Authentication System Development

OAuth 2.0
Expert
MFA/2FA
Security
SSO
Integration
From $10
Per Hour

Build secure, scalable authentication systems with OAuth 2.0, OpenID Connect, SAML, and modern identity management solutions. Our expert developers implement enterprise-grade authentication with JWT tokens, SSO integration, multi-factor authentication, and passwordless login flows.

From social login integrations (Google, GitHub, Apple) to custom authentication flows with role-based access control, we deliver authentication systems that protect your users while providing seamless login experiences across web and mobile platforms.

Authentication Capabilities

Comprehensive security solutions for modern applications

OAuth 2.0 & OpenID Connect

Industry-standard OAuth 2.0 flows with OpenID Connect for secure delegated access. Authorization code flow, PKCE, refresh tokens, and token introspection for modern web and mobile apps.

Multi-Factor Authentication

Enhanced security with MFA and 2FA using TOTP authenticators, SMS codes, email verification, and biometric authentication. Support for Google Authenticator, Authy, and hardware tokens.

Single Sign-On (SSO/SAML)

Enterprise SSO integration with SAML 2.0, LDAP, and Active Directory. Enable users to access multiple applications with one set of credentials across your organization.

Passwordless Auth (Magic Links, WebAuthn)

Modern passwordless authentication with magic links, email OTP codes, and WebAuthn/FIDO2 biometric authentication. Eliminate password fatigue while improving security and user experience.

Social Login (Google, GitHub, Apple)

Seamless social authentication integration with Google, GitHub, Facebook, Apple, Microsoft, and LinkedIn. Reduce signup friction while maintaining secure identity verification.

Role-Based Access Control (RBAC)

Granular permission systems with role-based and attribute-based access control. Define roles, permissions, and policies to control access to features and resources across your application.

Authentication Technology Stack

Industry-leading tools and frameworks

Auth Providers

  • Auth0
  • Clerk
  • Supabase Auth
  • Firebase Auth
  • AWS Cognito
  • Keycloak

Auth Libraries

  • Passport.js
  • NextAuth.js
  • Lucia
  • jose

Security

  • bcrypt
  • argon2
  • TOTP
  • WebAuthn/FIDO2

Backend

  • Node.js
  • Python
  • Go
  • .NET

Transparent Pricing

Choose the right authentication development plan for your needs

Starter

$10 /hour
  • Basic email/password auth
  • JWT token implementation
  • Password reset flows
  • Session management
  • Email support
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Most Popular

Professional

$25 /hour
  • Everything in Starter
  • OAuth 2.0 & OpenID Connect
  • Social login integration
  • MFA/2FA implementation
  • RBAC & permissions
  • Priority support
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Enterprise

$40 /hour
  • Everything in Professional
  • SSO/SAML integration
  • LDAP/Active Directory
  • Custom auth flows
  • Security audit & compliance
  • 24/7 dedicated support
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Frequently Asked Questions

Common questions about authentication development

Should I use Auth0 or build custom authentication?

Auth0 and similar providers (Clerk, Supabase Auth) are excellent for rapid development and offer enterprise-grade security out of the box. They handle OAuth flows, MFA, SSO, and compliance requirements. Custom authentication gives you complete control and can be more cost-effective at scale, but requires careful implementation of security best practices. We help you evaluate based on your budget, timeline, compliance needs, and scale requirements.

How do passwordless login systems work?

Passwordless authentication eliminates passwords using magic links (one-time URLs sent via email), OTP codes, or biometric authentication (WebAuthn/FIDO2). Users enter their email, receive a verification method, and gain access without remembering passwords. This improves security by eliminating password-related vulnerabilities (phishing, credential stuffing) while enhancing user experience. We implement passwordless flows with proper security measures including token expiration, rate limiting, and device verification.

What is the best way to implement role-based access control?

RBAC implementation depends on your application complexity. For simple apps, store roles with user records and check permissions in middleware. For complex systems, implement a permissions table with role-permission mappings and use attribute-based access control (ABAC) for granular control. We design permission systems that scale from basic role checks to enterprise-grade authorization with hierarchical roles, resource-level permissions, and dynamic policy evaluation.

Session-based vs token-based authentication: which is better?

Session-based auth stores user state on the server, making it easier to revoke access but requiring server affinity and shared session stores in distributed systems. Token-based auth (JWT) is stateless, scales horizontally, and works well for APIs and mobile apps, but requires careful token management and refresh strategies. For modern SPAs and mobile apps, we typically recommend JWT with refresh token rotation. For traditional server-rendered apps, session-based auth with secure cookies is simpler and often sufficient.

Build Secure Authentication Systems

Protect your users with enterprise-grade authentication, OAuth 2.0, SSO, and modern security practices.

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Tell us about your authentication requirements