DEVOPS ENGINEER 1

Advanced Linux administration (Ubuntu 22.04)
Deep Ansible expertise
PKI / TLS / mTLS and certificate lifecycle management
Networking and firewall fundamentals
NiFi, ZooKeeper, Registry deployment know‑how
Monitoring stack experience (Prometheus, Grafana, Alertmanager)

Responsibilities & detailed tasks

Install and harden Ubuntu OS (baseline security, users, logging, updates)
Configure networking, DNS, routing validation, firewall rules
Set up & operate internal Certificate Authority (CA hierarchy, policies)
Generate and distribute all server / client certificates via Ansible
Deploy and configure ZooKeeper ensemble, NiFi cluster, NiFi Registry
Deploy and secure OpenLDAP (LDAPS), InfluxDB v3, Prometheus / Grafana / Alertmanager
Implement full Ansible automation (roles, tasks, inventories, idempotency)
Validate TLS / mTLS and solve SAN errors, handshake issues, hostname mismatches
Support DevOps Engineer 2 & NiFi Engineer during integration and testing

DEVOPS ENGINEER 2

Strong Linux administration
Solid Ansible experience (roles, variables, Vault)
Understanding of TLS, tokens, certificates
Familiarity with NiFi and monitoring stacks

Responsibilities & detailed tasks

Assist DevOps 1 in OS baseline, firewall, and network configuration
Build Ansible roles for: LDAP, InfluxDB, monitoring stack
Configure Prometheus scrape jobs (mTLS) and Grafana datasources
Build initial monitoring dashboards for cluster and flow metrics
Generate InfluxDB write / read tokens; assist with secure parameterisation
Test automation flows (redeploy, partial rebuild, rollback capability)
Support flow rollout and troubleshoot connectivity or cluster‑related issues

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