Sasith Wickramasinghe

During this role, I led and supported the design, development, integration, and operational support of enterprise-grade applications and mission-critical telecom platforms, contributing to digital transformation initiatives across cloud, infrastructure, and service delivery domains. Worked across the full technology lifecycle, combining software engineering, platform operations, systems integration, automation, and technical support to enhance service reliability, operational efficiency, and business continuity.

May 2020 – February 2025

1. Designed and supported enterprise-grade telecom applications and integrations.
2. Contributed to AWS infrastructure development using Terraform.
3. Developed backend services and APIs using Python, Java, and Spring Boot.
4. Managed deployments to K8s/EKS clusters using Jenkins and GitHub workflows.
5. Managed containerized environments using Kubernetes, Docker, AWS, and Azure.
6. Automated deployments and infrastructure provisioning using Terraform and Ansible.
7. Implemented CI/CD pipelines using Jenkins and GitHub Actions.
8. Implemented SELinux policies on Red Hat servers to enhance system security.
9. Provided L2/L3 support for mission-critical systems and enterprise platforms.
10. Implemented monitoring solutions using Prometheus and Grafana.
11. Participated in disaster recovery and business continuity initiatives.

Key Technologies

Python, Java, Spring Boot, Kubernetes, Docker, AWS, Azure, Terraform, Ansible, Jenkins, Oracle, PostgreSQL

During this role, I led and supported the configuration, integration, development, and operation of enterprise OSS/BSS platforms and business-critical telecom applications. Worked across software development, system integration, database administration, platform operations, and technical support to ensure reliable service delivery, operational efficiency, and business continuity.

May 2016 – April 2020

1. Supported OSS/BSS platforms including NetCracker, Clarity OSS, Siebel CRM, and Oracle ERP.
2. Developed provisioning applications, reports, and automation solutions.
3. Managed enterprise integrations and backend application development.
4. Performed production support, troubleshooting, upgrades, and platform migrations.
5. Administered Linux patching cycles, user and group sudo configurations, and access control.
6. Troubleshot complex Linux system-based IT application issues across production environments.
7. Participated in on-call rotations, ensuring 24/7 support availability.
8. Worked closely with infrastructure, database, and application teams to improve reliability and performance.
9. Configured and maintained systems running Red Hat, CentOS, Ubuntu, and Oracle Linux.
10. Implemented ITIL-based incident and change management processes.

Key Technologies

Python, Java, Spring Boot, TypeScript, OSS/BSS, CRM, ERP, SOA/MDM, Microservices, Oracle, PostgreSQL

During this role, I led and supported telecom network platforms, enterprise applications, service provisioning systems, and integration solutions across the access, aggregation, and core networks. Worked across network operations, system integration, application support, automation, and technical troubleshooting to ensure reliable service delivery and operational efficiency.

May 2014 – Apr 2016

1. Supported telecom service provisioning, network activation, and enterprise integration platforms.
2. Developed automation tools and integration components to improve operational efficiency.
3. Managed service activation, network provisioning, and cross-platform integration workflows.
4. Performed deployment, maintenance, monitoring, and production support across Linux and Windows environments.
5. Troubleshot incidents and resolved issues affecting business-critical systems and services.
6. Assisted with backup validation, recovery procedures, and operational readiness activities.
7. Supported enterprise network infrastructure, including switches, routers, firewalls, and connectivity services, ensuring service availability and continuity.

Key Technologies:

Telecom OSS/BSS, Service Provisioning, Service Activation, Enterprise Integration, Linux, Windows Server, TCP/IP, Routing & Switching, LAN/WAN, Firewalls, VPN, DNS, DHCP, VLANs, Cisco, Network Security, Network Monitoring & Troubleshooting, Data Centers, Connectivity Services.

During this role, I focused on supporting broadcast engineering, video server management, IT infrastructure, live production systems, and real-time technical troubleshooting.

January 2012 – April 2014

1. Supported broadcast infrastructure, video servers, and transmission systems.
2. Managed IT and networking environments supporting live production operations.
3. Performed real-time troubleshooting and operational support.
4. Supported IT and broadcast infrastructure for live operations.
5. Maintained video servers, network devices, and broadcast equipment.

Key Technologies:

Broadcast Infrastructure, Video Servers, Transmission Systems, Live Production Support, Broadcast Operations, IT Infrastructure, Cisco Networking, Windows Server, Linux, System Administration, Incident Management, Troubleshooting.