The Activity Exchange is now Evidation Health

In order to accelerate progress towards a digital health enabled future, we've joined forces with GE Ventures and Stanford Healthcare to form Evidation Health. Read more about the change below.

Read the Press Release Visit Evidation Health

Join Us

We're always on the lookout for talent. Email us at

Director of Engineering

Required Skills:
  • Ruby/Rails expert, particularly with JRuby/Puma and high-concurrency network driven systems
  • Java expert, particularly with scalable event driven systems
  • Experience with MySQL, Postgres, MongoDB, Redis and Memcached

Familiar with:
  • Heroku, AWS, and capable of setting up VPCs and virtual machines
  • Github, continuous deployment, and an agile framework
  • RabbitMQ and event queues
  • OAUTH, PUSH Servers (iOS and Android), and PubSub architectures
  • DNS configuration, network routes, Google Apps, SMTP, etc...


Required Skills:
  • Linux administration (network configuration, DNS, VPC)
  • Databases experience (SQL)
  • Scripting language (bash, python, perl, ruby)

Familiar with:
  • Cloud (AWS)
  • NoSQL datastores : hbase/mongodb
  • Hadoop and other big data tools
  • Cluster management (cloudera, etc)

Web Engineer

Required Skills:
  • A degree in Computer Science/related field or equivalent work experience
  • Solid experience creating web applications using Javascript and Node
  • Familiarity with Angular and/or other client-side Javascript
  • Strong comfortability with Git
  • Familiarity with SQL
  • Experience consuming and/or creating REST APIs
  • Eye for pixel-perfect design (when something looks a bit off, you can tell)

Nice to have:
  • Some experience with mobile application development or eagerness to learn
  • Familiarity with Ruby on Rails
  • Polyglot, constantly learning new languages/technologies