Hire the Best Single Sign-On Freelancers
in India

I help SaaS platforms and enterprise applications design and implement secure and scalable Single Sign-On (SSO) and authentication systems using SAML, OIDC, OAuth, LDAP, and Kerberos. ✔ 500+ SSO integrations delivered ✔ Enterprise-grade identity systems ✔ Expertise in Auth0, Azure AD, Keycloak, and custom IdP development If your authentication system is critical to your business, I can help design and implement it correctly. I design and build custom Identity Providers (IdPs) and full authentication systems tailored to complex business requirements. If you're facing issues with authentication, SSO setup, or identity provider integration — I can help you design and implement a reliable, production-ready solution. ━━━━━━━━━━━━━━━━━━━ 🎯 I Can Help You With • SAML / OIDC SSO integration • Fixing broken authentication flows • Azure AD / Auth0 / Keycloak setup • Custom Identity Provider (IdP) development • LDAP / Active Directory authentication • Kerberos / SPNEGO (Windows SSO) ━━━━━━━━━━━━━━━━━━━ 🔐 SSO & Identity Expertise • SAML 2.0 (SSO, SLO, metadata, assertions) • OpenID Connect (OIDC) & OAuth 2.0 • Custom Identity Provider (IdP) development • LDAP / Active Directory integration • Kerberos authentication & SPNEGO (Windows Integrated Auth) • Multi-tenant authentication systems • MFA implementation & secure login flows Identity Providers: Auth0, Azure AD, Okta, Keycloak, Shibboleth, ADFS, Google Workspace, OneLogin, WSO2, Apereo CAS, SimpleSAMLphp ━━━━━━━━━━━━━━━━━━━ ☁️ Cloud & Serverless (Supporting Expertise) • AWS Lambda, API Gateway, Firebase, Azure Functions • Scalable backend architecture & microservices • CI/CD pipelines and cloud automation ━━━━━━━━━━━━━━━━━━━ 💻 Application Development (Supporting SSO Integrations) • ASP.NET MVC / .NET • Laravel / PHP • WordPress / CMS platforms I build secure applications with seamless SSO and API integrations. ━━━━━━━━━━━━━━━━━━━ 📱 Mobile Authentication Integration • iOS (Swift) & Android (Kotlin) • Secure login flows (OAuth/OIDC) • Backend + authentication integration ━━━━━━━━━━━━━━━━━━━ 🖥️ DevOps & Infrastructure • AWS, Azure, DigitalOcean • Linux / Windows Server • Nginx, Apache, IIS • SSL, deployment, scaling, and performance optimization ━━━━━━━━━━━━━━━━━━━ 🌟 Why Work With Me • Deep expertise in SSO & authentication systems • Proven experience delivering 500+ SSO integrations across SaaS and enterprise environments • Quick turnaround for SSO integrations and authentication fixes • Ability to build custom IdPs and full authentication flows • Strong enterprise authentication knowledge (LDAP, Kerberos, AD) • End-to-end delivery — from architecture to deployment ━━━━━━━━━━━━━━━━━━━ 💬 Let’s Talk Need help with: • SAML / OIDC SSO integration • Custom Identity Provider (IdP) development • LDAP / Active Directory authentication • Kerberos / SPNEGO setup • Fixing authentication issues • Identity provider setup (Auth0, Azure AD, etc.) Let’s discuss your requirements — I can help you implement a clean and scalable solution.

👋 Hey, I’m Pranav, Co-founder & CTO (Feather & NotionSender) I’m a full-stack engineer who loves building products from the ground up, the kind of systems that look simple on the surface but have rock solid engineering underneath. I’ve co-founded two products, Feather and NotionSender, and most recently built Feather’s complete newsletter platform entirely by myself. This includes everything: - The sending pipeline - Event ingestion (opens, clicks, bounces, complaints) - DKIM/SPF/DMARC onboarding - Warm-up workflows - Reputation-aware throttling - Segmentation, A/B testing, analytics - Dashboard, APIs, storage, rendering ...all of it The result? Customer newsletters on Feather consistently hit ~40% open rates, across different domains and industries something only well engineered deliverability systems can achieve. Most developers can send emails. Very few understand how to get them inboxed at scale. That’s the gap I fill. -- What I Bring to Your Project -- 1. Email Deliverability & Infrastructure I’ve built an ESP like layer from scratch, and can help with everything: - DKIM, SPF, DMARC, - DMARC RUA/RUF parsing + forensic analysis - Automated detection of spoofing attempts - Warm-up logic (per domain, per IP, per reputation score. This is the toughest one to crack) - Smart rate-limiting algorithms - Event pipelines: webhooks → queues → processors → dashboards - Inbox placement improvements (Gmail, Outlook, Yahoo) - Bounce classification, complaint handling, unsubscribe flows - Domain/IP reputation management - High volume sending logic - Custom analytics dashboards - Blocklist investigation and fixes If it affects inbox placement, sender reputation, routing, or email performance, I’ve built it. 2. Full-Stack Development & SaaS Architecture I’m equally comfortable building the product experience that users touch: - React, Tailwind - Modern TypeScript-based applications - Cloudflare Workers + Remix - Clean frontend architecture, reusable components - High-throughput backend pipelines - Scalable REST & GraphQL APIs - SQS-based background workers and async processing - Serverless architectures with AWS Lambda - Data modeling + analytics design - PostgreSQL, MySQL, DynamoDB, MongoDB - Stripe integrations, OAuth, authentication, permissions I specialise in turning messy ideas into clean, production ready systems. 3. Product Thinking As a CTO and founder, I understand: - onboarding flow design - user experience in technical systems - long-term maintainability - cost-efficient infrastructure - how to ship fast without creating chaos - the tradeoffs between complexity and speed - how the entire system should behave, not just one part This makes me especially effective in early stage products and refactoring broken systems. That’s it for the day. I won't bore you now. Let me know if you need my help. I would be happy to connect.

I'm a seasoned Full Stack Developer with over 11 years of hands-on experience in crafting dynamic and user-centric web applications. My passion for clean and efficient code, combined with my expertise in a wide range of technologies, has allowed me to deliver exceptional solutions that drive business success. Technical Proficiencies: ✔ Frontend: React, Angular, JavaScript, TypeScript ✔ Backend: Node.js, Nest.js, Express.js ✔ Databases: MongoDB, MySQL, PostgreSQL ✔ State Management: Redux, NgRx ✔ RESTful and GraphQL APIs ✔ Responsive Web Design ✔ Git Version Control What Sets Me Apart: 📌 Holistic Approach 📌 Problem Solver 📌 UI/UX Sensibility 📌 Agile Methodology 📌 Passionate Learner Why Work With Me: 📌 Proven Track Record 📌 Collaborative Approach 📌 Client-Centric Focus 📌 Timely Deliveries 📌 Long-Term Partnership Are you ready to bring your vision to life? Let's discuss how I can contribute to your project's success. Feel free to reach out to me with any questions or project proposals. I'm excited to collaborate with you!

I help SaaS companies implement Enterprise SSO using Okta SSO, Microsoft Entra ID (Azure AD) SSO, Google Workspace SSO, AWS Cognito SSO, Keycloak SSO and Auth0 SSO. I solve complex SAML SSO, OAuth SSO, OpenID Connect (OIDC), SCIM, AD/LDAP, MFA and identity federation challenges for enterprise SaaS platforms. From enterprise customer onboarding and multi-IdP authentication to identity migrations and production troubleshooting, I help organisations build secure, scalable identity solutions. 🎯 Identity & SSO Services → Implement Enterprise SSO using SAML 2.0, OAuth 2.0 and OpenID Connect → Integrate Okta, Microsoft Entra ID, Google Workspace, AWS Cognito, Keycloak and Auth0 → Enable multi-IdP authentication for SaaS platforms → Resolve SAML errors, OAuth callbacks, redirect loops and login failures → Design secure authentication and authorization architectures → Implement SCIM provisioning and user lifecycle automation → Support enterprise customer SSO onboarding for B2B SaaS 🔐 Core IAM Expertise ✅ Enterprise SSO & Identity Federation → SAML SSO, OAuth 2.0 and OpenID Connect (OIDC) → Multi-IdP and identity broker integrations → Enterprise SSO for multi-tenant SaaS platforms → Identity federation architecture and custom authentication flows → SSO migrations and identity modernisation ✅ Authorization & Access Control → RBAC and ABAC implementation → Fine-grained authorization using OpenFGA and OPA → Secure API authentication and JWT validation → Session management and access policy enforcement ✅ MFA & Authentication Security → OTP, TOTP, WebAuthn, Passkeys, YubiKey and Push authentication → Conditional Access and adaptive authentication → Step-up, passwordless and risk-based authentication ✅ User Lifecycle & Provisioning → SCIM 2.0 integrations → Active Directory and LDAP integration → Automated provisioning and deprovisioning → JIT provisioning and identity lifecycle automation → Identity and federation migrations ✅ SSO Troubleshooting → SAML assertions, metadata and certificate issues → OAuth callback, redirect and token exchange errors → OIDC authentication and JWT validation issues → Login failures, redirect loops and session problems → Production authentication and federation debugging 🛠️ Identity Platforms Primary Okta SSO • Microsoft Entra ID (Azure AD) SSO • Google Workspace SSO • AWS Cognito SSO • Keycloak SSO • Auth0 SSO • Sailpoint SSO Enterprise Ping Identity • OneLogin • ForgeRock • IBM Verify • Shibboleth • ADFS • WSO2 Identity Server Custom / Open Source Custom SAML SP/IdP • IdentityServer • SimpleSAMLphp • LDAP • RADIUS 🧠 Why Clients Work With Me → Delivered Enterprise SSO integrations across 20+ identity providers → Deep understanding of SAML, OAuth and OIDC internals, not just configuration → Strong debugging capability for complex authentication and federation issues → Experience designing multi-tenant SaaS authentication architectures → Production-ready implementations with clear documentation and knowledge transfer ⚙️ Identity Technology Stack SAML 2.0 • OAuth 2.0 • OpenID Connect • SCIM 2.0 • JWT • PKCE • MFA • WebAuthn • Passkeys • WS-Federation • Kerberos • Active Directory • LDAP • OpenFGA • OPA Java • .NET • Node.js • Golang • Python • TypeScript • PHP AWS • OCI • Docker • Kubernetes • CI/CD 📌 Available for Enterprise SSO implementations, IAM architecture, SSO troubleshooting, identity migrations and long-term IAM consulting. Let’s build an identity solution that is secure, scalable and seamless.

SSO developer with 8+ years of experience in to identity and access management.Possess good knowledge on integrating different apps using SAML/OIDC/OAUTH. Possess experience in using different libraries for saml/oidc that includes below programming langauge: ★ NodeJs ★ ReactJS ★NestJS ★ Angular ★ PHP/larvel ★ Python ★ .NET Possess experience in using different identity providers such as : ★ KeyCloak ★ AzureAD ★ PINGFed/PingOne ★ Auth0 ★ OKTA ★ ISAM/ISIM ★ AWS ★ SailPoint

✅ 100% Guaranteed Meta App Review Approvals, else no pay! 💡 15+ Years building on Facebook & Instagram APIs. Not just approvals. I build the actual products behind them. 🎖️ 250 Successful Projects | $150K+ Earned | Top Rated Plus | Top 3% | 5⭐ Consistently 🆕 200+ Apps Approved , 40+ in the last 90 days ✅ 1200+ Meta permissions advanced access approved. 🚀 Built 50+ SAAS Products from scratch using Meta APIs, all with full approvals. ■ Stuck with a rejected Meta review? Getting that "Invalid Screencast" rejection? I have been solving this for hundreds of clients since years. I record the screencast, prepare the submission, handle Meta's review team, and get you approved. Most clients approved within 3 to 7 days. ■ Meta App Review & API Permissions Approvals: ➡️ Meta App Review Expert (Facebook, Instagram, WhatsApp, Threads) ➡️ Facebook App Review for Advanced Access Permissions ➡️ Facebook Tech Provider / Access Verification Expert ➡️ Facebook Business Verification Consultant ✅ Facebook API Permissions Approval (Pages, Groups, Ads, Messenger) ✅ Facebook Pages API Permissions Approval Expert ✅ Instagram API Permissions Approval Expert ✅ Instagram Basic Display API Permission Approval ✅ Instagram Graph API & Business API Permissions Approval ✅ Meta Marketing API / Facebook Ads API Permissions Approval Expert ✅ Ads Management Standard Access Approval ✅ WhatsApp Business API & Cloud API Permissions Approval ✅ Threads API Permissions Approval Expert ✅ Meta App Data Deletion Request Callback Implementation ✅ Meta Webhooks Configuration & Verification ✅ Fixing Rejected App Reviews & Resubmission Strategy ✅ Verification Screencast Video Creation for Meta Reviews ■ Meta Permissions - 100% Guaranteed Approvals 𝗙𝗮𝗰𝗲𝗯𝗼𝗼𝗸: pages_manage_posts, pages_manage_engagement, pages_read_engagement, pages_read_user_content, pages_messaging, pages_show_list, pages_manage_metadata, read_insights, business_management, Human Agent, facebook_creator_marketplace_discovery, Business Asset User Profile Access 𝗜𝗻𝘀𝘁𝗮𝗴𝗿𝗮𝗺: instagram_basic, instagram_content_publish, instagram_manage_comments, instagram_manage_messages, instagram_manage_insights, Instagram Public Content Access, instagram_business_basic, instagram_business_content_publish, instagram_business_manage_messages, instagram_business_manage_comments, instagram_creator_marketplace_discovery, instagram_shopping_tag_products 𝗔𝗱𝘀: ads_management, ads_read, pages_manage_ads, Ads Management Standard Access, Marketing API 𝗪𝗵𝗮𝘁𝘀𝗔𝗽𝗽: whatsapp_business_messaging, whatsapp_business_management, catalog_management ➡️ Top products approved through me: Postiz, Social Native, Nector Social, Devotion, Ilola, Warmly AI, and hundreds more. ■ API Development & Integration Facebook Graph API, Facebook Marketing/Ads API, Facebook Messenger API & Chatbot Development, Instagram API (Basic Display, Graph, Business), WhatsApp Business & Cloud API, Threads API, Twitter/X API v2, Pinterest API, Reddit API, Bluesky API, Shopify API, OpenAI API, Webhook/IPN/Cron Job Integrations ■ SAAS & Products Built Instagram Comment & DM Automation, Facebook Ads Creation Portals, Social Media Posting Platforms, AI Chatbots with OpenAI & ChatGPT for Messenger & Instagram, CRM Dashboards, Marketing Automation Software. Worked with ChatPion, BotSailor, Stackposts, ChatWoot, CodeCanyon. Any white label social media tool, I have seen it and can get it approved. ➡️ Recent projects - Zapify, ReplyMagic, Consentz, Adrigo Insights, Elixo, and many more.. ■ Tech Stack JavaScript (TypeScript, React, Node.js, Next.js, Express, Vue), Python, PHP (Laravel, CodeIgniter), MySQL, PostgreSQL, MongoDB, Redis, Supabase, AWS, Git, OpenAI API, Stripe, PayPal, Razorpay, SendGrid, Mailgun, Twilio ■ Why Clients choose me? Not a middleman. 15 years in Meta. $400K+ spent on Facebook Ads. 50+ SAAS products built. I understand the review process from inside out because I have built the kind of apps they review, hundreds of times. One client approved in 36 hours. Another stuck for a month, approved in one go after hiring me. That is the difference between someone who reads docs and someone who lives in the API. ➡️ 245 jobs, 100% Job Success, Top Rated Plus, Top 3% of Global Talent ➡️ Clients from US, UK, Canada, Australia, Germany and 30+ countries ➡️ Available 24/7, any timezone. Slack, Zoom, Meet, Teams, WhatsApp, Telegram ➡️ Repeat clients come back 3, 4, 5 times. I am the guy you call when Meta changes something. ■ What Clients say ⭐ "Best FB Graph developer on the planet!" - Steve, Australia ⭐ "Facebook Graph API magician!" - Raph F, Canada ⭐ "After a month trying to get Instagram permissions, he fixed it in one go." - Samer, Lebanon ⭐ "Got the required permissions in only 36 hours." - Matthias, Germany Need a Meta App Review or a SAAS Product? Message me. Let us get it done. Saurabh Dhar | Meta API Expert Upwork Top 3%