Nazmul Haque

Experience

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  OscilloSoft Pty Ltd

  Apr 2015 - Oct 2021

  System Administrator

  In my position as the System Administrator at Oscillosoft I used to look after the companies infrastructure in AWS and Zoho . • Worked with core AWS services, including VPC, Subnets, EC2, Security Groups, S3, RDS, and IAM, to design and manage cloud infrastructure. •Set up, configured, and maintained EC2 instances within AWS to meet operational requirements. •Installed, configured, and managed Nagios, an open-source server monitoring tool, to remotely monitor and ensure server health. •Set up and configured MariaDB servers to support development teams. •Installed and managed open-source VPN solutions, including OpenVPN and SoftEther, for secure remote access. •Created and managed SFTP user accounts for development teams to facilitate secure file transfers. •Configured and maintained cron jobs for automated task scheduling and execution. •Developed shell scripts to automate tasks such as creating virtual hosts, managing user accounts, and configuring file/folder permissions. •Utilized Terraform to automate the provisioning and management of AWS infrastructure. •Implemented SSL certificates for client websites using Let's Encrypt as an open-source certificate authority. •Enforced multi-factor authentication (MFA) through policies in AWS, Google Workspace, and Zoho for enhanced security. •Applied IP-based access restrictions using AWS security policies to ensure network security. •Remotely enforced BitLocker encryption on all Windows 10 workstations to protect data integrity. •Managed user accounts across various company service platforms to ensure access control and compliance. •Collaborated closely with the technical manager to achieve ISO 27001 certification, contributing to the company’s compliance and security goals. Show less

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  SEBPO

  Nov 2021 - May 2022

  System Administrator

  In my role as System Administrator at Sebpo I was mostly involved in research based work and compliance.• RND on GUI based web hosting control panel ISPConfig & HestiaCP. • RND on Wazuh server as SIEM tool for monitoring nodes.• Investigate Cyber Security Incidents and prepare incident report as a part of IRT team.• Worked closely with IT manager to review and ensure SOC2 and ISO27001 compliance is met throughout the organization.• RND on pfsense as an opensource firewall solution.• RND on Glusterfs and lizardfs as a scalable and distributed storage/backup server.• Linux based virtual machines in kvm based proxmox • Setup Gogit server in proxmox• Dockers and maintain dockers in portrainer• High availability and clustering in proxmox• Wrote shell scripts to automate the process of backup and remove old backup. Show less

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  FluidStack Ltd

  Apr 2022 - Oct 2024

  Linux System Administrator

  As a Linux System Administrator at FluidStack, I have successfully maintained Linux-based GPU servers, ensuring seamless operations for high-performance computing and AI/ML workloads. My expertise encompasses virtualization, ansible automation, and large-scale system deployments, with a focus on GPU infrastructure, Kubernetes, and system performance tuning.Key Contributions and Responsibilities: Server Maintenance & Provisioning: •Managed Linux-based GPU servers hosted on bare metal server and as VMs in Proxmox. •Configured GPU Passthrough and provisioned GPU-enabled Linux servers. System Automation & Scripting: •Developed and contributed to Ansible scripts for system hardening and kernel tuning. •Enhanced and maintained existing Bash scripts for automation tasks. Networking Configuration: •Configured port forwarding using iptables. GPU Infrastructure Management: •Installed and configured NVIDIA GPUs and display drivers in GPU servers. •Conducted NCCL and GPU burn tests to validate system performance. Storage Management: •Worked with Linux disks, Logical Volume Managers (LVMs), and related storage configurations. Kubernetes Cluster Deployment: •Contributed to large-scale Kubernetes cluster setups using Kubespray and Helm charts. •Deployed monitoring solutions like Prometheus and Grafana for GPU servers and Kubernetes clusters. •Troubleshot GPU pods in high-scale Kubernetes environments. AI/ML Tool Support: •Installed and troubleshot AI/ML frameworks such as PyTorch and TensorFlow. SLURM Cluster Administration: •Supported GPU workloads by troubleshooting within SLURM-managed clusters.This blend of expertise in server management, automation, GPU infrastructure, and Kubernetes makes me adept at managing complex, performance-critical computing environments. Show less

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  Square Informatix Ltd

  May 2022 - now

  Cloud System Administrator

  In my position as System Administrator at Square Informatix Ltd I have successfully looked after the company's on-premise cloud infrastructure based on Nutanix & Proxmox.Key Contributions and Responsibilities: Cloud Solution Design and Deployment: •Designed and implemented a highly available, scalable, and fault-tolerant on-premise cloud infrastructure using the Proxmox virtualization platform, integrated with hyperconverged storage technologies like Ceph and ZFS. Virtual Machine Provisioning: •Provisioned virtual machines in Nutanix and Proxmox environments, serving as tenant servers for new clients while ensuring optimal resource allocation and performance. Client Engagement: •Conducted on-site visits to present tailored cloud space proposals to clients, ensuring solutions aligned with their specific requirements. Pricing and Collaboration: •Collaborated with the sales and marketing departments to develop competitive pricing strategies for new client projects. Research and Development: •Conducted R&D on open-source technologies to identify cost-effective alternatives for cloud infrastructure solutions. Data Center and Cloud Platform Monitoring & Incident Management: •Deployed a comprehensive monitoring solution for the infrastructure using Prometheus and Grafana, providing real-time insights into system performance and health. •Proactively monitored the data center environment, including servers and network switches, ensuring immediate resolution of any emergencies. •Monitored Nutanix and Proxmox cloud platforms, addressing node failures, backup issues, and other critical incidents promptly to maintain high availability and performance. Show less