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William Hollacsek
CTO Fullstack React Typescript 🚀 OpenAI GPT-4
1 project
3 recommendations
  • Suggested rate
    €749 / day
  • Experience8-15 years
  • Response rate50%
  • Response time2 hours
The project will begin once you accept William's quote.
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Location and workplace preferences
Paris, France
Remote only
Primarily works remotely

Project length

  • ≤ 1 month
  • Between 1-3 months
  • Between 3-6 months
  • ≥ 6 months

Company size

  • 1 person
  • 2-10 people
  • 11 - 49 people
  • 50 - 249 people
  • 250 - 999 people

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Expertise (50)
William in a few words
🇬🇧 English below 🇺🇸

Bonjour 🚀

CTO as a service, Architecte et développeur Fullstack je vous accompagne dans la création de vos projets tech.

Je conçois l'architecture et gère la direction produit en mettant en place des stratégies agiles qui correspondent à vos ambitions.

Je suis un ingénieur diplômé et je fais parti de la communauté Techstars que j'ai rejoint en 2020 avec ma précédente Startup.

Spécialisé dans le développement d'applications depuis plus de 7 ans je maîtrise le développement Cloud, Backend, Frontend et Mobile. Fort de cette experience, il me tient à coeur de réaliser des applications de qualité en mettant l'expérience utilisateur au coeur de la stratégie.

Ouvert et passionné, je suis à l’écoute des besoins et attentes de mes clients.
Parlez-moi de votre projet dès maintenant !


Hello 🚀

CTO as a service, Architect and Fullstack developer, I help you build your technical projects.

I design the architecture and manage the product direction by implementing strategies that meet your ambitions.

I have a diploma in engineering and I am part of the Techstars community that I joined in 2020 with my previous Startup.

Specialized in application development for more than 7 years, I master Cloud, Backend, Frontend and Mobile development. With this experience, it is important to me to create quality applications by putting the user experience at the heart of the strategy.

Open-minded and passionate, I am attentive to the needs and expectations of my clients.

Looking for an efficient and effective partner?
Get in touch now!
  • Google

    Menlo Park, CA, USA

    September 1998 - Today (25 years and 3 months)
    If I had to sum up my life up to this point, I'd say it's been one heck of a ride...
    HTML CSS JS Photoshop
1 project on Malt
  • Quality

  • Respects deadlines

  • Communication




Excellente mission avec William. La mission était assez complexe pour comprendre l'historique, William l'a intégré rapidement. William a beaucoup apporté à mon projet en qualité au-delà de ce que j'avais exprimé, et le tout dans les délais contenus. Je n'hésiterais pas à retravailler avec lui.

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3 recommendations

Thomas Stocker and 2 other people have recommended William

Thomas StockerTS
Beneto Studio
I know William for about 10 years, and we have worked together several times on various projects. He's definitely the guy you need for technical problems and has a lot to bring on your project. Each of his startup experience had also learnt him a lot in entrepreneurship, and he's got the ability to switch between technical leader and more executive position. Besides, he also has good communication capacity !
Jules LagadicJL
Jules Lagadic
Schlouk Map
William has great technical skills and perfectly understand technical problems in a business perspective. It was a pleasure to work with him!
Dinarte JesusDJ
Dinarte Jesus
William his an amazing CTO, he has the knowledge in the latest technologies trends and definitely the know-how to build the solution with the right tools. Besides this, he's a great person to work and interact since he's open to give and receive feedback.

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