Danish Siddiqui
Chicago,IL
Summary
5 years of extensive experience in cloud environments, including Azure and AWS. Expert in Linux administration, automation, virtualization, and monitoring. Troubleshooting complex problems and optimizing system performance in large-scale environments. Proficient with RHEL/Red Hat, SUSE/SLES, Ubuntu, CentOS, Rocky Linux, Cloud Linux and AlmaLinux. Expert in large scale on-premise, physical, virtual and cloud environments. Multiple years of experience tutoring students from grade 6 through 12. Experience in management as well with Allied Universal.
Overview
5
5
years of professional experience
Work History
Operations Manager
Allied Universal Security Services
10.2024 - Current
- Responsible for over 400 security professionals in the Chicago metropolitan area.
- Created schedules for over 95 sites that required security guards.
- Supervised operations staff and kept employees compliant with company policies and procedures.
- Analyzed and reported on key performance metrics to senior management.
- Managed budgets effectively, consistently delivering projects on-time and within financial constraints.
- Conducted regular performance reviews, identifying areas for improvement and developing action plans to address them.
- Led hiring, onboarding and training of new hires to fulfill business requirements.
- Developed and maintained relationships with external vendors and suppliers.
- Established positive and effective communication among unit staff and organization leadership, reducing miscommunications, and missed deadlines.
- Achieved higher employee retention rates by fostering a positive work environment and providing opportunities for professional growth.
- Identified and resolved unauthorized, unsafe, or ineffective practices.
- Handled staff training initiatives aimed to upskill the workforce to meet dynamic industry demands.
- Developed strong relationships with vendors, resulting in better pricing and improved service quality.
- Spearheaded process improvements, resulting in increased productivity and reduced operational costs.
- Reported issues to higher management with great detail.
- Enhanced customer satisfaction by establishing clear communication channels and addressing concerns promptly.
Linux System Administrator
Azumo
02.2024 - 08.2024
- Supported 1000+ Linux server of various flavors including RHEL, CentOS, SUSE/SLES, and Ubuntu.
- Provided on-call support and worked with Vendors on system issues and bugs for its resolution.
- Support and fine-tune performance of database and application servers
- Created and maintained source code repository in Git and handled branching, tagging, and merging process.
- Support IDM and FreeIPA-based AD integration authentication.
- Installation of Patches, Hardware, software, and firmware upgrades.
- Created and Maintained source code repository in GIT and handled branching, tagging & merging process.
- Tuned performance of the Linux servers based on the performance of the network and firewall traffic.
- Managed hardware troubleshooting on Linux servers.
- Installation and configuration of Red Hat Cluster using pacemaker and PCS Stonith fencing.
- Experience in configuration of NIS, DNS, NFS, LDAP, SAMBA, Sendmail and FTP.
- Developed access, security management and security troubleshooting skills.
- Installed and managed Apache-Tomcat server and WebSphere Application Server in Linux Platform.
- Created Bash shell scripts to monitor system resources and system maintenance.
- Managed and maintained Linux-based systems and applications in a fast-paced production environment.
- Installed and configured servers, storage systems, and network devices.
- Provided technical support and troubleshooting for end-users, including hardware and software issues.
- Developed and implemented backup and disaster recovery strategies to ensure data integrity and business continuity.
- Implemented and maintained monitoring and alerting systems using Nagios and Zabbix.
- Install, configure, and troubleshoot various software applications, web servers, and databases on Linux platforms.
- •Implement security measures such as firewall configurations, intrusion detection/prevention systems, and SSL/TLS implementation.
- Perform system monitoring, log analysis, and performance tuning to optimize system performance and identify potential issues.
- Automate routine tasks using scripting languages like Bash and Python, improving operational efficiency and reducing manual efforts.
- Install, configure, and maintain COTS software in Linux environments.
- Performed system upgrades, patch management, and security enhancements to keep systems up to date.
- Developed and maintained custom scripts and automation tools, significantly improving system administration efficiency and reducing manual errors.
- General maintenance, troubleshooting and root cause analysis for Veritas Cluster Server (VCS).
- Responsible for handling incidents in the environment.
- Manage and guide engineers building and maintaining a Cloud and On-Premise Infrastructure.
- DevOps, and Observability Infrastructure in compliance with technical designs and requirements.
- Setup database connectivity to MySQL Server.
Math Tutor
WyzAnt
12.2021 - 02.2024
- Aided over 60 students worldwide in a variety of math topics to prepare them for their final exams.
- Utilized visual aids and hands-on activities to improve student understanding of mathematical concepts.
- Boosted student confidence in problem-solving by providing individualized support and targeted feedback during
tutoring sessions. - Enhanced student retention of math skills with engaging lesson plans and regular practice exercises.
- Collaborated with other tutors to share best practices and develop effective teaching strategies for diverse learning
styles. - Used positive reinforcement, repetition, and review to help students master challenging material.
- Explained math concepts in caring and encouraging environment to help kids thrive and learn.
- Assisted struggling students in building a strong foundation in basic math skills to improve overall performance in advanced courses.
- Developed and implemented individualized lesson plans for each student, tailored to their individual needs.
- Utilized diverse teaching strategies and resources to help students better understand math concepts.
Information Technology Intern
Sidley Austin LLP
06.2020 - 03.2021
- Supported firm's Network Operations Center and provided 24/7 infrastructure and applications management,
support, and monitoring of IT systems. - Created and serviced administrator and user accounts on Linux-based systems, managing 150 deployments.
- Utilized Microsoft Azure's Active Directory program to create and/or terminate over 150 user accounts.
- Closed over 400 problem-and-incident tickets using ServiceNow.
- Configured and managed Azure Virtual Networks (VNets), subnets, and network security groups (NSGs).
- Monitored infrastructure health, performance, and security using Azure Monitor and Azure Security Center.
- Implemented site-to-site VPN and Azure ExpressRoute for hybrid network connectivity.
- Configured and managed Azure SQL Database, Azure Cosmos DB, Azure Blob Storage, and Azure Data Lake
Storage.
Education
Bachelor of Science - Computer Science
University of Illinois At Chicago
Chicago, ILSkills
- Linux Distributions: RHEL 6/7/8/9, CentOS 6/7/8/9, Fedora, Debian Rocky Linux, AlmaLinux, Ubuntu, SUSE, Amazon Linux
- Cloud: Azure, GCP, AWS EC2, S3, Elastic Load Balancer, Route53
- Managing system configuration: Ansible, Puppet
- Scripting: Bash, YAML, JSON
- SSH based filed transfer protocols: SFTP, FTP, SCP, RSYNC
- Storage environments: SAN, NAS, LVM, RAID, XFS, EXT4
- Server Management: DNS, DHCP, NFS, SAMBA, FTP, HTTPD
- Backup systems: Netbackup, rsync, tar, Veeam, Commvault
- Networking: IPtables, Firewalld, TCP/IP, UDP, TCP Dump, SMTP
- Troubleshooting: top, free, ping, tcpdump, ssh, telnet, netstat, traceroute, sar and nc
- Virtualization systems: VMware ESXi, vSphere Client, vMotion, KVM
- User administration: LDAP, Kerberos, IDM, Active Directory
- Security Hardening: SELinux/ACL and chroot
- Web Server Load Balancing: HAProxy, Nginx
- Database: MySQL/MariaDB, PostgreSQL, Oracle
Timeline
Operations Manager
Allied Universal Security Services
10.2024 - Current
Linux System Administrator
Azumo
02.2024 - 08.2024
Math Tutor
WyzAnt
12.2021 - 02.2024
Information Technology Intern
Sidley Austin LLP
06.2020 - 03.2021
Bachelor of Science - Computer Science
University of Illinois At Chicago
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