Mahmud Ehsan Ahmed Email & Phone Number

Sunnyvale, Ca, Usa

DevOps Infrastructure Lead (Remote)2016-12 to CurrentHeadspin Inc, Sunnyvale, CA, USA- Maintain IaaS Networks and Servers. We must maintain 500+ Ubuntu on-premises and Cloud servers hosted in 160+ cities with 3000+ app testing devices including basic bash scripting.- Implement routing, VPN, and S2S tunnel on the Router and assign proper firewall security policy in every router.- Regularly upgrade our application using Git and the CI/CD pipeline.- Managing OpenVPN, Route53, EC2, S3 on AWS could.- Jira, Slack, Grafana are using to run the operation smoothly.- Communicate with customer for their new requirement and raised proper requirement to backend engineering team and implement new feature.- Controlling a centralized Ubiquity WIFI controller to manage worldwide 100+ access point.- Proactively communicate and coordinate with Management, Project, sales, CS teams.- Work flexible hours when necessary and be part of an 24/7 rotation- Deploy updates and fixes, and provide Level 2 technical support

Dhaka, Bangladesh

Airtel Bangladesh is one of the largest GSM telecom service providers in Bangladesh with 9 million subscribers. My current job role and responsibility are following:o Manage overall IT infrastructure operations and resolve intra and inter divisional issues. o Overlook operational management of business application infrastructure, databases, backup & restore, security, country wide Enterprise Data Network, Contact Center Technology, High End systems, Data Center and Corporate IT services. Liaise with supplier like Oracle, Cisco, HP, and SUN.o Lead the IT Infrastructure towards operational efficiency, cost optimization and customer satisfaction. o Prepare yearly IT budget and optimize resource utilization to keep the CAPEX/OPEX low.o Develop and maintain policies and processes for day to day operation, Change Management & Incident Management. Evaluate team members, arrange training if require, lead them to follow business processes.o Drive compliance to the BISP & BS27001 security norms ensuring smooth and secure IT operations.o Collaborate with the internal business & multiple outsource partners for ensuring timely delivery and seamless operations.o Develop SLA with strategic outsource (SO) partners and ensure KPIs are being met.o Manage day to day operation of Networks, Systems, Data Center, and Corporate IT services. Resolve intra and inter divisional issues.

Dhaka, Bangladesh

: Bangladesh Internet Exchange Ltd. is a leading Internet Service Provider in Bangladesh.Responsibilities: As an Asst. System Administrator I was taking the following responsibility:o Designing and configuring the total network (LAN, MAN and WAN) for this ISP. And also configure and maintaining Mail, Ftp, Web, Proxy, Bandwidth Manager and DNS Server.o Setup and Maintaining Gateway Server at all over the country POP to manage Internet and data services.o Implement security system and maintenance and also do the review the policy.o Compliance with security policies and adopt best practices of network security.o Antivirus Software implementation and Management for the network security.o Ensure that the key components of the workstations and servers are being monitored as such they are functioning in optimum level. o Had to install and configure different types of Communication Hardware, such as Cisco Router, Catalyst Switch, BlueCoat Cache Server, Canopy, P-Com, Microtic radio device, Cisco Wireless etc. also install 50+ DVB link in various location.o Helped maintain and troubleshoot LAN performing different levels of back-up methodology and full-fledged optimization

Chittagong, Bangladesh

: Karita System Ltd is an Internet Service Provider with primary objective of providing internet service to people. Responsibility: As a System Administrator, I was take care the following responsibility:Implement the total Data Network on this organization with using Cisco Router and Switches. DSL, Radio Link was using for interconnect POP.Configure and maintain DNS, Squid Proxy, Mail Server, and Web Server in Linux environment, and for security, we were using ACL in Cisco Router and IPTABLS in Linux.

Dhaka, Bangladesh

Dhakarchithi is an Internet Service Provider with primary objective of providing internet service to people by Dial up. Responsibility: As a system administrator, I was responsible to manage full technical team

Master'S Degree, Telecommunication, Thesis Pending

Master'S Degree, Management, 2Nd Class