Mohammed Abdul Nadeem

Owned reliability for Azure services behind Dayforce HCM and Dayforce Wallet, where missed pay runs directly impact employees. Operated four AKS clusters supporting .NET Core services for time clocks, scheduling, benefits, and the employee mobile app (~900 pods at peak). Built reusable Terraform modules (AKS node pools, Azure SQL, Key Vault, Application Gateway) to standardize new customer region deployments. Migrated release definitions into YAML pipelines, implemented Argo CD with Helm charts for environment build verification, and enabled blue-green releases via Azure Front Door and Application Gateway. Defined SLOs with payroll operations (pay run batch completion and Wallet balance latency) and improved alerting by replacing CPU threshold alerts with burn-rate alerts, reducing repeat pages. Added OpenTelemetry tracing to determine root causes for slow pay runs and performed scaling ahead of seasonal volume spikes. Served on-call via PagerDuty rotation and acted as incident command

Operated the AWS platform for a virtual clinic, supporting booking/video visits and healthcare member and provider workflows. Managed three EKS clusters in us-east-1 for booking, messaging, care advocacy, and claims services (~400 pods) with autoscaling for appointment peaks. Containerized and moved 40 services from EC2 to EKS using Helm, reducing environment setup time significantly. Delivered Terraform and Terragrunt for VPCs, EKS, RDS PostgreSQL Multi-AZ, S3, and IAM roles to prevent staging drift. Replaced 35 Jenkins freestyle jobs with GitHub Actions workflows using OIDC, removing long-lived access keys and improving SOC 2 posture. Implemented Istio canary releases for safer rollouts and reduced rollback/support needs. Built Datadog dashboards and SLOs for booking success and video session start time. Added OpenTelemetry for end-to-end member tracing. Addressed HIPAA requirements (PHI tagging, KMS encryption, VPC endpoints, and long log retention). Built FHIR/HL7 file pipelines us

Handled builds, releases, and server configuration for advisor workstation tooling and the Merrill Edge self-directed trading site across two data centers and early AWS adoption. Ran Jenkins with Groovy shared libraries for 120 Java and .NET builds from Bitbucket and later migrated 30 builds to GitLab CI after TFS retirement. Managed Puppet across 250 RHEL servers to enforce hardening baselines, JDK versions, and Nginx config to prevent host drift from breaking releases. Built the group’s initial AWS footprint with EC2 Auto Scaling, S3, Route 53, and an RDS Oracle read replica to reduce load on the primary database. Deployed ELK for centralized logging across 250 hosts and integrated New Relic to aid support investigations. Automated Saturday release scripts to reduce manual release duration from ~6 hours to ~90 minutes. Produced SEC 17a-4 and PCI DSS evidence using S3 Object Lock, quarterly access reviews, and TLS 1.2 for public trading endpoints. Participated in market-hours readin