managers following a structured SCRUM sprint format enforcing QA and code reviews (pair programming)

– Continuous Integration / Continuous Deployment fully automated with Gitlab on more than 60 Java applications that was regularly deployed manually

– Conception of a brand new infrastructure for highly controlled data storage and regulated by the government for machine learning processing.


Software Publisher

Co-fondateur & CTO

October 2016 - October 2018

Fintech : Online B2B banking platform

As the general director and former CTO of this company I have co-founded, I have led the conception of the product on both the technical side of things and the user experience (technical & functional specifications)
I have recruited the all the members of this team in order to build a strong internal knowhow that aimed to be the smallest online bank in the world.

– Conception/development/launch of a regulated B2B banking platform

– Conception/development/launch of a crypto-currency decentralized platform

– Go to market product goal : QA + Operational processes setup.


Software Publisher

Freelance software engineering consultant

January 2016 - September 2016

Various remote and on-site software engineering mission

Netco Sports

Digital Agency and IT company

iOS Developer

September 2013 - December 2015

Netco Sports

Digital Agency and IT company

Mobile developer

Paris, France

September 2011 - December 2012

Mobile developer :

Nokia Platform Manager

Development of mobile Nokia Symbian applications

Development of Android mobile applications


– Lead developper

– Mobile architect

– Mobile applications UI/UX


Digital Agency and IT company


September 2010 - December 2010


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