
Rekha Devi engineered robust backend and frontend features across DEFRA’s epr-calculator and epr-payment repositories, focusing on data integrity, workflow reliability, and user enablement. She delivered API-driven cost calculation and payment modules using C#, ASP.NET Core, and Entity Framework Core, implementing features such as dynamic fee calculation, CSV export, and health monitoring. Her work included database migrations, DTO design, and integration of external APIs, with careful attention to validation, error handling, and unit testing. By refactoring codebases and standardizing workflows, Rekha improved maintainability and reduced operational risk, demonstrating depth in backend architecture and cross-service data consistency within complex regulatory domains.

June 2025 performance summary focused on delivering robust payment-related capabilities, strengthening reliability, and enabling dynamic routing for post-payment flows. Key business value includes automated fee calculation, a resilient payment API, and configurable post-payment navigation for different requestor types.
June 2025 performance summary focused on delivering robust payment-related capabilities, strengthening reliability, and enabling dynamic routing for post-payment flows. Key business value includes automated fee calculation, a resilient payment API, and configurable post-payment navigation for different requestor types.
May 2025 across the DEFRA payment suite: three core capabilities were delivered to strengthen data integrity, user enablement, and API-based pricing workflows. Key deliverables include seeding essential Group and SubGroup lookup data in the EPR Payment Service with AppDbContext updates and new migrations; enabling user creation in the payment front-end with development secrets to support secure local testing; and introducing a Registration Fee API in the facade to calculate fees for re-processors and exporters, featuring robust input validation, DTO definitions, and unit tests. No major bugs were reported within the scoped work. Overall impact: improved data consistency, faster onboarding for users, and a scalable foundation for pricing workflows across services. Technologies and skills demonstrated include EF Core data seeding and migrations, secure development secret management, API design and validation, DTO modeling, and unit testing.
May 2025 across the DEFRA payment suite: three core capabilities were delivered to strengthen data integrity, user enablement, and API-based pricing workflows. Key deliverables include seeding essential Group and SubGroup lookup data in the EPR Payment Service with AppDbContext updates and new migrations; enabling user creation in the payment front-end with development secrets to support secure local testing; and introducing a Registration Fee API in the facade to calculate fees for re-processors and exporters, featuring robust input validation, DTO definitions, and unit tests. No major bugs were reported within the scoped work. Overall impact: improved data consistency, faster onboarding for users, and a scalable foundation for pricing workflows across services. Technologies and skills demonstrated include EF Core data seeding and migrations, secure development secret management, API design and validation, DTO modeling, and unit testing.
April 2025: Delivered core frontend enhancements for Calculation Runs, standardized confirmation workflows, and introduced health monitoring to boost reliability and business value. Highlights include deleting calculation runs and adding Scenario4 classification UI, fixing navigation to align with new screens, unifying confirmation models and constants, and adding a health check suite with tests and endpoint registration. These efforts improved user efficiency, reduced navigation errors, and enhanced observability and maintainability of the epr-calculator-frontend.
April 2025: Delivered core frontend enhancements for Calculation Runs, standardized confirmation workflows, and introduced health monitoring to boost reliability and business value. Highlights include deleting calculation runs and adding Scenario4 classification UI, fixing navigation to align with new screens, unifying confirmation models and constants, and adding a health check suite with tests and endpoint registration. These efforts improved user efficiency, reduced navigation errors, and enhanced observability and maintainability of the epr-calculator-frontend.
March 2025 summary focusing on delivering a cleaner API surface, more robust data pipelines, and improved developer quality and UX across the EPR Calculator suite. The month delivered a streamlined API, cleaner migration history, expanded data export capabilities, standardized terminology, and stronger testing coverage, bringing measurable business value through reduced risk, easier maintenance, and more reliable data flows.
March 2025 summary focusing on delivering a cleaner API surface, more robust data pipelines, and improved developer quality and UX across the EPR Calculator suite. The month delivered a streamlined API, cleaner migration history, expanded data export capabilities, standardized terminology, and stronger testing coverage, bringing measurable business value through reduced risk, easier maintenance, and more reliable data flows.
Summary for 2025-02: Focused on reliability and data integrity in the DEFRA/epr-calculator-service. No new features were released this month; the priority was to strengthen robustness of HDC data handling to ensure accurate tonnage calculations and stable reports. The implemented changes reduce risk of report errors and support accurate waste-stream analytics for stakeholders.
Summary for 2025-02: Focused on reliability and data integrity in the DEFRA/epr-calculator-service. No new features were released this month; the priority was to strengthen robustness of HDC data handling to ensure accurate tonnage calculations and stable reports. The implemented changes reduce risk of report errors and support accurate waste-stream analytics for stakeholders.
Month: 2025-01 | Summary focusing on key accomplishments and impact for DEFRA/epr-calculator-api. Hardening CalculatorRun request handling via input validation and standardized error responses to improve reliability and business value.
Month: 2025-01 | Summary focusing on key accomplishments and impact for DEFRA/epr-calculator-api. Hardening CalculatorRun request handling via input validation and standardized error responses to improve reliability and business value.
December 2024 performance summary focused on delivering core cost-calculation features, improving calculation clarity across regions, and enhancing the Calculation Run workflow in the frontend, underpinned by robust testing and data integrity practices.
December 2024 performance summary focused on delivering core cost-calculation features, improving calculation clarity across regions, and enhancing the Calculation Run workflow in the frontend, underpinned by robust testing and data integrity practices.
Summary for 2024-11: Delivered end-to-end support for lapcap uploads across frontend and backend, enhanced data integrity for uploaded Lapcap files, and introduced country apportionment calculation to improve cost reporting. Completed UI/backend changes, added DB columns and migrations, and expanded tests to validate state and data consistency. This work strengthens traceability, accuracy of disposal costs, and overall reporting capabilities.
Summary for 2024-11: Delivered end-to-end support for lapcap uploads across frontend and backend, enhanced data integrity for uploaded Lapcap files, and introduced country apportionment calculation to improve cost reporting. Completed UI/backend changes, added DB columns and migrations, and expanded tests to validate state and data consistency. This work strengthens traceability, accuracy of disposal costs, and overall reporting capabilities.
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