
Raj Prajapati
Verified Expert in Engineering
Red Hat Enterprise Linux Developer
Noida, India
Toptal member since August 20, 2026
Across financial services and pharmaceuticals, Raj has spent 18 years building OpenShift platforms at enterprise scale. His toolkit centers on VMware vSphere, AWS, and Azure. While at American Express, Raj maintained 15 clusters supporting 200+ microservices with a 99.9% SLA.
Portfolio
Experience
- Red Hat Enterprise Linux - 10 years
- DevOps - 9 years
- Red Hat OpenShift - 9 years
- OpenShift - 8 years
- VMware vSphere - 8 years
- Ansible - 7 years
- Kubernetes - 6 years
- Amazon Web Services (AWS) - 5 years
Preferred Environment
AWS IoT, Azure, Ansible, Terraform, Red Hat Enterprise Linux, Red Hat OpenShift, ARO, Red Hat OpenShift Virtualization, Kubernetes, Cloud, Cloud Architecture, Cloud Engineering, Cloud Platforms
The most amazing...
...OpenShift platform I've architected supported 15 clusters and over 200 microservices for American Express with a 99.9% SLA.
Work Experience
OpenShift Consultant, Platform Architect
Capgemini
- Installed, configured, and managed OpenShift 4.x clusters on VMware vSphere and bare metal using IPI and UPI installation methods, MachineConfigOperator for node OS configuration, and OLM for operator lifecycle management.
- Executed OpenShift version upgrades and patching with zero production impact by using controlled MachineConfigPool rollout, pre-flight health checks, etcd backup before every upgrade, and post-upgrade validation against all clusters.
- Managed persistent storage across ODF/Ceph, vSAN CSI, NFS, and iSCSI CSI provisioners, including StorageClass design (RWO/RWX), dynamic provisioning, volume snapshot workflows, and PVC troubleshooting.
- Configured and enforced RBAC across 50+ multi-tenant engineering teams using ClusterRoles, RoleBindings, ServiceAccount scoping, SCC management, and Policy-as-Code (Kyverno/OPA) for cluster-wide security governance.
- Configured Ingress Controllers, OpenShift Routes (edge TLS, passthrough, re-encrypt), and external load balancers including wildcard DNS management, custom TLS certificate provisioning via cert-manager, and HAProxy tuning.
- Monitored cluster health using Prometheus and Grafana with custom PrometheusRules for etcd latency, node disk pressure, PVC capacity, and API server error rate.
- Troubleshot complex cluster issues such as OVN-Kubernetes network connectivity, DNS resolution failures, storage I/O bottlenecks, pod scheduling failures (resource constraints, taint/toleration, affinity), and container runtime (CRI-O) issues.
- Led P1/P2 incident management by coordinating cross-team resolution, maintaining stakeholder updates every 15 minutes, and delivering detailed RCA reports within 48 hours. Maintained 99.9% platform availability SLA.
- Integrated OpenShift with DevOps pipelines (ArgoCD, GitHub Actions, Jenkins) to enable GitOps-based deployment automation, reducing provisioning time from days to under 2 hours.
- Maintained platform security through etcd encryption at rest, audit logging to SIEM, vulnerability management, zero-trust network policies, and certificate rotation automation.
Platform Architect, Engineering Lead
GalaxE Solutions India
- Administered OpenShift 4.x clusters on AWS, Azure, and GCP including cluster upgrades, storage provisioning with CSI drivers, networking (OVN-Kubernetes, NetworkPolicies), and security hardening for five enterprise clients.
- Configured and managed Ingress Controllers, Routes, and load balancer integration. Designed multi-cluster network architecture and inter-cluster communication patterns.
- Delivered Prometheus/Grafana observability stacks with custom dashboards and alerting. Implemented HA/DR architecture with etcd backup automation and tested restore procedures.
OpenShift Consultant (Principal)
Opticca
- Administered enterprise OpenShift platform for American Express: 15 clusters supporting over 200 microservices with a 99.9% SLA. Owned cluster operations, upgrades, storage management, networking configuration, and RBAC enforcement.
- Managed persistent storage at scale using vSAN CSI and NFS CSI provisioners, including RWO/RWX StorageClasses, volume snapshot workflows, and troubleshooting PVC binding issues across 15 clusters.
- Configured and maintained Ingress Controllers with custom TLS certificates. Managed HAProxy-based load balancers and wildcard DNS for over 200 application routes.
- Led P1/P2 incident management by owning bridge calls, coordinating Red Hat and vendor support engagement, and delivering RCA reports to AmEx leadership within SLA. Maintained ITSM change management discipline for all production changes.
- Established RBAC policy standards, including SCCs and Policy-as-Code (OPA/Gatekeeper), adopted as a governance framework across six AmEx engineering divisions.
- Integrated OpenShift with DevOps pipelines (ArgoCD, Jenkins) to establish GitOps deployment standards adopted platform-wide. Reduced deployment cycle time by 50%.
OpenShift Architect, Infrastructure Lead
HCL Technologies
- Installed and managed OpenShift 3.x/4.x on VMware vSphere bare metal including cluster installation (IPI/UPI), node lifecycle operations (cordon/drain/replace), MachineConfigOperator usage, and cluster upgrade execution.
- Managed ODF/Ceph storage systems along with NFS CSI provisioners and iSCSI-backed PVCs involving dynamic provisioning processes, capacity monitoring activities, and PVC troubleshooting tasks. Implemented Velero for application backup.
- Troubleshot cluster networking issues involving OVN-Kubernetes or SDN technologies as well as DNS or connectivity problems. Configured NetworkPolicies for namespace isolation and egress control.
- Built SRE observability stack using Prometheus, Grafana, and ELK Stack. Improved MTTR by 35%.
OpenShift Platform Lead
Tata Consultancy Services
- Led OpenShift cluster administration for Eli Lilly globally over eight years on bare metal and VMware vSphere across USA, UK, and India, maintaining a 99.9% uptime SLA for mission-critical production workloads.
- Managed full cluster lifecycle, including installation processes, patching routines, upgrades execution, node replacement activities, etcd backup/restore operations, certificate rotation tasks, as well as storage expansion across global production.
- Configured Ingress Controllers plus Routes along with HAProxy load balancers or DNS. Managed TLS certificates for over 100 application routes. Troubleshot DNS or network connectivity issues across three geographies.
- Built Prometheus/Grafana/ELK observability stack enabling SLO/SLI monitoring capabilities with custom alerting mechanisms plus incident runbooks. Managed P1/P2 incidents delivering RCA reports to Eli Lilly global IT leadership.
- Managed RBAC or SCCs plus security hardening efforts and platform governance documentation used by Eli Lilly internal delivery teams.
- Built Ansible playbooks for RHEL node provisioning or OCP configuration, reducing provisioning time by 70%. Scaled the team from three to twelve engineers across three geographies.
Experience
AKS Platform Deployment
https://github.com/rprajapati1985/aks-platform-demoEnterprise OpenShift Deployment Across Hybrid Bare Metal and Cloud Infrastructure
My Role - I owned the platform architecture and led the deployment end-to-end—including infrastructure design, installation strategy, network and storage architecture, security model, and the operational handover that enabled their internal team to run it independently.
GPU-accelerated AI Platform on OpenShift AI with Model Serving and Drift Monitoring
My Role — I designed and built the AI platform layer—GPU infrastructure, model-serving runtime, deployment pipeline, and observability that made both cost and model health visible.
Education
Bachelor's Degree in Computer Science and Engineering
Uttar Pradesh Technical University - India
Certifications
Red Hat Certified Specialist in OpenShift Cluster Management (EX432)
Red Hat
Red Hat Certified Specialist in OpenShift Virtualization (EX316)
Red Hat
Red Hat Certified Developer in AI, OpenShift AI (AI267)
Red Hat
Red Hat Certified Specialist in OpenShift Automation and Integration (EX380)
Red Hat
Red Hat Certified Specialist in OpenShift Administration (EX280)
Red Hat
AWS Certified Solutions Architect Associate
Amazon Web Services
Microsoft Azure Administrator Associate
Microsoft
Certified Kubernetes Application Developer (CKAD)
Kubernetes
Certified Kubernetes Administrator (CKA)
Kubernetes
ITIL Foundation Certificate in IT Service Management
EXIN
Red Hat Linux Certified (RHCE)
Red Hat
Skills
Libraries/APIs
ConfigMap
Tools
Grafana, Jenkins, Velero, Amazon EKS, Azure Kubernetes Service (AKS), VMware vSphere, Slack, Source Code Control System (SCCS), Ansible, Terraform, AWS ELB, Claude, Vault, Splunk, Tekton, Helm, NGINX
Languages
Bash, Python, Bash Script
Paradigms
Role-based Access Control (RBAC), Microservices, DevOps, Software-defined Networking (SDN), Automation, DevSecOps
Platforms
OpenShift, AWS IoT, Azure, Red Hat OpenShift, Kubernetes, Amazon Web Services (AWS), Linux, Docker, AWS NLB, KVM, Red Hat Enterprise Linux, Kernel, KServe, NVIDIA CUDA
Storage
Microsoft Entra ID, Azure Storage
Frameworks
AWS HA
Other
NFS, Ingress Controllers, HAProxy, Prometheus, GitHub Actions, etcd, ARO, Red Hat OpenShift Virtualization, Azure administrators, OpenShift Administrator, Red Hat Advanced Cluster Management, RHACM, Backups, Deployement, Manisfest, Argo CD, Incident Response, Site Reliability Engineering (SRE), CI/CD Pipelines, Product Ownership, Cloud, Cloud Architecture, Cloud Engineering, Cloud Platforms, Disaster Recovery (DR), Infrastructure, Machine Learning Operations (MLOps), Observability, Open Policy Agent (OPA), RESTful Routes, Alertmanager, CRI-O, DNS, Gatekeeper, Amazon Route 53, Azure Virtual Networks, Linux Container, OpenShift Virtualization, OpenShift AI, Custome Notebook Images, Multicluster, Storage, API Management, APIs, Infrastructure as Code (IaC), Identity & Access Management (IAM), AI Tools, Graphics Processing Unit (GPU), AI DevOps, GCP, Compliance, OpenTelemetry, Computer Science, Networking, AI/ML Workloads, Red Hat Advanced Cluster Management for Kubernetes, Compliance Operator, RHACM Governance, ITIL 4, Patches & Updates, User Management, Linux Filesystem, Manifest, Applications, Node Clusters, Certified Kubernetes Administrator (CKA), Statefulset, Bare Metal (IPI/UPI), ODF/Cepf, Red Hat OpenShift AI (RHOAI), Data Science Pipelines, ModelMesh, NVIDIA GPU Operator
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
Share your needs
Choose your talent
Start your risk-free talent trial
Top talent is in high demand.
Start hiring