Biraj Williamson

Led end-to-end modernization of county digital health services, migrating legacy monoliths to Azure Kubernetes microservices, reducing release lead time by ~40% and enabling autonomous deployments with robust rollback mechanisms. Designed HIPAA-compliant EHR subsystems with encryption, detailed audit trails, access governance, and secure data flows, resulting in zero compliance findings over 2 consecutive audits. Built appointment scheduling and reminders using Azure Functions, Service Bus, Outbox, and DLQs, achieving ~99.2% booking reliability and reducing reminder failures by ~55%. Modernized patient-facing Angular dashboards into modular feature units with real-time notifications, cutting load times by ~38% and increasing report downloads by ~22%. Implemented Datadog + OpenTelemetry distributed tracing and SLO-driven alerting, lowering MTTD/MTTR by ~40% and enabling fully monitored service meshes. Unified authentication using OAuth2, Azure AD, and IdentityServer, reducing auth-relat

Designed cloud-native .NET microservices using CQRS, event sourcing, and event-driven architecture, improving horizontal scaling and reducing cross-service contention. Delivered modernization of SaaS applications using Next.js SSR, improving First Contentful Paint by ~28% and increasing user engagement by ~20%. Developed multi-account AWS deployment workflows using Step Functions + CodePipeline, reducing deployment failures by ~35% with automated canary/rollback logic. Built large-scale ingestion pipelines with Azure Service Bus (idempotent consumers, retries, outbox pattern), scaling throughput capacity from ~13% to ~97% under stress tests. Optimized SQL Server queries, views, and stored procedures, reducing query execution times by ~12% and CPU utilization by ~18%. Implemented distributed resiliency patterns (circuit breaking, bulkheading, timeouts) improving system uptime and behavior under dependency failures. Created internal engineering tools for code scaffolding, schema drift ch

Modernized secure defense applications by migrating WebForms to ASP.NET MVC, boosting unit test coverage from 20% → 85% and enabling parallelized CI pipelines. Designed PCI DSS-compliant transaction workflows using Saga pattern and event sourcing, improving auditability and ensuring safe compensation and rollback. Revamped API security using OAuth2, JWT, RBAC, and hardened identity flows, reducing unauthorized access attempts by ~70%. Integrated Elasticsearch for search and analytics, reducing complex query times by ~50% and enabling rich faceted reporting used in mission workflows. Implemented structured JSON logging with correlation IDs, improving traceability in distributed scenarios and reducing debugging time. Built internal performance dashboards and profiling tools enabling teams to quickly isolate latency issues in critical systems. Enhanced service reliability by introducing rate-limiting, throttling, secret rotation, and threat-modeling practices.