George D.

• Designed and maintained a centralized Infrastructure-as-Code repository with versioned Terraform modules, enforcing modular standards and DRY practices across teams. • Built GitOps-driven pipelines in GitLab and ArgoCD with dynamic builds, parallelized tests, caching, and automated E2E/load testing, improving deployment speed and reliability. • Implemented ephemeral, feature-specific environments with GitLab, ArgoCD, and Helm, delegating non-critical stack configuration to development teams for faster iteration. • Architected centralized-distributed observability using Grafana Alloy, aggregating logs, metrics, and traces into Loki, Mimir, and Tempo for full-stack visibility. • Defined and enforced SLAs, SLIs, and SLOs with stakeholders; implemented Prometheus recording rules and dashboards to monitor 1/7/30-day windows and ensure compliance. • Designed and rolled out Backstage as the Internal Developer Portal (IDP), now adopted product-wide for onboarding, documentation, and service catalogs. • Standardized monitoring, metrics, and logging across services by developing custom Grafana dashboards and TypeScript modules for health checks, GraphQL metrics, and trace-span injection.

• Architected and deployed an enterprise observability platform (Prometheus, Grafana, Alertmanager, Pushgateway) delivering real-time metrics and resilient alerting across on-prem systems. • Automated PagerDuty on-call configuration with Terraform IaC, enabling engineers to self-serve incident workflows and reduce operational toil. • Designed and launched a scalable cloud-native monitoring solution on GCP (Cortex, GKE, Helm, Vault), enhancing security and reliability for production workloads. • Eliminated toil by automating on-call compensation calculations in Go, integrating PagerDuty + Google Sheets APIs with Cloud Functions and CircleCI. • Defined and enforced SLOs/SLIs for critical funding services, improving reliability and aligning performance with customer expectations. • Standardized monitoring deployments across environments with a configuration management toolkit (Ansible, Makefiles, Node.js, GoCD, Jinja), accelerating rollout speed.

• Automated infrastructure provisioning with Python-based IaC (CloudFormation, Kubernetes, Ansible), laying the foundation for scalable, reliable environments. • Built and maintained GitLab CI/CD pipelines and Kubernetes manifests to ensure consistent, automated deployments across services. • Implemented observability for Java and Node.js applications with Prometheus, Grafana, and Kibana, improving system reliability and troubleshooting speed. • Modernized backend systems by contributing to a Spring Boot microservices architecture (Elasticsearch, Kafka, AWS), boosting scalability and maintainability. • Designed and launched an API Gateway with GraphQL, gRPC, and Docker to unify and secure service access, strengthening platform reliability. • Led a sprint efficiency initiative across departments, fostering self-organized teams and reducing operational blockers.