- Sat Nov 29, 2025 5:16 pm#9399
Preparation Guide for the Position of Officer, Core System – Technology Division at BRAC Bank PLC
1. Understand the Role and Its Core Domains
• Container orchestration – design, deployment, operation, and troubleshooting of Kubernetes and Red Hat OpenShift clusters (on‑premise, cloud, hybrid).
• Multi‑cloud management – day‑to‑day work with AWS, Azure, GCP and OCI, including cost‑optimization and security.
• Infrastructure as Code – Terraform, Ansible, Helm for provisioning and lifecycle management.
• CI/CD & GitOps – building pipelines with Jenkins, GitLab, Tekton or Argo CD and applying GitOps principles.
• DevSecOps – embed security (RBAC, network policies, image scanning) into the platform and pipelines.
• Observability – Prometheus, Grafana, ELK stack for monitoring, logging and alerting.
• High‑availability, disaster‑recovery, capacity planning and performance tuning.
2. Technical Skill‑Building Roadmap
a) Kubernetes / OpenShift
– Install a local cluster (Kind, Minikube) and an OpenShift local cluster (CodeReady Containers).
– Practice creating namespaces, deployments, stateful‑sets, daemon‑sets, custom resources.
– Configure RBAC, NetworkPolicies, PodSecurityPolicies or OCP‑specific security controls.
– Simulate real‑world failures (node loss, pod crash, API‑server downtime) and recover using built‑in tools.
b) Multi‑Cloud Fundamentals
– Set up free‑tier accounts on AWS, Azure, GCP and OCI.
– Deploy a simple micro‑service (e.g., Node.js + MongoDB) on each platform using managed Kubernetes (EKS, AKS, GKE, OKE).
– Compare IAM models, networking (VPC, subnets, peering), and storage options.
– Use cloud cost calculators to practice rightsizing and budgeting.
c) Infrastructure as Code
– Write Terraform modules for VPC, subnets, IAM roles, EKS/AKS/GKE clusters.
– Use Ansible playbooks to configure Linux nodes (sysctl, firewalld, package installs).
– Package Helm charts for the sample micro‑service; experiment with values overrides and chart dependencies.
d) CI/CD & GitOps
– Build a Jenkins pipeline that builds Docker images, pushes to a registry, and triggers a Helm upgrade.
– Replicate the same flow in GitLab CI, Tekton tasks, and Argo CD applications.
– Implement automated security scans (Trivy, Clair) and policy enforcement (OPA/Gatekeeper).
e) Observability & Logging
– Deploy Prometheus and Grafana in a cluster; create custom dashboards for CPU, memory, request latency.
– Install the ELK stack (or EFK with Fluentd) and ship container logs; set up alerts for error spikes.
f) Disaster Recovery & Capacity Planning
– Create a backup strategy using Velero for Kubernetes resources and persistent volumes.
– Run load‑generation tools (k6, Locust) to profile cluster scaling behavior; document scaling thresholds.
3. Certifications to Prioritize
– Certified Kubernetes Administrator (CKA) – validates core cluster operations.
– Certified Kubernetes Application Developer (CKAD) – focuses on workload deployment.
– Certified Kubernetes Security Specialist (CKS) – deepens security knowledge.
– Red Hat OpenShift Administration (EX294) – proves expertise on OCP.
– AWS Certified Solutions Architect – Associate (or higher) – demonstrates cloud architecture skill.
If time is limited, aim first for CKA and an AWS Associate level, then add OpenShift or CKS as secondary targets.
4. Real‑World Project Portfolio
• End‑to‑end deployment of a multi‑tier application on a hybrid environment (on‑prem OpenShift + cloud EKS).
• Terraform‑managed, multi‑region infrastructure with automated cluster upgrades.
• GitOps workflow using Argo CD with automated compliance checks.
• Security hardening project: implement RBAC, PodSecurityPolicies, image scanning, and audit logging; produce a compliance report.
• Cost‑optimization case study: baseline cloud spend, apply rightsizing, implement autoscaling, and show % savings.
Host the code on GitHub/GitLab, include detailed README, architecture diagrams, and CI/CD configuration files.
5. Resume and Application Tailoring
– Highlight 2–4 years of direct experience with Kubernetes/OpenShift, multi‑cloud, IaC and CI/CD.
– List specific tools (Terraform, Ansible, Helm, Jenkins, GitLab, Tekton, Argo CD, Prometheus, Grafana, ELK).
– Mention any relevant certifications, even if in progress (“CKA – exam scheduled Dec 2025”).
– Quantify achievements (e.g., “Reduced deployment time by 45 % through automated Helm releases”, “Saved $12 K monthly by rightsizing AWS resources”).
– Add a “Key Projects” section with concise bullet points describing the end‑to‑end solutions you built.
6. Interview Preparation
a) Technical Deep‑Dive
– Be ready to walk through a cluster setup from scratch, explaining each component (etcd, controller‑manager, scheduler, kube‑proxy).
– Prepare to discuss upgrade strategies (rolling, canary) and how you handled version skew.
– Review networking concepts: CNI plugins, Service CIDR, Ingress controllers, Service Mesh basics.
– Understand security layers: RBAC, PodSecurityPolicies/OPA, image signing, secrets management (Vault, sealed‑secrets).
b) Scenario‑Based Questions
– “How would you troubleshoot a pod that stays in Pending due to insufficient resources?”
– “Describe a Disaster Recovery plan for a stateful application on OpenShift.”
– “Explain how you would implement GitOps for a micro‑service architecture across AWS and Azure.”
c) Behavioral Assessment
– Prepare examples showing customer‑centric mindset, teamwork in cross‑functional projects, and handling tight deadlines.
– Align responses with BRAC Bank’s values: integrity, inclusiveness, continuous learning, and purpose‑driven work.
7. Soft‑Skills and Cultural Fit
– Practice clear, concise communication – important when interacting with developers, security teams, and business stakeholders.
– Demonstrate a proactive learning habit: mention recent webinars, conferences, or open‑source contributions.
– Show awareness of banking‑sector constraints (regulatory compliance, data residency) and how you would embed those into platform design.
8. Final Checklist Before Applying
☐ Updated resume with targeted keywords (Kubernetes, OpenShift, Terraform, CI/CD, multi‑cloud, security).
☐ Cover letter (optional) that references BRAC Bank’s mission and explains why you are excited about the core‑system role.
☐ List of certifications and their status.
☐ Links to GitHub/GitLab repositories showcasing relevant projects.
☐ Verify all personal details (contact, location – Dhaka) are correct.
9. Ongoing Preparation (Post‑Application)
– Set a daily habit of reading recent releases from CNCF, Red Hat, and cloud providers.
– Join community forums (Kubernetes Slack, OpenShift Commons) to stay updated on best practices.
– Keep a “cheat sheet” of common kubectl, oc, terraform, and helm commands for quick reference.
By following this structured preparation plan, you will build the technical depth, practical experience, and professional presentation needed to compete effectively for the Officer, Core System position at BRAC Bank PLC. Good luck!
1. Understand the Role and Its Core Domains
• Container orchestration – design, deployment, operation, and troubleshooting of Kubernetes and Red Hat OpenShift clusters (on‑premise, cloud, hybrid).
• Multi‑cloud management – day‑to‑day work with AWS, Azure, GCP and OCI, including cost‑optimization and security.
• Infrastructure as Code – Terraform, Ansible, Helm for provisioning and lifecycle management.
• CI/CD & GitOps – building pipelines with Jenkins, GitLab, Tekton or Argo CD and applying GitOps principles.
• DevSecOps – embed security (RBAC, network policies, image scanning) into the platform and pipelines.
• Observability – Prometheus, Grafana, ELK stack for monitoring, logging and alerting.
• High‑availability, disaster‑recovery, capacity planning and performance tuning.
2. Technical Skill‑Building Roadmap
a) Kubernetes / OpenShift
– Install a local cluster (Kind, Minikube) and an OpenShift local cluster (CodeReady Containers).
– Practice creating namespaces, deployments, stateful‑sets, daemon‑sets, custom resources.
– Configure RBAC, NetworkPolicies, PodSecurityPolicies or OCP‑specific security controls.
– Simulate real‑world failures (node loss, pod crash, API‑server downtime) and recover using built‑in tools.
b) Multi‑Cloud Fundamentals
– Set up free‑tier accounts on AWS, Azure, GCP and OCI.
– Deploy a simple micro‑service (e.g., Node.js + MongoDB) on each platform using managed Kubernetes (EKS, AKS, GKE, OKE).
– Compare IAM models, networking (VPC, subnets, peering), and storage options.
– Use cloud cost calculators to practice rightsizing and budgeting.
c) Infrastructure as Code
– Write Terraform modules for VPC, subnets, IAM roles, EKS/AKS/GKE clusters.
– Use Ansible playbooks to configure Linux nodes (sysctl, firewalld, package installs).
– Package Helm charts for the sample micro‑service; experiment with values overrides and chart dependencies.
d) CI/CD & GitOps
– Build a Jenkins pipeline that builds Docker images, pushes to a registry, and triggers a Helm upgrade.
– Replicate the same flow in GitLab CI, Tekton tasks, and Argo CD applications.
– Implement automated security scans (Trivy, Clair) and policy enforcement (OPA/Gatekeeper).
e) Observability & Logging
– Deploy Prometheus and Grafana in a cluster; create custom dashboards for CPU, memory, request latency.
– Install the ELK stack (or EFK with Fluentd) and ship container logs; set up alerts for error spikes.
f) Disaster Recovery & Capacity Planning
– Create a backup strategy using Velero for Kubernetes resources and persistent volumes.
– Run load‑generation tools (k6, Locust) to profile cluster scaling behavior; document scaling thresholds.
3. Certifications to Prioritize
– Certified Kubernetes Administrator (CKA) – validates core cluster operations.
– Certified Kubernetes Application Developer (CKAD) – focuses on workload deployment.
– Certified Kubernetes Security Specialist (CKS) – deepens security knowledge.
– Red Hat OpenShift Administration (EX294) – proves expertise on OCP.
– AWS Certified Solutions Architect – Associate (or higher) – demonstrates cloud architecture skill.
If time is limited, aim first for CKA and an AWS Associate level, then add OpenShift or CKS as secondary targets.
4. Real‑World Project Portfolio
• End‑to‑end deployment of a multi‑tier application on a hybrid environment (on‑prem OpenShift + cloud EKS).
• Terraform‑managed, multi‑region infrastructure with automated cluster upgrades.
• GitOps workflow using Argo CD with automated compliance checks.
• Security hardening project: implement RBAC, PodSecurityPolicies, image scanning, and audit logging; produce a compliance report.
• Cost‑optimization case study: baseline cloud spend, apply rightsizing, implement autoscaling, and show % savings.
Host the code on GitHub/GitLab, include detailed README, architecture diagrams, and CI/CD configuration files.
5. Resume and Application Tailoring
– Highlight 2–4 years of direct experience with Kubernetes/OpenShift, multi‑cloud, IaC and CI/CD.
– List specific tools (Terraform, Ansible, Helm, Jenkins, GitLab, Tekton, Argo CD, Prometheus, Grafana, ELK).
– Mention any relevant certifications, even if in progress (“CKA – exam scheduled Dec 2025”).
– Quantify achievements (e.g., “Reduced deployment time by 45 % through automated Helm releases”, “Saved $12 K monthly by rightsizing AWS resources”).
– Add a “Key Projects” section with concise bullet points describing the end‑to‑end solutions you built.
6. Interview Preparation
a) Technical Deep‑Dive
– Be ready to walk through a cluster setup from scratch, explaining each component (etcd, controller‑manager, scheduler, kube‑proxy).
– Prepare to discuss upgrade strategies (rolling, canary) and how you handled version skew.
– Review networking concepts: CNI plugins, Service CIDR, Ingress controllers, Service Mesh basics.
– Understand security layers: RBAC, PodSecurityPolicies/OPA, image signing, secrets management (Vault, sealed‑secrets).
b) Scenario‑Based Questions
– “How would you troubleshoot a pod that stays in Pending due to insufficient resources?”
– “Describe a Disaster Recovery plan for a stateful application on OpenShift.”
– “Explain how you would implement GitOps for a micro‑service architecture across AWS and Azure.”
c) Behavioral Assessment
– Prepare examples showing customer‑centric mindset, teamwork in cross‑functional projects, and handling tight deadlines.
– Align responses with BRAC Bank’s values: integrity, inclusiveness, continuous learning, and purpose‑driven work.
7. Soft‑Skills and Cultural Fit
– Practice clear, concise communication – important when interacting with developers, security teams, and business stakeholders.
– Demonstrate a proactive learning habit: mention recent webinars, conferences, or open‑source contributions.
– Show awareness of banking‑sector constraints (regulatory compliance, data residency) and how you would embed those into platform design.
8. Final Checklist Before Applying
☐ Updated resume with targeted keywords (Kubernetes, OpenShift, Terraform, CI/CD, multi‑cloud, security).
☐ Cover letter (optional) that references BRAC Bank’s mission and explains why you are excited about the core‑system role.
☐ List of certifications and their status.
☐ Links to GitHub/GitLab repositories showcasing relevant projects.
☐ Verify all personal details (contact, location – Dhaka) are correct.
9. Ongoing Preparation (Post‑Application)
– Set a daily habit of reading recent releases from CNCF, Red Hat, and cloud providers.
– Join community forums (Kubernetes Slack, OpenShift Commons) to stay updated on best practices.
– Keep a “cheat sheet” of common kubectl, oc, terraform, and helm commands for quick reference.
By following this structured preparation plan, you will build the technical depth, practical experience, and professional presentation needed to compete effectively for the Officer, Core System position at BRAC Bank PLC. Good luck!
