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William HollacsekWH

William Hollacsek

CTO Fullstack React Typescript 🚀 Agentic AI

849 €/jour
1 projet
Paris, FR
8-15 ans

Délai de réponse moyen : 1h

Ă€ propos de William

🇬🇧 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!
  • Anglais

    Bilingue ou natif

  • Français

    Bilingue ou natif

  • Chinois

    Capacité professionnelle complète

  • Espagnol

    Notions

En télétravail uniquement
Travaille majoritairement Ă  distance

Expériences

  • Stealth startup
    Technical Consultant
    HIGH TECH
    novembre 2022 - décembre 2022 (1 mois)
    Leveraging this new AI trend with GPT-3 this customer wants to follow the steps of AvatarAI to allow end-users to send AI generated postcards for each life occasion (birthday, wedding, christmas, etc.)

    The web app was built using Next.js (Typescript, React & Bulma) on the frontend and Supabase (Postgres) as the backend. With the API hosted on Vercel serverless functions.

    Integration with OpenAI's GPT3 DALL-E and Davinci completion API were made to generate images and postcard messages.

    This MVP was built in 2 weeks and successfully launched on ProductHunt https://www.producthunt.com/products/postedby-ai
    React.js openai api intelligence artificielle PostgreSQL Supabase Stripe
  • Stealth startup
    Interim CTO
    HIGH TECH
    juin 2022 - août 2022 (2 mois)
    Toronto, Canada
    The customer is a FinTech startup providing payday loan to end-users. They needed to improve the overall business operations by automating user approvals and loan approvals.

    My responsibilities include improving business operation and setting technical direction by removing technical debt and improving code quality.

    To minimize time spent on internal tooling I implemented a approval dashboard using Retool connecting to our Postgres database.
    Supabase React.js JavaScript Typescript API PostgreSQL
  • Hiki
    Technical Consultant
    HIGH TECH
    mai 2021 - juin 2021 (1 mois)
    New York, États-Unis
    The customer is a dating app for people on the spectrum. Their development were stopped by immense technical debt and infrastructure costs.

    I helped them migrate the backend from Firebase to a scalable architecture on GCP that I designed. The new backend was deployed as Cloud Run containers with the API using Hasura in combination with Cloud SQL Postgres to produce a uniform Graphql API.

    We successfully minimized operation costs and increased developer productivity.
    Firebase JavaScript Google cloud Firestore PostgreSQL Hasura GraphQL

Avis

5,0

sur 1 évaluation

OlivierO

Olivier

REVERALL - CHURN HERO

Avis laissé le 10.04.2023

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.

Recommandations

Max BermanMB
Thomas StockerTS
Jules LagadicJL
+1
Max Berman et 3 autres personnes recommandent William

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Formations

  • Engineer's Degree, Computer Science
    UTBM
    2015
  • Master's Degree, Computer Science
    Korea Advanced Institute of Science and Technology
    2015
    Exchange semester spring 2015

Compétences

Catégories