Emilien Kenler

Email: hello@emilienkenler.com

Work experience

From April 2019
Director of Systems Architecture at pafin Inc. (previously Cryptact Ltd.) – Tokyo, Japan
  • Infrastructure
    • Setup & maintain Kubernetes infrastructure for all our applications
    • Infrastructure as Code using Terraform and Kustomize
    • Leveraging AWS services: EKS, RDS, MSK, SQS, S3, Cloudfront, …
    • GitOps and Continuous Delivery using ArgoCD and CircleCI
    • Setup & maintain an isolated Serverless infrastructure using ECS, Fargate and Aurora Serverless
    • Migration of databases from MySQL to PostgreSQL
    • Migration from Ubuntu to Bottlerocket for Kubernetes nodes
    • Migration from kiam to IAM Roles for Service Accounts
  • Application development
    • Introduced an API to allow the web application to access market data, instead of accessing the database directly to reduce coupling
    • Wrote new components for the data pipeline using Scala, Python, Akka, gRPC, Kafka, Flink, PostgreSQL and ScyllaDB
    • Started the effort to transform our data pipeline into an event-driven pipeline using Scala, Akka and Kafka
    • Improved performance (x100) of the cryptocurrency ledger computation process while reducing resource consumption
    • Introduce a database sharding system on top of PostgreSQL for transactions data
    • Introduced distributed trading using OpenTelemetry and Jaeger
  • Product development
    • Produced a MVP in less than 3 months to convert DeFi transactions into taxable events
    • Lead a small team to launch the DeFi product in 3 months, which lead to an increase in revenue
    • Conception and development of a new DeFi portfolio product
  • Security
    • Maintain least privileges IAM policies
    • Oversee tasks related to PCI DSS compliance
    • Give security training to web developers
  • Finance
    • Develop market monitoring tools using Python, Typescript and Next.js
    • Conceive and implement trading strategies using Python
Website: https://www.pafin.com
From June 2021
Co-Founder at Blue Ape Co., Ltd. – Tokyo, Japan
  • Cryptocurrencies trading strategies research
  • Cryptocurrencies trading software development and operation
  • Trade performance analysis
  • Accounting
Website: https://www.blueape.fi
May 2018 to Mar. 2019
Head of IT Architecture at TableCheck Inc. – Tokyo, Japan
  • Leading the infrastructure team to make the infrastructure more reliable and more adaptable in order to evolve faster.
  • Leading the development effort to move away from a monolithic application towards microservices using Elixir, Scala and Kafka.
  • Setting up the infrastructure in China on AWS.
  • Setting up a new infrastructure to deploy microservices on AWS using Kubernetes.
  • Overseeing tasks related to Security and PCI DSS.
  • Acting as Data Protection Officer and leading the Information Security Governance Committee.
  • Training of interns in both Infrastructure and Development teams. Elected MVP of the company for the second year in a row.
Elected MVP of the company for the second year in a row.
Website: https://corp.tablecheck.com
July 2016 to May 2018
Systems Engineer at TableCheck Inc. (previously KK Vesper) – Tokyo, Japan
  • Replacing the legacy infrastructure by a new one based on AWS ASG and AWS VPC to ensure greater reliability and security.
  • Deploying a monitoring infrastructure.
  • Solving problems allowing services to scale past their past limits.
  • Providing infrastructure resources for the new projects.
  • Working on achieving PCI DSS compliance.
  • Starting the effort to move from a monolithic application towards microservices.
Elected MVP of the company for 2017.
Website: https://corp.tablecheck.com
Aug. 2014 to July 2016
Server Engineer / DevOps at Wizcorp – Tokyo, Japan
  • Project leader on the AerisCloud project.
    AerisCloud is a tool written in Python used to manage development environment and production servers with Ansible and Vagrant.
  • Full Stack Developer and Project leader on an Ads retargeting platform.
    Single Page Application written in AngularJS using an API written in PHP with Silex.
    The project is heavily using the Facebook Marketing API and the Facebook Graph API.
    All the infrastructure is running on Amazon Web Services.
Website: https://www.wizcorp.jp
Feb. to July 2014
6-month internship at Wizcorp – Tokyo, Japan
System Administrator (Ansible, Vagrant, Mesos, Marathon, Node.js, ...).
Website: https://www.wizcorp.jp
Feb. 2013 to Dec. 2013
Software Engineer at TaDaweb – Esch-sur-Alzette, Luxembourg
Remote work as a Software Engineer (Node.js, MongoDB, AngularJS).
Website: https://www.tadaweb.com
Sept. 2012 to Feb. 2013
6-month internship at TaDaweb – Esch-sur-Alzette, Luxembourg
System Administrator (Fabric, Node.js, Redis, MongoDB, MySQL, RabbitMQ, BIND, Postfix, Dovecot, ...).
Website: https://www.tadaweb.com
Aug. 2011 to May 2014
HostYourCreeper : Minecraft server hosting provider
Web development (PHP, CSS, jQuery, symfony, Doctrine), Virtualization (Xen), Monitoring (Nagios, pnp4nagios), Automation (Puppet)
Jan. 2011 to Oct. 2014
Self-employee: Auto-Entrepreneur status in France
PHP, CSS, jQuery, symfony, Doctrine, Node.js, MongoDB, Redis.

Publication

October 2015
MariaDB Essentials, Packt Publishing

Education

2011 - 2014
Master's degree in Computer Science at the University of Technology of Compiègne, France
Website: https://www.utc.fr
2009 - 2011
DEUTEC - University of Technology of Compiègne, France
Website: https://www.utc.fr
2006 - 2009
High school - Vernon, France
French scientific Baccalauréat with Honors (speciality mathematics and engineering science).

Personal experience

Sept. 2011 to Feb. 2014
System Administrator for the association SiMDE (management of student organisation's computers) at the UTC.
Lead developer for the new version of Portail des Associations et de la Vie Etudiante.
President from March 2013 to February 2014.
2007 to 2011
System administrator and developer on several gaming servers.
My main goals were to maintain the servers up and running with several thousands of players connected simultaneously, to develop and maintain the websites, and to improve the game engine.
Website creation (PHP, CSS, jQuery, Zend Frameworks, symfony), server administration (Debian), C++ development.

Languages

French
Native.
English
Professional working proficiency. TOEIC: 935/990.
Japanese
Limited working proficiency.
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