Rahat Zaman

ad3gud@r.postjobfree.com/ 650-***-****

Summary

Well versed in information technology infrastructure engineering with years long hands on experience in cloud orchestration, Kubernetes based Docker container application deployment, configuration management, software development life cycle (SDLC) process, Test-driven Development (TDD), pre-sales and in customer engagement.

Experience:

AWS:

Hands-on experience with AWS services, including EC2 for scalable compute resources, RDS and Aurora for managed relational databases, and IAM for access control.

Implemented AWS CodePipeline for automating the end-to-end software release process, ensuring rapid and reliable delivery.

Azure:

Proficient in managing Linux instances on Azure, optimizing performance, and ensuring high availability.

Implemented and maintained Azure Postgres for scalable and fully managed PostgreSQL databases.

Kubernetes:

Extensive experience in managing containerized applications using Kubernetes for orchestration, scaling, and automated deployment.

Implemented Kubernetes Pods, Services, and Deployments to maintain a scalable and resilient infrastructure.

CI/CD Pipeline:

Implemented Jenkins and CircleCI CI/CD pipelines to automate the build, test, and deployment processes, improving development efficiency and reducing time to market.

Integrated Jenkins with version control systems and other tools for seamless continuous integration and continuous delivery.

Redis:

Implemented and maintained Redis caching solutions for improved application performance and data retrieval.

Monitoring Tools (New Relic and Datadog):

Utilized New Relic and Datadog for real-time monitoring, performance optimization, and proactive issue resolution.

Configured custom dashboards, alerts, and automated responses to ensure system reliability and efficiency.

Employment Experience:

Apple (Contractor)

Systems Engineer: Apple Cloud Service, AI/ML (January 2022-Present)

Managing and scaling distributed systems in a public, private, or hybrid cloud environment.

Automating (acute drive) manual operations and to improve them through repeated iteration.

Working on microservices architecture and container orchestration with Kubernetes.

Working Linux Operating System, standard networking protocols, and components.

Hands-on experience managing large numbers of diverse systems with configuration management or software delivery platforms.

Working on deploying, supporting and monitoring new and existing services, platforms, and application stacks.

Implemented Jenkins pipelines for AI/ML group to implemented Jenkins CI/CD pipelines to automate the build, test, and deployment processes and improving development.

Working on scale testing, disaster recovery, and capacity planning.

Ernst & Young

Assistant Director: Senior DevOps and Infrastructure GigNow (March 2019 – January 2022) - San Jose, CA

Work closely with the Development, security and QA on architecture and technologies.

Research and development of new technologies based on client project pipelines and internal improvement programs.

Provide assistance in the development and maintenance of various system applications: Microsoft Azure and Ruby based Infrastructure as code. Assist in the analysis, design and development of a roadmap and implementation based upon a current vs. future state in a cohesive architecture viewpoint. Well versed in Agile scrum and waterfall development methodology.

Test infrastructure code for various development environments (DEV, SIT, UAT, Integration, Acceptance and QA) and finally deploy in the production.

Planned, designed and created CI/CD pipeline for automatic and efficient build and deployment for all development and production environments.

Upgraded Kubernetes version, GitHub, nginx webserver and ingress-nginx controller versions.

Created unit-test scripts for Kubernetes services. Working with different technology groups within the company to plan, test, apply, implement accessibility, and resource sharing via ServiceNow to manage digital workflow and enterprise operations.

Design, code (ruby and python) and test before creating cloud infrastructure with all the necessary resources.

Worked as Release and Change Management coordinator for production deploy, security, authorization and authentication policy compliance

Hands-on Experience: Microsoft Azure, GCP, AWS, Kubernetes, Docker containers, Ruby (codebase), Concourse, CircleCI, Terraform, Jenkins, Redis, New Relic, PostgreSQL.

Forcepoint (Cyberinc)

Senior Infrastructure Engineer (May 2018 - March 2019) - San Ramon, California

(Cyberinc is a cybersecurity company that protects enterprises from web-based malware attacks)

Orchestrated internal private cloud, managing public cloud environments for application development and deployment using AWS services, Microsoft Azure and Red Hat OpenStack.

Presales engagement with sales team; creating PoC for the product, post- sales customer engagement by providing technical support, whitepaper, and overall deployment strategy.

Created Kubernetes managed docker container cluster environment for application hosting.

Cassandra, Maria DB and MySQL database High Availability using MaxScale and Galera clustering for customer PoC and pre-sales evaluation needs. Experience in benchmarking Cassandra Cluster using Cassandra stress tool. Developed and maintained a framework for configuring, integrating, and testing a set of middleware tools, used to build corporate VMware products and services. Project resulted in continuous management of the private cloud based distributed repositories, allowing automated test-driven synchronization of the integration content.

Designed and implemented adaptive remote testing framework for installation and customization of multi-tenant cloud environments, their integration with distributed data sources.

Created and managed virtual test lab environment for testing enterprise services inside multi cloud infrastructure. Used oVirt Virtualization Management, Proxmox, openLDAP and SAML authentication for ISLA (browser security product).

Used and analyzed data on Kibana, Grafana, ElasticSearch and Graphite and deriving the performance of the products. Stabilizing the servers. Build, administer, and troubleshoot all mission critical environments including Production and development (Stage, Dev, SIT, QA).

Hands-on Experience: AWS, Kubernetes, Docker containers, Python (codebase), Cassandra, MariaDB, MySQL, Puppet,

Red Hat

Dedicated Enterprise Engineer (September 2017 - May 2018) - Sunnyvale, California

This was a resident Red Hat enterprise product consultant role at Walmart Lab premises. The role also prompted an engagement in presales apart from its prominent post sales customer engagement responsibilities.

Red Hat Satellite6 provisioning, architecture, version upgrade and maintaining the best practice.

Patch management coordination for thousands of RHEL physical and virtual hosts.

Mass upgrade of Red Hat Operating System from RHEL6.x to RHEL7. x. Implementation of Red Hat virt-who subscription-based entitlement for thousands of virtual hosts.

PoC engagement for OpenStack and Kubernetes managed OpenShift container projects.

Conducted PoC and implementation of RHEL in-place upgrade for thousands of RHEL6 servers to RHEL7.

Setup PCP and Cockpit monitoring tools. Design and deployment of Kerberos delegation, constrained delegation, troubleshooting Kerberos authentication failure.

Troubleshooting kerberos NTLM authentication failure issues. Coordinated production emergency and upgrade related cases for the client with appropriate Red Hat Inc. back-end support groups. Served as an escalation point for other Systems Administrators, Engineers, and other technology teams in the resolution of server and system problems.

USG

Senior Linux Engineer (July 2016 - August 2017) - Greater Chicago Area

RHEL OS upgrade: organization wide RHEL OS upgrade (from RHEL5.x to 6.x/7.3) OS vulnerability assessment and patching.

Maintained GitHub repositories for DevOps environment, automation code and configuration Veritas cluster administration, configuration. HP 3PAR configuration and administration. Puppet configuration management for Linux OS and Java applications.

Blackhawk Network

Senior Linux Engineer (Infrastructure Architect) August 2015 - June 2016 - Pleasanton, California

Performed remote management using remoto-it, a Plain Old Bash (POB) script that executes recipes to perform deployments, change orders, and maintenance.

Developed BASH scripts to redact sensitive data from Apache access and error logs using a sed expression, deploy WAR files to environments in parallel.

Migrated the current Linux environment to AWS/RHEL Linux environment and used auto scaling feature.

Increasing EBS backed volume storage capacity when the root volume is full using AWS EBS Volume feature.

Created AWS Route53 to route traffic between different regions.

Created users and groups using IAM and assigned individual policies to each group.

Created load balancers (ELB) and used Route53 with failover and latency options for high availability and fault tolerance.

Configured Security group for EC2 Window and Linux instances and also for puppet master and puppet agents.

Massive RHEL OS upgrade: organization wide RHEL OS upgrade (from RHEL5.x to 6.x)

Provided scripting solution for automations includes HA cluster, NFS mounts, autofs and authentication.

Provisioned, built, troubleshot, load balanced and involved in performance enhancement Jboss, WildFly, Apache, HA Proxy and Tomcat servers.

Works with Kerberos implementers to improve the single sign on experience when multiple protocol stack implementation co-exist on the same operating system.

Anthill Pro setup and configuration. Set up GitHub Repository and configured Jenkins for CI processes.

Refined automation components with scripting and configuration management with Ansible.

Worked with developers to ensure new environments both met their requirements and conformed to industry-standard best practices.

Migrate IaaS, PaaS and SaaS instances between public and private clouds - Java, J2EE, Ruby, LAMP.

Macy's

Senior Operations Engineer (Linux) (January 2013 - August 2015) - San Francisco Bay Area

Redhat 4.x-6.x System Administration, operations Support

Redhat Satellite 5.4 and 6.0 Administration, creating and maintaining channels, kickstart profiles and snippets

Chef Implementation, VMware administration, Mass RHEL OS upgrade (over 1000)

Researched and developed Apache 2.2 SSL proxy front end proof of concept that provides SSL encrypted communications between Tomcat 7 servers and Apache front ends.

Developed automation and deployment utilities using Ruby, Bash, Powershell and Python.

Established OpenStack project Infrastructure Program and served as OS integration lead.

Wrote custom monitoring and integrated monitoring methods into deployment processes to develop self-healing solutions.

Implement, installed deploy multi node MapR Hadoop Cluster (Cloudera

and Hortonworks), developed HA architecture for Hadoop EcoSystem components; developed puppet recipes for automation of Hadoop Installation and configuration of nodes. Experience in Importing data from various sources to the Cassandra cluster using Java API’s.

Planned and executed massive organization wide migration from PureFTPD to SFTP involving 100 over servers.

Planned and executed organization-wide massive RHEL OS upgrade (from RHEL4.x to 6.x) on 2500+ servers.

Planned and executed organization wide security patches (GHOST and Bash vulnerability) over 2500 servers.

Provisioned, built, troubleshot, load balanced and involved in performance enhancement Jboss, Apache and Tomcat servers.

Set up and configured GitHub Repository, Nagios monitoring and Splunk server.

VMWare ESX and ESXi hypervisor experience with creating and maintaining vSphere environment.

Scripting with shell, powershell for vmware automatic kicking off virtual instances and other system administration task automations.

Riverbed Technology

Senior Linux Systems Engineer (July 2011 - December 2012) - San Francisco Bay Area

Redhat Satellite 5.4 Administration, creating and maintaining channels, kickstart profiles and snippets

Redhat 6.1, 5.4 System Administration, VMware ESXi and JBoss Created automation and deployment templates for relational and Nosql databases (standalone and RDS).

User management with LDAP and setting up Kerberos authentication for cluster and creation of volumes for users and allocating quotas; established NFS gateways on data nodes/NFS mount on edge nodes.

Cisco ASA administration.

System administration task automation related scripting using bash, python and perl.

Code deployment components automation with scripting and configuration with Ansible. Heavy usage of GitLab and GitHub

Chef Implementation, Mass RHEL OS upgrade.

Provisioning VMware and NetApp environment for virtual instances. Configuring and monitoring with Zenoss.

Using Puppet for pushing server configuration across distributed virtual server environments.

Setup and configured SVN and GitHub Repository.

Performance enhancement and tuning for Tomcat, Apache and JBoss servers on RHEL6 OS virtual instances.

Used Visual C Studio and MinGW GCC compiler.

Created Build and Build deployment scripts.

IBM AIX & Linux System Administration

Creating and Administering LPAR virtual server on IBM P5 and IBM P7 platform. Configure VIO for LPAR. User management process automation (Bash scripts). EMC storage Administration: Create and mount NFS for local and remote servers. System Admin of RHEL 5.2 and 5.3 servers.

Nokia

Senior Systems Administrator September 2010 - July 2011 - Palo Alto, California

As the Linux administrator, I manage system updates and environment changes in concert with our developers and oversee the transition from a traditional hardware infrastructure setup to a hosted private cloud solution. Additionally, I use git to manage our custom Puppet modules. JBoss application and Apache web server configuration and administration. Cisco ASA and Juniper firewall administration. NetApp administration: Created filer and NFS mount for local and remote servers. Assists with the addition of Hadoop processing to the IT infrastructure. Used J2EE web services

and application (TurboTax) support. Configuring and administering JBoss, Apache, Tomcat load-balancing. Build monitoring, automation scripting, monitoring and troubleshooting (production and QA environment). Managing/

system admin below production environment Linux and Solaris servers. Automated system administration tasks using bash and python scripts.

Satmetrix Systems

Development Systems Administrator (July 2008 - September 2010) - San Mateo, California

Defense Manpower Data Center

Web-Oracle Administrator/ Configuration Mgt Engineer (October 2007 - July 2008) - Monterey Bay, CA

HP

Unix System Administrator (January 2007 - October 2007) - Greater San Diego Area

Wells Fargo

Application Support Engineer (January 2004 - January 2007) - Tempe/Chandler, Arizona

Behr Process Corporation

Systems Engineer (January 2003 - December 2003) Santa Ana, California

National Institute of Education, Singapore

Development Systems Engineer (February 1999 - November 2001) - Singapore

HP

Data Center Programmer Analyst (March 1997 - February 1999) - Singapore

Education:

Nanyang Technological University: Digital Communications

University of Science and Technology Beijing: Computer Engineering

Beijing University of Language and Culture: Diploma in Technical Chinese Language (Mandarin)

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