Stephen Njoroge

Experience

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  WIOCC

  Feb 2014 - Sept 2015

  Enterprise Support Engineer

  Provide advanced front-line technical engineering support and high quality solutions to customer issues and new integrations.Developed and maintained automation and orchestration engine in support of large scale private and public cloud deployments.Architected enterprise-wide provisioning, management and monitoring systems.Created the automated build and deployment process for application, re-engineering setup for better user experience, and leading up to building a continuous integration system.Developed and implemented Software Release Management strategies for various applications according to the agile process.Responsible for Continuous Integration (CI) and Continuous Delivery (CD) process implementation-using Jenkins along with Python and Shell scripts to automate routine jobs.Developed build and deployment scripts using ANT and MAVEN as build tools in Jenkins to move from one environment to other environments.Built and Deployed Java/J2EE to a web application server in an Agile continuous integration environment and also automated the whole process. Show less

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  Access Kenya Group

  Aug 2015 - Jul 2017

  System Support Engineer

  • Developed locally using Vagrant and Docker with GitHub integration, removed the SVN requirement.• Moved to the latest version of Ubuntu running AWS Changed Code migration using Jenkins and Puppet Added logging with Logstash and Nagios Python Scripting for data migration from legacy SQL app VMWare/Open stack API project Python app which accessed the OpenStack API to analyze the performance of over 10000 servers hosted across multiple platforms: AWS, VMware, vCloud.• Created single-point view access to general and detailed server performances Allowed users to define areas of focus and analysis Ability to self-define dashboards and reports using a simple CMS system from the data gathered. Worked on changes to Openstack and AWS to accommodate large-scale data center deployment.• Enhanced installation process for new data centers Developed Python Scripts to manage the application library Part designer of full virtualization of infrastructure Liaison between DevOps and Infrastructure teams Chef to Puppet Conversion Conversion of 300+ Chef Recipes and Cookbooks to Puppet Manifests and Puppet modules.• Automated the Conversion process Used Puppet Rspec for testing Provided documentation for DevOps and Network Engineering Teams SaltStack Implementation and Testing Project Entailed setting up Saltstack to run with AWS and Google Cloud Show less

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  CSquared

  Mar 2017 - Feb 2019

  System Support Engineer

  Manage the Google fiber network in Uganda, Ghana & Liberia. Both fiber, wireless network, and cloud servers for our clients.• VPLS network support at access as well as core level 2 support. Troubleshoot networking, routing, and interconnectivity issues in Uganda, Ghana & Liberia Network.• L2 & L3vpn service implementation (configuration, VPLS, and VPRN) with Alcatel lucent Network architectural design and implementation (fiber core & access networks)• Provide critical on-shift network operations support to Csquared customers to diagnose and respond to large-scale networking events.• Deliver simple, sustainable, and repeatable solutions and processes. Surveillance of alarms, events & faults that occurred in the radio access network;• Escalation to the next support line, for cases that need advanced troubleshooting. Show less

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  Nokia

  Feb 2019 - now

  ZTE CS Core SME Nokia

  Manage the Nokia systems for Airtel Kenya, with over 12 operational countries. Handle the enterprise support mapping and troubleshooting for over 500 customers globally. Support the NOCwith incidences and do knowledge transfer in the form of training and workshops.· Managed Cloud accounts, including the setup and configuration of EC2 instances, RDS databases, VPCs, Elastic Load Balancers (ELBs), Cloudfront distributions, Route53 hosted zones & health checks.· Develop automation tools that streamlined infrastructure deployment processes using Bash scripting language.· Reduced the average response time by 80% through the automation of manual processes using 65 Ansible modules.· Improved RW's security posture by implementing multi-factor authentication on 21administrator accounts· Provided technical expertise to 10 clients by designing solutions that leveraged over 6 cloud offerings including Amazon WebServices (AWS).· Provides support to Nokia Customers as Customer Support Engineer for Nokia SDM and any other support.· Act as the first point of contact regarding client incidents and outages. Drive customer communication during critical events.· Ability to multi-task, manage a live bridge with customers, and troubleshoot on a live network.· Troubleshooting of Core Nodes for Configuration related issues, basic card-level issues & software versions related issues.· Document problems and abnormalities detected during execution of the ATP and escalate for prompt resolution together with managing the operations KPI.· Daily / weekly routine maintenance checks and operation.· Work closely with other teams for a better understanding of cloud setup and knowledge transfer. Show less