How to read this page
Each role below contains:
- What it is: one-line definition
- Core responsibilities: day-to-day tasks
- Skills & tools: what to learn/use
- Seniority & career path and typical KPIs
- Interview tip — what interviewers ask
1. DevOps Engineer
What it is
Generalist role responsible for automating build/deploy/test pipelines, maintaining environments, improving developer experience and reliability.
Core responsibilities
- Create & maintain CI/CD pipelines
- Automate provisioning & configuration
- On-call rotations for deployment incidents
- Collaborate with devs to reduce deployment friction
Skills & tools
Docker, Kubernetes basics, Jenkins/GitHub Actions, Terraform/CloudFormation, Bash/Python, Git, monitoring (Prometheus/Grafana)
Seniority & KPIs
Entry → Sr. DevOps. Measure by deployment frequency, lead time to recovery (MTTR), automated test coverage in pipelines.
Interview tip
Expect questions about pipeline design, Dockerfile mistakes, and how you would automate a manual release.
2. Cloud Engineer
What it is
Specialist who designs, implements and operates cloud infrastructure (IaaS/PaaS) across providers like AWS/Azure/GCP.
Core responsibilities
- Design cloud accounts, VPCs, networking, and identity
- Provision managed services (RDS, LB, S3, IAM)
- Optimize cost and capacity planning
- Manage multi-region and DR setups
Skills & tools
AWS (EC2, S3, VPC, IAM), Azure/GCP equivalents, Terraform, networking, cloud security, cost tools (AWS Cost Explorer)
Seniority & KPIs
Mid → Senior role. KPIs: infrastructure cost per feature, uptime, incident counts due to infra, provisioning MTTR.
Interview tip
Be ready to design a VPC with public & private subnets and explain routing/security group rules.
3. Site Reliability Engineer (SRE)
What it is
Engineer applying software engineering to operations. Focus on reliability, SLAs, observability and automation of operations.
Core responsibilities
- Define SLOs/SLAs, error budgets
- Automate incident responses and runbooks
- Performance tuning and capacity planning
- Implement observability (metrics, logs, traces)
Skills & tools
Prometheus, Grafana, ELK, Jaeger, PagerDuty, Kubernetes, Python/Go for automation, load testing tools
Seniority & KPIs
Mid → Principal. KPIs: uptime, error budget compliance, MTTR, mean time between failures (MTBF).
Interview tip
Expect scenario questions: “Service X is slow — how do you debug and mitigate?” — explain monitoring, tracing, and rollback steps.
4. Build & Release Engineer
What it is
Engineer focused on build systems, release orchestration, versioning, and packaging artifacts for distribution.
Core responsibilities
- Maintain CI servers and build agents
- Ensure reproducible builds and artifact promotion
- Coordinate release windows and versioning
- Support rollback procedures and hotfixes
Skills & tools
Jenkins, TeamCity, GitLab CI, Artifactory, Nexus, Maven/Gradle, npm, container registries
Seniority & KPIs
Junior → Mid. KPIs: build success rate, build time, release lead time, rollback incidents.
Interview tip
You may be asked to design a build pipeline or fix a flaky build/test — explain caching, isolation, and dependency pinning.
5. Platform Engineer
What it is
Builds and owns internal developer platforms (self-service infra) that standardize deployments and developer workflows.
Core responsibilities
- Design developer-facing APIs for deployment
- Create platform components (service catalog, pipelines)
- Maintain platform security and observability
Skills & tools
Kubernetes operators, Helm, Terraform, CI integrations, observability tools, API design
Seniority & KPIs
Mid → Senior. KPIs: developer onboarding time, number of self-service actions completed, platform uptime.
Interview tip
Show how you would expose a safe “deploy” API to developers and enforce policies automatically.
6. Infrastructure Engineer
What it is
Responsible for underlying hardware/networking/virtualization — on-prem or cloud infrastructure design and operations.
Core responsibilities
- Network architecture, load balancers, storage
- Provision servers and manage virtualization
- Backup, DR planning, and hardware lifecycle
Skills & tools
Networking (BGP, routing), load balancers, SAN/NAS, VMware/OpenStack, Terraform, cloud networking
Seniority & KPIs
Mid. KPIs include infrastructure availability, capacity utilization, and recovery time objectives (RTO).
Interview tip
Expect network design scenarios and questions about disaster recovery strategies.
7. CI/CD Engineer
What it is
A specialist focused entirely on automating build, test and deployment flows and maintaining CI infrastructure.
Core responsibilities
- Design and maintain pipelines
- Integrate test suites, security scans and artifact stores
- Scale CI agents and ensure reliability
Skills & tools
Jenkins, GitHub Actions, GitLab CI, CircleCI, Docker, build tools, test automation
Seniority & KPIs
Junior → Mid. KPIs: pipeline success rate, average build time, queue time.
Interview tip
Describe how you would parallelize test runs and reduce build times.
8. Kubernetes Engineer / K8s Administrator
What it is
Expert in running and operating Kubernetes clusters, workloads, networking, and upgrades.
Core responsibilities
- Cluster provisioning, upgrades and scaling
- Helm charts and operators creation
- Network policies, storage (PV/PVC) and RBAC management
Skills & tools
kubeadm/EKS/GKE/AKS, Helm, kubectl, CNI plugins (Calico), Prometheus, operators
Seniority & KPIs
Mid → Senior. KPIs: cluster availability, upgrade success rate, resource efficiency.
Interview tip
Be ready to explain how you would perform a rolling upgrade, backups, and handle node failures.
9. Automation Engineer
What it is
Focus on scripting and automating repetitive tasks — custom tooling, scheduled tasks, and CI helpers.
Core responsibilities
- Write automation scripts and small tools
- Automate routine ops work and housekeeping
- Build CLI tools and scheduled tasks
Skills & tools
Bash, Python, Go, Ansible, cron, CI scripting, API automation
Seniority & KPIs
Junior → Mid. KPIs: reduction in manual tasks, number of automated runbooks, hours saved.
Interview tip
Show examples of scripts you wrote to solve repetitive work and measure their impact.
10. Configuration Management Engineer
What it is
Maintains server state consistency using tools like Ansible/Chef/Puppet; ensures idempotent configuration.
Core responsibilities
- Create and maintain playbooks/recipes/manifests
- Ensure idempotency and testing of configs
- Manage secrets handling during config runs
Skills & tools
Ansible, Puppet, Chef, SaltStack, CI integration, testing frameworks (Molecule for Ansible)
Seniority & KPIs
Junior → Mid. KPIs: configuration drift incidents, successful orchestrations, time to provision.
Interview tip
Explain how you ensure playbooks are idempotent and safe for production rollouts.
11. Observability / Monitoring Engineer
What it is
Builds monitoring, logging and tracing systems and creates dashboards/alerts that reduce detection time.
Core responsibilities
- Define metrics and instrumentation
- Create dashboards, alerts and runbooks
- Manage log pipelines and retention
Skills & tools
Prometheus, Grafana, ELK/EFK, Loki, Jaeger, Fluentd, commercial tools (Datadog, NewRelic)
Seniority & KPIs
Mid. KPIs: alert noise rate, Mean Time To Detect (MTTD), dashboard coverage.
Interview tip
Prepare to design a dashboard for a web service showing latency, error rate, and throughput.
12. Security Engineer / DevSecOps
What it is
Integrates security into CI/CD and infrastructure; focuses on vulnerability scanning, secrets, IAM and compliance.
Core responsibilities
- Implement SCA, SAST, DAST in pipelines
- Manage secrets (Vault/Secrets Manager)
- Define IAM policies and least-privilege
Skills & tools
Vault, HashiCorp Boundary, Trivy, Snyk, Clair, AWS IAM, OPA, security scanning in CI
Seniority & KPIs
Mid → Senior. KPIs: number of critical vulnerabilities, time to remediate, audit pass rates.
Interview tip
Explain how to secure secrets and how you'd add a security gate in CI for production deploys.
13. Network Engineer (Cloud + On-prem)
What it is
Designs and maintains network topology for cloud & data center (routing, VPN, DNS, firewalls).
Core responsibilities
- VPC/subnet planning, peering and routing
- VPN and hybrid connectivity
- DNS, load balancing and firewall rules
Skills & tools
BGP, CIDR planning, AWS VPC, Azure VNet, network troubleshooting tools, firewalls
Seniority & KPIs
Mid. KPIs: network availability, latency, packet loss rates.
Interview tip
Be ready to diagram network flows and explain NAT, routing tables and security groups.
14. System Administrator / Linux Administrator
What it is
Operates and maintains servers: OS upgrades, user management, backups, and troubleshooting.
Core responsibilities
- Patch management and OS upgrades
- User and permission management
- Service/process monitoring and logs
Skills & tools
Linux, systemd, package managers, SSH, backup tools, monitoring basics, Ansible for automation
Seniority & KPIs
Junior → Mid. KPIs: system uptime, number of escalations, patch compliance.
Interview tip
Expect command-line troubleshooting tasks and questions on permissions, systemd and logs.
15. Reliability Automation Engineer
What it is
Focuses on automating reliability tasks: auto-healing, chaos engineering, and resiliency tooling.
Core responsibilities
- Write self-healing scripts and automation
- Run chaos experiments and resilience tests
- Automate failover and recovery
Skills & tools
Chaos Toolkit, AWS Fault Injection, scripting, monitoring, Kubernetes probes
Seniority & KPIs
Mid. KPIs: reduction in incidents, successful runbooks, recovery automation coverage.
Interview tip
Describe a resilience experiment and the metrics you would collect to prove improvement.
16. Release Manager
What it is
Coordinates releases across teams, manages release calendar and communications, and ensures compliance & readiness.
Core responsibilities
- Schedule releases and coordinate stakeholders
- Gate readiness & compliance checks
- Manage rollbacks and post-release reviews
Skills & tools
Jira/Confluence, release management tools, good communication and process skills
Seniority & KPIs
Mid. KPIs: release success rate, number of emergency hotfixes, lead time for releases.
Interview tip
Explain your release checklist and how you would handle a failed production deploy.
17. Cloud Architect
What it is
High-level designer of cloud architecture: multi-region strategy, security, cost, and reliability trade-offs.
Core responsibilities
- Design large-scale cloud architectures
- Set cloud governance, cost, and security policies
- Evaluate new services and patterns
Skills & tools
Cloud provider certifications, architecture patterns, networking, security and IaC (Terraform)
Seniority & KPIs
Senior/Principal. KPIs: architecture cost efficiency, time to provision new environments, audit results.
Interview tip
You will be asked to design fault-tolerant, multi-region services and justify trade-offs.
18. Infrastructure Architect
What it is
Designs on-prem and hybrid infrastructure, networking, DR and long-term capacity plans.
Core responsibilities
- Architect data center and hybrid-cloud setups
- Define backup/DR and scaling strategies
- Long-term capacity and hardware planning
Skills & tools
Virtualization (VMware), storage systems, network design, Terraform/OpenStack
Seniority & KPIs
Senior. KPIs: DR recovery time objectives achieved, resource utilization, cost planning accuracy.
Interview tip
Expect end-to-end architecture problems and disaster recovery planning scenarios.
19. AI Ops / MLOps Engineer
What it is
Focus on machine-learning lifecycle: model training, serving, monitoring, and data pipelines.
Core responsibilities
- Automate model training and deployment pipelines
- Monitor model drift and performance
- Manage specialized infra (GPUs, data lakes)
Skills & tools
Kubeflow, MLflow, Sagemaker, Airflow, Docker, Kubernetes, Python/PyTorch/TensorFlow
Seniority & KPIs
Mid. KPIs: model performance, deployment frequency, time to retrain, model drift detection rate.
Interview tip
Explain a full model pipeline from data ingestion to serving and monitoring.
20. Environment Engineer
What it is
Manages dev/stage/prod environments, test data, and ensures environments match production sufficiently for testing.
Core responsibilities
- Create reproducible dev/stage environments
- Manage seeding/masking of test data
- Ensure environment parity and troubleshooting
Skills & tools
Docker Compose, Terraform, Kubernetes namespaces, data masking tools, CI integration
Seniority & KPIs
Junior → Mid. KPIs: environment provisioning time, parity score vs production, frequency of env-related bugs.
Interview tip
Describe how you would create a cheap but realistic staging environment for the team.
21. Hybrid-Cloud Engineer
What it is
Works across multiple clouds and on-prem systems — connecting services and maintaining consistent policies.
Core responsibilities
- Design cross-cloud networking and identity
- Maintain consistent IaC across clouds
- Manage data movement and compliance
Skills & tools
Multi-cloud experience, Terraform, Vault, networking, cloud storage replication
Seniority & KPIs
Senior. KPIs: multi-cloud uptime, data sync latency, policy compliance.
Interview tip
Be prepared to explain identity federation and cross-account access patterns.
22. Containerization Engineer
What it is
Specialist in packaging applications (Docker/OCI), image optimization, registry management and security scanning.
Core responsibilities
- Build and optimize images and layers
- Manage container registries and retention policies
- Ensure images are scanned and signed
Skills & tools
Docker, buildpacks, image scanners (Trivy), registries (ECR, DockerHub), OCI standards
Seniority & KPIs
Junior → Mid. KPIs: image size reduction, vulnerability count, registry uptime.
Interview tip
You may be asked to optimize a Dockerfile and explain caching/layering strategies.
23. Automation Tester (CI-focused QA)
What it is
QA engineer who focuses on CI integration and building automated test suites that run in pipelines.
Core responsibilities
- Write automated test suites and ensure they run in CI
- Maintain test flakiness and speed
- Integrate tests with pipeline gating
Skills & tools
Selenium, Playwright, unit/integration test frameworks, CI tools, test reporting
Seniority & KPIs
Junior → Mid. KPIs: test coverage of critical paths, test flakiness, test runtime.
Interview tip
Explain how you would reduce flakiness and keep tests fast enough to run in CI.
24. IT Operations Engineer
What it is
Broad operations role often in smaller companies — runs routine ops, support, and maintenance tasks alongside DevOps work.
Core responsibilities
- Monitor systems, handle tickets and incidents
- Routine maintenance and deployments
- Support developers and have operational runbooks
Skills & tools
Linux, monitoring, ticketing systems, scripting, basic cloud operations
Seniority & KPIs
Entry → Junior. KPIs: ticket SLA compliance, incident resolution time.
Interview tip
You will be asked about operational troubleshooting and priority handling in incidents.