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 strong 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 Skills:
- Experience with Auth0, Okta, MSAL, Cognito, or similar identity platforms.
- Knowledge of SSO, RBAC, scopes, permissions, and enterprise IAM concepts.
- Experience publishing and maintaining NPM packages.
- Knowledge of Webpack, Rollup, Vite, BrowserStack, Playwright, Cypress, or similar tools.
- Experience maintaining backward compatibility and Semantic Versioning for SDKs.
- Soft
Skills:
- Strong ownership and problem-solving mindset.
- Good communication and collaboration skills.
- Ability to work with architects, security teams, DevOps teams, and application developers.
- Self-motivated, detail-oriented, and quality-focused.
- Note: We are not looking for candidates whose primary experience is UI development, React components, CSS, or responsive page development.
- Preference is for engineers with experience in SDKs, JavaScript libraries, authentication, browser security, or web platform engineering.
- Benefits Benefits Opportunity to work with a dynamic and fast-paced engineering IT organization.
- Be part of a company that is passionate about transforming product development with technology.
