We are looking for an experienced TypeScript/JavaScript Engineer to design and develop an enterprise-grade Web Identity SDK, similar in nature to Auth0 SDKs, that will be consumed by multiple web applications.
This is not a UI-focused frontend role. The candidate should have robust knowledge of JavaScript/TypeScript internals, browser security, authentication, SDK/library development, CI/CD, and enterprise software engineering practices.
Key Responsibilities:
• Design, develop, test, and maintain reusable TypeScript/JavaScript SDKs and libraries.
• Build secure authentication and authorization capabilities for web applications.
• Work with OAuth 2.0, OIDC, JWT, PKCE, access tokens, session and token management.
• Handle browser security concepts such as CORS, Same-Origin Policy, cookies, browser storage, XSS, CSRF, and CSP.
• Design stable, secure, and developer-friendly SDK APIs for use by multiple applications.
• Develop unit, integration, and browser-based automated tests.
• Maintain CI/CD pipelines, NPM packaging, versioning, and release processes.
• Troubleshoot complex issues across browsers, authentication services, APIs, and consuming applications.
• Participate in architecture discussions, code reviews, production support, and continuous engineering improvements.
Requirements
Mandatory Skills:
• 5–10 years of software engineering experience.
• Strong hands-on experience with TypeScript and JavaScript.
• Deep understanding of JavaScript concepts such as async/await, Promises, event loop, closures, modules, and error handling.
• Experience building reusable SDKs, libraries, frameworks, or platform components.
• Strong understanding of browser internals, HTTP/HTTPS, and web security.
• Good knowledge of authentication and authorization concepts including OAuth 2.0, OIDC, JWT, and token lifecycle.
• Experience with NPM, package management, automated testing, and CI/CD.
• Strong debugging, analytical, and problem-solving skills.
Preferred S
📌 SDK Engineer Drive 9th Oct 2026 (India)
🏢 CCTech
📍 India