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I am a Senior Full Stack Engineer and Software Architect with 10 years of experience designing secure, scalable, cloud-native .NET systems across healthcare, financial, insurance, and enterprise consulting environments. I specialize in distributed microservices, high-performance REST/FHIR APIs, multi-model data architecture, SQL optimization, AWS/Azure cloud engineering, and event-driven workflows. I have a proven track record modernizing legacy systems, implementing Terraform-driven IaC, delivering AI-driven analytics, and shipping compliant software in regulated industries (HIPAA, PCI-DSS, SOC2). I am backend-focused with strong full-stack capability (Angular/React) and have demonstrated leadership mentoring developers and driving architecture decisions. In collaboration with clinical ops, compliance, QA, and product teams, I mentor junior and mid-level engineers on .NET, Angular, SQL performance, and cloud architecture to deliver robust, scalable solutions.…I am a Senior Full Stack Engineer and Software Architect with 10 years of experience designing secure, scalable, cloud-native .NET systems across healthcare, financial, insurance, and enterprise consulting environments. I specialize in distributed microservices, high-performance REST/FHIR APIs, multi-model data architecture, SQL optimization, AWS/Azure cloud engineering, and event-driven workflows. I have a proven track record modernizing legacy systems, implementing Terraform-driven IaC, delivering AI-driven analytics, and shipping compliant software in regulated industries (HIPAA, PCI-DSS, SOC2). I am backend-focused with strong full-stack capability (Angular/React) and have demonstrated leadership mentoring developers and driving architecture decisions. In collaboration with clinical ops, compliance, QA, and product teams, I mentor junior and mid-level engineers on .NET, Angular, SQL performance, and cloud architecture to deliver robust, scalable solutions.

Brandon Grey

Full Stack Developer, Architect, Front-End Developer, +2

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I am a Senior Full Stack Engineer and Software Architect with 10 years of experience designing secure, scalable, cloud-native .NET systems across healthcare, financial, insurance, and enterprise consulting environments. I specialize in distributed microservices, high-performance REST/FHIR APIs, multi-model data architecture, SQL optimization, AWS/Azure cloud engineering, and event-driven workflows. I have a proven track record modernizing legacy systems, implementing Terraform-driven IaC, delivering AI-driven analytics, and shipping compliant software in regulated industries (HIPAA, PCI-DSS, SOC2). I am backend-focused with strong full-stack capability (Angular/React) and have demonstrated leadership mentoring developers and driving architecture decisions. In collaboration with clinical ops, compliance, QA, and product teams, I mentor junior and mid-level engineers on .NET, Angular, SQL performance, and cloud architecture to deliver robust, scalable solutions.…I am a Senior Full Stack Engineer and Software Architect with 10 years of experience designing secure, scalable, cloud-native .NET systems across healthcare, financial, insurance, and enterprise consulting environments. I specialize in distributed microservices, high-performance REST/FHIR APIs, multi-model data architecture, SQL optimization, AWS/Azure cloud engineering, and event-driven workflows. I have a proven track record modernizing legacy systems, implementing Terraform-driven IaC, delivering AI-driven analytics, and shipping compliant software in regulated industries (HIPAA, PCI-DSS, SOC2). I am backend-focused with strong full-stack capability (Angular/React) and have demonstrated leadership mentoring developers and driving architecture decisions. In collaboration with clinical ops, compliance, QA, and product teams, I mentor junior and mid-level engineers on .NET, Angular, SQL performance, and cloud architecture to deliver robust, scalable solutions.

Available to hire

I am a Senior Full Stack Engineer and Software Architect with 10 years of experience designing secure, scalable, cloud-native .NET systems across healthcare, financial, insurance, and enterprise consulting environments. I specialize in distributed microservices, high-performance REST/FHIR APIs, multi-model data architecture, SQL optimization, AWS/Azure cloud engineering, and event-driven workflows. I have a proven track record modernizing legacy systems, implementing Terraform-driven IaC, delivering AI-driven analytics, and shipping compliant software in regulated industries (HIPAA, PCI-DSS, SOC2). I am backend-focused with strong full-stack capability (Angular/React) and have demonstrated leadership mentoring developers and driving architecture decisions.
In collaboration with clinical ops, compliance, QA, and product teams, I mentor junior and mid-level engineers on .NET, Angular, SQL performance, and cloud architecture to deliver robust, scalable solutions.

Skills

Experience Level

Expert

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Language

English

Fluent

Work Experience

Senior Full Stack Engineer | Software Architect at Cardinal Health

May 1, 2021 - Present

Modernized legacy Patient Access & Scheduling Platform by migrating Web Forms apps to .NET 7 microservices, improving uptime for multi-clinic operations using Clean Architecture, Domain-Driven Design, and CQRS patterns. Engineered horizontally scalable backend services with ASP.NET Core 7, EF Core, Redis caching, and App Service autoscaling to support 50k+ appointment workflows per month. Delivered HIPAA-compliant REST APIs enabling real-time interoperability with EHR ecosystems and third-party providers. Built Azure Functions and event-driven pipelines ingesting 40k+ clinical events per day, enabling real-time triage and provider updates. Architected multi-model data systems across SQL Server, Azure SQL, and Cosmos DB with partitioning, indexing, and tuning for consistency. Rewrote high-impact stored procedures and optimized execution plans, reducing clinician dashboard load times by 65%. Migrated fragmented React screens to Angular 15 with NgRx to unify clinician workflows. Implement

Senior Full Stack Engineer | Cloud Engineer at Q2 Holdings

September 1, 2018 - April 1, 2021

Modernized core payment services by migrating monolithic VB.NET project to React and ASP.NET Core microservices hosted on AWS Lambda, EC2, and Kafka, improving authorization & refund reliability for merchants. Built PCI-compliant REST APIs for transaction authorization, settlement, refunds, and account updates using API Gateway and OAuth 2. Implemented multi-model data solutions with DynamoDB and Amazon RDS, with partitioning and eventual consistency. Built Kinesis-based ingestion pipelines for real-time transaction analysis, fraud detection, and downstream batch processing. Developed high-performance backend logic with Entity Framework Core and Dapper, and built real-time merchant dashboards for monitoring, payout status, and risk scoring. Secured APIs with Cognito/IAM roles and granular permissions, and reduced Redis load by implementing caching strategies to accelerate high-traffic endpoints.

Senior Application Engineer at GuideOne Insurance

February 1, 2017 - September 1, 2018

Modernized legacy Policy Administration System (PAS) by transforming SOA services into REST APIs with standardized DTO contracts, consistent error models, and API versioning. Rebuilt PAS modules (quotes, renewals, endorsements) with modular architecture, reusable middleware, and centralized request validation. Developed asynchronous billing and rating engines with durable messaging and idempotent workflow updates. Refactored SQL Server schemas, stored procedures, indexing strategies, and execution plans powering underwriting, billing, and claims operations. Built rich UI components using Kendo UI to streamline high-volume underwriting and policy servicing workflows. Implemented secure identity and API access patterns using OAuth 2, OpenID Connect, and JWT hardening.

Backend Engineer at CredEra

August 1, 2015 - January 1, 2017

Designed and built green-field REST APIs using Web API with repository/unit-of-work patterns and layered architecture. Built DAL layers using ADO.NET and stored procedures optimized for OLTP workloads. Developed Knockout.js MVVM dashboards and admin consoles for multi-warehouse retail operations. Integrated FedEx/UPS APIs for real-time shipping, SLA monitoring, and exception routing. Delivered AWS-backed serverless workflows using Lambda, SQS, S3, and RDS for scalable data processing. Improved SQL Server performance through stored procedure tuning, indexing strategies, and SSIS enhancements. Built rich, interactive UI components using Kendo UI to streamline underwriting and claims operations.

Senior Full Stack Engineer at Cardinal Health

May 1, 2021 - Present

Led modernization of legacy Patient Access & Scheduling Platform; migrated Web Forms apps to .NET microservices; improved uptime for multi-clinic operations using Clean Architecture, DDD, and CQRS patterns; designed and integrated secure REST APIs for enterprise healthcare workflows; migrated scheduling microservices to AKS with Terraform IaC; established observability via dashboards and tracing; implemented AI-assisted analytics for clinical workflows.