Jobs / India / AT&T Services INC
Sr Specialist System Engineering (Kubernetes, CI/CD Pipeline, Python automation)
AT&T Services INC · 🌍 IND:KA:Bangalore / Epip Area, Hoodi Village, Whitefield Rd - Eqp: Plot 111/112, Epip Area, Hoodi Village, Whitefield Road
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About the role
Job Responsibilities • Serve as the primary off ‑ shore DevOps/Infra support lead for Automation Tools and 4G/5G Core Network Simulators across NPRD/Labs and PROD environments. • Design, build, and maintain Azure DevOps CI/CD pipelines using a 3 ‑ tier ( hyper→macro→micro ) architecture to automate packaging, publishing, and deployments. • Develop and maintain Helm v3 (OCI) charts for application and infra components; package/publish artifacts to JFrog Artifactory OCI. • Automate Kubernetes deployments via Python orchestration (e.g., deploy.py), including config substitution, sequencing, and post ‑ deploy health checks. • Own secrets management end ‑ to ‑ end : Ansible Vault encryption, HashiCorp Vault runtime retrieval ( AppRole /KV), and token rotation with zero ‑ plaintext controls. • Provision and operate infrastructure: KVM/QEMU/ libvirt VM lifecycle on Simzone hosts; implement SR ‑ IOV passthrough and host networking configurations. • Author/ maintain Infrastructure ‑ as ‑ Code using OpenStack HEAT ( on ‑ prem VM provisioning) and Azure Bicep (NAKS/AON resources). • Configure advanced K8s networking and security: Multus NADs ( multi ‑ NIC pods), MetalLB L2 VIPs, Calico policies, SR ‑ IOV for performance I/O. • Manage storage and stateful services: Rook ‑ Ceph provisioning (RWX/RWO), local ‑ storage for single ‑ node clusters, PVC sizing, and storage class governance. • Build/ maintain large Ansible automation footprint (deployment, upgrades, backup/restore, mechID mgmt , vault operations, compliance tasks). • Operate AOSM lifecycle pipelines (nfPL0→nfPL4) to publish NF definitions, build deployment configs, deploy to NAKS, and onboard to HCEV. • Drive environment promotion (NPRD→PROD): release branching, versioning updates, quarterly release coordination, and consistency across lab/ pre ‑ prod /prod. • Maintain per ‑ instance configuration at scale (20+ K8s instances) using real ‑ parameters- values.json / input- values.json and enforce correctness across environments. • Implement observability and verification: deploy kube ‑ prometheus ‑ stack , integrate DevOps metrics (DORA Build Events API), and standardize service health checks. • Own certificate lifecycle management via cert ‑ manager and vault ‑ issuer patterns, including rotation workflows and Vault PKI integration. • Maintain supply ‑ chain security artifacts ( bom.yaml validation, images.json version tracking, reproducible builds with pinned versions). • Administer multi ‑ repo governance (30+ repos across GitHub + ADO): branch protections, PR governance, and cross ‑ repo dependency coordination. • Build AI ‑ assisted DevOps tooling (agentic workflow with specialized agents) to accelerate analysis, pipeline engineering, diagnostics, and self ‑ healing operations. • Provide incident response and operational troubleshooting: kubectl diagnosis, log analysis, NF status checks, backup/restore execution, and chaos testing support. Job Qualifications / Required Qualifications • Hands ‑ on experience operating Kubernetes platforms and production-grade CI/CD pipelines (Azure DevOps, GitHub/ GitOps ). • Strong automation skills in Python , Ansible, and Bash for deployment orchestration and operational tooling. • Deep experience with Helm 3 (OCI) packaging and release management; artifact publishing ( JFrog Artifactory OCI). • Expertise in secrets management ( HashiCorp Vault + Ansible Vault), credential rotation, and secure repo practices. • Experience with infrastructure provisioning and IaC (OpenStack HEAT and/or Azure Bicep) across hybrid environments. • Strong troubleshooting and incident management skills across K8s clusters, networking, and stateful services. • W