Humera Rehman
Milton
Summary
Skilled and highly driven IT professional with extensive experience in operations, DevSecOps, and architecture. Successfully designs, implements, and manages cutting-edge deployment automation of cloud resources while optimizing mission-critical deployments in AWS. Leverages configuration management, CI/CD, and DevOps processes to ensure efficient and effective operations. Recognized for exceptional leadership qualities, provides training to teams, and implements methodologies for enterprise success with a focus on scalability, performance, and cost minimization.
Overview
20
20
years of professional experience
1
1
Certification
Work History
Senior Infrastructure / DevOps Engineer
Xero
03.2019 - Current
- Improved code deployment efficiency by automating processes with CI/CD pipelines.
- Automated manual tasks through scripting languages such as Python or Shell, boosting team productivity levels.
- Designed and implemented containerization strategies using Docker and Kubernetes, improving resource utilization and management.
- Reduced system downtime for critical applications by implementing robust monitoring and alerting tools.
- Monitored automated build and continuous software integration process to drive build/release failure resolution.
- Contributed to the creation of a DevOps culture within the organization, leading to increased agility and cross-functional collaboration.
- Helped in gathering Accelerate metrics (Deployment Frequency, Lead Time for changes, Change Failure rate, MTTR) to strive towards becoming a high performance team and to identify bottlenecks, inefficiencies, and risks in their software delivery pipeline.
- Provided 24/7 on-call support for critical systems, ensuring high availability and rapid issue resolution.
- Mitigated security risks by conducting regular vulnerability assessments and applying necessary patches.
- Optimized build processes using GitHub Actions for fast feedback loops in development cycles.
- Enhanced application performance by optimizing infrastructure configurations based on usage patterns.
- Collaborated with development teams to streamline software releases, resulting in faster time-to-market.
- Improved project visibility and tracking with implementation of comprehensive dashboards and reporting tools.
- Collaborated with cross-functional teams to ensure seamless application development and deployment cycles.
- Implemented containerization using Docker and Kubernetes, leading to improved application scalability and manageability.
- Coordinated disaster recovery planning and execution, ensuring business continuity in emergency situations.
- Designed and executed cloud infrastructure migrations, resulting in enhanced system flexibility and cost savings.
- Fostered innovation by researching and integrating cutting-edge technologies into existing systems.
- Fostered culture of collaboration and knowledge sharing among development and operations teams, boosting overall project success.
- Built databases and table structures for web applications using MSSQL and PostgresSQL
- Created proofs of concept for database schema migration pipelines.
- Implemented Blue/Green deployment Infrastructure and pipelines to enhance application reliability, availability and enhance continuous integration and deployment.
- Build a database schema migration deployment pipeline using GitHub Actions using Atlas, Liquibase and Flyway migration tools
- Deployed Airflow (apache) on our Kubernetes platform using Helm 3 along with all pre-production and production environments and respective pipelines.
- Deployed AWS Workspaces (Linux and Windows) by integrating with Active Directory service using AD connectors.
- Migration of application and OS level metrics from Datadog to New Relic by implementing fanout UDP package.
- Implemented patching strategy leveraging AWS Systems Manager and wrote Ansible playbooks to gracefully stop entire application and put up maintenance page using AWS ALB features.
- Engaged in all DevSecOps team-based assignments to accomplish Xero's organizational goals.
- Infrastructure security and compliance, ISO and SOC2 audit readiness.
- Ample coding exposure with Ansible, Terraform, Python, Bash for infrastructure orchestration, deployment and scripting.
- Supported Ubuntu 14/16/18/20/22 and Amazon Linux 1/2 Operating Systems.
- Technologies: Docker, ECS, EC2, RDS, S3, Lambda, Workspaces, Secrets Manager KMS, IAM, Systems Manager, Cloud watch, Code Build, Code Pipeline, VPC/networking, Route53, WAF, Guardduty, Workspaces, Active Directory, SQS, Sumo Logic, Datadog, CloudPassage, New Relic, ELK, Postgres SQL, rabbitmq, Cassandra etc.
- Scripting languages: bash, shell, PowerShell, python, node.js
Site Reliability Engineer (DevOps)
Cox Automotive
07.2017 - 03.2019
- Create and maintain fully automated CI/CD pipelines for application code and infrastructure code deployment using Jenkins, Artifactory, Terraform, Terragrunt, Docker and scripting languages: bash, batch, PowerShell, groovy, python, Node.js, java SDK.
- Designed the architecture of DTI on AWS by adhering to AWS Well-Architected Framework principles and Cox Automotive Security Policy thereby reducing cost, increasing performance and enhancing security of overall architecture of the project.
- Proficient in using the following AWS services: EC2, S3, Beanstalk, Lambda, ECS, Redshift, RDS, DynamoDB, SQS, SNS, SES, GuardDuty, WAF, CloudFront, CloudWatch, CloudTrail, CloudFormation, Config, Trusted Advisor, ElastiCache (redis), VPC, Route 53, API gateway, Kinesis, IAM, Secrets Manager, WAF & Shield, Device Farm, Cost Explorer, Auto Scaling, SSM.
- Implemented Secrets Management service EC2 Parameter store (SSM) to keep secrets out of source code and enforcing retrieval of secrets by making secure API calls to Parameter Store at runtime.
- Used Splunk and AWS Systems Manager to gain operational insights and took actions of AWS resources using Run Command, Patch Manager, Session Manager.
- Built and deployed Elastic beanstalk stacks with blue/green environments to break up monolithic app into microservices, improving developer workflow, increasing scalability, and optimizing speed.
- Managed GitHub repositories and permissions, including branching, pull requests and tagging.
- Employed CloudFront acts as a proxy for our Front-End UI site and all our microservice APIs.
- Security services employed: WAF, Shield DDOS, GuardDuty, IAM roles and policies, KMS encryption (at-rest), ACM (Certificate Management), Security Groups, NACLs, NAT gateways, NNE and TLS for in-transit encryption.
- Network Architecture designed and built using, Private Subnets, NAT gateways, ALB, VPC endpoints, NACLs.
- Deployed New Relic across all our application infrastructure for APM (Application Performance Management) Company : Cox Automotive (Dealertrack) Project : DTN / Digital Retailing Services (DRS).
Sr. Infrastructure Engineer
Cox Automotive
07.2015 - 07.2017
- Virtualization, Cloud technology and Infrastructure specialist.
- Microsoft platform and Infrastructure support: Win 2003/2008/2012, SQL 2005/2008, AD, DNS, DHCP, Group Policy Management, DFS, IIS 6/7, Sharepoint 2010, clustering.
- AWS (Amazon Web Services) administration.
- Manage our internal Corporate IT infrastructure: Active Directory user management, GPO, OU, DNS, DHCP, Exchange, MOSS, Cherwell ticketing system administration, CSC integration.
- Install, configure and manage VMware environments – vCenter administration.
- Advanced administration of Hyper-V environments – clustering VMs, exporting/migrating VMs, VHD/ AVHD disk management, snapshot management.
- Comprehensive management of virtualized infrastructure running on Windows Server 2008/2012 with Hyper-V, Xen VMs and VMware ESX through 3rd party API (similar to SCVMM).
- Configure Uptime which offers deep visibility into the health, performance and availability of datacenter environments – across applications, operating systems, hypervisors and hardware via a single interface (similar to MOM and SCOM).
- MD1000/3000i, 3PAR and NetApps Storage administration.
- Basic Juniper network device administration.
- Work in accordance to ITILv3 standards and principles.
- Final point of escalation and On-Call coverage (3rd Line resource) Company : Project : Duration : Designation :, Technical Services Group.
Sr. Systems Administrator Level 3
Tenzing Managed IT hosting
12.2010 - 06.2015
- Virtualization, Cloud technology, MS SQL DBA, Sharepoint 2010 and Infrastructure specialist.
- Microsoft platform and Infrastructure support: Win 2003/2008/2012, SQL 2005/2008, AD, DNS, DHCP, Group Policy Management, DFS, IIS 6/7, Sharepoint 2010, clustering.
- AWS (Amazon Web Services) administration.
- Manage our internal Corporate IT infrastructure: Active Directory user management, GPO, OU, DNS, DHCP, Exchange, MOSS, Cherwell ticketing system administration, CSC integration.
- Install, configure and manage VMware environments – vCenter administration.
- Advanced administration of Hyper-V environments – clustering VMs, exporting/migrating VMs, VHD/ AVHD disk management, snapshot management.
- Comprehensive management of virtualized infrastructure running on Windows Server 2008/2012 with Hyper-V, Xen VMs and VMware ESX through 3rd party API (similar to SCVMM).
- Configure Uptime which offers deep visibility into the health, performance and availability of datacenter environments – across applications, operating systems, hypervisors and hardware via a single interface (similar to MOM and SCOM).
- MD1000/3000i, 3PAR and NetApps Storage administration.
- Basic Juniper network device administration.
- Work in accordance to ITILv3 standards and principles.
- Final point of escalation and On-Call coverage (3rd Line resource).
Enterprise Client Support Systems Analyst L3
Attenda Ltd
09.2009 - 12.2010
- Enterprise Client Support for complex large solution.
- Implementing RFCs and dealing with P1 ticket, Sitescope, NetIQ, AIM alerts that monitor ports, URL’s, URL Contents, system component failure, bad memory, disk space issue, etc.
- Managing and maintaining Windows Servers 2000, 2003 and 2008.
- Deal with queries related to FTP: creating FTP and isolated FTP.
- Managing and maintaining II5, IIS6 and IIS7.
- Troubleshooting websites on IIS.
- Identify Load Balanced websites (physical or NLB) and narrow down the cause of a site outage.
- Troubleshooting AD Domain issues for Attenda clients - Active Directory 2003.
- Manage and maintaining: MS SQL 2000, 2005, 2008: Troubleshooting and configuring SQL jobs, log shipping, maintenance plans, replication and mirroring.
- Backing up and restoring databases.
- Exposure to VMware, Citrix, NetBackup, BackupExec, LiteSpeed and Hyperbac.
- Gained a good understanding of Firewall and Loadbalancer configuration: ACL, NAT, Service configuration, Probe information etc.
- Experience with configuring NLB and building Microsoft Clusters: SQL and File share Cluster.
- Very good understanding of Attenda processes and ITIL v3.
Windows Systems Administrator
Rackspace UK
11.2006 - 09.2009
- Implementing, configuring and designing Active Directory 2003 and 2008.
- Installed, configured and designed a Certification Authoring 2003.
- Monitoring system performance (Server 2000, 2003, 2008), managing hard disks and data storage.
- Updating servers, patching with SUS, installation of applications.
- Configuring server for monitoring system performance, MOM, etc.
- I am the SME (Subject Matter Expert) for SSL certificates in our UK office.
- Renew and install SSL certificates on web servers.
- Investigating the cause of MOM alerts, Rackwatch and Sitescope alerts that monitor ports, URL’s, URL Contents, system component failure, bad memory, disk space issue, etc.
- Managing and maintaining Windows Servers 2000, 2003 and 2008: patching, upgrading, and troubleshooting.
- Experience with 3rd party applications like Legato and CommVault Back ups, Sitescope and Rackwatch monitors, I-mail and Urchin Web stats.
- Implement RAID solution, defrag volumes and partitions, resolve driver issues, manage folders and NTFS and share permissions.
- Deal with queries related to FTP: creating FTP and isolated FTP.
- DHCP and DNS queries, setup up Zone files: A, MX, PTR, CNAME records.
- Create and manage websites via IIS6 and IIS7.
- Troubleshoot web service related queries.
- Identify Load Balanced websites and narrow down the cause of a site outage.
- MS SQL 2000, 2005, 2008: Trouble shooting and configuring SQL jobs, log shipping, maintenance plans, replication and mirroring.
- Backing up and restoring databases.
- Experience with configuring NLB and building Microsoft Clusters: SQL and File share Cluster.
- Familiarity with Red Hat, Ubuntu, Centos, Linux Operating Systems: Basic trouble shooting for High CPU and processor queue lengths.
- Dealt with SAN, NAS, DAS, SSL, MOSS, WSUS, NLB, Load Balancing, Virtualization, VMware, ESX, Hyper-V technology.
- Quality Checking servers before going live - Disk repartitioning, configuring RAID/rebuilding raid, OS build from RIS via PXE boot, configuring NIC teaming on Dell and HP servers, patching windows servers, updating HP and dell drivers/firmware, setting up clustering (file and SQL Clusters), joining servers to domain, configuring monitoring via MOM etc.
IT Helpdesk Technician
Fujitsu UK
01.2005 - 10.2006
- Providing support at various levels to Telewest (now Virgin Media) Broadband and Dial Up customers.
- Installing and configuring LAN’s via USB & Ethernet connection on various Windows & Apple Mac operating systems.
- Configuring & supporting various mail clients including Outlook Express, Outlook and Mac Mail.
- Configuring and supporting Internet Explorer all versions.
- Installing and configuring Wireless networks and troubleshooting connection issues.
- Dealing with strict SLA’s to personally achieve approx.
- 40 calls a day.
Education
Master of Science - Innovative Technology, Technology
University of East London
United Kingdom05-2008
Webmaster Technology - Webmaster Technology
British Institute of Technology
United Kingdom04.2005
Bachelor of Science - Computer Applications
Osmania University
Hyderabad, India05.2003
Skills
- CI/CD tooling: Jenkins, TeamCity, Ansible, Terraform, Terragrunt, CloudFormation, CodeBuild
- OS/Platform: Kubernetes, AWS EC2, ECS, EKS Lambda, serverless, Windows 2003-2018, VMware and Ubuntu 14/16/18/20/22, Amazon Linux1/2
- Scripting languages: Bash, PowerShell, Python, Nodejs
- Monitoring and Logging: Splunk, SumoLogic, Datadog, NewRelic, ELK/Kibana
- Database Management: MSSQL and Postgres
- Infrastructure automation
- Microservices architecture
- Maintenance and troubleshooting
- Effective communication
- Security best practices, ISO and SOC2 audit readiness
- Incident / Performance /Capacity management
- Continuous deployment / Continuous integration
- Script maintenance and updates
- Agile development methodologies
- Performance analytics using Accelerate Metrics: Deployment Frequency, Lead Time for Changes, Change Failure Rate and MTTR
- Cross-functional collaboration
- Engineering standards and best practices based off AWS Well Architected Framework
Certification
CKA - Certified Kubernetes Administrator (May 2020)
The Linux Foundation - LFS158x: Introduction To Kubernetes (May 2019)
SumoLogic - SumoLogic Fundamentals Certification (Jan 2019)
AWS SysOps - AWS Certified SysOps Administrator (Associate) (May 2018)
VMWare - VCP 4.1 (Dec 2010)
Microsoft - MCITP MCSE MCSE 2016 MCSE 2012 MCITP 2008 MCTS MCSE 2003 MCSA MCP (2007 – 2017)
Certification Transcript ID: 786823
Credentials: Microsoft Certified Solutions Expert (MCSE 2012) Microsoft Certified Solutions Associate (MCSA 2012) Microsoft Certified IT Professional (MCITP Enterprise Administrator 2008), Microsoft Certified Technology Specialist (MCTS SQL2008, Exchange 2007), Microsoft Certified Systems Engineer (MCSE 2003), Microsoft Certified Systems Administrator: Messaging (MCSA 2003), Microsoft Certified Professional (MCP)
Certification / Version: MS Exchange 2007, Implementation and Maintenance SQL Server 2008, Implementation and Maintenance Microsoft Enterprise Administrator 2008 Active Directory 2008, Network Infrastructure 2008, Applications Infrastructure 2008 Microsoft Windows Server 2003 Microsoft Exchange 2003 Microsoft Sharepoint 2010
Contact
Email: humerarehman@gmail.com
Cell: (+1) 647 914 1210
References
References
Available upon request
Languages
English
Native or Bilingual
Hindi
Native or Bilingual
Urdu
Native or Bilingual
Timeline
Senior Infrastructure / DevOps Engineer
Xero
03.2019 - Current
Site Reliability Engineer (DevOps)
Cox Automotive
07.2017 - 03.2019
Sr. Infrastructure Engineer
Cox Automotive
07.2015 - 07.2017
Sr. Systems Administrator Level 3
Tenzing Managed IT hosting
12.2010 - 06.2015
Enterprise Client Support Systems Analyst L3
Attenda Ltd
09.2009 - 12.2010
Windows Systems Administrator
Rackspace UK
11.2006 - 09.2009
IT Helpdesk Technician
Fujitsu UK
01.2005 - 10.2006
Master of Science - Innovative Technology, Technology
University of East London
Webmaster Technology - Webmaster Technology
British Institute of Technology
Bachelor of Science - Computer Applications
Osmania University
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