PayMedia · Sri Lanka · Open to opportunities

Secure, scalable cloud infrastructure, engineered end to end.

Cloud Infrastructure Engineer across AWS, GCP, Huawei Cloud and Orel Cloud. I design, automate and run compliant platforms for payment systems, and manage Microsoft 365 environments.

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rashmi@cloud ~
99.9%uptime on payment systems
4cloud platforms
4certifications
6production projects

Expertise

Cloud architecture

Multi-tier, highly available designs with public, private and database subnets, Auto Scaling and RDS (Aurora, MySQL, Postgres, Oracle).

  1. Route 53
  2. CloudFront
  3. API Gateway
  4. ALB / NLB
  5. EKS
  6. RDS · S3

Security and compliance

PCI DSS and ISO 27001 aligned builds with IAM, KMS, WAF, GuardDuty, Secrets Manager, Wazuh and CIS benchmark hardening.

DevOps

CodePipeline, CodeBuild, CodeDeploy, Lambda, Docker, EKS, Git, Terraform basics.

Networking

Site-to-site VPNs to partner banks, VPC peering, NAT, pfSense, Libreswan.

Linux and operations

Amazon Linux, RedHat and Ubuntu, DNS, EFS, Patch Manager, backups, and fast troubleshooting of cloud and network issues.

Monitoring and Microsoft 365

CloudWatch, CloudTrail, Zabbix, cost optimisation, plus Entra ID, Intune, Autopilot and SharePoint Online administration.

Cloud projects

Technical skills

Experience

  1. Mar 2026 to now

    Cloud Infrastructure Engineer, PayMedia Private Limited

    • Run mission-critical AWS infrastructure (EC2, S3, RDS, VPC, EKS) for payment systems with high availability.
    • Configure Linux servers and automate deployments with Git, CodeDeploy and CodePipeline.
    • Configure and monitor site-to-site VPNs to Amana, Cargills, DFCC, NTB, NSB, HNB Assurance, Mobitel, CEB and Nippon.
    • Keep cost and security in check against PCI DSS and ISO 27001; monitor with CloudWatch.
    • Deploy lightweight Docker containers for test and development environments.
    • Administer Microsoft 365: Entra ID users, licensing, groups and MFA, Intune and Autopilot onboarding, SharePoint Online.
    • Work with senior engineers, banks and vendors on secure integrations.
  2. Mar 2024 to Mar 2026

    Associate System Support Engineer, PayMedia

  3. Sep 2023 to Mar 2024

    Technical Support Intern, PayMedia

Certifications

  • AWS Certified Solutions Architect, Associate2026 to 2029
  • AWS Certified Cloud Practitioner2025 to 2028
  • Oracle Cloud Infrastructure 2025 Foundations Associate2025
  • Huawei Cloud Tech Essentials (HCCDA)2025 to 2028

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Education and courses

  • Bachelor of ICT (Honours), 2nd UpperRajarata University of Sri Lanka, 2019 to 2024
  • AWS Cloud Practitioner Foundational CourseUniversity of Moratuwa, 2024
  • CCNA: Enterprise Networking, Security & AutomationUniversity of Moratuwa, 2021

Let's build something reliable

Hiring, or need a secure cloud setup for a payment or banking product?

rash.haluwana@gmail.comLinkedInCredly+94 71 718 0703