The client is a leading UK-based provider of accounting, payroll, and HR solutions. They offer integrated, cloud-based products that help organizations improve efficiency, ensure compliance, and reduce administrative workload. The company focuses on simplifying complex business processes and enabling better decision-making through data-driven insights.
The client sought to modernize their financial platform. The system was built on an older version of AngularJS (1.5.8), which impacted supportability, delivery efficiency, security compliance, and scalability. The risks were operational and compounding, making incremental remediation increasingly unsustainable.
Following were the key issues:
Platform Risk and Technology Obsolescence: These challenges increased exposure in a regulated operating environment and constrained long-term viability
- The use of AngularJS 1.5.8 exposed the platform to security vulnerabilities as it has reached its end-of-support phase.
- Extensive reliance on jQuery introduced significant security and maintenance risk
- Large form states and unmanaged memory leaks led to a performance degradation
Architecture and Delivery Inefficiencies: This reduced engineering productivity and limited the ability to evolve the platform safely
- Managing 100+ controllers with embedded business logic complicated maintenance
- Maintaining over 1,100 lines of tightly coupled routing configuration created inefficiencies
- Limited alignment with modern CI/CD and DevOps practices restricted the platform's ability to evolve.
Operating within a regulated environment, the Cybage team initiated a front-end modernization program to ensure the platform remained sustainable, secure, and capable of supporting future enhancements. We leveraged GenAI tools to accelerate development and streamline the modernization process while maintaining high reliability and compliance standards. The response focused on controlled modernization rather than wholesale disruption. Following engineering solutions were applied:
- We developed a parallel Modern Angular application alongside the legacy AngularJS system, enabling module-by-module migration with isolated QA validation and minimal operational disruption.
- We applied Cursor AI to accelerate front-end refactoring activities while enforcing coding standards and maintaining human review for auditability.
- Our team integrated tools such as ESLint and Snyk into the development lifecycle to surface issues early, supported by penetration testing at major releases and SOC audit alignment.
- We redesigned routing to align with Angular Router conventions and decomposed controllers to separate business logic from presentation concerns.
- NgRx was introduced to establish predictable, centralized state management, addressing performance issues caused by large form states and unmanaged memory usage.
- We uplifted the backend from .NET 4.6.2 to .NET 4.8, with a defined roadmap toward.NET 10 (LTS) to ensure long-term supportability and compatibility.
- Dedicated comparison environments were established to continuously validate functional parity between legacy and modernized components throughout the transition.
This approach emphasized stability, traceability, and controlled delivery.
