Hire the Best Ab Initio Developers
in India

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
4.5/5
of Upwork by G2 peer reviewers
Rahul M.

Pune, India

$55/hr
5.0
36 jobs

Need a secure, seamless Single Sign-On (SSO) solution for your business? I can help. I’m a Senior IAM Consultant with 8+ years of experience specializing in Identity and Access Management (IAM). I design and implement robust authentication systems using Okta, Microsoft Entra ID (Azure AD), Keycloak, Shibboleth, OneLogin, Auth0, OpenFGA, and custom SAML 2.0, OAuth 2.0, and OpenID Connect (OIDC) providers. I also have expertise in LDAP, WS-Fed, RADIUS, JWT, and other authentication protocols to simplify access control and safeguard critical data. My Expertise: ✅ SSO & Authentication Solutions – Implementing SAML 2.0, OAuth 2.0, JWT-based logins, API key-based security, and server-to-server authentication. ✅ IAM Integration & Setup – Configuring Okta, Microsoft Entra ID, Keycloak, ADFS, OneLogin, Auth0, Identity Server 8, and other IAM providers, Simple SAML PHP. ✅ Troubleshooting Authentication Issues – Resolving login-related issues for SAML, OAuth, and custom identity providers. ✅ Fine-Grained Authorization – Deploying reverse proxy and bridge solutions, OpenFGA, and custom authorization mechanisms. ✅ User Provisioning & Governance – Secure provisioning/de-provisioning of users, groups, and resources via SCIM, custom scripts, or scheduled sync with databases, Active Directory, or other identity sources. ✅ Multi-Factor Authentication (MFA) & Identity Governance – Enhancing security with strong IAM policies. Technical Skills: I am proficient in PHP, Java, JavaScript, Python, Golang, Shell Scripting, and various frameworks, including Spring, Spring Boot, Node.js, React, Angular, Django, WordPress, CodeIgniter, Symfony, Laravel, Gin, and more. DevOps & Cloud Security: ✅ Cloud & On-Prem Infrastructure – Hands-on experience with AWS, EKS, EC2, Kubernetes (K8s), Docker, KAAS, SAAS, and on-prem deployments. ✅ Application Deployment & Security – Securing and deploying applications in cloud and on-prem environments. 🛠️ Identity Providers I’ve Worked With (100+): ✅ Google SSO login ✅ Microsoft Entra ID (Azure AD) SSO ✅ Okta SSO Integration ✅ Keycloak SSO ✅ Oracle IAM – OCI IAM, OAM, OIM ✅ Oracle Student Financial Aid (SFA) ✅ GitHub SSO ✅ Ping Federate SSO Login ✅ Auth0 Universal Login Setup ✅ OneLogin SSO Integration ✅ Shibboleth IdP/SP ✅ JumpCloud SSO Login ✅ ForgeRock IAM ✅ IdentityServer4/8 ✅ WSO2 Identity Server ✅ SimpleSAMLphp ✅ Custom SAML SPs ✅ AWS Cognito SSO ✅ Salesforce SSO ✅ G Suite Login ✅ Apple & Facebook OAuth ✅ Slack / Zoom OAuth Integration ✅ ADFS (Active Directory Federation Services) ✅ LDAP & RADIUS Authentication ✅ CyberArk Identity ✅ Centrify (now Delinea) ✅ IBM Security Verify / Tivoli Access Manager ✅ NetIQ Access Manager / Micro Focus ✅ Bitwarden SSO / Enterprise Login ✅ Duo SSO (Cisco Secure Access) ✅ VMware Workspace ONE Access (formerly vIDM) ✅ Zoho Directory / SSO ✅ Atlassian Access (Jira, Confluence SSO) ✅ SAP IAS / IPS ✅ Azure B2C & B2B Flows ✅ Facebook Workplace SSO ✅ Moodle SSO (via SAML / OIDC plugins) ✅ Canvas LMS SSO Integration ✅ OpenAM (legacy Sun Access Manager) ✅ FreeIPA / Red Hat SSO ✅ Ory Hydra / Kratos ✅ FusionAuth ✅ Gluu Server / Janssen Project ✅ NetIQ eDirectory SSO ✅ Apache Knox (for Hadoop ecosystem) ✅ IBM ISAM / ISVA ✅ Citrix Gateway (SSO via SAML/OAuth) ✅ Palo Alto Prisma Access (SAML Integration) ✅ CrowdStrike Falcon Identity ✅ BeyondTrust Identity Security ✅ Keeper Enterprise SSO ✅ Zoho One / Zoho Directory ✅ Freshworks SSO (Freshservice, Freshdesk) ✅ ServiceNow SSO Integration If you're looking for an IAM expert who can secure your authentication workflows, integrate IAM solutions, and troubleshoot identity-related challenges, let's connect!

  • Single Sign-On
  • Security Assertion Markup Language
  • OAuth
  • OKTA
  • Auth0
  • OneLogin
  • Linux
  • NGINX
  • User Authentication
  • Web Proxy
  • LDAP
  • Multi-Factor Authentication
  • Active Directory Federation Services
  • Shopify
  • Shopify Development
Pradeep K.

Erode, India

$15/hr
5.0
83 jobs

Why Choose Me as Your Development Partner? I’m a Senior Full-Stack & Mobile Developer (9+ years) who helps founders and teams turn ideas into production-ready web, mobile, and AI-powered products — fast, clean, and scalable. I combine strong engineering fundamentals with modern vibe-coding workflows to ship faster without cutting corners. ⸻ ✅ Proven Track Record • 🏆 Top 1% Rated Freelancer on Upwork • 🏆 1000+ hours of successful client delivery • 🏆 60+ projects delivered with consistent quality • 🏆 100% Job Success Rate • 🏆 Clean, maintainable, production-ready code ⸻ 🔧 Core Expertise (Full-Stack + Mobile) Frontend & Mobile • React, Next.js, Angular, Vue • React Native, Flutter, Ionic • TypeScript, JavaScript Backend • Node.js, Express • Java (Spring Boot) • Python, Go Databases & APIs • PostgreSQL, MongoDB • REST & GraphQL APIs • Elasticsearch • Vector databases (Pinecone, FAISS, Chroma) Cloud & DevOps • AWS (EC2, S3, Lambda) • Docker, Kubernetes • CI/CD (GitHub Actions, Jenkins) • Terraform (IaC) ⸻ 🤖 AI, RAG & Vibe Coding (Done Right) I build real AI systems, not demos. AI & RAG • OpenAI, Claude, Gemini integrations • End-to-end RAG pipelines (ingestion → embeddings → retrieval → re-ranking) • Secure data sources (PDFs, Docs, Notion, DBs, APIs) • AI chatbots for SaaS, internal tools, and customer support • Token cost & performance optimization Vibe Coding Workflow • Cursor, Windsurf, Claude Code • Replit & Replit Agent • Lovable.dev, Bolt.new • AI-assisted refactoring, testing, and reviews 👉 Human judgment + AI speed = reliable software ⸻ 🌟 How I Add Value I don’t just code — I: • Think like a product owner • Improve existing codebases without breaking things • Reduce tech debt and improve maintainability • Communicate clearly and proactively • Respect timelines, budgets, and existing architecture ⸻ 📩 Let’s Work Together If You Need ✔ Rapid MVPs or startup builds ✔ AI / RAG implementation ✔ Web or mobile app development ✔ Code cleanup, refactoring, or modernization ✔ A reliable long-term development partner 💬 I’m open to negotiation and long-term collaboration.

  • React
  • Angular
  • Node.js
  • PostgreSQL
  • MongoDB
  • Spring Boot
  • Golang
  • Python
  • Java
  • DevOps
  • Flutter
  • Ionic Framework
  • React Native
  • Vibe
  • Replit
Darshkumar D.

Surat, India

$15/hr
5.0
6 jobs

👋 About Me I am a Senior Full-Stack Software Engineer and Mobile Developer with 7+ years of experience building scalable web applications, native mobile apps, and intelligent backend systems. I have a proven track record of delivering secure, high-performance, and automated solutions across healthcare, government, e-commerce, and real-time systems. My core strength is my multi-stack versatility. I build robust backends using Python (Django, FastAPI, Flask) and Node.js, design dynamic frontends using React and Next.js, and engineer high-performance native mobile apps using Kotlin and Jetpack Compose. Additionally, I implement cutting-edge Agentic AI workflows, LLM integrations, and RAG-based applications to automate business processes. From handling high-throughput government platforms to setting up secure healthcare applications, I focus on clean architecture, performance optimization, and production-ready code quality. 🛠️ Core Technical Stack - Web & Full-Stack: React.js, Next.js, Node.js, TypeScript. - Backend Development: Python (Django, FastAPI, Flask), Java (SpringBoot), REST APIs. - Mobile Development: Android SDK, Kotlin, Java, Jetpack Compose, MVVM, Clean Architecture. - AI & Automation: Agentic AI Solutions, Google ADK, OpenAI Integration, Web Scraping (Selenium), RAG-Based Applications. - Databases & Cloud: PostgreSQL, MySQL, MongoDB, SQLite, Firebase Services, GCP Cloud Functions. - Tools & Platforms: GitHub, GitLab, Bitbucket, Docker, Jenkins (CI/CD), Jira, Azure DevOps. 🤝 Why Clients Work with Me -True Full-Stack Capability: I can seamlessly connect your React/Next.js frontend, Node.js or Python backend, and native Kotlin mobile app without needing to hire a separate developer for each layer. - AI & Automation Expertise: I don't just build basic apps; I inject efficiency into your business workflows using Agentic AI, tools integration, and smart automation. - On-Time & Within Budget: Awarded the Engineering Excellence Award for driving innovative solutions and delivering high-impact projects reliably. 💬 Let’s Work Together I offer a free consultation to discuss your idea, requirements, or existing app improvements. Let’s build a reliable, high-quality Android application that delivers real business value 🚀

  • NodeJS Framework
  • Python
  • React
  • Next.js
  • Java
  • Database
  • Android App
  • Firebase
  • JetPack
  • Kotlin
  • AWS Development
  • FastAPI
Shivani T.

Hamirpur, India

$15/hr
4.9
250 jobs

I am Certified Odoo Developer and Shopify Developer with 8+ years of experience working in this particular field. I specialize in Shopify Theme Development and Shopify Migrations. ✅Odoo Official Partner: As an official partner of Odoo, I gained access to a variety of perks and benefits, which are: Training and Certification: Partners often receive specialized training and certification programs, allowing them to become experts in implementing, customizing, and supporting Odoo solutions. Sales Support: Odoo provides partners with sales support, including access to marketing materials, sales collateral, and assistance in preparing proposals and demonstrations. Access to Resources: Partners often gain access to a wealth of resources, including technical documentation, development tools, and other resources to help them succeed in implementing and supporting Odoo solutions. Lead Generation: It provides partners with leads and referrals from customers looking for implementation, customization, or support services. Product Discounts: Partners receives discounts on Odoo subscriptions or other products and services, allowing them to offer competitive pricing to their clients. Networking Opportunities: Partner events, conferences, and forums provide networking opportunities with other Odoo partners and customers, facilitating collaboration and knowledge sharing. I am available 40 hrs/week to help you out. Hope to hear from you! Hit me up and I'm sure we can work this out for you! Thanks

  • Mobile App
  • Flutter
  • React Native
  • Odoo
  • Odoo Development
  • ERP Software
  • Shopify
  • Hybrid App Development
  • iOS Development
  • Android App Development
  • Ecommerce Website Development
  • Shopify Theme
  • Shopify Website Design
  • Shopify Templates
  • FlutterFlow
  • Shopify Plus
  • Shopify Development
  • Shopify Apps
  • Shopify Marketing
Ravi V.

Gurgaon, India

$20/hr
5.0
28 jobs

14+ yrs of development experience in SAP MDK(Mobile), SAP FIORI UI5( Full-Stack ) ABAP, ODATA, and CDS, SAP BTP, SAP Cloud(Public/Private) Worked with multiple Multi-National Clients and many individual clients. Worked on Intellipaat, AMDOCS, AT&T, Takeda Pharmaceuticals, Duponts, Earnst and Young, Sopra Steria, FIORI UI5 Implementations.

  • JavaScript
  • Node.js
  • HTML
  • CSS
  • SAP Fiori
  • Android App Development
  • ABAP
  • OpenUI5
  • SAP
  • SAPUI5
  • SAP Cloud Platform Integration
  • SAP Conversational AI
  • SAP HANA
  • SAP ERP
Aman K.

Hyderabad, India

$28/hr
4.3
6 jobs

Struggling to scale your .NET backend, integrate AI into your platform, or modernise a legacy system that's slowing your business down? I help SaaS founders and enterprise teams build fast, reliable, production-ready systems, from clean .NET microservices and modern Next.js frontends to AI-powered features that actually work beyond a prototype. With 7+ years of enterprise development, a 100% Job Success Score, and Top Rated status on Upwork, I have led full-stack delivery across logistics platforms, venture portfolio systems, insurance SaaS, and AI-driven document intelligence tools. 🔧 Backend & APIs .NET Core, C#, ASP.NET, Node.js, Express: Clean architecture, SOLID principles, multi-tenant systems, and REST APIs built to perform under real production load. I have designed bulk rating engines handling multi-carrier concurrent quoting, built dual-path data sync pipelines across Databricks and PostgreSQL, and architected customer onboarding flows with Keycloak, Cloudflare Turnstile, and automated email workflows. 🤖 AI Integrations OpenAI, LangChain, Databricks AI Gateway: I have shipped production AI features, not just demos. This includes a KPI extractor that pulls structured financial data from board decks and IR memos, intelligent workflow automation, and AI-driven dashboards for portfolio analytics. 🖥️ Frontend Development React, Next.js, Angular, TypeScript: Responsive, role-based UIs with SSR, App Router, PrimeNG, Material UI, MUI X Data Grid Pro, and Tailwind. I build interfaces that handle high-volume data tables with inline editing, sorting, filtering, Excel export, and stable performance under load. ☁️ Cloud & DevOps Azure, AWS, Docker, CI/CD pipelines, Azure DevOps, GitHub Actions: Reliable deployments, scalable infrastructure, and monitoring that keeps your system running without surprises. 🔐 Auth & Security Keycloak, Okta, AWS Cognito, Azure IAM: Enterprise-grade authentication, multi-tenant data isolation, and secure user provisioning built into the architecture from day one. 💳 Payments Stripe Checkout Sessions, webhook-based payment confirmation, refund workflows, and customer payment method management: Integrated end-to-end on production SaaS platforms. What sets me apart from other developers on this platform: 1. I don't just write features, I own the full delivery. Architecture, APIs, frontend, deployment, and post-launch support. 2. I have led cross-functional teams, handled task allocation, conducted code reviews, and mentored junior developers, so I understand the bigger picture beyond just code. 3. I communicate clearly, flag issues early, and never disappear mid-project. Every client I have worked with on Upwork has left a positive review. 4. I primarily work on fixed-price engagements delivering full project ownership and you get a complete solution, not billable hours with no finish line. Recent highlights: 1. Built a Bulk Rating Engine centralising batch quoting strategies with configurable throughput and multi-carrier best-rate selection for an enterprise logistics platform 2. Shipped an AI KPI Extractor using Databricks AI Gateway to extract structured financial metrics from board decks and filings 3. Architected a venture portfolio operations platform with Databricks SQL Warehouse, React admin portal, and document intelligence on Unity Catalog 4. Led end-to-end delivery of a multi-tenant insurance broker platform on Azure with Clean Architecture and async processing via Service Bus 5. Integrated Stripe Payments end-to-end on a production logistics SaaS: Checkout Sessions, webhooks, refunds, and subscription management Send me a message with your project details. I typically respond within a few hours and I am happy to discuss scope before you commit.

  • .NET Core
  • Node.js
  • Next.js
  • AI Implementation
  • Angular
  • React
  • TypeScript
  • SQL
  • PostgreSQL
  • MongoDB
  • Stripe
  • Docker
  • AWS Lambda
  • Microsoft Azure
  • AWS Development
  • AI Agent Development

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