Professional Experience
November 2022 - Present
Cioplenu GmbHSenior Infrastructure Engineer
- Migrated from standalone K8s manifests to Helm charts with private OCI registry implementation
- With the introduction of Helm, helped reduce human dependency up to 90%
- Pioneered infrastructure automation through IaC and reduced infrastructure deployment time by 85%
- Reduced build time up to 85% by introducing hybrid distributed build system
- With the introduction of ArgoCD, helped reduce application deployment time and effort with over 90%
- Restructured in-use DevOps tools to be managed as code
- Introduced Kube Prometheus Stack for metrics monitoring
- Kubernetes log management with filebeat/fluentbit, and Elastic Cloud Service
June 2022 - October 2022
Deutsche Börse AGSenior DevOps Engineer
- Service management for microservice-based software deployment
- Kubernetes cluster (EKS) management in AWS
- Maintain and create new Helm charts
- Automated infrastructure deployment and provision with Terraform
- CI/CD pipeline management with Circle CI, Concourse and ArgoCD
- Infrastructure Monitoring with Cloudwatch
- Kubernetes Monitoring with Prometheus, Grafana, and Elasticsearch
June 2021 - May 2022
Risk Ident GmbHDevOps Engineer
- On-Prem multiple Kubernetes cluster deployment and management
- On-Prem platform service deployment and management
- Increased deployment efficiency with Helm charts
- On-Prem infrastructure configuration management with Ansible
- Designed on-demand scalable distributed build system
- Lead a team hands-on for developing and deploying distributed build system
- Automated infrastructure provisioning (IaC) with Terraform
- Kubernetes monitoring with Prometheus and Grafana
- Kubernetes log management with self-hosted Elasticsearch, Fluentbit and Fluentd
Nov 2018 - May 2021
NTT Germany AG & Co. KGDevOps Engineer
- Project planning with proper guidance on system options, risk, impact and cost vs. benefit
- Developed distributed REST API solutions for complex s/w and h/w ecosystems
- Designed and implemented code quality assurance system and policies
- Scalable artifact management system for the team and enterprise
- Refactored existing system into IaC
- Trained junior newcomers to become DevOps Engineers
- Containerization with Docker and container orchestration with Kubernetes
- System and Application monitoring with Prometheus and Grafana
- Log management with Splunk forwarder and Splunk
May 2017 - Nov 2018
Fraunhofer FOKUSDevOps Engineer
- Implementation and configuration of SALTSTACK in virtual machines
- Create custom SALTSTACK formula, module, grains and pillars
- Implement reverse proxy and load balancing with NGINX
- Create user-defined parameters for ZABBIX agent
- Write shell and python automation scripts
- Network automation using Saltstack and NAPALM
- Write automation modules for configuring low level managed network switches
Jul 2013 - Jul 2015
Banglalink™ Digital Communications Ltd.QoS Associate Engineer
- Developed back end data processing software using Python
- Developed front end web application for visualizing data & report generation
- Automated system wide tasks for in-house and FTP servers using Python
- Created KPI formula & database structures
- Created MySQL database schema & queries for data processing
- Administrated RHEL & Debian based Linux servers (60+ HP G7)
Mar 2012 - Jun 2013
Banglalink™ Digital Communications Ltd.Performance Jr. Engineer
- Administrated RHEL & Debian based Linux servers (60+ HP G7)
- Automated tasks for in-house servers using Python & Java
- Created and administrated Oracle 10g database for user based data
- Troubleshooted Windows 2012 servers for H/W or S/W problems
- Created network topology for network optimization servers
- Maintained, updated & extended in-house softwares developed in Java
Container Orchestration
Kubernetes
85%
Docker
85%
Infrastructure as Code (IaC)
Terraform
85%
Ansible
85%
Cloud Administration
Microsoft Azure
85%
Amazon Web Services (AWS)
75%
Google Cloud Platform (GCP)
55%
Cloud Native Deployment
Helm
85%
ArgoCD
85%
OCI Registry Administration
85%
Automation
Jenkins
95%
SonarQube
85%
JFrog Artifactory
85%
Sonatype Nexus3
80%
Programming Skills
Python
85%
Shell Scripting
70%
VCS Administration
Gitlab
85%
GitHub Enterprise
80%
Gitea
90%
Language Skills
German A1
25%
English
90%
Bangla
98%