Jonathan Bethune

Tokyo, Japan

Member since February 13, 2018

Jonathan is an experienced DevOps engineer based in Tokyo and New York. He's worked for a number of startups building the infrastructure and improving security. He's extremely knowledgeable about machine learning, data analysis, infrastructure development, and data layer optimization. One of his best qualities is his knack for quickly learning new things which is why he landed in DevOps because it is the best field for trying new technologies.

Jonathan is now available for hire

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Portfolio

Instaclustr
Cassandra, Kafka, Spark, Java
CloudPassage
Chef, Ruby, Python, AWS, Rackspace, Redis, Elasticsearch, Cassandra...
Knewton
Java, Python, Scala, AWS, Cassandra

Experience

Cassandra, 7 years
Python, 7 years
Java, 7 years
Apache Kafka, 7 years
Apache ZooKeeper, 6 years
Docker, 4 years
Spark, 3 years
Terraform, 2 years

Availability

Part-time

Preferred Environment

Linux, Git, Python, IntelliJ with Java

The most amazing...

...thing I've done was to automate the software environment (creation/deletion) for a company which saved tens of thousands of dollars—simple but satisfying work.

Employment

Senior Consultant
2018 - PRESENT
Instaclustr
- Developed Instaclustr's PaaS offerings for Cassandra and Spark.
- Helped Instaclustr clients successfully deploy and optimize Apache technologies such as Cassandra, Spark, and Kafka.
Technologies: Cassandra, Kafka, Spark, Java
Senior DevOps Engineer
2015 - 2017
CloudPassage
- Served as a data architect which entailed optimizing the Cassandra data model and tuning multiple Cassandra clusters.
- Solved production outages and created monitoring systems; as an SRE.
- Wrote the infrastructure code in Chef and Terraform to automate deployments, testing, and configuration changes.
- Hardened cloud systems through code auditing, penetration testing, patch management, and enforcing the encryption of data at rest and in transit.
- Created numerous tools and scripts to automate common forensic tasks such as tracking Chef server changes or updating user ACLs.
Technologies: Chef, Ruby, Python, AWS, Rackspace, Redis, Elasticsearch, Cassandra, PostgreSQL, Terraform, Spark, Kubernetes, Docker
Software Engineer
2010 - 2014
Knewton
- Wrote unit and integration tests for Java services.
- Helped develop a student event microservice in Java.
- Created a deployment tool in Python that leveraged AWS API's (Boto library), Chef, and CloudFormation to simplify environment creation.
- Automated test environment creation in AWS and served as an SRE during my tenure as a systems engineer.
- Served as the deployment engineer for Java services and managed the Jenkins servers.
Technologies: Java, Python, Scala, AWS, Cassandra

Experience

Melanippe (Development)
https://github.com/therenegadeoffunk/melanippe
A Cassandra profiling tool that was written in Python. It is a work-in-progress. Currently, all it does is give information about table configuration and schema. It's easier to use than cqlsh or NodeTool and when finished will have more useful features.
Risk vs. Reward: A Guide to Understanding Software Containers (Publication)
https://www.toptal.com/devops/risk-rewards-software-container
Software delivery has come a long way. And, somewhere between the transition from physical media to software containers, we have changed the way we try to manage them. In this article, Toptal Freelance Software Engineer Jonathan Bethune explores how software containers have motivated us to treat servers as more dispensable, and the risks and rewards involved.

Skills

Languages
Python, SQL, Java, R, Ruby, C, Go, Haskell, Clojure, Rust
Frameworks
Spark, Hadoop, Flask, Django
Libraries/APIs
AWS EC2 API
Tools
Terraform, Apache ZooKeeper, CloudFormation, Chef
Platforms
Apache Kafka, AWS EC2, Linux, Docker, Azure, Kubernetes, Rackspace
Storage
Cassandra, Redis, Google Cloud, MongoDB, PostgreSQL, Elasticsearch
Other
Security

Education

Master's degree in Information Technology
2011 - 2014
University of Phoenix - Online
Bachelor of Science degree in English Education
2003 - 2006
New York University - New York, NY, USA

Certifications

Japanese Language Proficiency Adult Fluency Level
FEBRUARY 2017 - PRESENT
The Japan Foundation
Machine Learning
OCTOBER 2016 - PRESENT
Stanford University via Coursera
Cassandra Architect
JUNE 2016 - PRESENT
Datastax