Welcome to my portfolio!
I'm Duminda Sumanasinghe,
a seasoned DevOps engineer with a passion for delivering cutting-edge solutions.

My journey took flight from a profound passion for electronics, propelling me to embark on an Electronics diploma program. Here, I meticulously honed my skills in low-level assembly programming for Intel 8030 series microprocessors, serving as the solid bedrock for my extensive, 14-year tenure as an electronic and telecommunication technician. This rich foundation led me to seek higher education, culminating in the attainment of a first-class honors degree in Computing from the esteemed University of Greenwich.

Following this milestone, I transitioned into the dynamic Information Technology sector, commencing my journey as an associate software developer. As my career path unfolded, I eagerly embraced the role of a cloud system administrator, where I thrived for a rewarding period spanning approximately four years.

Motivated by an unwavering fascination with cloud technology and a fervent passion for task automation, I conscientiously chose to venture into the challenging yet captivating domain of DevOps. Over the course of more than four years, I diligently cultivated substantial experience as a DevOps engineer. My commitment to this dynamic and automation-driven field remains resolute, offering a continuous source of both fascination and challenge.

Beyond my professional pursuits, I'm also an enthusiastic IoT enthusiast, channeling my creative energies into home automation DIY projects during my leisure time. Additionally, I find joy in exploring new places through travel, participating in charitable activities, and grounding myself through meditation.

At present, my career trajectory is marked by a targeted focus. I am committed to furthering my expertise within a specific niche, concentrating on becoming a DevOps engineer specialized in the multi-cloud environments of AWS and Azure. This is an area where I have already gained experience and continue to enhance my proficiency.

My expertise spans a range of key competencies:

1. Robust CI/CD Pipelines:

With a deep understanding of Jenkins, GitHub Actions, and Azure DevOps, I specialize in constructing reliable and efficient CI/CD pipelines, ensuring seamless software deployment.

2. Infrastructure as Code (IaC):

Proficient in Ansible and Terraform, I leverage these tools for configuration management, streamlining infrastructure provisioning and maintenance.

3. DevSecOps Security Practices:

I possess a thorough knowledge of enforcing best DevSecOps security practices and utilizing cutting-edge tools to mitigate vulnerability issues within CI/CD pipelines, ensuring the highest level of security.

4. Containerization and Orchestration:

With sufficient knowledge of Docker and Kubernetes, I adeptly apply these technologies for efficient containerization and container orchestration, enhancing scalability and manageability.

5. Gitops Workflow:

Leveraging tools such as ArgoCD and Flux in a GitOps workflow facilitates the achievement of a Continuous Deployment methodology within the DevOps domain, ensuring a single source of truth for configuration management and promoting efficient collaboration in software development.

6. System Monitoring and Observation:

Utilizing Prometheus and Grafana, I excel in precise system monitoring and observation, allowing for proactive issue identification and resolution.

7. Automation and Scripting:

Proficiency in Shell and Python scripting empowers me to automate tasks effectively, streamlining operations within complex systems and increasing overall efficiency.

This journey represents my commitment to continuous growth and specialization in the ever-evolving landscape of technology and automation.