Nnabueze Opara

Experience

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  MITOBI INTEGRATED SERVICES

  Feb 2011 - Mar 2015

  Software Developer

  • Developed QRcode mobile wallet using ReactJs and Python.• Design and implement Human resource management application using C# and React-JS with team.• Gave company idea of scan and pay system that increase company revenue by 40%• Developed reporting mobile app that has AI algorithm with react native and flutter (Android and IOS platform)• Design and implement Internal Generated Revenue (IGR) for state government and financial institutions.

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  SimplePay

  Apr 2015 - Jan 2017

  Junior DevOps Engineer

  • Assisted in automating deployment processes and managing version control using Git and SVN.• Supported cloud infrastructure management on AWS, including setting up EC2 instances, security groups, and VPC.• Configured and maintained continuous integration servers, improving team productivity and accelerating project timelines.• Implemented basic monitoring setups with Nagios to track infrastructure health and performance.• Collaborated with developers to troubleshoot and optimize application and system performance. Show less

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  Ercas Solution Limited

  Feb 2017 - Jan 2023

  DevOps Engineer

  • Collaborate with development teams to adopt GitOps practices, improving collaboration and operational efficiency.• Lead the design, implementation, and automation of CI/CD pipelines to accelerate application deployment cycles, reducing release times by 40%.• Configure and manage monitoring solutions using Prometheus and Grafana to provide insights into application health and proactively identify bottlenecks.• Enhance security compliance by implementing IAM policies and managing secrets using Vault and encryption mechanisms.• Developed and maintained Jenkins-based CI/CD pipelines, increasing deployment frequency and ensuring smooth integration between development and operations teams.• Administered and optimized infrastructure on AWS, including EC2, S3, RDS, Lambda, and CloudWatch, achieving cost savings and operational efficiency.• Collaborated with developers to containerize legacy applications using Docker, reducing infrastructure dependencies and simplifying deployment.• Automated deployment processes using Ansible and Terraform for configuration management and provisioning of infrastructure.• Managed monitoring solutions and logging infrastructure using ELK Stack and Nagios, improving application observability and incident response times.• Worked closely with the security team to integrate automated security scans within CI/CD pipelines, ensuring code quality and security. Show less

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  Transition Technologies PSC S.A

  Jul 2022 - now

  DevOps Engineer

  • Architect and manage AWS infrastructure, ensuring 99.99% uptime and performance optimization through auto-scaling, load balancing, and disaster recovery planning.• Implemented Kubernetes clusters with Helm charts for container orchestration, enhancing deployment reliability and scaling.• Automate infrastructure provisioning using Terraform, achieving repeatable, consistent deployments across multiple environments.• Provide 24/7 support for production environments, diagnosing and resolving issues quickly to minimize downtime.• Developed automation systems for InfluxDB data migration.• Created Python scripts for cleaning unused public IP addresses and persistent volumes in Aws Cloud.• Managed and upgrade Kubernetes clusters.• Designed CI/CD pipelines using Jenkins and Terraform for Azure resource management.• Automated the migration of Azure PostgreSQL single server database to Azure PostgreSQL Flex server in Azure cloud.• Design a Python script for automatic monitoring of Redis in Azure cloud.• Implemented a python module for deleting Kubernetes namespace within a specific cluster.• Wrote a Python module for automation deployment of FluentD within the Kubernetes clusters for log collection. Show less