Cecil Douglas
Chicago, United States
Cecil Douglas
Dotnet Developer
Category : Web development
Experienced in integrating Azure OpenAI Service to build intelligent, AI-driven features that enhance
application functionality and user experience.
.NET Full Stack Developer with 10 years of experience building reliable backend systems using .NET, C#,
and ASP.NET.
Developed engaging frontends using React and Angular, ensuring user-friendly interfaces and seamless
integration with backend services.
Implemented DevOps workflows with Docker, Kubernetes, and Azure DevOps to enable smooth and
efficient software delivery.
Maintained high code quality using automated testing frameworks, including NUnit, xUnit, and Selenium for
backend and frontend.
Managed databases including SQL Server, PostgreSQL, and MongoDB, optimizing data structures,
queries, and overall performance.
Collaborated effectively with cross-functional teams, emphasizing communication, teamwork, and
alignment on project goals and deliverables.
Continuously learned emerging technologies and industry trends to introduce innovative solutions and
improve existing development processes.
application functionality and user experience.
.NET Full Stack Developer with 10 years of experience building reliable backend systems using .NET, C#,
and ASP.NET.
Developed engaging frontends using React and Angular, ensuring user-friendly interfaces and seamless
integration with backend services.
Implemented DevOps workflows with Docker, Kubernetes, and Azure DevOps to enable smooth and
efficient software delivery.
Maintained high code quality using automated testing frameworks, including NUnit, xUnit, and Selenium for
backend and frontend.
Managed databases including SQL Server, PostgreSQL, and MongoDB, optimizing data structures,
queries, and overall performance.
Collaborated effectively with cross-functional teams, emphasizing communication, teamwork, and
alignment on project goals and deliverables.
Continuously learned emerging technologies and industry trends to introduce innovative solutions and
improve existing development processes.
Working hours
- Monday:08h00 To 18h00
- Tuesday:08h00 To 18h00
- Wednesday:08h00 To 18h00
- Thursday:08h00 To 18h00
- Friday:08h00 To 18h00
- Saturday:Not available
- Sunday:Not available
● Leveraged Azure OpenAI Service to integrate AI-driven capabilities into enterprise applications, enhancing automation,
decision support, and user experience.
● Developed a Global Order Management System (GOMS) for Target using ASP.NET Core with ERP and CRM
integrations.
● Optimized high-volume order processing using TPL asynchronous programming, improving performance and
increasing overall system capacity.
● Implemented DNN (DotNETNuke) with custom themes and modules to enhance content management and user
experience.
● Integrated legacy and modern systems using ASP.NET Core, Azure Logic Apps, and Azure Service Bus for real-time
data synchronization.
● Upgraded applications from ASP.NET Core to .NET 6, managing breaking changes, refactoring code, and accelerating
debugging.
● Built a cross-platform GOMS application using .NET MAUI and Blazor Hybrid, resolving synchronization issues
through shared state services.
● Led a development team integrating Angular with ASP.NET Core, leveraging NgRx and RxJS for efficient state
management.
● Migrated frontend from Angular to React, implementing Hooks, lazy loading, and Redux to improve application
performance.
● Improved microservices data consistency using SQL Server Service Broker, enhancing reliability and query response
performance.
● Implemented CI/CD pipelines using Azure DevOps, Docker, Kubernetes, and Terraform for hybrid cloud deployments.
decision support, and user experience.
● Developed a Global Order Management System (GOMS) for Target using ASP.NET Core with ERP and CRM
integrations.
● Optimized high-volume order processing using TPL asynchronous programming, improving performance and
increasing overall system capacity.
● Implemented DNN (DotNETNuke) with custom themes and modules to enhance content management and user
experience.
● Integrated legacy and modern systems using ASP.NET Core, Azure Logic Apps, and Azure Service Bus for real-time
data synchronization.
● Upgraded applications from ASP.NET Core to .NET 6, managing breaking changes, refactoring code, and accelerating
debugging.
● Built a cross-platform GOMS application using .NET MAUI and Blazor Hybrid, resolving synchronization issues
through shared state services.
● Led a development team integrating Angular with ASP.NET Core, leveraging NgRx and RxJS for efficient state
management.
● Migrated frontend from Angular to React, implementing Hooks, lazy loading, and Redux to improve application
performance.
● Improved microservices data consistency using SQL Server Service Broker, enhancing reliability and query response
performance.
● Implemented CI/CD pipelines using Azure DevOps, Docker, Kubernetes, and Terraform for hybrid cloud deployments.
● Developed a secure, scalable EHR system using .NET Core, ensuring HIPAA compliance with encryption and
role-based access.
● Secured sensitive patient data using .NET Core Data Protection API and Azure Key Vault for centralized key
management.
● Built RESTful APIs with JWT authentication and OAuth2, optimizing performance using pagination, Redis caching,
and Swagger documentation.
● Optimized database queries with Entity Framework Core and integrated FHIR APIs to enable seamless healthcare
system interoperability.
● Improved system reliability using Polly for resilient retries and Azure Service Bus for asynchronous background
processing.
● Enabled real-time data synchronization using SignalR for live updates and Azure Cosmos DB for multi-region
replication.
● Developed frontend features using Angular, creating reusable components and managing application state with RxJS.
● Enhanced Angular performance by implementing OnPush change detection to improve rendering efficiency and
responsiveness.
● Designed a hybrid data architecture using SQL Server and Azure Cosmos DB, synchronized via Azure Functions and
Data Factory.
● Enhanced DNN-based applications by optimizing SQL Server queries to significantly reduce application load times.
● Implemented multi-tenant data isolation using SQL Server Row-Level Security, dynamic data masking, partitioning,
and indexing.
● Applied GitFlow in GitLab and configured CI/CD pipelines with automated conflict detection for stable, efficient
merges.
● Stabilized testing pipelines by mocking unreliable third-party APIs using WireMock to ensure consistent deployment
outcomes.
● Automated infrastructure management across AWS and Azure using Terraform with GitLab CI/CD for synchronized
environments.
● Adopted dual-track Scrum practices to balance regulatory compliance requirements while maintaining continuous
feature development.
role-based access.
● Secured sensitive patient data using .NET Core Data Protection API and Azure Key Vault for centralized key
management.
● Built RESTful APIs with JWT authentication and OAuth2, optimizing performance using pagination, Redis caching,
and Swagger documentation.
● Optimized database queries with Entity Framework Core and integrated FHIR APIs to enable seamless healthcare
system interoperability.
● Improved system reliability using Polly for resilient retries and Azure Service Bus for asynchronous background
processing.
● Enabled real-time data synchronization using SignalR for live updates and Azure Cosmos DB for multi-region
replication.
● Developed frontend features using Angular, creating reusable components and managing application state with RxJS.
● Enhanced Angular performance by implementing OnPush change detection to improve rendering efficiency and
responsiveness.
● Designed a hybrid data architecture using SQL Server and Azure Cosmos DB, synchronized via Azure Functions and
Data Factory.
● Enhanced DNN-based applications by optimizing SQL Server queries to significantly reduce application load times.
● Implemented multi-tenant data isolation using SQL Server Row-Level Security, dynamic data masking, partitioning,
and indexing.
● Applied GitFlow in GitLab and configured CI/CD pipelines with automated conflict detection for stable, efficient
merges.
● Stabilized testing pipelines by mocking unreliable third-party APIs using WireMock to ensure consistent deployment
outcomes.
● Automated infrastructure management across AWS and Azure using Terraform with GitLab CI/CD for synchronized
environments.
● Adopted dual-track Scrum practices to balance regulatory compliance requirements while maintaining continuous
feature development.
● Implemented a comprehensive Financial Insight System using .NET Framework, ASP.NET MVC, and SQL Server to
integrate multiple data sources.
● Enhanced data security using encryption and optimized performance through stored procedures and caching for large
financial datasets.
● Optimized nightly batch processing and system scalability in .NET Framework to reduce delays in financial reporting.
● Implemented role-based access control and custom logging with Azure Monitor to detect unauthorized access in real
time.
● Re-engineered transaction logic using Optimistic Concurrency Control in Entity Framework and row versioning in SQL
Server.
● Introduced Semaphore Slim locks to manage concurrent updates in batch settlements, preventing race conditions and
data conflicts.
● Integrated legacy COBOL reporting with .NET Core microservices, using RabbitMQ and ETL pipelines for seamless
real-time synchronization.
● Developed global exception handling using ASP.NET MVC middleware, Serilog, and ELK Stack for centralized
logging and monitoring.
● Collaborated with front-end developers to optimize RESTful APIs, resolving integration issues and improving
backend-UI communication.
● Automated testing with xUnit and Selenium to validate critical financial workflows and improve overall application
reliability.
● Partnered with DevOps to stabilize CI/CD pipelines using Docker and automation scripts for reliable deployments.
● Facilitated Agile ceremonies including stand-ups and sprint planning to improve project delivery and cross-team
collaboration.
integrate multiple data sources.
● Enhanced data security using encryption and optimized performance through stored procedures and caching for large
financial datasets.
● Optimized nightly batch processing and system scalability in .NET Framework to reduce delays in financial reporting.
● Implemented role-based access control and custom logging with Azure Monitor to detect unauthorized access in real
time.
● Re-engineered transaction logic using Optimistic Concurrency Control in Entity Framework and row versioning in SQL
Server.
● Introduced Semaphore Slim locks to manage concurrent updates in batch settlements, preventing race conditions and
data conflicts.
● Integrated legacy COBOL reporting with .NET Core microservices, using RabbitMQ and ETL pipelines for seamless
real-time synchronization.
● Developed global exception handling using ASP.NET MVC middleware, Serilog, and ELK Stack for centralized
logging and monitoring.
● Collaborated with front-end developers to optimize RESTful APIs, resolving integration issues and improving
backend-UI communication.
● Automated testing with xUnit and Selenium to validate critical financial workflows and improve overall application
reliability.
● Partnered with DevOps to stabilize CI/CD pipelines using Docker and automation scripts for reliable deployments.
● Facilitated Agile ceremonies including stand-ups and sprint planning to improve project delivery and cross-team
collaboration.
● Implemented encryption protocols and secure WCF services for a Dental Membership Management System, ensuring
data integrity and confidentiality.
● Designed authentication and authorization using ASP.NET Identity, implementing role-based access control and
multi-factor authentication for patient data.
● Integrated multiple healthcare systems using AES encryption and secure WCF services while maintaining HIPAA
compliance and data integrity.
● Developed policies and procedures for handling Protected Health Information, including encryption, secure
communication protocols, and regular audits.
● Collaborated with compliance teams to conduct risk assessments, strengthening security posture and reducing potential
data breach risks.
● Designed secure backend APIs in collaboration with frontend teams, maintaining encrypted communication and
HIPAA-compliant data handling practices.
● Managed version control using GitLab to coordinate secure API updates and maintain consistent encryption and
security standards.
● Implemented automated testing with NUnit and Postman to validate encryption, authentication flows, and secure data
handling.
● Partnered with DevOps to secure AWS infrastructure using Docker, ECS clusters, and protected environment variable
management.
● Worked in an Agile environment, collaborating with cross-functional teams through stand-ups, sprint planning, and
retrospectives for aligned delivery.
data integrity and confidentiality.
● Designed authentication and authorization using ASP.NET Identity, implementing role-based access control and
multi-factor authentication for patient data.
● Integrated multiple healthcare systems using AES encryption and secure WCF services while maintaining HIPAA
compliance and data integrity.
● Developed policies and procedures for handling Protected Health Information, including encryption, secure
communication protocols, and regular audits.
● Collaborated with compliance teams to conduct risk assessments, strengthening security posture and reducing potential
data breach risks.
● Designed secure backend APIs in collaboration with frontend teams, maintaining encrypted communication and
HIPAA-compliant data handling practices.
● Managed version control using GitLab to coordinate secure API updates and maintain consistent encryption and
security standards.
● Implemented automated testing with NUnit and Postman to validate encryption, authentication flows, and secure data
handling.
● Partnered with DevOps to secure AWS infrastructure using Docker, ECS clusters, and protected environment variable
management.
● Worked in an Agile environment, collaborating with cross-functional teams through stand-ups, sprint planning, and
retrospectives for aligned delivery.
Participated in club meetings, brainstorming sessions, and study groups,
fostering collaboration, teamwork, and exposure to diverse computer science
topics.
fostering collaboration, teamwork, and exposure to diverse computer science
topics.
- 🇬🇧 English
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