Greg Burton Email & Phone Number

Scottsdale, Az, Us

Scottsdale, Az, Us

- I lead a sub-team within the Site Reliability organization that focuses on monitoring/observability systems and access management systems.- Designed and implemented a complete overhaul of access management in product systems. My team replaced the patchwork of manual scripts that had to be run to onboard/offboard users with a completely automated system that allows managers to request access through ServiceNow and get their access within minutes via IdentityNow. Impact: we had a system that wasted a large fraction SRE's time on low-value grunt work, and our user base hated the process and found it slow and confusing. Now SRE is not involved at all anymore, and our user base gets their access within minutes of requesting/approving it. As part of this, we wrote a Terraform provider for IdentityNow to ensure that we were adhering to the principle of Infrastructure as code (IaC) rather than doing hundreds of actions in a UI that no one will remember later.

Scottsdale, Az, Us

- Founded the Kubernetes-based platform at Axon. I have years of experience working on Kubernetes through a few generations of cluster management (the "hard way", Rancher-managed, and now moving towards AKS).- Led an extremely large data migration from one cloud to another (~10 PB moved from AWS to Azure). Nothing could be lost. I wrote the software to transfer the data and keep a careful audit history. I then choreographed a gradual, zero downtime cutover that end users never noticed.- Ran the weekly operational review for 1.5 years to relentlessly tackle issues before they accumulated into piles of tech debt. In practice, I spent a lot of time debugging and researching thorny issues with tight fellowship of devops-minded engineers from across the product organization. I also was the point person during many high-profile incidents, so I have a strong record of working effectively under pressure.- Worked on dozens of small and medium projects in all areas of Axon infrastructure. The legacy stack is long-lived VMs in AWS/Azure that are provisioned with Terraform and managed by Puppet. The Kubernetes stack is Terraform-based and managed by a combination of Rancher and cloud-init, with workloads deployed into the cluster using Helm.

Vancouver, Bc, Ca

Tech stack: NodeJS, Javascript, CoffeeScript, MongoDB, NSQ, HTML/CSS, Backbone, Handlebars, Marathon, Mesos, DockerI am committed to having a balanced skill set, and I spread my time among front-end, back-end, and operational concerns. In taking this role, I welcomed the opportunity to move outside of the Java ecosystem (where I worked in previous roles) to gain an understanding of the relative strengths and weaknesses of the NodeJS ecosystem. I also welcomed the chance to work on a small team building a new SaaS product while trying to find a market fit for it. Some of my projects and responsibilities:- Implemented dashboard page to organize site audits for existing users and demonstrate value to new users- Designed system to deliver audit insights via email, increasing engagement with app and reducing churn- Tuned MongoDB usage to be more stable and efficient (index coverage, slow queries, locking behavior)- Improved CPU and I/O bottlenecks in backend AJAX endpoints to make user experience faster- Built relationships across the organization to bring technical and non-technical ideas together into cohesive plans- Worked closely with Business Intelligence, UX, Quality Assurance, Marketing, and Customer Support teams

Transferred to site content organization in September 2014Shortly after presenting a case study about my experiences as a developer trying to scale and stabilize legacy codebases at the Velocity Conference, I learned of an initiative in our site content organization to develop a proof-of-concept system that would help set the architectural direction for the rest of Orbitz. I actively sought to join that effort, as I felt well-positioned to contribute because of the perspective I had gained in supporting and refactoring the software stack of the existing site.I worked on breaking down large, unwieldy codebases into Spring Boot microservices deployed into Docker containers. We emphasized the use of open-source components, with minimal customization and in-house components. A core requirement was continuous delivery (100% automation between code commits and production deployment). For monitoring, we used Dropwizard and Graphite. For logging, we used the ELK stack (Kibana/ElasticSearch/LogStash). For service discovery, we used Consul. I was central to the development effort and took a leadership role in documenting, teaching, and evangelizing the architecture to the rest of Orbitz. The goal was to give other organizations enough of a starting point that they could justify major leaps forward in the technologies they use.Technologies I work with: Java, Spring, Spring Boot, Git, Jenkins, Dropwizard, Docker, Gradle, Mesos, Marathon, Agile, Jira, Graphite, Python, Groovy, REST, Consul, Solr, MongoDB, Logstash, ElasticSearch, Kibana, SQL, Oracle, Linux, Artifactory, AnsibleI wrote the blog post below to give a high level overview of our architectural vision.

Worked on Hotel Infrastructure and Platform team from January 2013 to September 2014I worked on a team of developers that is responsible for ensuring that Orbitz' hotel platform scales with increasing demand for capacity from our various channels, including consumer, white label, and meta-search. This involved a lot of backend Java development, including new features and refactoring existing code to make it more efficient and minimize technical debt. On a rotating basis, I provided 24-hour production support when I was "on call", supporting business critical hosts that are central to performing hotel searches and bookings. My work as a developer is closely aligned with our Operations teams, so I rely heavily on cross-team collaboration to complete my investigations and make optimal design choices, not just in terms of functional acceptance criteria, but also in terms of impact on performance and capacity. My colleague and I presented a case study at the Velocity 2014 Conference in Santa Clara, CA. We described how our team led a cultural shift at Orbitz toward greater integration of operations and feature development. See the video below.

Worked in E-marketing team from June 2011 through December 2012I work on a team of developers that supports the search-engine marketing (SEM) efforts of Orbitz and other websites owned by Orbitz Worldwide. I contribute to a wide range of activities in our team, from back-end application development (Python, Java), internal UI development (Django, Grails) and large-scale data-warehouse analysis and development (SQL, ETL, Hadoop). I do production support for all of our hosts and deliverables, which operate in a fast-paced, high-volume, 24-hour environment. I work closely with business users on the e-marketing team, maintaining a tight coupling between technical and business stakeholders (we operate in an Agile environment). Our SEM responsibilities include trafficking keywords at scale, measuring return on investment (conversion), and controlling the landing page experience of paid traffic (SEM or otherwise).

Champaign, Il, Us

I developed an agent-based simulation as a class exercise to help students understand the principle of the "Tragedy of the Commons". The simulation worked in a networked environment in which students themselves would be actors in the demonstration. In addition, I introduced considerable complexity to allow students to discover ways in which the tragedy could be avoided through collaboration among one another.Led discussion sections for "Geography of Developing Countries".

Philadelphia, Pa, Us

Developed geographically explicit, routable street network for use in travel demand forecasting in the Philadelphia regionIntegrated open-source road and transit data from Open Street Maps and Google Transit Feed into a transportation modeling software platform. My programming background was helpful in accomplishing repetitive tasks through algorithm design in Python.Tools used: Python, ArcGIS, VISUM, Google Transit Feed, Open Street Maps

Chicago, Illinois, Us

Worked in multi-disciplinary engineering teams to design digital hardware for research and development of software-defined radio applicationsDesigned a circuit board with dual Gigabit Ethernet interfaces, a field-programmable gate array (FPGA), a software-defined radio IC, and a multi-threaded Java user interface to communicate with the boardTools used: Verilog, VHDL, Java, ISE, Mentor

San Jose, Ca, Us

I served as the interface between product design teams and worldwide support network, with product launches as my primary responsibility. I designed, published, and supported high-speed networking applications. I wrote articles and presented my designs to field engineers and customers around the world. I designed and implemented algorithms to eliminate sources of error in high-speed data transmissions, making real-time adjustments for temperature and voltage fluctuations.

San Jose, Ca, Us

Us

Performed qualification testing of RF and digital hardware from age 16 through high school and college years, working part time during school and full-time during summers.

Masters Of Geographic Information Science

Bs, Computer Engineering