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Hi, I'm Nate

Nate Crisler

Senior MultiCloud Security Engineer (DevSecOps) at Genesys

I am a passionate DevOps/Security Engineer with 8+ years of experience in designing and building automated solutions. My expertise lies in strengthening security posture through an adversarial mindset and adherence to security best practices, improving observability, and reducing service downtime. I take a tailored approach to each project, crafting solutions that fit the specific needs and requirements of the business. I have a proven track record of successfully creating and implementing solutions, controls, and programs in an enterprise environment. Furthermore, I have experience working in an Agile environment and am knowledgeable in the Scrum framework. I am a quick learner and thrive in challenging environments.

Leadership
Team Work
Hard Working

Skills

Kubernetes
Kubernetes

Capable of deploying, managing application on Kubernetes. Experienced in writing Kubernetes controllers for CRDs.

Docker
Docker

Write most of the programs as dockerized container. Experienced with multi-stage, multi-arch build process.

Cloud Computing
Cloud Computing

Worked with most of the major clouds such as GCP, AWS, Azure etc.

Azure DevOps
Azure DevOps

Experienced with Azure DevOps. CI/CD, pipeline, etc.

Github Actions
Github Actions

Experienced with Github Actions. CI/CD, pipeline, etc.

Git
Git

Experienced with git-based development. Mostly, use Github. Also, have experience in working with GitLab.

HashiCorp Stack
HashiCorp Stack

Experienced with Terraform, Consul, Vault, Nomad etc. Also, have experience in writing custom Terraform providers.

Splunk
Splunk

Experienced with Splunk. Dashboards, alerts, reports, etc. Also, have experience in writing Splunk custom apps.

Grafana Stack
Grafana Stack

Experienced with Grafana, Loki, Tempo, etc. Also, have experience in writing Grafana custom plugins.

Prometheus
Prometheus

Capable of setup, configure Prometheus metrics. Experienced with PromQL, AlertManager. Also, experienced with writing metric exporters.

Ansible
Ansible

Experienced with Ansible. Playbook writing, role writing, and custom module writing.

Go Development
Go Development

Using as the main language for professional development. Capable of writing scalable, testable, and maintainable program.

Python
Python

Capable of writing scalable, testable, and maintainable program. Experienced with Python 2 and 3.

Linux
Linux

Using as the main operating system. Capable of writing bash/shell scripts.

Agile Development
Agile Development

Experienced with Agile development. Mostly, use Scrum.

ITIL
ITIL

Experienced with ITILv3. Mostly, use ITILv3 for ITSM.

PagerDuty
PagerDuty

Experienced with PagerDuty. Incident management, alerting, etc.

Experiences

1
Lead Engineer - Owner
.nu11.info

April 2008 - Present, PNW (Remote)

nu11.info is a website that focuse of level-setting knownledge in the infosec and automation space. This is accomplised though knowledge sharing. Focused on SIEM, Cloud_Native techologies, Automation and Security best-practices

Responsibilities:
  • Design and develop Splunk Apps and integrations
  • Building Telemetry Monnitoring stack (Splunk, Prometheus, Grafana, Loki, DataDog, Sensu)
  • Automation (IaC)
  • Deploying via CI/CD as well as manual deployments using Ansible, Terraform, and Helm, Bash, Python
  • CI/CD Pipelines (Azure DevOps, GitLab, Jenkins, GitHub Actions)
Senior MultiCloud Security Engineer
Genesys Cloud Services (Genesys Telecommunications)

November 2021 - October 2022, (Remote)

Genesys is a leader for omnichannel customer experience & contact center solutions, trusted by 10000+ companies in over 100 countries.

Responsibilities:
  • Threat Hunting in MultiCloud (AWS, Azure, GCP)
  • Security Monitoring in AWS, Azure, GCP
  • Develop and maintain Security Monitoring tools
  • Develop automation to support Security Monitoring, systems hardening for AWS, Azure, GCP per business and compliance requirements
  • Hasicorp products (Vault, Terraform, Consul, Vagrant, Packer, Nomad)
  • Develop solutions for Security Monitoring, Threat Hunting, Threat Mitigation, Threat Analysis and Incident Response, Vulnerability Management in AWS, Azure, GCP
  • Engineered and facilitated third party Pentest for PCI Audit across multiple cloud platforms (AWS, Azure, GCP) and on-prem environments (VMware, Linux, Windows) and remediated findings
  • Created and maintained vulnerability management for multiple applications and services.
  • Developed and implemented security best practices for multiple applications and services.
  • Worked with geographically diverse teams and stakeholders to implement security best practices and ensure compliance with security policies and standards.
  • Demonstrated ability to work collaboratively or independently to accomplish high profile or time-sensitive tasks.
  • Own & operate layers of security infrastructure tools, like SIEM, UEBA, EDR, FIM, WAF, IDS/IPS, vulnerability management, as well as penetration testing tools;
  • Respond to/automate response to alarms, alerts, and notifications from the toolset;
  • Provide expert guidance to DevOps teams to securely implement customer solutions;
  • Define, review, and document secure architectures, policies, and procedures throughout the MultiCloud organization;
  • Consult, support and advise the Audit & Compliance team;
  • Research future and existing threats to the MultiCloud environments and provide expert direction to mitigate and/or remediate them;
  • Support the Security Operations Center as ’next tier’ support;
  • Respond to security incidents as required.
2
3
Senior Site Reliability Engineer
KAR Global.

Apr 2019 - Nov 2021, Carmel, Indiana (Remote)

The leading global digital platform offering end-to-end solutions for the automotive wholesale industry

Responsibilities:
  • Created and maintained infrastructure as code using Hashicorp products (Vault, Terraform, Consul, Vagrant, Packer, Nomad), stored code in GitHub
  • Migrated old applications to AWS, Openshift, and Kubernetes
  • Modernized applications to use AWS services (EC2, S3, RDS, Lambda, CloudWatch, CloudTrail, CloudFormation, IAM, Route53, etc.)
  • Developed CI/CD pipelines (Azure DevOps)
  • Automated the deployment of applications and services
  • Documented and provided feedback to the business
  • Designed and implemented updates to strengthen security posture, improve observability, and software maintainability
  • Developed and maintained CI/CD pipelines for multiple applications and services
  • Cross-functional team member supporting the development of new applications and services
  • Developed and maintained automation for multiple applications and services
  • Developed and implemented solutions gaining visibility into the interworkings of multiple applications and services located in multiple cloud platforms and on-prem environments.
Genesys Cloud Services (Genesys Telecommunications)

March 2014 - April 2019, (Remote)

Leader for omnichannel customer experience & contact center solutions, trusted by 10000+ companies in over 100 countries.

Senior Cloud Security and Telemetry Engineer

October 2017 - April 2019

  • Managed and Architected SIEM solution (Splunk) that supports 10000+ customer in 100+ countries for both PCI and SOC2 compliance
  • Lead the design, development, and implementation of our Splunk architecture; including hardware, software, networking, and storage.
  • Manage and configure Splunk Enterprise components, apps, and add-ons.
  • Created and maintained Splunk Enterprise Security correlation searches, reports, dashboards, and lookups
  • Monitored and analyzed data sources for security purposes, including but not limited to web proxies, firewalls, antivirus, and Windows event logs
  • Investigated and responded to security incidents, including malware outbreaks and data breaches
  • Configured and maintained the Splunk Universal Forwarder on a variety of operating systems
  • Wrote custom Splunk queries and scripts to extract data from a variety of sources
  • Developed and implemented Splunk best practices, including indexing, retention, and search optimization
  • Managed Splunk licensing, user accounts, and app deployments
  • Implemented and managed security controls in Splunk, including alerts, reports, and dashboards
Principal Telemetry Engineer

March 2014 - December 2017

  • Led the design, development, and implementation of a Splunk Enterprise solution for a large organization
  • Defined Splunk architecture, designed Splunk deployment topology, and implemented Splunk best practices
  • Integrated Splunk with a variety of systems and data sources, including security, networking, and storage systems
  • Automated Splunk data collection and reporting using custom scripts and applications
  • Managed Splunk user accounts, roles, and permissions
  • Created custom Splunk dashboards and reports for various stakeholders
  • Monitored Splunk performance and capacity, and performed Splunk upgrades and maintenance
4
5
Network Operations Specialist Tier 3 - Team Lead
Lightbound

September 2011 - April 2014, Indianapolis, IN

Leading provider of cloud, colocation, network, and managed services in the Midwest market

Responsibilities:
  • Monitor and respond to network and system outages and alerts, troubleshoot and resolve issues in a timely manner
  • Manage network operations team, ensuring that all tasks are completed in a timely and efficient manner - Oversee network administration and maintenance tasks, including but not limited to; - IP address management - DNS management - Routing and switching - Firewall configuration and management - VPN configuration and management
  • Assist in the development and implementation of network security policies and procedures
  • Monitor network traffic and performance, generate reports, dashboard and alerts as needed
  • Stay up-to-date on network technologies and trends
  • Building Telemetry Monitoring stack
  • Built automation to itentify issues and provision replacement network hardware in a timely manner saving hours of downtime
  • Managed a network of over 1500 devices
  • Supported an asterisk PBX
  • Provided support at the Physical, Data link, and Network layers
  • Made various DNS changes ( A, CNAME, SPF, MX, etc….)
  • Troubleshot various circuit/network issues.
  • Opened up tickets with telecom providers and customers to remediate issues.

Education

Western Governors University
2011-2015
Bachelor of Applied Science (B.A.Sc.) Network Security