Nathan Barraillé, Machine Learning Developer in Lyon, France
Nathan Barraillé

Machine Learning Developer in Lyon, France

Member since September 17, 2019
Nathan is a Cloud Architect, DevOps, back end, and data engineer with over ten years of experience in top Silicon Valley companies such as Google, LinkedIn, and startups. More recently he was the CTO of, where he built from scratch a fully automated, serverless, machine learning platform and inference API on AWS in Python. He is AWS certified and available for back-end development, DevOps, and Cloud architecture projects.
Nathan is now available for hire


    Amazon Web Services (AWS), APIs, Elasticsearch, Terraform, Machine Learning...
  • Google
    APIs, Android, Kubernetes, Unix, Python, Java
  • Remind
    Amazon Web Services (AWS), Android, Python, Go, Java



Lyon, France



Preferred Environment

Visual Studio Code, Zsh, MacOS

The most amazing...

...Ethereum smart contracts and Python trading bots I've developed were for arbitration trading on the EtherDelta platform.


  • Co-founder and CTO

    2018 - 2019
    • Created from scratch a fully automated machine learning platform for evaluating the impact of external data sources on various customers' machine learning problems and serving them in production.
    • Developed a data pipeline for ingesting CSV datasets, enriching them through REST APIs from partners, feature engineering, and automated machine learning (AutoML) training.
    • Created a REST API in Python (Flask) running on AWS Lambda with an API Gateway for inference.
    • Developed a GraphQL API in Node.js (Apollo) for serving the web application.
    • Developed a web application in React.
    • Developed an elasticsearch cluster for performant search on millions of records.
    • Oversaw the advanced monitoring and alerting infrastructure using AWS CloudWatch, Elasticsearch, and PagerDuty for monitoring all components. Achieved an uptime of 99.99%.
    • Created infrastructure as Code with Terraform for the entire architecture on AWS (RDS, ECS, EC2, S3, Athena, SecretsManager).
    • Implemented authentication and identity management with Auth0 for all the microservices.
    Technologies: Amazon Web Services (AWS), APIs, Elasticsearch, Terraform, Machine Learning, Docker, Python
  • Senior Software Engineer

    2017 - 2018
    • Led the technical efforts for launching Google Pay (mobile NFC payments) in new markets (Japan, Korea) with radically different technologies.
    • Designed and implemented NFC-F payment support in the Google Pay Android app in partnership with phone carriers (NTT Docomo).
    • Integrated Google Pay back end with payment providers and major banks in Japan, in Java.
    • Worked closely with Lotte (biggest retail group in South Korea) to design and implement the integration of their rewards program in Google Pay.
    • Implemented support for store credit cards (credit cards which are only usable in one store, such as Macy's card, Gap card) in Google Pay US.
    Technologies: APIs, Android, Kubernetes, Unix, Python, Java
  • Engineering Team Lead

    2015 - 2017
    • Led the development of Remind's android application. Remind is the leading education messaging platform in the US, with over 50 million active users. The app is #1 of both the App and Play Store in September every year.
    • Set up and managed DevOps processes for both the Android and iOS application using AWS and CircleCI.
    • Designed and overviewed the migration of Remind's API from REST to GraphQL to better serve web and mobile clients.
    • Developed messaging and notification back-end microservices in Go.
    Technologies: Amazon Web Services (AWS), Android, Python, Go, Java
  • Senior Software Engineer

    2012 - 2015
    • Worked as a back-end engineer on the SlideShare team.
    • Re-designed and implemented the file upload back end allowing various formats of presentations (PDF, PPT) to be uploaded and served on the SlideShare platform. Tech stack: Ruby on Rails, Python, PostgreSQL, RabbitMQ.
    • Started and led the development of the LinkedIn SlideShare Android app, in a team of four engineers. Received 4.3+ stars reviews and over 20 million installations. Appeared in Google's official Best Apps of 2014. Tech stack: Java, Android, DevOps.
    Technologies: Amazon Web Services (AWS), Android, Java, Ruby, Python
  • Senior Software Engineer

    2011 - 2012
    Motorola Mobility
    • Worked for the file-sharing startup Zecter in a team of five and acquired by Motorola Mobility after a few months.
    • Participated in the development of the MotoCast application (streaming and synchronization of media content in a private Cloud), used daily by over 600,000 unique users representing a1600% growth over nine months.
    • Designed and implemented a peer-to-peer synchronization API in Java.
    • Developed the streaming server app in Java, in a team with a team of three.
    Technologies: Java
  • Software Engineer

    2009 - 2011
    CLS Group
    • Designed and developed an end-to-end solution allowing any Android-powered device to communicate over the Iridium satellite constellation network, in a team of two.
    • Worked on the REST Api and Android Application in Java.
    Technologies: SQL, APIs, Python, Java
  • R&D Intern

    2009 - 2009
    Thales Alenia Space
    • Designed and developed a new GPS navigation map-matching algorithm adapted to a road-charging context, based on the Viterbi algorithm.
    • Developed several data-formatting and testing scripts in Python.
    • Analyzed the performance of this algorithm against other existing GPS-based navigation algorithms.
    Technologies: Python


  • Blazee - Heroku for Machine Learning

    Blazee is the Heroku for Machine Learning.
    It allows data scientists and engineers to turn machine learning models into a scalable, inference API for using this model from anywhere. It offers a Python library for deploying models in one line of code, straight from a Jupyter Notebook or Python script. It also offers a robust flow for updating and rolling back models once they are in production.

  • provides real-time, AI-powered insurance for mobility platforms. Our state-of-the-art machine learning models and real-time infrastructure use thousands of data points to understand the risk associated with short term mobility transactions better than traditional insurance products. This allows our customers and their users to save 15% or more on insurance price.

  • UX Archive

    UX Archive is a website allowing mobile UX designers to see how the best applications perform various user flows such as login and check out to find inspiration.

  • Ethereum Blockchain Arbitration Bots

    Back in 2017, I created several arbitration bots for decentralized crypto-currency trading platforms (in particular EtherDelta, the leading platform at the time). This included various smart contracts and Python trading bots that were able to take advantage of the fact that such platforms were not performing any order matching, and that smart contract executions were atomic. In practice, the bots were able to find crossed SELL and BUY orders and execute them through my smart contracts in an atomic fashion, eliminating any risk. This was so profitable that many people started doing this and Ethereum had to change their policy on gas spending to avoid this behavior.


  • Languages

    Python, Java, SQL, JavaScript, Go, Ruby, GraphQL
  • Frameworks

    Serverless Framework, Flask, Alembic
  • Libraries/APIs

    API Development, Flask-Marshmallow, SQLAlchemy, Pandas, Keras, Scikit-learn, NumPy, TensorFlow, React, Vue 2, PyTorch
  • Tools

    Amazon Athena, Amazon Elastic Container Service (Amazon ECS), AWS Fargate, Git, Amazon ElastiCache, AWS ELB, Auth0, Zsh, Terraform, Apache Airflow
  • Paradigms

    DevOps, Concurrent Programming, Agile Software Development, Testing, Continuous Integration (CI), Continuous Deployment, REST
  • Platforms

    Android, Amazon Web Services (AWS), Docker, AWS Lambda, Amazon EC2, Linux, Blockchain, MacOS, Visual Studio Code, Unix, Kubernetes, H20
  • Storage

    Amazon S3 (AWS S3), Redis, PostgreSQL, MySQL, Elasticsearch
  • Other

    Amazon API Gateway, APIs, Blockchain Development, Machine Learning


  • Master's Degree in Computer Science and Networks
    2004 - 2009
    Institut National Polytechnique - ENSEEIHT - Toulouse, France


  • AWS Certified Solutions Architect - Associate
    Amazon Web Services

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