• Participate in the choice of a programming language for describing algorithms and data structures.• Write terraform code for staging and prod environment for various components on AWS infrastructure.• Develop technology for solving problems at all stages.• Launch debugged programs and enter initial data determined by the conditions of the tasks.• Integrate software components.• Check programs based on logical analysis.• Determine the set of data that provides a solution to the maximum number of requirements included in the program; do the work to prepare it for debugging.• Participate in software maintenance.

● Manage all aspects of DevOps for Rosebay group of companies and customers● Head a combined DevOps and production support function.● Create, manage and implement policies (both technical and people-focused) to ensure a properDevOps culture in the organization as well as project specific policies as required by customers.● Interact with customers and provide proper guidelines for operational IT security.● Transform development processes for existing applications software development into a ContinuousDelivery-driven SDLC, influencing and educating development teams to adjust working practices inalignment with modern day software development and delivery approaches (CI, CD, AWS, Azure).● Infrastructure (mainly Azure and AWS), continuous delivery adoption/transformation, Production andNon-Prod support, as well as planning and coaching, are key responsibilities of this role.● Design and implement container based approaches to ensure enterprise grade deliverables withsufficient reliability and availability.● Assist the different IT teams at Rosebay (fintech, blockchain and AI) in designing, creating, managingand maintaining IT applications and systems.● Ensure IT security of Rosebay projects via proper adherance to standards (CIS, OWASP etc).● Developed an Open-sourced Monitoring system using Prometheus, Grafana and Alertmanager which will trigger alerts and notify the clients based on Docker, Kubernetes and Docker Swarm based architecture.● Install and maintain secure in-house containerized mail server(Mailcow).

• Actively plan, manage and update cloud infrastructure on AWS for services such as EC2, S3, and RDS, including backups, patches, and scaling.• Built and deployed Docker containers to break up monolithic app into microservices, improving developer workflow, increasing scalability, and optimizing speed.• Automated build and deployment using Jenkins to reduce complexity and improve production processes.• Installed and configured Nagios to constantly monitor network bandwidth, memory usage, and hard drive status.• Managed GitHub repositories and permissions, including branching and tagging.• Providing support towards client infrastructure, troubleshooting issues based on SLA and ensure system uptime accordingly.

• Provide 2nd level support to clients and stakeholders by configuring and troubleshooting their network and server components and backbone connectivity according to SLA.• Mount and install servers with appropriate software and services according to customers' needs.• Ensuring Networking best practice while installing routers and switches for stakeholders.• Check client connectivity and perform operational and configuration troubleshooting on POP end Switches and Routers• Installing and troubleshooting DNS, Mail, NagiOS, and different clients servers to ensure seamless service.• Handling critical issues with utmost priority within the shortest period and forecast expansion plans accordingly.• Allowing and Blocking IP prefix over BGP using Juniper devices. • Network planning and built diagrams of connectivity using Microsoft Visio for future reference.• Blocking URLs of web sites and maintaining policy structure as per regulatory guidelines.

• Fault Management of Core Network• Fault management of HUAWEI Soft Switch & Universal Media Gateway by iManager2000.• Fault management on status of CPU, PCM, Signaling & different trunk circuits of switches by iManager2000.• Pulling CDRs using IGWB client and crosschecking between actual billing panel and successful CDRs.• Fault Management of Transmission Network.• Fault management of PDH links, SDH links, multiplexers & DCN.• Performs the necessary first line maintenance of PDH & SDH links.• Performs the necessary first line maintenance of OSN (HUAWEI) multiplexer by U2000.• Check internal & external alarms for OSN Multiplexers.• Performing call tests and maintain log.Report Writing Skill:• Maintain all types of alarm log.• Prepare Network Outage Reports on daily, weekly & monthly basis.• Make various reports based on network faults.

• Understanding IP Telephony System and NOC of Dhakacom Limited.• Understanding Elastix,FreePBX and its elements.• Understanding and Implementing Elastix and Vicidial Call Center Solution.• Making Report.