Nadiah Shajahan
Open to work5 years experienceDevOps Engineer
DevOps Engineer | Kubernetes & Cloud Infrastructure | CI/CD Automation
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Skills & Technologies
26 skillsGitHub Activity Evidence
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Work Experience
Technology Analyst (DevOps Engineer)
Infosys Limited
- Managed and maintained Kubernetes environments across production and non-production, achieving high availability for critical business workloads serving thousands of users.
- Resolved a critical multi-service production outage affecting Kafka, PostgreSQL, and Elasticsearch simultaneously, restoring full system operation and reducing downtime by an estimated 60% compared to prior incidents.
- Led migration from hostPath to Longhorn distributed storage, eliminating node-dependency failures and improving storage resilience across the cluster.
- Stabilized a chronically unstable Kubernetes environment through proactive Prometheus/Grafana monitoring, root-cause analysis, and preventive automation — reducing recurring incidents by ~40%.
- Built and maintained end-to-end CI/CD pipelines using Jenkins, automating Docker image builds, testing, and multi-environment deployments — cutting manual deployment effort by approximately 50%.
- Implemented GitOps-based delivery using ArgoCD and Helm, enabling consistent, auditable, and automated releases across all environments.
- Deployed and operated distributed systems including Kafka, Elasticsearch, PostgreSQL, Camunda, and OrientDB, ensuring high availability through replication and proactive tuning.
- Supported the Infosys ISNA internal platform, resolving Keycloak authentication failures, access control misconfigurations, and alerting system issues to maintain SLA compliance.
- Automated repetitive operational tasks using Bash scripting, saving an estimated 5+ hours of manual effort per week.
- Performed Kubernetes cluster upgrades and Linux server maintenance with zero unplanned downtime.
- Troubleshot Kubernetes networking issues across CoreDNS and kube-proxy layers, reducing mean time to resolution (MTTR) for network-related incidents.
- Migrated on-premises workloads to Microsoft Azure, improving infrastructure flexibility and reducing provisioning time from days to hours using Terraform automation.
- Built and maintained Azure DevOps CI/CD pipelines for multiple applications, enabling continuous integration and reliable delivery cycles.
- Automated infrastructure provisioning with Terraform, enabling repeatable and scalable cloud environment setup.
- Managed end-to-end SSL certificate lifecycle for all production services, ensuring zero certificate-related outages.
- Conducted performance testing using JMeter to validate application reliability under load before production releases.
- Monitored and optimized application performance across cloud and on-premises environments using Dynatrace and custom dashboards.
- Managed and tuned Redis instances for caching performance, resolving configuration issues and improving application response times.
- Developed Bash/Shell automation scripts, reducing manual operational workload across cloud infrastructure tasks.
Projects
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Leaderboard Standings
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Assessment Highlights
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AI Collaboration Score
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Role Compatibility Profile
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Achievements
Resolved multi-service production outage
Resolved simultaneous multi-service outage (Kafka + PostgreSQL + Elasticsearch) in a live production environment, minimizing business disruption.
Led Longhorn storage migration
Led Longhorn storage migration that eliminated persistent node-dependency failures, improving cluster reliability.
Reduced manual deployment and operational effort
Reduced manual deployment and operational effort by ~50% through CI/CD automation and Bash scripting.
Stabilized Kubernetes cluster
Stabilized a historically unstable Kubernetes cluster — cutting recurring incidents through proactive monitoring and systematic remediation.
Delivered zero-downtime upgrades
Delivered zero-downtime Kubernetes upgrades and Linux server maintenance across production environments.
About Details
Professional Bio
Results-driven DevOps Engineer with 5 years of experience designing and maintaining Kubernetes-based production infrastructure, building robust CI/CD pipelines, and automating cloud operations at scale. Proven track record of resolving critical production outages and stabilizing distributed systems.
B.Tech in Civil Engineering in Civil Engineering
College of Engineering, Trivandrum (2017 - 2021)