Skill set
Industry fields of expertise
Jacobo in a few words
Ancient Lead Developper chez Wethenew, passioné d'informatique depuis mes 13 ans, je suis quelqu'un de très curieux et proactif.
Je compte plusieurs domaines d'expertise dont l'ingénierie back-end et le scrapping (combiné certaines fois à du reverse engineering).
J'ai déjà fait des APIs répondant plusieurs milliers de requêtes par minute, connectées à des bases de données mySQL comme MongoDB.
Experience
- WethenewLead Backend EngineerJune 2019 - September 2023 (4 years and 3 months)Paris, FranceJoined Wethenew as the very first developper. During four years, some of my main feats were :- Helped build a big tech team, made of 25 persons at its peak and managed two team and heavily participated in the recruiting process.- Helped scale the business from ~20.000 orders to ~500.000/year.- Solely built our very first Back-Office, which helped track sales, supply and logistics.- Had a main role in several strategic product development, may it be our Back-Office, Seller Space (supply site), customer selling website and our in store ventures.- Built an extremely fast and load resistant application, of over 350M request per month and withstanding 1.000 requests/s peaks with 99.99% uptime and ~70ms response times. More technically :- Solution architectured and developed a complete technical stack, under a monorepo form with several applications. Using NestJS, MySQL, AWS and Redis.- Integrated several APIs, enabling features such as automatic label creation, seller payouts, automated and event-driven customer emailing.- Collaborated on the creation of our custom built mobile applications, allowing our logistics and in-store teams to be mobile. This was done using Flutter.- Heavily contributed to the creation of a bug free stack, setting up unitary and end-to-end testing and CI / CD pipelines using Github Actions.- Created our first cloud stack (Heroku and MongoDB), and heavily contributed to its migration to AWS (ECS, S3, VPC). -Put into place the foundations to automatically managed supply sourcing and pricing change. Monitored pricing on concurrent websites through scrapping and did model training on data.
Recommendations
Education
- Master Informatique : Sécurité, Fiabilité et Performance du NumériqueSorbonne Université2020Le parcours Sécurité, fiabilité et performance du numérique (SFPN) offre une formation de haut niveau dans les domaines de la cryptologie et du calcul haute-performance. Ils s'appuient sur des compétences avancées dans plusieurs domaines de l'algorithmique comme le calcul formel et l'arithmétique des ordinateurs