Thanmayee G

Thanmayee G

Sr .Net Full Stack Developer @ Johnson & Johnson

About

Seasoned .Net Full Stack Developer with 12+ years of experience designing, developing, and deploying enterprise-grade applications across healthcare, financial, banking, retail, and telecom domains. Proven expertise in building secure, scalable, and high-performance systems in both cloud-native and hybrid environments.Strong hands-on experience with .NET Core, C#, Angular 16, React, SQL Server, Azure, AWS, and enterprise EDI integrations (ANSI X12 – 820, 810, 835, 837). Specialized in implementing microservices, event-driven architecture, REST/SOAP APIs, and CI/CD pipelines to streamline delivery, automate workflows, and ensure PCI-DSS, SOX, and regulatory compliance.Experienced in developing cloud-native and serverless solutions using Azure Functions, Logic Apps, App Service, Azure SQL, AKS, and AWS Lambda, enabling high-volume transaction processing, automation, and operational efficiency. Adept at building responsive front-end applications with Angular, React, HTML5, CSS3, and TypeScript, delivering intuitive user experiences for financial and enterprise platforms.Strong background in security and identity management using Azure Active Directory, OAuth2, JWT, and RBAC, along with DevSecOps and cloud governance practices. Well-versed in SQL Server optimization, Entity Framework, LINQ, and ACID-compliant transactional systems.Hands-on exposure to AI/ML and GenAI integrations using Python, Azure Machine Learning, and REST APIs for fraud detection, predictive analytics, credit scoring, and conversational assistants. Known for mentoring teams, conducting code reviews, leading architectural discussions, and delivering audit-ready, production-grade solutions in complex enterprise ecosystems.

Country

-

City

United States

Industry

Computer Software

Skill

C++, ASP.NET MVC, Stored Procedures, Query Optimization, SOAP Web services, WCF, LINQ, jQuery, Restful API, JSON, Unit Testing, Entity Framework, ReactJS, Azure DevOps, Serverless Architecture, Agile/Scrum Methodologies, xUnit/NUnit, OAuth2/JWT Authentication, .NET Development, Web API Development

Experience

Johnson & Johnson

Sr .Net Full Stack Developer

Johnson & Johnson

LinkedIn
2024-3 - Present · 2 yrs 7 mos

Designed, developed, and deployed enterprise-grade integration solutions using .NET Core, C#, and Azure Cloud Services to support high-volume medical data transactions, ensuring security, scalability, regulatory compliance (HIPAA), and high availability. Collaborated closely with clinical stakeholders, product owners, compliance teams, and business analysts to gather requirements and translate complex healthcare workflows into detailed technical specifications for EDI and cloud integrations. Developed, configured, and maintained EDI mappings and translation workflows using healthcare standards such as HL7, X12 (837, 835, 270/271), ensuring accurate exchange of patient records, billing, and claims data across medical partners. Leveraged Azure Logic Apps, Azure Functions, and Azure App Service to orchestrate, automate, and monitor medical data workflows, improving processing efficiency, reconciliation accuracy, and audit readiness. Built and optimized secure backend services using ASP.NET Core Web APIs, integrating EDI transactions with electronic health record (EHR) systems, medical billing platforms, and insurance gateways following strict SLAs and data governance rules. Implemented robust data persistence and optimization strategies using SQL Server, Azure SQL, and advanced T-SQL, ensuring high performance, ACID compliance, data integrity, and transactional consistency for medical records. Coordinated with hospitals, insurance providers, and external medical partners to onboard, test, and validate EDI file transfers using SFTP, AS2, and secure APIs, resolving schema, reconciliation, and data quality issues end-to-end. Applied modern DevOps best practices by designing and maintaining CI/CD pipelines using Azure DevOps, enabling automated builds, testing, secure deployments, and environment consistency for healthcare applications.

Synchrony

.NET Full Stack developer

Synchrony

LinkedIn
2022-10 - 2024-2 · 1 yr 5 mos

Designed and developed scalable financial web applications using .NET Core, C#, and Angular 16, supporting banking transactions, loan processing, and portfolio management with high reliability and performance. Implemented Azure services including App Service, Azure Functions, Key Vault, and Azure SQL Database to enhance scalability, secure sensitive financial data, and reduce operational overhead. Built RESTful APIs with .NET Core and enabled secure integrations with third-party financial systems using OAuth 2.0 and OpenID Connect. Developed responsive UI components using Angular 16, TypeScript, RxJS, and state management, delivering seamless user experiences for customer and advisor portals. Integrated Azure DevOps YAML pipelines for CI/CD automation, enabling zero-downtime deployments, rollback strategies, and faster release cycles. Applied microservices architecture to modernize legacy banking systems into independent, reusable, and testable services. Created reusable Angular libraries and shared modules to standardize UI/UX across multiple financial applications. Designed and optimized SQL Server stored procedures and functions, performing performance tuning for high-volume transaction and account data. Leveraged Entity Framework Core and LINQ for efficient data access and ORM mapping. Implemented cloud-native resilience patterns including circuit breakers, retries, and Azure Redis caching for trading and payment applications. Collaborated within Agile/Scrum teams, contributing to sprint planning, backlog grooming, and code reviews. Implemented JWT-based authentication and Azure AD B2C with role-based access control. Enhanced reliability through unit testing (xUnit, NUnit) and end-to-end testing. Used Docker and AKS for hybrid deployments, SignalR for real-time alerts, and integrated SWIFT, FIX, ISO 20022 APIs. Applied AI/ML, MLOps, and GenAI solutions while ensuring PCI DSS and SOC 2 compliance.

Signature Bank

Sr. .NET Developer

Signature Bank

LinkedIn
2019-5 - 2022-9 · 3 yrs 5 mos

• Designed and developed scalable .NET Core applications for enterprise banking systems, ensuring high performance, reliability, and regulatory compliance. • Built and maintained RESTful APIs and microservices enabling secure integrations with payment gateways, credit bureaus, fraud detection, and AML/KYC services. • Collaborated with teams to deliver ReactJS front-end interfaces using React Hooks, Redux, and JavaScript ES6+, providing secure, responsive portals for customers and banking staff. • Leveraged AWS (EC2, S3, Lambda, RDS, API Gateway) to deploy cloud-native solutions, including serverless apps for real-time fraud monitoring and transaction alerts. • Implemented Entity Framework and SQL Server with optimized stored procedures and queries for high-performance data operations and compliance reporting. • Applied Agile/Scrum practices, contributing to sprint planning, daily stand-ups, and incremental product delivery aligned with evolving banking regulations. • Conducted code reviews, mentored junior developers, and enforced secure coding standards and best practices. • Developed unit and integration tests (xUnit, NUnit) to ensure reliability, reducing production defects and downtime. • Managed Git source control and automated CI/CD pipelines with Azure DevOps for efficient, secure deployments. • Implemented security best practices including OAuth2, JWT authentication, RBAC, encryption, and PCI-DSS compliance. • Optimized applications with caching strategies and asynchronous programming to support high-volume transaction processing. • Partnered with stakeholders to gather requirements and deliver technical solutions aligned with compliance, risk management, and customer experience goals. • Authored technical documentation and training materials to support maintenance, audits, and future enhancements. • Recommended modern technologies (.NET Core, React, AWS Cloud) to modernize banking systems and enhance scalability.

Costco Wholesale

.NET Developer

Costco Wholesale

LinkedIn
2015-11 - 2019-4 · 3 yrs 6 mos

• Developed and maintained .NET applications for Costco retail, ensuring high performance, scalability, and seamless user experience. • Designed and implemented React-based front-end components to enhance UI/UX and improve customer interaction across applications. • Utilized AWS services including EC2, S3, Lambda, and RDS to deploy, monitor, and manage retail apps efficiently. • Collaborated with cross-functional teams to gather requirements and translate them into robust C# and ASP.NET solutions. • Implemented RESTful APIs for integration between .NET back-end services and React applications. • Conducted code reviews, debugging, and troubleshooting to ensure high-quality, maintainable solutions. • Participated in Agile/Scrum ceremonies, providing estimates, reporting progress, and delivering features on schedule. • Applied Entity Framework and SQL Server for database design, optimization, and migration supporting retail operations. • Enhanced application security by adding authentication, authorization, and data encryption in .NET apps. • Integrated third-party services and APIs, including payment gateways and inventory systems, to streamline workflows. • Developed automated unit and integration tests using NUnit and MSTest to ensure reliability and reduce issues. • Optimized performance by analyzing code, queries, and React components for better load times and responsiveness. • Built CI/CD pipelines with Azure DevOps and AWS to automate deployments and shorten release cycles. • Maintained technical documentation and user manuals to support knowledge transfer and scalability. • Provided ongoing support and troubleshooting for live applications, ensuring availability and minimal downtime. • Stayed updated with .NET Core, AWS, and React trends to recommend innovative retail solutions.

Lumen Technologies

.NET Developer

Lumen Technologies

LinkedIn
2013-2 - 2015-10 · 2 yrs 9 mos

• Developed and maintained enterprise-level .NET apps using C#, ASP.NET MVC, and Web API, ensuring high performance and scalability for telecom solutions. • Designed and implemented SQL Server databases, writing complex stored procedures, triggers, and functions, and optimizing query performance. • Collaborated with cross-functional teams to analyze requirements, build custom solutions, and manage full lifecycle delivery for telecom applications. • Created and integrated RESTful and SOAP-based services to enable smooth communication between internal and external systems. • Applied OOP principles, Design Patterns, and SOLID practices to ensure modular and maintainable code. • Developed WCF services and integrated them with telecom platforms for real-time data processing. • Used Entity Framework and LINQ for efficient data access and mapping between relational databases and application objects. • Conducted unit testing and debugging with NUnit and MSTest, ensuring reliable and bug-free deployments. • Applied Agile/Scrum methodologies, participated in sprint planning, and provided consistent updates to stakeholders. • Enhanced front-end with HTML5, CSS3, JavaScript, and jQuery, delivering responsive and user-friendly telecom portals. • Improved performance through tuning, refactoring, and optimization, reducing telecom processing latency. • Integrated third-party APIs and cloud-based solutions (Azure/AWS) to enhance service delivery and scalability. • Maintained version control and collaboration using TFS/Git, ensuring code quality and effective change tracking. • Prepared technical documentation, user manuals, and deployment guides to support smooth knowledge transfer. • Mentored junior developers, promoting best practices and adherence to coding standards across projects.

Education

University of North Texas

University of North Texas

LinkedIn

Computer Science

Thanmayee G's Contact Information

Email

******@***.com

Phone

(**) *** ****

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