# Designed, deployed, and optimized OpenStack cloud infrastructure for clients, ensuring scalability, security, and high availability.# Led cross-functional teams in implementing cloud-based solutions, integrating with existing enterprise infrastructure, and automating provisioning processes.# Architect highly available and scalable cloud environments using OpenStack services such as Nova (Compute), Neutron (SDN), Cinder (Block Storage), Swift (Object Storage), Ceph (Storage), Glance (Image Service), Trove (DaaS), CloudKitty (Metrics) and Keystone (IAM).# Collaborated with stakeholders to align cloud infrastructure with business objectives and defined service-level agreements (SLAs) for cloud services.# Integrated monitoring solutions like Graylog, Prometheus, and Grafana continuously monitor system health and performance.# Supervise an NOC team to safeguard the cloud infrastructure by correctly measuring networks, threats, and core components.# Coordinate with the Security Operations Center (SOC) and supervise security issues and associated operations that require support from the Network Operations Center (NOC) team.# Conducted workshops and training sessions on cloud architecture, automation, and security to upskill internal teams.

# Leading telecom IT projects across the full lifecycle, covering design, deployment, and security of critical BSS infrastructure, systems, and network elements.# Ensuring compliance with telecom-specific regulations (BTRC guidelines) and industry standards to meet legal, operational, and performance benchmarks.# Proactively managing project risks, issues, incidents, and change requests within the telecom environment, ensuring minimal impact on QoS and customer SLAs.# Overseeing major telecom BSS transformation projects such as MNP, CAS (BTRC), TDM to IP migration, and implementations, ensuring alignment with project timelines and stakeholder expectations.

# Install, configure, and maintain Linux servers supporting critical BSS applications, including billing, CRM, and revenue management systems.# Configure and deploy network devices essential for BSS infrastructure, such as routers, firewalls, and load balancers, ensuring secure and efficient data flow within billing and CRM environments.# Perform regular maintenance and system upgrades for BSS systems, including service packs, patches, hotfixes, and security configurations, to meet telecom standards and ensure uninterrupted billing and customer management services.# Develop and implement Linux system policies, standards, and best practices tailored to BSS operations, optimizing service continuity and data accuracy across billing and customer relationship platforms.

# Monitor and analyze the health and performance of Oracle BI systems supporting telecom BSS functions, including billing, CRM, and revenue assurance, ensuring optimal operation of servers, databases, ETL processes, and network components.# Design and manage telecom-specific data models, metadata, and security layers within Oracle BI, supporting OLAP and ad-hoc reporting to deliver insights into customer behavior, ARPU, and service usage.# Collaborate with business users, data engineers, and developers to gather and translate telecom business requirements into technical specifications, enabling data-driven decision-making for churn analysis, product performance, and revenue growth.# Troubleshoot and optimize Oracle BI application performance, focusing on query optimization, load balancing, and high availability to support reliable, real-time data insights for telecom operations and strategic planning.

# Manage the Rating and Interconnect modules by ensuring the availability of Call Detail Records (CDRs) and maintaining uninterrupted processes and health checks for Unix systems critical to telecom operations.# Oversee the deployment of production deliveries, ensuring thorough User Acceptance Testing (UAT) of previously raised Change Requests (CRs) to mitigate service disruptions.# Execute the monthly billing process for Post-Paid subscribers, following comprehensive pre- and post-task checklists to ensure accuracy and compliance with billing standards.# Develop various tools and applications as needed to support client business and operational requirements, enhancing efficiency in telecom operations and improving service delivery.

# Core Billing Network Operation and Management. # Data collaboration, Rating, and invoice generation for approximately 150 thousand post-paid subscribers. # Project Implementation, UAT, Operations of CBOSSbcc billing system.

CityCell is Bangladesh's oldest mobile operator, with a subscriber base of 0.142 million. I was assigned to the IT department as a Team Leader of a project with the following responsibilities. # Preparing Software Requirements Specifications (SRS) through comprehensive analysis and collaboration across various information sources.# Project Management duties, directing the development of web-based solutions aimed at streamlining and optimizing the IT department's daily operational tasks.

# Contributed to the development of the "Ministry of Expatriates' Welfare and Overseas Employment Bangladesh" project by analyzing business requirements and implementing project scaling strategies. # Engaged in system architecture design, application development, and integration processes to ensure alignment with organizational goals and stakeholder needs.