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02 · Impact

Proof, not promises

Six case studies from Western Union payment platforms. Each one states the challenge, the action taken and the measured result.

Western Union, Senior SRE

Cutting Incident Resolution Time

Challenge
Critical production incidents on payment platforms needed faster, more consistent triage.
Action
Standardized the first response triage, ran structured war rooms with clear roles, and drove postmortem follow up actions.
Result
MTTR reduced by 30 to 40% (about 65 to 38 to 42 minutes); recurring incidents down 15% quarter over quarter.

Western Union, Senior SRE

Developer Support at Scale

Challenge
Developers needed fast, reliable help with Kubernetes and platform issues.
Action
Provided first line engineering support, automated triage steps with Python, and wrote 40+ runbooks and knowledge articles.
Result
85%+ of tickets resolved without escalation; resolution time cut from 6 hours to 2.5 hours for 50+ engineers; 8 hours saved weekly; 25% fewer repeat questions.

Western Union, Senior Cloud Engineer

Faster Environment Provisioning

Challenge
Three tier application environments took days to provision and were unreliable on first deploy.
Action
Designed CloudFormation templates (ALB, EC2, ASG, VPC, RDS) and published them via AWS Service Catalog; applied CloudWatch based root cause analysis to failed stacks.
Result
Provisioning cut from 2 to 3 days to 45 to 90 minutes; first time deployment success raised from about 60% to over 90%.

Western Union, Senior Cloud Engineer

Resilient Load Balancing and Scaling

Challenge
Unhealthy instances took too long to recover.
Action
Tuned ALB and NLB health checks and Auto Scaling policies.
Result
Recovery time reduced from about 8 minutes to under 3.

Western Union, DevOps Engineer

Standardized CI/CD Pipelines

Challenge
Deployments relied on manual steps across environments.
Action
Wrote declarative Jenkins pipelines in Groovy, integrated JFrog Artifactory across QA, UAT and Production, and enforced SonarQube quality gates and vulnerability scanning.
Result
About 80% of manual deployment steps automated; non compliant releases blocked; fewer configuration errors.

Western Union, Senior SRE

Smoother Global Handover

Challenge
Offshore to onshore handovers were slow.
Action
Redesigned the handover process and mentored distributed engineers.
Result
Handover time cut from 25 minutes to under 8; recognized with a Star Award.