Resume & Experience

Principal Software Engineer with 13+ years of experience developing and architecting enterprise-scale distributed systems and cloud-native healthcare solutions. Expert in microservices architecture, Clean Architecture, Domain-Driven Design (DDD), and event-driven patterns, with a proven record of delivering scalable, maintainable, and secure systems. Currently leading the design and development of the OobNow healthcare platform, serving multiple organizations and capable of processing millions of transactions monthly with 99.9% uptime. Adept at implementing Clean Architecture, CQRS, and advanced DevOps practices across complex multi-tenant environments.

Professional Experience

Principal Software Engineer

OOB Now

2023-06 - Present

Remote

Architected enterprise healthcare platform using Clean Architecture, DDD, CQRS, and event-driven patterns across multiple microservices.

Key Achievements

•Established enterprise pattern library with multiple shared NuGet packages implementing Result pattern, comprehensive inheritance hierarchies, and Template Method specifications, eliminating exceptions across hundreds of handlers and reducing code duplication and increasing standardization and code reusability
•Engineered IAM catalog microservice integrating Azure AD B2C with OIDC/OAuth 2.0, supporting the onboarding and maintenance of healthcare organizations through hierarchical RBAC (scopes), JWT-based authentication with custom claims enrichment, and Security Service providing multi-tenant isolation across all microservices
•Built event-driven architecture with domain and integration events, Outbox pattern for guaranteed delivery, Azure Service Bus integration, and Quartz.NET automation processing events with no message loss
•Delivered Provider Data Management (PDM) with NPPES integration, batch data import processing and validation, provider contracting, medical coding support (ICD-10, HCPCS, CPT), and using AI for data validation and enrichment
•Implemented zero-trust security architecture with Azure AD B2C, hierarchical and granular permissions, multi-tenant data isolation via Owner and Access Level value objects, and HIPAA-compliant audit trails using SQL Server temporal tables
•Architected full-stack reusability framework with Angular 18 component inheritance (base Details, List, Create extending 60+ components), backend Custom Controller base class (450+ endpoints), consistent API patterns (/list, /details, /create, etc.), and end-to-end type safety
•Built enterprise service layers implementing Angular Http Base Service with typed operations and interceptors (auth, loading, error handling), backend Security Service providing user context across all controllers, permission-based route guards on both frontend (Security Guard) and backend (Has Permission attributes)
•Created comprehensive UI component library with 20+ reusable form controls, consistent validation patterns, and Material Design theming system used across all feature modules
•Established DevOps excellence with 15+ Azure DevOps pipelines, zero-downtime blue-green deployments, and automated quality gates
•Integrated AI/ML through Azure Functions for data processing, web scraping, HTML cleaning pipelines, and provider enrichment supporting Azure Foundry AI

Technologies Used

.NET 8/9C#Angular 18TypeScriptEntity Framework CoreMediatRAzure AD B2CAzure FunctionsAzure Service BusAzure Key VaultAzure DevOpsSQL ServerQuartz.NETMaterial DesignHIPAA Compliance

Clean + DDD + CQRS

patterns

11+ Microservices

microservices

Zero Exceptions

result Pattern

Event-Driven

event Driven

Principal Software Engineer

Solis Health Plans

2018-05 - 2023-06

Remote

Designed and implemented multiple enterprise-level microservices for Medicare Advantage and healthcare systems using Clean Architecture, DDD, and CQRS.

Key Achievements

•Delivered modules for Enrollment, Membership, Provider, Grievance & Appeals, and FHIR services using Azure Cloud
•Implemented FHIR Server with custom patient/consent resources and proxy processors
•Led E2E/API integrations with CMS, NIPR, and Checkr, including metrics, alarms, and dashboards
•Built configurable dynamic-form framework cutting UI development time by 80%
•Automated business processes reducing human interaction and errors by 60%+
•Created shared authentication, authorization, and logging libraries used across teams
•Led CI/CD, pull requests, code reviews, and TDD-based testing; mentored new developers

Technologies Used

.NET CoreC#AngularAzureFHIREntity FrameworkClean ArchitectureDDDCQRSAzure DevOpsTDD

80% UI development time reduction

time Reduction

60%+ error reduction through automation

automation

CMS, NIPR, Checkr integrations

integration

Tech Scrum Master / .NET Developer

Ryder Systems

2017-11 - 2018-05

Miami, FL

Led agile transformation while building microservices and REST APIs using .NET Core and Azure technologies.

Key Achievements

•Built RESTful APIs with Swagger documentation, custom middleware pipeline, and base controller inheritance reducing boilerplate
•Developed microservices using .NET Core 2, EF Core with Repository/UoW patterns, Redis caching, and Azure AD authentication
•Mentored developers on SOLID principles, design patterns, and unit testing while conducting code reviews and knowledge-sharing sessions
•Drove 50% velocity improvement as Scrum Master implementing Azure DevOps CI/CD, automated testing (70% coverage), and Agile coaching

Technologies Used

.NET Core 2C#Entity Framework CoreRedisAzure ADAzure DevOpsSwaggerScrumCI/CD

50% velocity improvement

velocity

70% test coverage

coverage

Dual role: Tech Lead & Scrum Master

role

Technical Lead

Beacon Health Options

2015-08 - 2017-11

Miami, FL

Introduced modern development practices and built REST APIs and automation frameworks for healthcare data exchange.

Key Achievements

•Introduced Azure DevOps, TDD, and CI/CD pipelines organization-wide, reducing deployment time by 60%
•Built REST APIs using .NET, Entity Framework, and SQL Server for healthcare data exchange and file processing with internal/external integrations
•Created comprehensive API automation framework using C# and Selenium improving regression test coverage by 75%
•Designed and implemented Edifecs integrations for Claims and Encounter modules processing thousands of healthcare transactions daily

Technologies Used

.NETC#Entity FrameworkSQL ServerSeleniumAzure DevOpsEdifecsTDDREST APIs

DevOps & TDD organization-wide

transformation

75% test coverage improvement

automation

REST API integrations

integration

Software Engineer

Royal Caribbean International

2012-06 - 2015-08

Miramar, FL

Contributed to the design and development of Espresso, a multimillion-dollar Java + AngularJS travel platform rewrite.

Key Achievements

•Built loyalty rewards using AngularJS for the UI and a REST API with integrations with internal/third-party systems
•Implemented unit, performance, and load testing (JUnit, TestNG)
•Awarded the Royal Caribbean WOW Award (2013) for engineering excellence

Technologies Used

JavaAngularJSREST APIsJUnitTestNGPerformance TestingLoad Testing

Royal Caribbean WOW Award (2013)

award

Full-stack AngularJS + REST API

development

Internal & third-party integrations

integration

Contact Information

joeldyscs@gmail.com

Remote

LinkedIn GitHub

Technical Skills

Languages & Frameworks

C#.NETASP.NET CoreEntity FrameworkTypeScriptJavaScript

Frontend Technologies

AngularHTML5CSS3BootstrapMaterial Design

Architecture & Patterns

MicroservicesClean ArchitectureDomain-Driven Design (DDD)CQRSResult PatternEvent-Driven Design

Cloud & DevOps

AzureAzure AD / B2CAzure DevOpsAzure Service BusAzure Key VaultAzure APIM

Testing & Quality

Unit TestingIntegration TestingArchitecture TestingTDDxUnitMoq

Security & Identity

OAuth 2.0OpenID Connect (OIDC)Azure AD B2CMSALJWTMulti-tenant Security

Languages

English (Fluent)
Spanish (Native)

Resume & Experience

Professional Experience

Principal Software Engineer

OOB Now

2023-06 - Present

Remote

Architected enterprise healthcare platform using Clean Architecture, DDD, CQRS, and event-driven patterns across multiple microservices.

Key Achievements

•Established enterprise pattern library with multiple shared NuGet packages implementing Result pattern, comprehensive inheritance hierarchies, and Template Method specifications, eliminating exceptions across hundreds of handlers and reducing code duplication and increasing standardization and code reusability
•Engineered IAM catalog microservice integrating Azure AD B2C with OIDC/OAuth 2.0, supporting the onboarding and maintenance of healthcare organizations through hierarchical RBAC (scopes), JWT-based authentication with custom claims enrichment, and Security Service providing multi-tenant isolation across all microservices
•Built event-driven architecture with domain and integration events, Outbox pattern for guaranteed delivery, Azure Service Bus integration, and Quartz.NET automation processing events with no message loss
•Delivered Provider Data Management (PDM) with NPPES integration, batch data import processing and validation, provider contracting, medical coding support (ICD-10, HCPCS, CPT), and using AI for data validation and enrichment
•Implemented zero-trust security architecture with Azure AD B2C, hierarchical and granular permissions, multi-tenant data isolation via Owner and Access Level value objects, and HIPAA-compliant audit trails using SQL Server temporal tables
•Architected full-stack reusability framework with Angular 18 component inheritance (base Details, List, Create extending 60+ components), backend Custom Controller base class (450+ endpoints), consistent API patterns (/list, /details, /create, etc.), and end-to-end type safety
•Built enterprise service layers implementing Angular Http Base Service with typed operations and interceptors (auth, loading, error handling), backend Security Service providing user context across all controllers, permission-based route guards on both frontend (Security Guard) and backend (Has Permission attributes)
•Created comprehensive UI component library with 20+ reusable form controls, consistent validation patterns, and Material Design theming system used across all feature modules
•Established DevOps excellence with 15+ Azure DevOps pipelines, zero-downtime blue-green deployments, and automated quality gates
•Integrated AI/ML through Azure Functions for data processing, web scraping, HTML cleaning pipelines, and provider enrichment supporting Azure Foundry AI

Technologies Used

.NET 8/9C#Angular 18TypeScriptEntity Framework CoreMediatRAzure AD B2CAzure FunctionsAzure Service BusAzure Key VaultAzure DevOpsSQL ServerQuartz.NETMaterial DesignHIPAA Compliance

Clean + DDD + CQRS

patterns

11+ Microservices

microservices

Zero Exceptions

result Pattern

Event-Driven

event Driven

Principal Software Engineer

Solis Health Plans

2018-05 - 2023-06

Remote

Designed and implemented multiple enterprise-level microservices for Medicare Advantage and healthcare systems using Clean Architecture, DDD, and CQRS.

Key Achievements

•Delivered modules for Enrollment, Membership, Provider, Grievance & Appeals, and FHIR services using Azure Cloud
•Implemented FHIR Server with custom patient/consent resources and proxy processors
•Led E2E/API integrations with CMS, NIPR, and Checkr, including metrics, alarms, and dashboards
•Built configurable dynamic-form framework cutting UI development time by 80%
•Automated business processes reducing human interaction and errors by 60%+
•Created shared authentication, authorization, and logging libraries used across teams
•Led CI/CD, pull requests, code reviews, and TDD-based testing; mentored new developers

Technologies Used

.NET CoreC#AngularAzureFHIREntity FrameworkClean ArchitectureDDDCQRSAzure DevOpsTDD

80% UI development time reduction

time Reduction

60%+ error reduction through automation

automation

CMS, NIPR, Checkr integrations

integration

Tech Scrum Master / .NET Developer

Ryder Systems

2017-11 - 2018-05

Miami, FL

Led agile transformation while building microservices and REST APIs using .NET Core and Azure technologies.

Key Achievements

•Built RESTful APIs with Swagger documentation, custom middleware pipeline, and base controller inheritance reducing boilerplate
•Developed microservices using .NET Core 2, EF Core with Repository/UoW patterns, Redis caching, and Azure AD authentication
•Mentored developers on SOLID principles, design patterns, and unit testing while conducting code reviews and knowledge-sharing sessions
•Drove 50% velocity improvement as Scrum Master implementing Azure DevOps CI/CD, automated testing (70% coverage), and Agile coaching

Technologies Used

.NET Core 2C#Entity Framework CoreRedisAzure ADAzure DevOpsSwaggerScrumCI/CD

50% velocity improvement

velocity

70% test coverage

coverage

Dual role: Tech Lead & Scrum Master

role

Technical Lead

Beacon Health Options

2015-08 - 2017-11

Miami, FL

Introduced modern development practices and built REST APIs and automation frameworks for healthcare data exchange.

Key Achievements

•Introduced Azure DevOps, TDD, and CI/CD pipelines organization-wide, reducing deployment time by 60%
•Built REST APIs using .NET, Entity Framework, and SQL Server for healthcare data exchange and file processing with internal/external integrations
•Created comprehensive API automation framework using C# and Selenium improving regression test coverage by 75%
•Designed and implemented Edifecs integrations for Claims and Encounter modules processing thousands of healthcare transactions daily

Technologies Used

.NETC#Entity FrameworkSQL ServerSeleniumAzure DevOpsEdifecsTDDREST APIs

DevOps & TDD organization-wide

transformation

75% test coverage improvement

automation

REST API integrations

integration

Software Engineer

Royal Caribbean International

2012-06 - 2015-08

Miramar, FL

Contributed to the design and development of Espresso, a multimillion-dollar Java + AngularJS travel platform rewrite.

Key Achievements

•Built loyalty rewards using AngularJS for the UI and a REST API with integrations with internal/third-party systems
•Implemented unit, performance, and load testing (JUnit, TestNG)
•Awarded the Royal Caribbean WOW Award (2013) for engineering excellence

Technologies Used

JavaAngularJSREST APIsJUnitTestNGPerformance TestingLoad Testing

Royal Caribbean WOW Award (2013)

award

Full-stack AngularJS + REST API

development

Internal & third-party integrations

integration