Walter Justet
Verified Expert in Engineering
PCI DSS Developer
Walter is an experienced engineer who has held various positions throughout his career. He has more than a decade of experience as a cloud infrastructure manager (AWS, Azure, GCP), DevOps engineer (a variety of automation technologies), Linux and Windows Servers and Network administrator, and security analyst in network devices (PCI DSS and HIPAA). Walter is also an in-person and remote learning planner and teacher.
Portfolio
Experience
Availability
Preferred Environment
Amazon Web Services (AWS), Linux, Windows, Git, CircleCI, Jenkins Pipeline, Jenkins Job DSL, Bitbucket Pipelines, Amazon Elastic Container Service (Amazon ECS), Amazon EKS
The most amazing...
...job was conducting and sustaining the PCI DSS compliance for an ATM network for years, with numerous periodic tasks and PCI DSS version changes in the middle.
Work Experience
Information Security, and Computers Architecture and Operating Systems Professor
National Technological University - Santa Fe Regional Faculty
- Designed the course plan, created the material, and taught an information security course in the career of Higher Technician in Infomation Technology.
- Designed the course plan, created the material, and taught a computer architecture and operating systems course in the career of Higher Technician in Infomation Technology.
- Created and corrected exams and practical assessments.
DevOps Engineer
POINT380
- Migrated the infrastructure from Linode to AWS Elastic Beanstalk stacks.
- Deployed new infrastructure as code using Terraform creating reusable modules for future applications.
- Created CI/CD pipelines for application deployment to multiple environments using CircleCI.
Data Center Sysadmin and Cloud Architect
SoliSYSTEMS
- Elaborated and deployed a PCI DSS report on compliance for an ATM network.
- Designed and implemented a Windows Server failover cluster solution for real-time scheduling and monitoring at a car factory.
- Migrated a colocation center with more than 20 servers to AWS.
- Deployed multi-tier applications to AWS ECS with AWS ALB, AWS API Gateway, and Auto Scaling.
- Designed and supported multiple AWS solutions for Solisystem's clients.
System Administrator and Cloud Architect
Sitejabber
- Implemented monitoring and alert systems using Monit and AWS CloudWatch with notifications to mail and Slack channels to reduce system downtime.
- Designed and deployed a CI/CD pipeline using Jenkins and Ansible.
- Designed and implemented HA solution with AWS Load Balancer and Autoscaling groups.
DevOps Engineer
Order140 Inc
- Implemented Jenkins pipelines for CI/CD of multiple applications and environments.
- Created the infrastructure as code using Terraform.
- Designed and deployed autoscaling policies for high demand periods of the applications using locust.io load testing framework.
DevOps Engineer
Spine Media
- Maintained AWS infrastructure using EC2 instances, RDS cluster, AWS ALB, OpsWorks, and IAM.
- Deployed a Kubernetes environment based on AWS EKS using Jenkins for CI/CD provisioning.
- Created autoscaling with automatic deployment to a WordPress environment using AWS OpsWorks.
DevOps Engineer
Transparent Health Group
- Implemented load-balanced public (web) and private (app) layers.
- Implemented secured VPC with VPN access using AWS Client VPN and OpenVPN servers.
- Reviewed application and infrastructure requirements for HIPAA compliance.
Network System Administrator
National Technological University - Santa Fe Regional Faculty
- Served as the director of the communications center, in charge of the network infrastructure at UTN - FRSF.
- Configured network devices, including multilayer switches, WAN routers, and proxy servers.
- Handled GNU/Linux and Microsoft Windows operative system administration. Set up and managed network services.
- Oversaw network security auditing, including firewalling and security policies.
Experience
Data Center Migration
After the migration, the infrastructure savings were about 20%, only considering the colocation costs and not hardware acquisition costs. There was also a huge reduction in the time to deploy new services or projects from days to hours.
IaC and CI/CD Implementation
Implemented a CI/CD pipeline using CircleCI, reducing the deployment times by half.
PCI DSS Compliance
This job involved controlling and reporting changes to the requirements from version to version and applying changes to fulfill those that did not comply or were new.
Education
Master of Arts Degree in Business Administration
Universidad Nacional del Litoral - Santa Fe, Argentina
Bachelor's Degree in Information Systems Engineering
Universidad Tecnologica Nacional - Santa Fe, Argentina
Certifications
Certified Rancher Operator: Level One
Rancher Labs
AWS Certified Solutions Architect Associate
AWS
Skills
Libraries/APIs
Jenkins Pipeline, Jenkins Job DSL
Tools
Git, CircleCI, Amazon Elastic Container Service (Amazon ECS), Amazon EKS, Atlassian Suite, Apache, VPN, Terraform, Amazon CloudWatch, Jenkins, Bitbucket, Slack, AWS OpsWorks, OpenVPN, Monit, Ansible, GitHub
Languages
Bash
Platforms
Amazon Web Services (AWS), Linux, Windows, Windows Server, Kubernetes, AWS ALB, Rancher, AWS Elastic Beanstalk, Docker, WordPress, Linode, Amazon EC2, Azure
Frameworks
Locust
Paradigms
DevOps, HIPAA Compliance, Continuous Integration (CI), Continuous Delivery (CD)
Storage
MySQL, Amazon S3 (AWS S3)
Other
Networks, University Teaching, SMTP, POP, IMAP, DNS, Dynamic Host Configuration Protocol (DHCP), Linux Server Administration, Linux Server Configuration, Infrastructure, IT Infrastructure, AWS Certified Solution Architect, PCI DSS, AWS Cloud Architecture, Cisco, Hardware, Security, Relational Database Services (RDS), Infrastructure as Code (IaC), CI/CD Pipelines, Windows System Administration, Network Engineering, Firewalls, Bitbucket Pipelines, Information Systems, Operating Systems, Business Administration, Finance, Antivirus Software, Anti-spam Protection, HTTP, WAN, Identity & Access Management (IAM), Cloud Infrastructure, Data Center Management, Data Center Migration
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