Senior DevOp's Engineer

JD- Devop's Manager Key Responsibilities DevOps & Infrastructure: - Build and manage CI/CD pipelines using Jenkins (declarative/scripted pipelines, multibranch, shared libraries) and implement GitOps-based delivery with ArgoCD (auto-sync, rollbacks, Helm/Kustomize integration) - Deploy and orchestrate containerized services using Docker and Kubernetes (StatefulSets, Deployments, Ingress, HPA, RBAC, network policies) - Deploy production databases on Kubernetes using StatefulSets with master-slave architecture: PostgreSQL (streaming replication, PgBouncer, WAL archiving, PITR backups) MongoDB (replica sets, sharding, oplog-based recovery) Redis (Sentinel for HA, Redis Cluster, RDB/AOF persistence) - Implement automated database backup strategies with scheduled jobs, offsite storage (S3/Azure Blob), retention policies, and restore drills - Manage cloud infrastructure on AWS (EC2, VPC, EKS, IAM, S3, Route53) and/or Azure (VMs, AKS, VNet, NSG, Blob Storage) - Configure Linux networking: iptables/nftables rules, static/dynamic routing (ip route), NAT/PAT, firewall policies, VLAN tagging - Perform disk partitioning (LVM, fdisk, parted), filesystem management, RAID setup, and storage capacity planning - Write automation scripts in Shell (Bash) and Python for provisioning, deployments, backups, and monitoring - Manage infrastructure as code using Terraform and Ansible; set up monitoring with Prometheus, Grafana, and ELK stack DevOps Skills: - Docker & Kubernetes: image builds, Compose, container networking, StatefulSets, Helm charts, Ingress, RBAC, autoscaling, cluster troubleshooting - CI/CD & GitOps: Jenkins (pipelines, shared libraries, webhooks, credentials), ArgoCD (Git sync, rollbacks, multi-cluster, health checks), Git branching strategies - Databases (deploy, replicate, backup, tune): PostgreSQL — master-slave replication, PgBouncer, pg_dump/pg_basebackup, PITR, query tuning MongoDB — replica sets, sharding, mongodump/mongorestore, oplog recovery, indexing Redis — Sentinel, Cluster, RDB/AOF persistence, eviction policies, pub/sub - Shell Scripting: advanced Bash (loops, functions, error handling), log parsing, cron jobs, systemd services; text processing with awk, sed, jq - Python: infrastructure automation (Boto3, Azure SDK), API integrations, backup/monitoring scripts, Jinja2 templating - Cloud: AWS (EC2, VPC, IAM, EKS, S3, ALB, Route53, CloudWatch) and/or Azure (AKS, VNet, NSG, Key Vault, Azure Monitor) - Networking: iptables (chains, NAT, DNAT/SNAT, port forwarding), ip route, subnetting/CIDR, DNS, TCP/IP, load balancing (L4/L7), VPN, troubleshooting (traceroute, mtr, ss, tcpdump) - Storage: LVM, fdisk/parted, ext4/xfs, fstab, RAID (mdadm), NFS - IaC & Monitoring: Terraform (modules, state, workspaces), Ansible (playbooks, roles, vault), Prometheus, Grafana, Alertmanager, ELK/EFK - Linux Admin: Debian/Ubuntu/CentOS/RHEL, systemd, process management, security hardening