Platform Engineer Kubernetes (Omnistore POS)

Position Summary :

BT is seeking a Kubernetes-focused DevOps/Platform Engineer to own the deployment, scaling, and operational reliability of the Omnistore POS platform's Central Layer running in a containerized Kubernetes environment.

This role owns the Kubernetes runtime across PROD, Pre-Prod, UAT, and Performance Testing environments, while Docker is used strictly within the CI/CD release pipeline (image builds, artifact packaging) rather than as a runtime orchestrator.

Key Responsibilities :

Kubernetes Runtime Management :

- Own configuration and lifecycle of worker nodes across environments (3 primary + 2 auto-scale for PROD; 2 + 1 auto-scale for UAT/PT and Pre-Prod)

- Manage pod scaling policies, targeting 2 replicas per service baseline with auto-scale rules tied to load patterns

- Coordinate with the Kubernetes platform provider on cluster/control plane management (cluster is provider-managed, not self-hosted)

- Maintain cluster-level infrastructure : load balancers, ingress controllers, firewalls, and RBAC policies

Release Pipeline (Docker-Scoped) :

- Build and maintain Docker-based CI/CD pipelines to package microservices (JAR/WAR) into container images

- Own image versioning, tagging, and promotion strategy from build through PROD deployment

- Ensure Docker is confined to build/packaging stages; no Docker Compose or standalone Docker runtime in any environment

Backend Services & Data Layer :

- Support containerized SymmetricDS pods for data synchronization across Central and Register layers

- Coordinate with infrastructure teams on standalone backend jobs running on Red Hat Linux (Data Loader, Middleware, Item Jobs, Safe Summary Job, Retry Job)

- Support MSSQL Server Active-Active cluster configuration for high availability across PROD, Pre-Prod, and UAT/PT

Environment Parity & Testing Support :

- Maintain environment parity across PROD, Pre-Prod, UAT, and Performance Testing per the defined worker node and auto-scale specs

- Support Pre-Prod bootstrap/master data loading processes sourced from UAT

- Partner with QA/Performance teams to validate auto-scaling and failover behavior under load

Operational Reliability :

- Monitor pod health, resource utilization, and auto-scaling triggers across worker nodes

- Lead incident response and root cause analysis for Kubernetes-related production issues

- Document runbooks for cluster operations, scaling events, and disaster recovery

Required Qualifications :

- 4+ years of hands-on Kubernetes administration in production environments

- Strong experience with Docker for image builds and CI/CD pipeline integration (not Docker Compose runtime)

- Experience with Java-based application stacks (Tomcat, OpenJDK 21, WAR/JAR deployments)

- Familiarity with database high-availability configurations (MSSQL Active-Active clustering or equivalent)

- Experience with data replication/synchronization tools (SymmetricDS or similar) in containerized environments

- Working knowledge of RBAC, load balancer configuration, and firewall/network policies in Kubernetes

- Experience supporting multi-environment deployments (PROD, Pre-Prod, UAT, Performance Testing) with environment parity requirements

Preferred Qualifications :

- Experience with retail POS systems or Omnistore specifically

- Experience with Red Hat Enterprise Linux (RHEL) server administration

- Background supporting hybrid on-prem/containerized modernization initiatives

- Familiarity with PostgreSQL (register-layer data stores)

- Experience working with offshore/vendor engineering partners

Tech Stack :

Orchestration :

- Kubernetes (worker nodes, auto-scaling, RBAC)

Containerization :

- Docker (build/release pipeline only)

Application Runtime :

- Tomcat 10.x, OpenJDK 21

Data Sync :

- SymmetricDS 3.16.10 (containerized pod)

Database :

- MSSQL Server (Active-Active cluster)

Backend Jobs :

- Red Hat Enterprise Linux (standalone Java jobs)

Register Layer :

- PostgreSQL 17