Josh Souza

Lead Site Reliability Engineer

Greenhouse Software

July 2024 - Present

Managing and optimizing cloud infrastructure that supports our software as a service solution for making hiring people an awesome experience for everyone.

• Built Kubernetes Practical interview environment for hands-on troubleshooting interviews
• Championed and delivered a globally distributed Kafka-based message communication system
• Provided technical guidance and knowledge sharing to enhance team productivity

Senior Site Reliability Engineer II

Greenhouse Software

November 2016 - July 2024

Leading cloud infrastructure transformation and Kubernetes adoption across the platform.

• Migrated enterprise infrastructure to Kubernetes from Mesosphere
• Automated and unified DNS management systems
• Led Terraform adoption to replace Ansible across the organization
• Designed automated node rotation for non-disruptive service updates
• Delivered Karafka/OpenSearch platform for new product features
• Transitioned Solr deployment from manual management to Kubernetes
• Implemented Kubernetes operators for Strimzi Kafka, KubeDB, and Apache Solr
• Delivered edge routing solution to improve global performance

DevOps Developer

ProKarma

Technology consulting & DevOps CoE

December 2015 - October 2016

Implementing DevOps and CI/CD best practices to enable automated build, release, and scaling at cloud scale.

• Designed Jenkins-centric Dockerized CI/CD pipelines with cutting-edge containerization
• Created dockerized Angular training portal integrating Jenkins, Git, AWS ECS, and Docker
• Established Puppet module development coding standards
• Implemented full CI/CD tooling for customer deployments
• Developed 'generator-puppetskel' for module scaffolding

Senior Developer

Pearson Education

Online learning & textbook publishing

June 2014 - November 2015

Automated build, test, and release tools with cross-platform language expertise (Puppet, Ruby, Python, Java).

• Retrofitted in-house tools to use community libraries
• Reduced server footprint by analyzing development team infrastructure costs
• Improved Puppet tooling and streamlined system builds
• Implemented Packer for consistent cloud provider builds
• Designed Roles/Profiles supporting hundreds of distinct teams

Senior Developer

ViaWest

Cloud & Managed Services

September 2009 - June 2014

Designed and integrated 60+ software systems across HTML, Java, Ruby, and C#.

• Architected customer support portal from scratch with a single developer
• Streamlined workflows, versioning, and development processes
• Automated software release process supporting existing workflows
• Founded local "Sencha Users Group" for community engagement

Solutions Engineer

ViaWest

Cloud & Managed Services

February 2008 - September 2009

Server-level support and diagnostics for data center maintenance.