Glenn Poston, Infrastructure as Code (IaC) Developer in Durham, NC, United States
Glenn Poston

Infrastructure as Code (IaC) Developer in Durham, NC, United States

Member since April 8, 2020
Glenn is a talented professional with expertise combining development and operations stacks. His specialties include DevOps, product support, on-call, and systems reliability roles. His work has helped large companies such as IBM improve their systems, automate architecture, and significantly reduce costs. Glenn loves technology and considers himself a generalist. His passion lies in driving efficiencies that allow changes to roll from conception to customer use as quickly as possible.
Glenn is now available for hire

Portfolio

Experience

Location

Durham, NC, United States

Availability

Part-time

Preferred Environment

Amazon Web Services (AWS), New Relic, Secure Automated Lending Technology (SALT), Ruby on Rails (RoR), Ruby, Python, Django, Datadog, Sentry, CircleCI, Jenkins, Chef, Puppet, Terraform

The most amazing...

...technical accomplishment I've delivered is a fully automated clone of RDS that I built on EC2 with Terraform (RDS was not HIPAA compliant at the time).

Employment

  • Freelance

    2019 - PRESENT
    Absolute Integrity, LLC.
    • Introduced autoscaling in Kubernetes using Horizontal Pod Autoscaler with custom metrics.
    • Built infrastructure and CI pipelines for several startups using AWS ECS, AWS Fargate, AWS Cognito, AWS Beanstalk, and AWS Code Deploy.
    • Assisted with setting up observability/metrics and an error notification framework for a number of startups using AWS CloudWatch logs and metrics, Sentry, and Slack Integrations.
    • Developed a passwordless authentication and permissioning service using the Django Rest framework, Django Permissions, Django-guardian, AWS Cognito, and AWS Lambda.
    Technologies: Amazon Web Services (AWS), Django, Amazon Cognito, Serverless, Terraform
  • Manager of Systems Reliability and DevOps

    2015 - 2020
    ClearCare
    • Ran the agile project planning and prioritization, and reported to leadership for a team of five.
    • Managed vendor relationships (AWS, New Relic, Datadog).
    • Supported infrastructure for an application with over 2000 B2B customers seeing more than 100,000 requests per minute.
    • Introduced 'infrastructure as code' and migrated all infrastructure to be managed by Terraform.
    • Took the company from seeing weekly service interruptions to 99.98% uptime.
    • Migrated the Django web-stack to run on Docker under AWS ECS.
    • Reduced infrastructure costs from $100,000/month to $50,000/month by incorporating AWS Spot instances, autoscaling, and right-sizing a number of over-provisioned instances.
    • Introduced HIPAA security standards and worked with external auditors to achieve HIPAA's HITRUST certification.
    Technologies: Amazon Web Services (AWS), Docker, Amazon ECS (Amazon Elastic Container Service), Jenkins, Secure Automated Lending Technology (SALT), Terraform
  • DevOps Team Lead

    2013 - 2020
    Genesys (Previously Interactive Intelligence)
    • Led the infrastructure automation and CI side of the engineering department.
    • Supported the build-out of a greenfield project to migrate the existing primary revenue product (requiring on-site installation) to a SaaS-based platform.
    • Oversaw the agile project planning, prioritization, and work assignment for a team of three.
    Technologies: Amazon Web Services (AWS), Jenkins, Ansible, Puppet, AWS CloudFormation
  • Software Engineer - Systems Engineering

    2011 - 2013
    iContact
    • Built out infrastructure management automation using Puppet.
    • Developed a CI workflow that moved the company from quarterly, all-hands, overnight deployments to weekly push-button deployments.
    • Wrote a Jira plugin that allowed developers to push a button in a Jira ticket to build out an environment and deploy code branches associated with the ticket. These environments were used for QA and would spin down when the Jira ticket was closed.
    Technologies: Puppet, KVM, Jenkins, Ruby on Rails (RoR), Ruby
  • Software Engineer

    2008 - 2011
    IBM
    • Developed web-based tooling for internal support teams.
    • Assisted with the outbuilding and maintenance of data center hardware.
    • Led the migration of the team development environment from Windows to Linux.
    Technologies: Java, Ruby on Rails (RoR), Ruby

Experience

  • Passwordless Authentication

    Built a passwordless authentication framework for a healthcare startup using AWS Cognito, Lambda functions, Django Rest Framework, Django Permissions, and Django-Guardian. The passwordless authentication framework allowed end users to log in with their phone number and receive a temporary token via SMS they can use to authenticate. This authentication solution increased security while preventing 'forgot password' requests to support.

  • Autoscaling Kubernetes Pods

    Built out a custom metrics pipeline using Prometheus and Horizontal Pod Autoscaler for a fintech startup. This allowed the application to automatically scale up based on request counts to handle spikes (particularly in sign-ups) while keeping the overall infrastructure costs low.

Skills

  • Frameworks

    AWS HA, Django, Ruby on Rails (RoR)
  • Tools

    AWS IAM, Amazon EBS, SaltStack, Terraform, Amazon ECS (Amazon Elastic Container Service), Vagrant, Puppet, Chef, Jenkins, CircleCI, Sentry, Amazon Cognito, AWS CloudFormation, Ansible
  • Paradigms

    Continuous Integration (CI), HIPAA Compliance
  • Platforms

    Docker, Amazon Web Services (AWS), New Relic, KVM, Kubernetes
  • Storage

    Amazon S3 (AWS S3), Datadog
  • Other

    Infrastructure as Code (IaC), Secure Automated Lending Technology (SALT), Serverless
  • Languages

    Java, Python, Ruby

Education

  • Bachelor's Degree in Computer Science
    2000 - 2008
    North Carolina State University - Raleigh, North Carolina, USA

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