Job Description Insight Global is seeking two Senior React Developers to lead the front-end transformation of a client's legacy UHX engineering application suite. These individuals will be responsible for translating complex legacy VB6 interfaces into a modern, maintainable, and user-friendly React-based experience. The current application suite contains numerous user-interface forms, custom controls, internal UserControls, and externally supplied OCX components that must be analyzed and replaced or redesigned. The Senior React Developers will work closely with the Technical Lead / Solution Architect, .NET Developers, QA Automation Engineer, Heat Transfer SME, and client stakeholders to ensure the modernized user experience continues to support critical engineering workflows. Key Responsibilities
- Design and develop modern React-based user interfaces to replace legacy screens and workflows.
- Translate existing VB6 forms and user interactions into reusable React components.
- Preserve critical user workflows while improving application maintainability and consistency.
- Partner with .NET Developers to integrate front-end components with APIs, application services, and business logic.
- Establish reusable component patterns that support consistent implementation across the UHX application suite.
- Identify legacy UI behaviours or controls that cannot be directly reproduced and recommend modern alternatives.
- Replace outdated or unsupported ActiveX and OCX user-interface controls.
- Collaborate with end users and the Heat Transfer SME to understand complex engineering workflows represented in the interface.
- Implement data-entry workflows, form validation,



field dependencies, error states, navigation, and application feedback.
- Support the presentation of engineering calculations, data inputs, results, reports, and warnings.
- Debug functional and visual inconsistencies between legacy and modernized interfaces.
- Support automated UI and regression testing.
- Participate in sprint planning, code reviews, demonstrations, and defect resolution.
- Document the front-end architecture, shared components, and reusable design patterns.
- Work independently within a distributed Agile delivery team. Skills and Requirements Required Qualifications
- 7+ years of professional software development experience.
- 5+ years of hands-on front-end development experience.
- Solid production experience with React.
- Advanced JavaScript and/or TypeScript skills.
- Strong understanding of component-based application design.
- Experience developing complex forms, data-entry screens, dashboards, or workflow-intensive applications.
- Experience integrating React applications with .NET or REST APIs.
- Experience with front-end testing and debugging.
- Strong understanding of application state management.
- Experience with responsive design and modern accessibility practices.
- Strong Git and source-control practices.




- Experience operating within Agile software development teams.
- Ability to understand and modernize complex legacy user workflows.
- Ability to work independently and collaborate with distributed technical teams.
Success Measures
- Successfully recreate business-critical legacy workflows within the modern interface.
- Establish reusable front-end components that accelerate subsequent modernization work.
- Minimize user disruption while retiring legacy UI dependencies.
- Maintain seamless integration between the React presentation layer and .NET application services.
- Deliver a consistent, maintainable, and intuitive user experience.
- Reduce dependence on unsupported ActiveX and OCX controls. We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal employment opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment without regard to race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application or the recruiting process, please send a request to [email protected].

📌 INTL - Senior React Developer (Hyderabad)
🏢 Insight Global
📍 Hyderabad