Hello, I'm

Engr. Kaisar
Ahmed Khan

🇧🇩 Bangladesh's First RHCA • Linux Trainer since 2006

RHCA CEH CHFI CKA VCP NSE-4 MCSA

Engr. Kaisar Ahmed Khan receiving appreciation at IEEE MIST

First RHCA
in Bangladesh

18+ Years
Training

🔴 RHCA🔴 RHCE🔴 RHCSS🔴 RHCVA 🟠 CEH🟠 CHFI🔵 CKA 🟢 VCP-DCV🟢 VCP-NV🟡 NSE-4 🔷 MCSA⚪ ITIL-F 🔴 RHCA🔴 RHCE🔴 RHCSS🔴 RHCVA 🟠 CEH🟠 CHFI🔵 CKA 🟢 VCP-DCV🟢 VCP-NV🟡 NSE-4 🔷 MCSA⚪ ITIL-F

Kaisar Ahmed Khan at enterprise data center

Receiving award at IEEE MIST International Conference

18⁺ Years
Experience

About Me

Bangladesh's First
Red Hat Certified Architect

With a strong academic foundation in Computer Science & Engineering, I have built an extensive career in IT, supported by multiple globally recognised certifications — including Red Hat Certified Architect (RHCA), the first person in Bangladesh to achieve this title.

I have been a Linux trainer since 2006, delivering corporate training for MNCs, telecoms, banks, and government organisations including Bangladesh Army, Bangladesh Police CID, and Bangladesh Television (BTV).

Currently serving as Principal DevOps & Cloud Architect at ReliSource Inc. (USA-MNC), I specialise in automation, compliance, monitoring, deployment, and cloud architecture on Azure and AWS.

Principal DevOps & Cloud Architect — ReliSource Inc.

Sr. Faculty — Engineering Staff College, IEB

Ex-IT Security Consultant — UPAY BD & Ibn Sina Trust

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What I Teach

Training Expertise

Hands-on, industry-grade training delivered to IT professionals across Bangladesh and globally

Linux & Red Hat

RHCSA, RHCE, RHCSS — from fundamentals to enterprise-level administration. Training professionals across Bangladesh since 2006.

RHCSARHCERHCSSShell Scripting

DevOps & Automation

CI/CD pipelines, infrastructure as code, automation with Ansible, monitoring with Nagios/Cacti — enterprise DevOps practices.

AnsibleJenkinsGitNagios

Kubernetes & Containers

CKA-level Kubernetes administration, Docker containerisation, Helm, and container orchestration for production environments.

KubernetesDockerHelmCKA

Cloud Computing

Azure Administration, AWS fundamentals, cloud architecture, migration strategies and hybrid cloud deployments for enterprises.

AzureAWSCloud MigrationSaaS

Cybersecurity

Ethical hacking (CEH), digital forensics (CHFI), penetration testing for BPOs, payment gateways and government organisations.

CEHCHFIPen TestingForensics

Network & Virtualisation

VMware VCP (DCV, NV), Fortinet NSE-4, Cisco ASA, MikroTik — network security and virtualisation infrastructure.

VMwareFortinetCisco ASANSE-4

Credentials

Certifications & Credentials

12+ globally recognised certifications spanning Red Hat, EC-Council, VMware, Fortinet & Microsoft

Red Hat

RHCA Red Hat Certified Architect 🏆 First in Bangladesh — 2014

RHCERed Hat Certified Engineer

RHCSSRed Hat Certified Security Specialist

RHCVARed Hat Certified Virtualization Admin

EC-Council

CEHCertified Ethical Hacker

CHFIComputer Hacking Forensic Investigator

Cloud & Containers

K8s

CKACertified Kubernetes Administrator

MCSAMicrosoft Certified System Administrator

VMware & Network

VCP-DCVVMware Certified Professional – Data Centre

VCP-NVVMware Certified Professional – Network Virt.

NSE-4Fortinet Network Security Expert

ITIL-FITIL Foundation

Training Moments

Gallery & Achievements

Memorable moments from corporate training sessions, international conferences and award ceremonies

Receiving appreciation crest at IEEE MIST

IEEE MIST – 6th International Conference

Receiving appreciation crest from Brig. Gen. for conducting a session on Cloud Computing, organised by IEEE & MIST

IEEE ICEEICT 2024 – MIST

With Head of Department, Faculty Members and Volunteer Students at the Military Institute of Science and Technology

Bangladesh Police CID Graduation Ceremony

Bangladesh Police – Cyber Training Centre (May 2025)

Graduation Ceremony: Capacity Building of Supervising Officers in Investigation of Cybercrime Cases – CID, Bangladesh Police

Cyber Security Training – Bangladesh Police

Hands-on cyber security training for Senior Officers of Bangladesh Police at the Cyber Training Centre, CID

CID Cyber Training Centre – Award Ceremony

Award presentation at the Capacity Building graduation ceremony, Bangladesh Police Cyber Training Centre

Corporate Cyber Security Training

Group photo with participants from law enforcement and corporate sector after cybersecurity training

Professional IT Training Session

Corporate IT administration training session with professionals from leading organisations

University Seminar – Cloud Computing

Delivering lecture on Cloud Computing and Data Centre technology at a university seminar

Technology Exhibition

Participating in a major technology conference and exhibition

Enterprise Data Centre

Hands-on server administration and infrastructure work in an enterprise data centre environment

Corporate IT Training Lab

Group photo with participants at corporate IT training session

Official IT Facility Visit

Delegation visit to enterprise IT operations centre and data centre facility

What They Say

Student & Colleague Testimonials

Feedback from IT professionals, corporate leaders and global colleagues

"Kaisar sir is a Guru in the field of Information Technology. I have taken Linux/Unix platform training from him multiple times, which laid the foundation for my international IT career."

Md Mahfuzur Rahman Regional Cyber Security Specialist APAC, Brenntag Asia Pacific, Singapore

"I have been Kaisar sir's student since 2009 when I took the RHCE course. He has trained me three more times including Kubernetes. His teaching methodology is incredible — practical and simple."

Md. Samiul Huq Chief Technical Officer, Global Voice Telecom Ltd.

"Kaisar's Kubernetes training was very detailed and hands-on. He made it super simple with a combination of theory and practical labs. Highly recommended for anyone targeting CKA."

Md Omar Dip Chowdhury Sr. Architect Big Data & Cloud, Wipro Ltd. (Apple Computers project)

"I became RHCE certified in 2009 under Kaisar sir's guidance. Years later, his Kubernetes training was equally excellent — detailed, hands-on and deeply insightful."

Ahsan Kabir Head of IT Security Division, Dutch-Bangla Bank Limited

"I had the pleasure of working with Kaisar for 4+ years at Carrier Corporation on Azure cloud and automation projects. He is a dedicated, knowledgeable professional and an excellent collaborator."

Scott Leyden DevSecOps Engineer, Microsoft — Ex Carrier Corporation, USA

"I managed Kaisar for over 3 years in our SaaS production environment at Sensitech Inc. He consistently delivered high quality work with deep technical expertise in Linux and cloud infrastructure."

Jim Koellhoffer Product Cyber Security Lead, Sensitech – Carrier Corporation, USA

"The Docker and Kubernetes training by Mr. Kaisar Ahmed Khan was excellent. The solid theoretical foundation combined with practical hands-on labs made complex concepts very accessible."

Humayun IT Professional, Red Reply GmbH, Frankfurt am Main, Germany

Engr. Kaisar
Ahmed Khan

Bangladesh's First
Red Hat Certified Architect