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Personal portfolio

I build reliable cloud platforms for teams that need calm production systems.

Hi, I'm Rumesh. I help product teams make AWS, automation, delivery pipelines, and observability feel clear enough to operate under pressure.

20+ years across fintech, education, and SaaS. I care about stability, clarity, and shaping systems that are easy to run.

20

Experience

20+ years

AWS

Focus

AWS + DevOps

FS

Sectors

Fintech + SaaS

SE

Based in

Stockholm

Live systems

Cloud reliability, framed clearly.

What I build

Glass-clear platforms.

01

Infrastructure foundations

Multi-account AWS, security guardrails, and IaC that scales without drama.

02

Delivery pipelines

CI/CD, GitOps, and automation that keep releases steady and predictable.

03

Observability + cost

Signals that matter, dashboards that reduce noise, spend that stays in range.

Always up for thoughtful engineering chats.

Selected work

Portfolio highlights.

A few examples where platform engineering translated into faster delivery, clearer operations, and systems teams could trust in production.

Work with me
🧊 AWS Platform
Case study

Featured transformation

Multi-account AWS Landing Zone

Built a governed multi-account baseline with Control Tower and SSO, cutting provisioning time by 40% and standardizing guardrails for 20+ teams.

AWS Control Tower Organizations SSO Terraform
View case study

Outcome

40% faster account provisioning

Impact

20+ teams onboarded

💎 CI/CD
Case study

GitLab CI for regulated fintech

Designed multi-tenant CI/CD with dynamic environments and shift-left security, improving lead time to production by 45% while meeting audit controls.

GitLab CI Docker ECS/EKS OPA
View case study

Outcome

45% faster lead time

Impact

Audit-ready delivery

🔮 Observability
Case study

Event streaming observability

Launched a Kafka-to-OpenSearch pipeline with Prometheus/Grafana, reducing alert noise by 60% and bringing MTTR under 15 minutes.

Kafka Prometheus Grafana OpenSearch
View case study

Outcome

60% less alert noise

Impact

MTTR under 15 min

✨ Serverless
Case study

Serverless cost & reliability uplift

Re-architected a Lambda + API Gateway stack with async patterns and canary deploys, cutting costs by 32% and eliminating cold start incidents.

Lambda API Gateway DynamoDB Step Functions
View case study

Outcome

32% lower runtime cost

Impact

Zero cold-start incidents

Toolbox

Skills I use every week.

A personal mix of cloud, automation, and reliability tools that keep projects clean, observable, and easy to run.

Cloud Platforms

  • AWS (EC2, ECS, EKS, Lambda)
  • S3, CloudFront, Route53
  • RDS, DynamoDB, SQS
  • IAM, Organizations, SSO
  • VPC, Transit Gateway

Infrastructure as Code

  • AWS CloudFormation
  • AWS CDK
  • Terraform
  • Ansible

CI/CD & Automation

  • GitLab CI/CD
  • Jenkins
  • ArgoCD

Container & Orchestration

  • Kubernetes (EKS)
  • Docker
  • Amazon ECS & Fargate
  • Helm Charts

Monitoring & Logging

  • CloudWatch & CloudWatch Logs
  • Grafana, Prometheus & Loki
  • ELK Stack
  • New Relic

Security & Compliance

  • AWS Security Hub
  • AWS Config & CloudTrail
  • Secrets Manager & KMS

Availability

Useful ways to work together.

I am most useful when a team needs practical help turning cloud complexity into systems they can ship and operate with confidence.

Platform review

Architecture and reliability checks

A focused review of AWS foundations, deployment flow, observability, cost signals, and operational risk.

Delivery systems

CI/CD and GitOps buildouts

Secure pipelines, reusable templates, promotion workflows, and release guardrails for product teams.

Cloud foundations

AWS landing zones and automation

Account structure, identity, network baselines, IaC modules, and controls teams can safely self-serve.

Get in touch

Need a cloud platform review, CI/CD cleanup, or AWS reliability check?

I work with teams that need practical help turning cloud complexity into stable foundations, safer releases, and observability people actually use.

Best fit

Useful when a team needs momentum without adding noise.

Review

Architecture and reliability checkups, cost audits, and platform clarity sessions.

Build

Landing zones, GitOps pipelines, and monitoring stacks that ship safely.

Enable

Playbooks, runbooks, and training so teams can operate confidently after handover.

Based in

Stockholm, Sweden

Working remotely with teams across Europe and North America.