Linux System Administrator (2015)

At MIT institute Bopitiya, Western Province, Sri Lanka

Configured, tested and maintained Computer institute’s network equipment to achieve student needs.
Gained advanced skills in C Programming, Shell Scripting (bash) and hands on experience on Linux systems.
Good hands-on knowledge of Source Code Management (Version Control System) tools like Git with SCM practices, such as branching and code merge.

Associate Software Engineer (2017-Nov – 2019-April)

Centavo Systems, Nugegoda, Western Province, Sri Lanka

Improved system performance by making proactive adjustments and resolving bugs.
Installed and configured software applications and tested solutions for effectiveness.
Devised web applications for inventory monitoring customer relationship management, staff administration and generation of reports.
Gained Flask web based applications with database back-ends like PostgreSQL, MySQL and MongoDB.
Gained working experience with Nodejs for web applications.
Hands on experience in Coldfusion programming language.

Villvay Systems, Dehiwala, Western Province, Sri Lanka

Researched, designed and implemented scalable applications for company requirements as a python developer.

Villvay Systems, Dehiwala, Western Province, Sri Lanka

Solid experience with CentOS and RedHat based Linux Server Administration.
Implement Jenkins CI/CD roadmap for a large scale Java based project deployment process (Elastic Path) to reduce human error and speedup production process.
Zabbix/Nagios monitoring with Telegram or E-mail notifications in order to quickly react with unintended behaviors of a system.
Gained expert level Ansible/Ansible AWX automation experience to manage and setup RHEL/CentOS Linux infrastructure in a quick manner.
ProxySQL solution for MySQL load balancing. And developed management web UI for ProxySQL configuration easiness.
Hands-on knowledge of software containerization platforms like Docker and Docker compose.
Design Ansible automation solutions for company needs.
Perform log analyzing using ELK stack.

Axiata Dialog, Sri Lanka

Implement reliable CI/CD pipelines using Jenkins combined with Ansible for microservice based projects.
Gained AWS vpc and subnetting concepts in implementing ECS.
AWS s3, WAF and load balancer working experience.
RHEL based server hardening.
Design customized docker images in order to handle challenging situations.
Gained practice of predicting the ways of malfunctions before it happens and apply solutions as a best practice.

IFS Research and Development (PEO) – Performance and observability

Implemented monitoring solutions using EFK (Elasticsearch, Fluentd, Kibana) and the kube-prometheus-stack, enhancing system visibility and reducing issue resolution time by 40%.
Designed log clearance mechanism and Kibana dashboard autoloading while installation (ifs-monitoring-curator). 2023 – 2024
Enhanced application health dashboards for ensuring enhanced observability. With this tuning performance went easier for 30+ micro-services.
Expanded CI/CD pipelines using Bitbucket, integrating Bash and Python, and added sophisticated unit-testing mechanisms for Kubernetes applications.
Maintain documentation related to infrastructure, deployment processes. Designed and architect the main monitoring solution for the IFS Application (ifs-monitoring) 2022 – 2024.
Provide support for the IFS Nexus project by enhancing observability components. This primarily involves configuring the Filebeat across multiple clusters using ArgoCD GitOps automation. 2024

Insighture PTE Ltd.

Implement OPNsense firewalling solution reducing manual VPN configuration management for administrators.
Migrating existing legacy Hashicorp Vault into Kubernetes based Vault with automatic AWS KMS unsealing speeding up application authentication.
Maintain AWS infrastructure in a consistent way so that the applications function without frictions.

Designed and developed web user interface of https://www.vinota.com.com and its client activity monitoring dashboards. (2017-2019)
I have configured entire server infrastructure of https://wurthlac.com/ (one of the subsidiary project of Wurth group) for automation and reliability of the project. (2019-2021).
Involved in DevOps CI/CD creation and infrastructure handling of https://gudppl.com/.
Configured and maintained CI/CD procedures for ongoing projects, Server Hardening at Dialog Axiata.

Implement fcmd command to find command names similar to the given regular expression (https://github.com/rishithaminol/fcmd.git)
Designed a customized package manager for a Linux distribution compiled by Linux From Scratch (http://www.linuxfromscratch.org/) project. (https://github.com/rishithaminol/mpkg.git)
Simple web server with an API design to fetch and analyze (https://coinmarketcap.com/) cryptocurrency data. (https://github.com/rishithaminol/cmarketcap.git).
Setting up fully functional Linux based E-mail servers with customized web UIs and database back-end.
Designed a NodeJS based web application which monitor network activity (ARP packet activity). (https://github.com/rishithaminol/panel-anthrax.git)
Design ready to use Flask application framework familiar to me | (https://github.com/rishithaminol/flask-skeleton)
In the process of developing a tool to capture and log all packets going through a network interface. This tool is specialized in outputting it’s log data in JSON format. Later it can be shipped to Elasticsearch (efk-stack) to be analyzed. Specially this tool is compatible with FreeBSD systems as well. (https://github.com/rishithaminol/frame-logger)