DevOps
Engineer
Roadmap

Every server on the internet runs Linux. You cannot be a DevOps engineer without mastering it. Learn the filesystem hierarchy, shell scripting with Bash, file permissions, process management, cron jobs, and package managers (apt, yum). Master essential tools: grep, awk, sed, curl, ssh, vim. Understand how services work with systemd. Set up your own Linux VM (Ubuntu) and live in the terminal daily — this is non-negotiable for everything that follows.

DevOps engineers debug network issues daily. Understand TCP/IP, DNS, HTTP/HTTPS, TLS/SSL deeply. Learn how load balancers, reverse proxies (Nginx, HAProxy), and firewalls work. Master subnetting, VPCs, NAT, and routing. Study OSI model layers. Know the tools: curl, netstat, nmap, tcpdump, dig, ping, traceroute. Understanding why a pod can't reach a service requires deep networking intuition — build it early.

In DevOps, even your infrastructure is code in Git. Go beyond push/pull/merge — master branching strategies (GitFlow, trunk-based dev), rebasing, cherry-pick, stash, and conflict resolution. Understand Git hooks for pre-commit automation. Learn GitHub/GitLab workflows: PRs, code reviews, protected branches, tags, and releases. Practice GitOps fundamentals — every change to your infra goes through a PR. This discipline separates professionals from amateurs.

Containers are the atomic unit of modern infrastructure. Master Docker fundamentals: images, containers, layers, volumes, networks, and the Docker daemon. Write production-grade Dockerfiles with multi-stage builds to minimize image size. Use Docker Compose for local multi-service development. Understand container security: non-root users, read-only filesystems, image scanning. Learn container registries: Docker Hub, GitHub Container Registry, AWS ECR. Everything you ship from here runs in containers.

CI/CD is the heart of DevOps. Start with GitHub Actions — workflows, jobs, steps, runners, secrets, environments, and reusable workflows. Learn pipeline best practices: automated testing, linting, security scanning (SAST/DAST), Docker builds, and deployment gates. Study GitLab CI for enterprise contexts. Understand deployment strategies: blue/green, canary, rolling updates. Learn Jenkins basics and ArgoCD for GitOps-driven Kubernetes deployments. A pipeline is your most powerful automation asset.

Kubernetes (K8s) is the most important DevOps skill in 2026. Understand the architecture: control plane, etcd, API server, scheduler, kubelet. Master core objects: Pods, Deployments, Services, ConfigMaps, Secrets, Ingress, PersistentVolumes. Learn Helm for templating and package management. Study RBAC for access control, NetworkPolicies for security, and HPA/VPA for autoscaling. Practice with Minikube/Kind locally, then move to EKS, GKE, or AKS. K8s certification (CKA) is the most valued cert in DevOps.

Manual cloud provisioning is a liability. IaC makes infrastructure reproducible, auditable, and version-controlled. Master Terraform: providers, resources, state management (remote state in S3 + DynamoDB locking), modules, workspaces, and Terragrunt for DRY configs. Learn Ansible for configuration management: playbooks, roles, inventories, Ansible Vault for secrets. Study Pulumi as a modern alternative (IaC in Python/TypeScript). Understand state drift, plan/apply workflow, and policy-as-code with Sentinel or OPA.

You can't fix what you can't see. Master the three pillars: Metrics with Prometheus (scraping, PromQL, alerting rules, Alertmanager), Logs with the ELK stack or Grafana Loki (structured logging, log aggregation, search), and Traces with OpenTelemetry + Jaeger or Tempo. Build beautiful Grafana dashboards. Set up SLOs/SLAs and error budgets. Learn incident management workflows. Study Datadog and New Relic for the enterprise side. On-call without observability is blind firefighting.

Security is no longer the security team's problem — it's yours. Learn secrets management with HashiCorp Vault: dynamic secrets, PKI, encryption as a service. Master container security: image scanning with Trivy/Snyk, distroless images, pod security standards. Study RBAC and IAM deeply across Kubernetes and AWS. Learn OPA/Gatekeeper for policy enforcement. Understand network segmentation, zero-trust architecture, and SOC 2 compliance fundamentals. Add security gates to every CI/CD pipeline.

DevOps interviews test three things: system design (design a CI/CD pipeline for a microservices app, design a highly available AWS architecture), troubleshooting (a pod is CrashLoopBackOff — walk me through debugging), and scripting (write a Bash/Python script to automate X). Certifications that matter: CKA (Certified Kubernetes Administrator), AWS Solutions Architect Associate, and HashiCorp Terraform Associate. Build 3 public projects: a full GitOps pipeline on EKS, a Terraform module library, and a monitored microservices setup with Prometheus + Grafana. Every project on GitHub with a detailed README.