Simon Chang

Simon Chang Email and Phone Number

Software Engineer @ Criteo
paris, île-de-france, france
Simon Chang's Location
Paris, Île-de-France, France, France
About Simon Chang

Python software engineer with a strong experience in data handling and infrastructure design and implementation.

Simon Chang's Current Company Details
Criteo

Criteo

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Software Engineer
paris, île-de-france, france
Website:
criteo.com
Employees:
2950
Simon Chang Work Experience Details
  • Criteo
    Software Engineer
    Criteo Nov 2024 - Present
    Ville De Paris, Île-De-France, France
  • Callyope
    Software Engineer Infrastructure
    Callyope Oct 2023 - Oct 2024
    Ville De Paris, Île-De-France, France
    As one of the first pillars of Callyope, I lead the data infrastructure part, designing and building robust systems on the cloud following best practices, using mainly Python, Terraform and AWS.• Designed and implemented a secure daily backup system to transfer files and database dumps from AWS to GCP. • Built a data warehouse and an end-to-end ELT process using Python and DBT, enabling researchers to create robust training corpus datasets and the operational team to monitor clinical trials effectively. • Developed a serverless architecture for computing tasks and a warehouse querying API, slashing infrastructure costs by over 90% while implementing near-instant auto-scaling and ensuring cloud-backed uptime. • Implemented company-wide CI pipelines for Python/Terraform linting and introduced a Docker workflow, enhancing code readability and reducing deployment issues by over 80%, significantly cutting troubleshooting time from days to hours.
  • Bioserenity
    Software Engineer / Data Engineer
    Bioserenity May 2021 - Jul 2023
    Ville De Paris, Île-De-France, France
    In charge of assisting a dozen Data Scientists from nothing to production.• Built a custom job orchestrator tailored to data scientists’ needs to distribute computing with MapReduce using Python, MongoDB, EC2 and Docker, significantly speeding up computations from hours to minutes and increasing cost efficiency by over 80%, from thousands to hundreds of euros. • Implemented a serverless API to interact with the job orchestrator, reducing API infrastructure cost by over 60% while ensuring near-instant auto-scaling, cloud-backed uptime, and secure authentication. • Developed several monitoring solutions, including periodic checks on team services, which reduced bug detection time by over 80% (from hours or days to minutes), and improved access to machines Docker logs, cutting troubleshooting time by half. • Contributed to the development of CI/CD pipelines, incorporating linters for best practices and automating deployment of the latest versions of infrastructure and applications from development to production, accelerating development time by 30% and reducing human errors by over two third.
  • Sensome
    Stagiaire Data Scientist / Data Engineer
    Sensome Apr 2019 - Sep 2019
    Région De Paris, France
    Mise en place d’outils de traitement de données au sein de Sensome, une start-up issue de l’Ecole Polytechnique spécialisée dans la création de dispositifs médicaux connectés innovants.Utilisation et comparaison de plusieurs bases de données sur le Cloud et choix d’une architecture adaptée aux besoins de l’entreprise.Analyse de données et recherche de corrélations dans les rapports fournis par les médecins dans le but d’améliorer le produit (un guide pour aider les médecins à reconnaitre le type de caillot formé lors d’un AVC). Utilisation d’algorithmes de Machine Learning et analyse d’images par segmentation, le tout en Python.Outils : Python, Google Cloud Platform (GCP), Data Store, BigQuery

Simon Chang Skills

Research Microsoft Excel Microsoft Word Microsoft Office Medical Devices Product Design Troubleshooting Computer Aided Design Testing Customer Service Teamwork Time Management

Simon Chang Education Details

Frequently Asked Questions about Simon Chang

What company does Simon Chang work for?

Simon Chang works for Criteo

What is Simon Chang's role at the current company?

Simon Chang's current role is Software Engineer.

What schools did Simon Chang attend?

Simon Chang attended Efrei - Ecole D'ingénieur Généraliste En Informatique Et Technologies Du Numérique, Southeast University, Concordia University.

What skills is Simon Chang known for?

Simon Chang has skills like Research, Microsoft Excel, Microsoft Word, Microsoft Office, Medical Devices, Product Design, Troubleshooting, Computer Aided Design, Testing, Customer Service, Teamwork, Time Management.

Who are Simon Chang's colleagues?

Simon Chang's colleagues are Arvin Sulikhanyan, Seymur Palombi, Hui Fleutry, Marina Caporuscio, Melissa Stracuzzi, Rareș Mihai Nicolaide, Mrugesh Patel.

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