Senior .NET Developer and Solution Architect with a decade of experience in C#, .NET frameworks, Angular, React, SQL, and cloud platforms like Azure and AWS. Expertly led the design and development of cloud-native applications using microservices architecture. Played a pivotal role in the healthcare industry by ensuring HIPAA compliance and integrating standards such as FHIR, EHR, and HL7, contributing to a remarkable $3 million revenue growth for one organization. Skills C/C++, C#, Java, .NET frameworks, ASP.NET, .NET Core, MVC, Web API, Web Forms, Vb.Net, JavaScript, Typescript, Python, REST API, SOAP, JSON, XML, Angular, React, Vue.js, Razor, Blazor, WPF, HTML, CSS, Bootstrap, Microsoft SQL Server, T-SQL, Azure SQL, LINQ, ADO.NET, Entity Framework, Stored Procedure, MySQL, PostgreSQL, AWS Dynamo DB, Azure (DevOps, App Service, Storage, Functions, AI, Service Bus, Application Insights, Active Directory, AKS), AWS (Lambda, EC2, SNS, S3, CloudWatch, API Gateway, EKS), Microservices, Docker, Kubernetes, Jenkins, Terraform, RabbitMQ, Apache Kafka, SAGA, SDLC, TDD, Cypress, Jasmine, NUnit, XUnit, MS Test, JWT, OAuth 2.0, SAML, OpenID Connect, CI/CD, Git, Bitbucket, Jira, Agile/Scrum, Kanban, Visual Studio, VS Code

Donnell Ray

Senior .NET Developer and Solution Architect with a decade of experience in C#, .NET frameworks, Angular, React, SQL, and cloud platforms like Azure and AWS. Expertly led the design and development of cloud-native applications using microservices architecture. Played a pivotal role in the healthcare industry by ensuring HIPAA compliance and integrating standards such as FHIR, EHR, and HL7, contributing to a remarkable $3 million revenue growth for one organization. Skills C/C++, C#, Java, .NET frameworks, ASP.NET, .NET Core, MVC, Web API, Web Forms, Vb.Net, JavaScript, Typescript, Python, REST API, SOAP, JSON, XML, Angular, React, Vue.js, Razor, Blazor, WPF, HTML, CSS, Bootstrap, Microsoft SQL Server, T-SQL, Azure SQL, LINQ, ADO.NET, Entity Framework, Stored Procedure, MySQL, PostgreSQL, AWS Dynamo DB, Azure (DevOps, App Service, Storage, Functions, AI, Service Bus, Application Insights, Active Directory, AKS), AWS (Lambda, EC2, SNS, S3, CloudWatch, API Gateway, EKS), Microservices, Docker, Kubernetes, Jenkins, Terraform, RabbitMQ, Apache Kafka, SAGA, SDLC, TDD, Cypress, Jasmine, NUnit, XUnit, MS Test, JWT, OAuth 2.0, SAML, OpenID Connect, CI/CD, Git, Bitbucket, Jira, Agile/Scrum, Kanban, Visual Studio, VS Code

Available to hire

Senior .NET Developer and Solution Architect with a decade of experience in C#, .NET frameworks, Angular, React, SQL,
and cloud platforms like Azure and AWS. Expertly led the design and development of cloud-native applications using
microservices architecture. Played a pivotal role in the healthcare industry by ensuring HIPAA compliance and integrating
standards such as FHIR, EHR, and HL7, contributing to a remarkable $3 million revenue growth for one organization.
Skills
C/C++, C#, Java, .NET frameworks, ASP.NET, .NET Core, MVC, Web API, Web Forms, Vb.Net, JavaScript, Typescript,
Python, REST API, SOAP, JSON, XML, Angular, React, Vue.js, Razor, Blazor, WPF, HTML, CSS, Bootstrap, Microsoft SQL
Server, T-SQL, Azure SQL, LINQ, ADO.NET, Entity Framework, Stored Procedure, MySQL, PostgreSQL, AWS Dynamo
DB, Azure (DevOps, App Service, Storage, Functions, AI, Service Bus, Application Insights, Active Directory, AKS), AWS
(Lambda, EC2, SNS, S3, CloudWatch, API Gateway, EKS), Microservices, Docker, Kubernetes, Jenkins, Terraform,
RabbitMQ, Apache Kafka, SAGA, SDLC, TDD, Cypress, Jasmine, NUnit, XUnit, MS Test, JWT, OAuth 2.0, SAML, OpenID
Connect, CI/CD, Git, Bitbucket, Jira, Agile/Scrum, Kanban, Visual Studio, VS Code

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
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Language

English
Fluent
Javanese
Intermediate

Work Experience

Lead .NET Engineer at Emory Healthcare
June 1, 2023 - Present
Developed a secure EHR system using C#, .NET Core 6, Angular 16, TypeScript, and FHIR standards, enabling seamless interoperability for patient management and medication tracking while ensuring HIPAA compliance through encryption, audit logging, and strict access controls. Implemented 40+ REST APIs for the Appointment Scheduling System using ASP.NET Web API and HL7 protocols, enabling availability checks, automated reminders, and third-party calendar integrations. Led front-end application enhancements with Angular 6 and Kendo UI, improving accessibility for over 1,000 weekly active users. Migrated legacy systems to .NET Core 6, improving performance and modularity. Applied Test-Driven Development using NUnit, Moq, and Cypress, reducing production bugs. Optimized data retrieval by designing complex T-SQL queries for the Medical Research Data Repository, improving speed by 40%. Enhanced security using Azure Active Directory, OAuth 2.0, and JWT. Led cloud microservices architecture desig
Senior Full Stack Engineer at CGI
June 1, 2023 - July 10, 2025
Engineered robust backend solutions using .NET Core 6, Azure Functions, and AKS to deliver scalable enterprise solutions. Developed and maintained 10+ front-end apps with React.js, jQuery, and Blazor, ensuring responsive UIs. Influenced cloud architecture with Azure Logic Apps, Service Bus, Event Grid, and API Management. Orchestrated WCF services to enhance system interoperability. Integrated Apache Kafka for real-time event streaming to improve data processing and fault tolerance between microservices. Optimized MS SQL Server databases via 5,000+ lines of T-SQL and 20+ stored procedures, reducing query execution time by 25%. Implemented Entity Framework Core and Dapper optimizations to cut peak database load by 25% and improved reliability. Established Datadog logging and monitoring, decreasing issue resolution time by 40%. Adopted Kanban to streamline project workflows and feature delivery.
Full Stack Engineer at Soltech
November 1, 2020 - July 10, 2025
Developed end-to-end full-stack solutions for 10+ clients using .NET Framework/Core, Node.js, and AngularJS. Created 15 SOAP and REST APIs handling over 500 daily transactions. Built data-driven features leveraging Kendo UI Grid and React for advanced user dataset analysis. Reduced database query response times by 35% using Entity Framework with LINQ in Repository Pattern. Implemented test automation pipelines with Jasmine, Cypress, and Selenium raising code coverage to 90% and cutting production defects by 30%. Mentored junior developers via code reviews and training. Improved project efficiency by formalizing version control and Agile workflows using Git, Bitbucket, and JIRA.
Software Engineer at JPMorgan Chase & Co.
November 1, 2017 - July 10, 2025
Developed a document management system with secure storage, retrieval, and version control using C#, SQL Server, and ASP.NET MVC, increasing access speeds by 40%. Modernized applications by migrating from ASP.NET Web Forms to MVC 5 for better scalability and maintainability. Created RESTful APIs with ASP.NET Web API 2 for third-party integration. Built a comprehensive logging framework using log4net, enhancing monitoring and reducing debugging time by 25%. Automated workflows with PowerShell scripts, boosting productivity by 20%. Collaborated with cross-functional teams to identify critical issues and ensure timely delivery. Conducted performance testing and database query optimization, improving uptime by 15%.
Lead .NET Engineer at Emory Healthcare
June 1, 2023 - Present
Developed a secure EHR system using C#, .NET Core 6, Angular 16, TypeScript, and FHIR standards, ensuring HIPAA compliance with encryption, audit logging, and access controls. Implemented 40+ REST APIs for Appointment Scheduling using ASP.NET Web API and HL7 protocols for interoperability. Led front-end development with Angular 6 and Kendo UI enhancing accessibility for 1,000+ weekly users. Migrated legacy systems to .NET Core 6 improving performance, modularity, and compliance. Practiced Test-Driven Development with NUnit, Moq, and Cypress, reducing bugs. Optimized data retrieval performance by 40% for research. Enhanced security protocols using Azure Active Directory, OAuth 2.0, and JWT. Designed cloud microservices architecture on Azure using Service Bus and Azure Functions, increasing reliability and scalability by 40%.
Senior Full Stack Engineer at CGI
June 1, 2023 - July 10, 2025
Engineered backend solutions with .NET Core 6, Azure Functions, and AKS to provide scalable, high-performance enterprise systems. Developed and maintained 10+ front-end apps using React.js, jQuery, and Blazor. Utilized Azure Logic Apps, Service Bus, Event Grid, and API Management for optimized integrations. Orchestrated WCF services to enhance distributed systems communication. Integrated real-time event-streaming with Apache Kafka for microservices fault tolerance. Improved MS SQL Server database performance via 5,000+ lines of T-SQL and over 20 stored procedures, reducing query time by 25%. Used Entity Framework Core and Dapper to reduce database load by 25%, improving reliability. Established Datadog monitoring for 10 applications, cutting issue resolution time by 40%. Adopted Kanban for agile project workflows.
Full Stack Engineer at Soltech
November 1, 2020 - July 10, 2025
Delivered end-to-end full-stack solutions using .NET Framework/Core, Node.js, and AngularJS for 10+ clients. Developed 15 enterprise SOAP and REST APIs processing 500+ daily transactions. Created data-driven features for 1,000+ users using Kendo UI and React. Improved database performance with Entity Framework and LINQ, achieving a 35% reduction in query response times. Implemented automated testing pipelines with Jasmine, Cypress, and Selenium increasing code coverage to 90% and reducing defects by 30%. Mentored junior developers, fostering best practices through reviews and training. Enhanced project delivery using Git, Bitbucket, and JIRA with Agile workflows.
Software Engineer at JPMorgan Chase & Co.
November 1, 2017 - July 10, 2025
Conceived and implemented a document management system improving access speeds by 40% using C#, SQL Server, and ASP.NET MVC. Migrated legacy ASP.NET Web Forms applications to ASP.NET MVC 5 enhancing maintainability and scalability. Developed RESTful APIs for third-party integration using ASP.NET Web API 2. Built a comprehensive logging framework with log4net, improving monitoring and debugging times by 25%. Automated workflows with PowerShell scripts raising team productivity by 20%. Collaborated cross-functionally to deliver critical projects on time. Improved system uptime by 15% through performance testing and database optimizations.
Lead .NET Engineer at Emory Healthcare
June 1, 2023 - Present
Developed a secure EHR system using C#, .NET Core 6, Angular 16, TypeScript, and FHIR standards, ensuring seamless interoperability, patient management, and medication tracking with HIPAA compliance. Implemented over 40 REST APIs for Appointment Scheduling using ASP.NET Web API and HL7 protocols, enabled accessibility improvements on front-end applications, migrated legacy systems to .NET Core 6 boosting performance, and adopted Test-Driven Development reducing production bugs. Enhanced data retrieval by 40%, improved security protocols with Azure Active Directory, OAuth 2.0, and JWT, and designed a cloud-based microservices architecture on Azure resulting in increased reliability and scalability.
Senior Full Stack Engineer at CGI
June 1, 2023 - July 10, 2025
Engineered scalable backend solutions with .NET Core 6, Azure Functions, and AKS. Developed and maintained front-end applications using React.js, jQuery, and Blazor. Optimized cloud architecture leveraging Azure services, orchestrated WCF services for distributed systems interoperability, integrated Apache Kafka for real-time event streaming, optimized MS SQL Server database performance reducing query execution time by 25%. Established robust logging and monitoring with Datadog, adopted Kanban for improved workflows, and ensured timely project deliveries in Agile environments.
Full Stack Engineer at Soltech
November 1, 2020 - July 10, 2025
Delivered end-to-end full-stack solutions using .NET Framework/Core, Node.js, and AngularJS. Developed 15 enterprise-grade SOAP and REST APIs processing over 500 daily transactions. Created data-driven features with Kendo UI Grid and React for large datasets analysis. Improved database performance by 35% using Entity Framework and LINQ. Instituted automated testing pipelines increasing code coverage and reducing defects. Mentored junior developers and improved project workflow through Git, Bitbucket, and JIRA Agile practices.
Software Engineer at JPMorgan Chase & Co.
November 1, 2017 - July 10, 2025
Developed a document management system improving access speeds by 40%. Transitioned applications from ASP.NET Web Forms to MVC 5, improved maintainability and scalability. Created RESTful APIs enabling third-party integrations, implemented a logging framework reducing debugging time by 25%. Automated workflows with PowerShell scripts boosting team productivity by 20%. Collaborated with cross-functional teams to resolve issues and improved application uptime by 15% through performance testing and query optimization.
Lead .NET Engineer at Emory Healthcare
June 1, 2023 - Present
Developed a secure EHR system using C#, .NET Core 6, Angular 16, TypeScript, and FHIR standards, enabling seamless interoperability for patient management and medication tracking while ensuring HIPAA compliance through encryption, audit logging, and strict access controls. Implemented 40+ REST APIs for the Appointment Scheduling System using ASP.NET Web API and HL7 protocols, enabling availability checks, automated email/SMS reminders, and third-party calendar integrations. Led front-end development of 5+ applications using Angular 6 and Kendo UI with advanced accessibility features for 1,000+ weekly users. Migrated legacy systems to .NET Core 6, improved performance, scalability, and modularity. Applied Test-Driven Development practices using NUnit, Moq, and Cypress, reducing bugs and enhancing code quality. Improved data retrieval speeds by 40% for researchers via complex T-SQL queries on MS SQL Server. Enhanced security protocols using Azure Active Directory, OAuth 2.0, and JWT. Spe
Senior Full Stack Engineer at CGI
June 1, 2023 - July 17, 2025
Engineered robust backend solutions using .NET Core 6, Azure Functions, and Azure Kubernetes Service for scalable enterprise applications. Developed and maintained over 10 front-end applications with React.js, jQuery, and Blazor, ensuring responsive and user-friendly interfaces. Influenced cloud architecture through Azure Logic Apps, Service Bus, Event Grid, and API Management, optimizing system integration and performance. Orchestrated WCF services for interoperability among distributed systems to enhance application robustness and flexibility. Integrated a real-time event-streaming platform with Apache Kafka, increasing data processing throughput and system fault tolerance. Enhanced MS SQL Server database performance by optimizing 5,000+ lines of T-SQL scripts and designing over 20 stored procedures, reducing query execution times by 25%. Applied Entity Framework Core and Dapper to optimize database loads, improving reliability and user experience. Established logging and monitoring
Full Stack Engineer at Soltech
November 1, 2020 - July 17, 2025
Delivered end-to-end full-stack solutions for 10+ clients using .NET Framework/Core, Node.js, and AngularJS for responsive, user-centered applications. Created over 15 enterprise-grade SOAP and REST APIs for seamless system integrations processing 500+ daily transactions. Developed data-driven features using Kendo UI Grid and React to aid 1,000+ users with large dataset management through advanced sorting, filtering, and pagination. Improved database operations with Entity Framework and LINQ in Repository Pattern, reducing query times by 35%. Established automated testing pipelines using Jasmine, Cypress, and Selenium, increasing code coverage to 90% and reducing defects by 30%. Provided mentorship to junior developers via code reviews and training, fostering adherence to best practices. Enhanced project efficiency by implementing version control and Agile workflows with Git, Bitbucket, and JIRA for consistent delivery.
Software Engineer at JPMorgan Chase & Co.
November 1, 2017 - July 17, 2025
Designed and implemented a document management system with secure storage and version control using C#, SQL Server, and ASP.NET MVC, improving access speed by 40%. Modernized legacy applications by migrating ASP.NET Web Forms to ASP.NET MVC 5, enhancing maintainability and scalability. Developed RESTful APIs with ASP.NET Web API 2 supporting integration with third-party applications via JSON and XML. Created a logging framework with log4net for real-time monitoring, reducing debugging time by 25%. Automated workflows with PowerShell scripts, boosting team productivity by 20%. Collaborated cross-functionally to resolve critical issues ensuring timely delivery. Conducted performance testing and optimized database queries to improve application uptime by 15%.
Lead .NET Engineer at Emory Healthcare
June 1, 2023 - Present
Developed a secure EHR system using C#, .NET Core 6, Angular 16, TypeScript, and FHIR standards, ensuring HIPAA compliance through encryption, audit logging, and strict access controls. Implemented 40+ REST APIs for Appointment Scheduling with ASP.NET Web API and HL7 protocols. Led front-end development using Angular 6 and Kendo UI, introducing accessibility features for 1,000+ weekly users. Migrated legacy systems to .NET Core 6, boosting performance and modularity. Applied TDD using NUnit, Moq, and Cypress, reducing bugs and enhancing code quality. Optimized data retrieval by 40% using complex T-SQL queries. Enhanced security via Azure Active Directory, OAuth 2.0, and JWT. Led cloud microservices architecture design and deployment on Azure, improving reliability and scalability by 40%.
Senior Full Stack Engineer at CGI
June 1, 2023 - July 17, 2025
Engineered backend solutions using .NET Core 6 with Azure Functions and AKS for scalable enterprise applications. Developed and maintained 10+ front-end apps with React.js, jQuery, and Blazor. Utilized Azure Logic Apps, Service Bus, Event Grid, and API Management to optimize integration and performance. Orchestrated WCF services to improve system robustness. Integrated Apache Kafka for real-time event streaming, enhancing throughput and fault tolerance. Improved MS SQL Server performance by optimizing T-SQL and stored procedures, reducing query time by 25%. Applied Entity Framework Core and Dapper to lower database load by 25%. Established logging and monitoring with Datadog, improving issue resolution by 40%. Adopted Kanban to streamline project workflows.
Full Stack Engineer at Soltech
November 1, 2020 - July 17, 2025
Delivered end-to-end full-stack solutions using .NET Framework/Core, Node.js, and AngularJS across 10+ clients. Built 15 enterprise-grade SOAP and REST APIs processing 500+ daily transactions. Created data-driven features with Kendo UI Grid and React for 1,000+ users to analyze large datasets efficiently. Optimized database queries with Entity Framework and LINQ, improving response times by 35%. Implemented automated testing pipelines with Jasmine, Cypress, and Selenium, boosting code coverage to 90% and reducing defects by 30%. Mentored junior developers through code reviews and training. Enhanced project efficiency via version control and Agile workflows with Git, Bitbucket, and JIRA.
Software Engineer at JPMorgan Chase & Co.
November 1, 2017 - July 17, 2025
Developed a document management system with C#, SQL Server, and ASP.NET MVC, enhancing document access speed by 40%. Migrated legacy apps from ASP.NET Web Forms to MVC 5 for improved scalability. Built RESTful APIs with ASP.NET Web API 2 integrating third-party apps via JSON and XML. Created a logging framework with log4net, reducing debugging time by 25%. Automated workflows with PowerShell, increasing team productivity by 20%. Collaborated with cross-functional teams to ensure timely delivery of high-priority projects. Conducted performance testing and optimized database queries, improving app uptime by 15%.
Team Lead
June 1, 2023 - Present
Led the design and development of cloud-native applications using microservices architecture, focusing on HIPAA-compliant health-tech integrations (FHIR, EHR, HL7). Drove security hardening, encryption, audit logging, and access controls, contributing to approximately $3M in revenue growth for the organization.
Senior Backend Engineer at Confidential / Atlanta-based Employer
June 1, 2023 - October 10, 2025
Engineered robust backend solutions using .NET Core 6 and Python, leveraging Azure Functions and AKS to improve reliability, scalability, and performance across enterprise applications. Implemented 10+ front-end apps with React, Vue.js, jQuery, and Blazor; enhanced accessibility and user experience. Integrated security with OAuth/JWT to ensure HIPAA compliance. Drove cloud-native architecture using microservices and event-driven patterns.
Backend Engineer at SOLTECH
November 1, 2020 - October 10, 2025
Collaborated with 10+ clients to design and implement scalable backend and frontend solutions using .NET, Node.js, and AngularJS; delivered 15 REST and SOAP web services; established data flows and optimized ETL processes. Built data-driven interfaces with Kendo UI Grid; implemented centralized NuGet-based package distribution; improved inter-service communication with JSON/XML; integrated AWS DynamoDB, SQS for scalable cloud-native workloads.
Software Engineer at JPMorgan Chase & Co.
October 1, 2017 - October 10, 2025
Played a key role in the development and maintenance of C/C++ code for a Document Management System handling sensitive financial documents across five business units. Leveraged AWS services (S3 backups, Lambda) to enhance reliability and scalability. Reworked SQL queries (T-SQL) and PostgreSQL for faster data retrieval; conducted rigorous code reviews to align with security and compliance standards.
Senior Backend Engineer at SOLTECH
June 1, 2023 - Present
Developed a secure HIPAA-compliant EHR system using C#, .NET Core, Angular, and Azure/AWS. Led design and development of cloud-native microservices, HIPAA/EHR integration, and secure authentication/authorization with encryption and audit logging, enabling scalable, compliant healthcare workflows and contributing to revenue growth.
Backend Engineer at SOLTECH
November 1, 2020 - October 10, 2025
Collaborated with 10+ clients to design and implement scalable backend and frontend solutions using .NET, Node.js, and AngularJS; delivered responsive UI with HTML/CSS/Bootstrap, improving performance and user experience.
Backend Engineer at SOLTECH
October 1, 2017 - October 10, 2025
Led development and maintenance of C/C++ code for a Document Management System, leveraging AWS Lambda, Amazon S3, and Amazon RDS to improve reliability and scalability; designed 20+ SQL queries for data retrieval and conducted rigorous code reviews to reduce defects.
Team Lead / Senior Backend Engineer
June 1, 2023 - Present
Led the design and deployment of a cloud-native EHR system for healthcare, delivering HIPAA-compliant data handling. Implemented secure interoperability using C#, .NET Core 6, Angular 16, TypeScript, and FHIR HL7 standards; enforced encryption, audit logging, and strict access controls to protect sensitive patient information. Led 5+ frontend and backend engineers, spearheaded cloud-native architecture on Azure using microservices, service bus, and event-driven patterns; enhanced reliability and scalability.
Backend Engineer at CGI
June 1, 2023 - October 10, 2025
Engineered robust back-end solutions using .NET Core 6 and Python, leveraging Azure Functions and AKS to improve reliability and scalability of enterprise applications. Built 10+ RESTful APIs with Angular/React front-ends, integrated with HL7/FHIR for healthcare data flows, and implemented security with OAuth/JWT and Azure AD. Led DevOps using Terraform, Docker, Kubernetes, and CI/CD pipelines to accelerate deployment and reduce downtime.
Backend Engineer at SOLTECH
November 1, 2020 - October 10, 2025
Designed and implemented scalable backend and frontend solutions using .NET, JavaScript, AngularJS, and AWS. Built 15 REST/SOAP web services to support diverse projects, improved data flow processing, and ensured uninterrupted service delivery for 500 business transactions daily. Implemented data-driven UI with React and Kendo UI to support over 1,000 users; established centralized NuGet repository; reduced code duplication and improved version control across five teams. Introduced Kanban for project management to improve delivery times.
Software Engineer at JP Morgan Chase & Co.
October 1, 2017 - October 10, 2025
Played a key role in development and maintenance of a Document Management System used for managing sensitive financial documents across five business units. Leveraged C/C++, SQL, PostgreSQL, and AWS for secure backups (S3) and scalable databases; redesigned data retrieval scripts (20+ SQL) to improve accuracy and reduce errors; implemented cross-system communication via JavaScript/XML/JSON; improved code review process and security best practices.

Education

Bachelor’s degree at Georgia State University
January 1, 2015 - December 31, 2019
Bachelor’s degree at Georgia State University
January 1, 2015 - December 31, 2019
Bachelor’s degree at Georgia State University
January 1, 2015 - December 31, 2019
Bachelor’s degree at Georgia State University
January 1, 2015 - December 31, 2019
Bachelor’s degree at Georgia State University
January 1, 2015 - December 31, 2019
Bachelor's degree in Computer Science at Georgia State University
January 1, 2015 - January 1, 2019
Bachelor's degree in Computer Science at Georgia State University
January 1, 2015 - January 1, 2019
Bachelor's Degree in Computer Science at Georgia State University
January 1, 2015 - January 1, 2019

Qualifications

Add your qualifications or awards here.

Industry Experience

Healthcare, Financial Services, Software & Internet, Professional Services