Senior React Developer

Contract Length: 3 months Rate: 500-550 p/d Inside IR35

We are seeking a highly skilled engineer with deep expertise in React and Single Sign-On (SSO) implementations, particularly Okta. The successful candidate will combine strong front-end development skills with proven experience in authentication and identity management.

• Modernize and refactor an existing Fix UI application:

  • Update outdated codebase to current React standards.

  • Improve maintainability and performance.

• Implement multi-tenant architecture within the UI.

• Integrate the application with SSO solutions, ensuring flexibility to connect with:

  • OAuth / OpenID Connect

  • SAML

  • Okta (primary client requirement).

• Deliver clean, scalable, and secure code aligned with best practices.

• Collaborate with internal teams to ensure smooth integration and deployment.

• Expert-level React development (hooks, state management, modern patterns).

• Strong background in SSO implementation and identity protocols.

• Hands-on experience with Okta integration.

• Knowledge of OAuth 2.0, OpenID Connect, and SAML.

• Experience building multi-tenant applications.

• Ability to refactor and modernize legacy codebases.

• Familiarity with other identity providers (Azure AD, Auth0, Ping Identity).

• Experience in secure coding practices and compliance frameworks.

• Strong problem-solving and communication skills.