Jess Mahan
Verified Expert in Engineering
DevOps Engineer and Developer
Huntington Beach, CA, United States
Toptal member since March 20, 2018
Jess is a veteran engineer who is particularly skilled in Go (5 years), C (15 years), and Python (10 years). He is also experienced in site reliability development and DevOps. He is a professional with exceptional communication skills and has experience working freelance. Jess joined Toptal to find cutting-edge projects and talented people to work with.
Portfolio
Experience
- C - 15 years
- Bash - 15 years
- Linux RHEL/CentOS - 15 years
- Docker - 10 years
- Python - 10 years
- Go - 8 years
- Terraform - 8 years
- Kubernetes - 7 years
Preferred Environment
Amazon Web Services (AWS), Google Cloud
The most amazing...
...thing I've done was build one of the first private clouds, complete with the infrastructure as code and virtual load balancing.
Work Experience
DevOps Engineer | Staff Software Engineer
Alpha Zero One LLC
- Contributed to platform development and automation using the Go programming language.
- Migrated legacy workload to Kubernetes, enabling autoscaling, using site reliability engineering (SRE).
- Set up and maintained CI/CD pipelines in Jenkins and GitLab.
Site Reliability Engineer
Katch LLC
- Designed and implemented the AWS infrastructure using Terraform.
- Developed the back end in Go.
- Built the infrastructure with Ansible.
- Implemented container management with Docker.
- Managed the CI/CD pipeline with Jenkins.
Information Security Engineer
Warner Bros.
- Developed an intrusion analysis with Dell Secureworks.
- Managed a centralized logging environment with Syslog-ng and Rsyslog.
- Implemented a Kibana (ELK) environment for security event analysis.
- Built a custom indexing engine in Go for a shipment to Kibana.
- Created custom DNS NetFlow style tools in C for real-time and historical analysis of DNS queries and flow with a REST API microservice for queries.
Senior DevOps Engineer
Warner Bros.
- Managed all Tomcat 6/7 and GlassFish servers.
- Implemented cloud orchestration via Puppet.
- Managed the CI/CD pipelines with Jenkins and the DNS.
- Migrated the entire on-premise environment (over 5,000 hosts) to AWS.
Experience
SecureWorks SOAP API in Go
https://github.com/alienrobotarmy/secureWorksCTunnel
https://github.com/alienrobotarmy/ctunnelBash Threads
https://github.com/alienrobotarmy/bashthreadsCertifications
AWS Certified Solutions Architect Associate
AWS
GIAC Certified Intrusion Analyst (GCIA)
GIAC
Skills
Libraries/APIs
POSIX
Tools
Exim4, NGINX, Iptables, Apache, Amazon Elastic Container Service (ECS), Jenkins, AWS ELB, Terraform, AWS CloudFormation, Grafana, VMware, Puppet, Apache Tomcat, Syslog-ng, Syslog, Rsyslog, Ansible, Google Stackdriver, Google Compute Engine (GCE), Google Kubernetes Engine (GKE), Amazon EKS
Languages
Python, Bash, Go, C, PHP
Paradigms
DevOps
Platforms
LAMP, Linux RHEL/CentOS, Debian Linux, Ubuntu Linux, Linux, Google Cloud Platform (GCP), Kubernetes, Amazon EC2, Docker, Amazon Web Services (AWS)
Storage
MySQL, Amazon S3 (AWS S3), Google Cloud, Google Cloud SQL, Google Cloud Storage
Other
System Administration, Qmail, Servers, DNS, Domain Name System (DNS), BIND, PowerDNS, BIND9, Amazon Route 53, HAProxy, CI/CD Pipelines, Dovecot, Site Reliability Engineering (SRE), Slurm Workload Manager, Domain Name System Security Extensions (DNSSEC), GlassFish, Prometheus
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