Hire the Best Auth0 Developers

Top-rated Full-Stack Developer with 12+ years delivering secure, scalable solutions that produce measurable business outcomes for global clients. What clients achieved with my work Reduced login friction and support costs by up to 80% after SSO rollouts (SAML, OAuth2, OIDC), improving user adoption and lowering helpdesk tickets. Cut user onboarding time from days to minutes via centralized identity flows and automated provisioning. Increased team productivity up to 40% with custom Office and Google Workspace add-ins that automate repetitive work and integrate third-party systems. Strengthened security and compliance (SOC2, ISO, GDPR) by implementing hardened IAM, PKI, and cryptographic document signing. Scaled multi-tenant SaaS to thousands of organizations with sub-second auth latency and 99.9% uptime. Accelerated go-to-market and recurring revenue growth by delivering modular auth and API platforms. Selected results & experience 100+ SSO integrations across Okta, Auth0, Azure AD/Entra ID, Google Workspace, AWS Cognito, Ping Identity, ADFS, Salesforce. Architected a multi-tenant Identity Broker (sso.id) enabling customers to connect multiple identity providers in minutes, boosting partner integrations and conversions. Built 15+ Office & Google Workspace add-ins (Word, Excel, Outlook, PowerPoint, Gmail, Sheets, Docs), saving teams hundreds of person-hours per month. Developed 20+ SaaS platforms from MVP to enterprise scale with AI automation and APIs (YouTube, AWS, Firebase, Microsoft Graph), improving engagement and monetization. Implemented PKI, PDF signing, and blockchain anchoring to reduce fraud risk and streamline audits. Technical stack Protocols: SAML, OAuth2, OpenID Connect, SCIM, JWT Platforms: Okta, Auth0, Azure AD/Entra ID, Google Workspace, AWS Cognito, Ping Identity, ADFS, Salesforce Frontend: React, Next.js, Vue, Angular, TypeScript Backend: .NET 8 / C#, Node.js, Python, PHP (Laravel, Django) Databases: MySQL, Oracle, MongoDB Specialized: PKI, cryptography, PDF signing, blockchain-secured documents Why hire me ROI-focused: $1.2M+ earned across 200+ projects with measurable improvements in security, productivity, and time-to-market. Business-first engineering: I reduce operational costs, accelerate onboarding, and unlock new revenue channels. Long-term partner: responsive, reliable, and focused on evolving systems as your business grows. Tell me about your auth, add-in, or SaaS challenge and I’ll outline how we can reduce risk, save time, and increase adoption.

I am a senior full stack and AI systems engineer with more than six years of experience building enterprise grade SaaS platforms and data driven applications. My focus is on designing backend architectures that handle complex workflows while delivering clean and intuitive user interfaces. One of my key projects was a B2B compliance management SaaS platform used by mid sized financial firms. The system allowed organizations to manage regulatory documents, internal audits, and risk assessments under a subscription model. I designed the backend using Django and PostgreSQL with a multi tenant architecture that ensured strict data separation between companies. I implemented role based access control, activity logging, and secure document storage. On the front end, I built a React dashboard that visualized compliance status and upcoming deadlines. The platform was deployed on AWS and structured to scale as new organizations onboarded. I also developed an AI powered reporting assistant within a business intelligence SaaS product. The goal was to allow users to generate summaries and insights from structured financial data using natural language queries. I built backend services in FastAPI, integrated OpenAI models, and implemented controlled prompt templates to ensure consistent and structured outputs. The AI layer was designed to operate within each tenant’s data boundary, preventing cross account access. This feature increased user engagement and reduced the time required to prepare executive reports. In another project, I built a subscription based learning management system for professional training providers. The platform supported multiple organizations, course management, user progress tracking, and payment integration. I handled system architecture, API development, database optimization, and containerized deployment using Docker. Performance improvements reduced page load times and improved system reliability during peak enrollment periods. I approach development with a long term mindset. I think about scalability, auditability, security, and cost efficiency from the beginning. I work closely with product owners to translate business requirements into technical systems that are stable and maintainable. Main Skills ✔️ Enterprise SaaS Development ✔️ Multi Tenant Architecture ✔️ React ✔️ Next.js ✔️ Python ✔️ Django ✔️ FastAPI ✔️ Node.js ✔️ PostgreSQL ✔️ REST API Development ✔️ OpenAI API Integration ✔️ Role Based Access Control ✔️ AWS ✔️ Docker

Hi, I'm Ghulam — a React Native + Expo developer building cross-platform mobile apps for iOS and Android since 2021. I help startups, agencies, and product teams ship production-ready apps — from MVP to App Store / Play Store launch — with clean code, scalable architecture, and reliable communication. ━━━━━━━━━━━━━━━━━━━━━━━━━━━ What I do best ━━━━━━━━━━━━━━━━━━━━━━━━━━━ → React Native (CLI + Expo) cross-platform development → iOS and Android publishing (App Store, Play Store, TestFlight, EAS) → Backend integration — NodeJS, Express, NestJS, REST, GraphQL → Authentication — Firebase, Supabase, JWT, OAuth, Apple and Google Sign In → Payments — Stripe, RevenueCat (Apple IAP), Google Pay → Push notifications, deep linking, real-time features (Socket IO) → AI integrations — OpenAI API, chatbots, smart automation → Performance optimization, bug fixing, legacy app rescue → Full-stack web — NextJS, React, ThreeJS, Tailwind, Supabase ━━━━━━━━━━━━━━━━━━━━━━━━━━━ Recent projects ━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✓ Sol Hour — Real-time interactive DJ avatar platform with ThreeJS and React Three Fiber, Supabase auth, and Stripe payments (NextJS full-stack web) ✓ Fenzro — AI-powered business management mobile app with sales tracking, invoicing, and dashboard analytics (React Native + Expo) ✓ Movie Streaming App — Native iOS and Android with custom video player, offline downloads, and subscriptions (React Native) ✓ Full-Stack Marketplace App — Buyer and seller mobile app with in-app chat, payments, and reviews (React Native + NodeJS + MongoDB) ✓ E-Commerce Mobile App — Product catalog, cart, Stripe checkout, and order tracking (React Native + Firebase) ✓ Booking and Appointment App — Calendar integration, push notifications, and real-time scheduling (React Native + Express) ━━━━━━━━━━━━━━━━━━━━━━━━━━━ Why clients work with me ━━━━━━━━━━━━━━━━━━━━━━━━━━━ ⭐ 100% Job Success Score ⭐ 5 out of 5 ratings on every completed project ⭐ Daily updates and clean GitHub commits ⭐ Honest scoping — no over-promising ⭐ Available 30+ hours per week — fast response (under 4 hours) If you have an idea, a half-built app, or a production issue — send a message. I will review your project and tell you honestly if I am the right fit. ━━━━━━━━━━━━━━━━━━━━━━━━━━━ Keywords ━━━━━━━━━━━━━━━━━━━━━━━━━━━ React Native Developer | React Native Expo | iOS Developer | Android Developer | Mobile App Developer | Cross-Platform Developer | TypeScript | JavaScript | NodeJS | Express | MongoDB | Firebase | Supabase | Stripe | RevenueCat | OpenAI API | REST API | GraphQL | ThreeJS | React Three Fiber | NextJS | MVP Developer | Startup App Developer | App Store Deployment | Performance Optimization

Building a secure SSO (SAML, OAuth, OIDC) and multi-IdP IAM systems for real-world production environments. I help SaaS platforms and enterprises implement enterprise SSO and resolve complex SAML, OAuth, and AD/LDAP across Google, Okta, Entra ID (Azure AD), Keycloak, Auth0 and AWS Cognito with seamless user experience. 🎯 What I Help You Achieve → Implement SSO (SAML / OAuth / OIDC) across Okta, Entra ID, Keycloak, Auth0, AWS → Enable multi-IdP authentication for SaaS platforms → Resolve SSO failures (SAML errors, OAuth callbacks, redirect loops) → Design secure authentication & authorization architectures → Implement SCIM provisioning and lifecycle automation → Support enterprise customer onboarding with SSO (B2B SaaS integrations) 🔐 Core IAM Expertise ✅ SSO / Identity Federation → SAML SSO, OAuth 2.0, OpenID Connect (OIDC) → Multi-IdP integration (Okta, Entra ID, Keycloak, Google, Auth0, AWS) → Enterprise SSO for SaaS (multi-tenant, domain-based login) → Identity federation design and custom authentication flows ✅ Authorization & Access Control → RBAC / ABAC implementation → Fine-grained authorization (OpenFGA, OPA) → Secure API authentication & token validation (JWT lifecycle) → Session management and access policy enforcement ✅ MFA & Security → MFA: OTP, TOTP, WebAuthn, YubiKey, Push → Conditional access & adaptive authentication → Step-up authentication and risk-based flows ✅ User Lifecycle & Provisioning → SCIM 2.0 integrations → AD / LDAP sync → Automated provisioning & deprovisioning → Identity migration and federation transitions ✅ Troubleshooting Complex SSO & OAuth Issues → SAML assertion and metadata issues → OAuth redirect / callback errors → Token validation and session misconfigurations → Infinite redirects, login failures, federation issues 🛠️ Identity Platforms Primary: Okta • Microsoft Entra ID • Keycloak • Auth0 • AWS Cognito • Google Workspace Enterprise: Ping • OneLogin • ForgeRock • IBM Verify • Shibboleth • ADFS • WSO2 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 expertise in SAML, OAuth, OIDC internals (not just configuration) → Strong debugging capability for complex identity issues → Experience building multi-tenant SaaS authentication systems → Clean, production-ready implementations with documentation ⚙️ Tech Stack Java • Node.js • Python • Golang • TypeScript • .NET • PHP Spring Security • Express • Django • React • Angular SAML2 • OAuth2 • OIDC • JWT • SCIM • MFA • WS-Fed • RBAC AWS • OCI • Docker • Kubernetes • CI/CD 📌 Available for hourly, fixed-rate, and long-term IAM engagements Let’s make identity your strongest layer, secure, scalable, and seamless.

React Native + Expo developer who takes apps from an empty repo to live on the App Store and Google Play. Five years in, usually the only mobile engineer, shipping AI, health, and marketplace apps and rescuing the ones that crash, lag, or get rejected Some of what I've shipped: Fitra360: an AI wellness platform that analyzes DNA, bloodwork, symptoms, and lifestyle data to generate personalized health and routine plans. FIXA: a car services and AI diagnostics app with camera-based tire scanning and Elasticsearch-powered search, in production. Gayar: Kuwait's first car parts marketplace. Three years in production with full ad-platform integration (TikTok, Snap, Meta, Google) and deep-linked campaigns. Other production work spans health insurance telemedicine, Saudi enterprise ERP (POS, inventory, geofenced HR attendance), university apps with campus security systems, and AI-assisted real estate platforms. The work tends to land in two buckets. New builds: production React Native + Expo apps from MVP through enterprise scale. AI features like health analysis, in-app assistants, image recognition, and smart recommendations. Healthcare and telemedicine platforms with video consultations, secure data, and prescriptions. Marketplaces and e-commerce apps with deep linking and full event tracking. Enterprise ERP, POS, inventory, and HR systems. Supabase, Firebase, and GraphQL backends (auth, RLS, realtime, edge functions, storage). Pixel-perfect UI from Figma, REST and GraphQL APIs, push notifications, in-app purchases, geolocation, maps, geofencing, deep linking. App Store and Google Play submissions end-to-end, including rejection appeals. Rescues: crashes, white screens, broken navigation. Performance issues like slow lists, laggy animations, high memory, slow cold start. Auth and session problems (Supabase, Firebase, OAuth, expo-auth-session). App Store and Play Store rejections. TestFlight build and distribution issues. Send a quick description, a Loom, or an error log. I'll come back with a clear plan, a realistic timeline, and what it'll actually take.

✅ Meta App Approvals — Guaranteed. Or You Don't Pay. While others guess their way through Meta's review process, I've spent 10+ years engineering the systems behind it. I don't just get approvals. I build the products that need them. 📊 The Numbers: 🏆 260+ Projects Completed 💰 $200K+ Earned on Upwork ⭐ Top Rated Plus | Top 3% Globally | 5-Star Rated 🚀 60+ Apps Approved in the last 6 Months 🔐 400+ Permissions Secured 🛠️ 30+ SaaS Products Built from scratch on Meta APIs Most freelancers submit your app with hope but I know exactly what Meta's reviewers want because I've been in this ecosystem since before most developers knew the API existed. 🎯 You bring the vision. I'll bring the build and the badge. 🚫 Rejected by Meta? I fix that fast. If you're hitting the "Invalid Screencast" wall or stuck in an endless rejection loop, you're not alone and you're in the right place. I've rescued hundreds of clients from exactly this situation. I handle everything, I record the screencast myself, prepare the full submission, and manage direct communication with Meta's review team until you're approved. Most clients get the green light in 1–10 business days. Meta & Social Platform Approvals: ✅ Meta App Reviews or API Permission Approvals Expert ✅ Facebook App Review Expert ( Facebook Pages & Instagram & Ads & Threads) API Permissions Approval for Advanced Access ✅ Facebook API permissions Approval Expert ✅ Instagram API Permissions Approval Expert ✅ Meta Marketing / Ads API Permissions Approval Expert ✅ Threads API Permissions Approval Expert ✅ Expert Facebook/Instagram/Telegram/WhatsApp Chatbot Developer ✅ Expert in API integration ✅ Expert Facebook API Developer ✅ Expert Instagram API Developer ✅ Facebook Tech Provider/ Access Verification Expert ✅ Facebook Business Account Verification Consultant ✅ Meta App Data Deletion Request Callback Implementation ✅ TikTok Marketing Developer App Approval Expert ✅ TikTok Developer API App Approval Expert ✅ Expert in Marketing Automation Software ✅ Expert in WordPress Plugin Development ✅ Worked with PHP Script and SaaS selling company Codecanyon, Jvzoo, Warrior+Plus. ⭐ Why clients come back: I don't hand you a checklist and disappear. I'm in the trenches with you — writing, recording, submitting, and negotiating — until Meta says yes. 𝗜𝗻𝘀𝘁𝗮𝗴𝗿𝗮𝗺 𝗔𝗣𝗜 (𝗜𝗻𝘀𝘁𝗮𝗴𝗿𝗮𝗺 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗟𝗼𝗴𝗶𝗻) instagram_business_basic, instagram_business_manage_comments, instagram_business_manage_messages, instagram_business_manage_insights 𝗙𝗮𝗰𝗲𝗯𝗼𝗼𝗸 𝗔𝗣𝗜 𝗣𝗲𝗿𝗺𝗶𝘀𝘀𝗶𝗼𝗻𝘀 pages_read_user_content, pages_manage_posts, pages_show_list, pages_manage_metadata, pages_user_locale, pages_user_gender, pages_manage_engagement, pages_messaging, read_insights, pages_read_engagement, pages_user_timezone, Business Asset User Profile Access 𝗜𝗻𝘀𝘁𝗮𝗴𝗿𝗮𝗺 𝗚𝗿𝗮𝗽𝗵 𝗔𝗣𝗜 (𝗙𝗮𝗰𝗲𝗯𝗼𝗼𝗸 𝗟𝗼𝗴𝗶𝗻) instagram_basic, instagram_content_publish, instagram_manage_comments, instagram_manage_messages, instagram_manage_insights, Instagram Public Content Access, Human Agent, instagram_branded_content_ads_brand, instagram_branded_content_brand 𝗠𝗲𝘁𝗮 𝗠𝗮𝗿𝗸𝗲𝘁𝗶𝗻𝗴 / 𝗔𝗱𝘀 𝗔𝗣𝗜 business_management, ads_read, ads_management, pages_manage_ads, leads_retrieval, catalog_management 𝗧𝗵𝗿𝗲𝗮𝗱𝘀 𝗔𝗣𝗜 threads_basic, threads_content_publish, threads_keyword_search, threads_manage_insights, threads_manage_mentions, threads_manage_replies, threads_read_replies 𝗪𝗵𝗮𝘁𝘀𝗔𝗽𝗽 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗔𝗣𝗜 whatsapp_business_messaging, whatsapp_business_management 🛠️ What I Do: I specialized in Meta API development and social media SaaS products — from Facebook Graph, Marketing, and Messenger APIs to Instagram (Graph, Business), WhatsApp Business & Cloud API, Threads, Twitter/X v2, Pinterest, Reddit, Shopify, integrations. I also handle Webhook, IPN, and Cron Job setups end to end. SaaS Products I've Built: Instagram Comment & DM Automation, Facebook Ads Creation Portals, Social Media Posting Platforms, AI Chatbots powered by OpenAI & ChatGPT for Messenger and Instagram, CRM Dashboards, and Marketing Automation Software. I've worked with ChatPion, Stackposts, and ChatWoot. Any white-label social media tool — I've seen it and can get it approved. ⚙️ Tech Stack: JavaScript (TypeScript,React,Next.js,Node.js, Express, Vue), Python, PHP (Laravel, CodeIgniter), MySQL, PostgreSQL,MongoDB,Redis,AWS,Git 💬 What Clients Say: ⭐ "Mir was an absolute game-changer. Deep understanding of Meta's API ecosystem — permissions, configurations, best practices. If you need a Meta API expert who is highly skilled and a pleasure to work with, Mir is the person to hire." — Sheila, USA ⭐ "Best guy on Upwork for API development. We already hired him on another project." — Marius, Romania ⭐ "His knowledge of FB and API integration is really deep and comprehensive. Very happy." — Fabrizio, Italy ⭐ "Anything Meta app permission related, he'll fix it for you." — Roy, USA