Hire the Best OAuth Developers in San Francisco, CA

𝐇𝐢, 𝐈 𝐚𝐦 𝐀𝐝𝐚𝐦 𝐎𝐝𝐞𝐬𝐬𝐤𝐲. I've spent 𝐓𝐰𝐨 𝐃𝐞𝐜𝐚𝐝𝐞𝐬 following one thread: tinkering with technology → 𝐁𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 → delighting customers → disrupting industries → improving lives. That obsession took me from working as senior Full-Stack, AI engineer at 𝐌𝐢𝐜𝐫𝐨𝐬𝐨𝐟𝐭 and 𝐎𝐫𝐚𝐜𝐥𝐞 to founding Sensely - an early pioneer of Conversational AI and avatars in healthcare - scaling it globally. Most AI projects sometimes fail because the engineer doesn't understand the business, and the executive doesn't understand the tech. I am the exception. I am a GenAI, MCPs, LLMs specialized AI Engineer who speaks the language of the C-Suite. You get a production-grade system that actually solves your business problem (not just a demo) which scales with your company growing. 𝐑𝐄𝐂𝐄𝐍𝐓 𝐖𝐎𝐑𝐊 - 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐊𝐧𝐨𝐰𝐥𝐞𝐝𝐠𝐞 𝐂𝐨𝐩𝐢𝐥𝐨𝐭 (𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 + 𝐑𝐀𝐆) - Support reps dug through 40k+ policy docs and still answered wrong. Built a cited-answer copilot that cut handle time and new-hire ramp. Next.js 15 RSC + TypeScript, Node/tRPC, Postgres + pgvector hybrid search with cross-encoder reranking, per-tenant cost metering, LangSmith evals in CI. - 𝐒𝐞𝐧𝐬𝐞𝐥𝐲-𝐕𝐢𝐫𝐭𝐮𝐚𝐥 𝐇𝐞𝐚𝐥𝐭𝐡 𝐀𝐬𝐬𝐢𝐬𝐭𝐚𝐧𝐭 - Co-founded and scaled an empathy-driven conversational AI avatar used by the NHS, AXA, Generali & Mayo across 35+ countries; raised $26.5M; acquired by Mediktor. - 𝐌𝐮𝐥𝐭𝐢-𝐀𝐠𝐞𝐧𝐭 𝐑𝐞𝐯𝐞𝐧𝐮𝐞 𝐎𝐩𝐬 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 (𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 + 𝐆𝐞𝐧𝐀𝐈) - A GTM org was leaking pipeline to manual CRM hygiene and slow follow-up. Built agents that research accounts, draft outreach, and update CRM records under human approval. LangGraph over custom MCP servers, Temporal durable execution, Stripe metered billing, Next.js console for run replay and audit. - 𝐑𝐞𝐚𝐥-𝐓𝐢𝐦𝐞 𝐕𝐨𝐢𝐜𝐞 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐜𝐞 𝐨𝐧 𝐀𝐖𝐒 + 𝐂𝐥𝐚𝐮𝐝𝐞 - Frontline staff spent more time documenting conversations than having them. Shipped live transcription and summarization that returns a structured note seconds after the call ends. Kinesis + Transcribe streaming into Claude on Bedrock; Lambda, ECS Fargate, S3/KMS, HIPAA-eligible, CDK IaC. - 𝐂𝐥𝐚𝐢𝐦𝐬 & 𝐔𝐧𝐝𝐞𝐫𝐰𝐫𝐢𝐭𝐢𝐧𝐠 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐨𝐧 𝐀𝐳𝐮𝐫𝐞 + 𝐎𝐩𝐞𝐧𝐀𝐈 - Reviewers hand-keyed data from PDFs and email attachments into a multi-day backlog of inconsistent decisions. Automated intake and triage so staff only touch exceptions. - 𝐌𝐮𝐥𝐭𝐢-𝐓𝐞𝐧𝐚𝐧𝐭 𝐒𝐚𝐚𝐒 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 (𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤) - A funded startup ran pilots out of spreadsheets and needed a product customers could buy without a salesperson. 𝐖𝐇𝐀𝐓 𝐈 𝐁𝐔𝐈𝐋𝐃 I build the whole thing. The interface your users touch, the API and data model underneath it, the retrieval and agent layer that makes it intelligent, the cloud infrastructure it runs on, and the evals and dashboards that tell you it's still working next quarter. That means agentic systems and MCP integrations, RAG over messy real-world data, conversational and voice interfaces, document and workflow automation, internal copilots, and the multi-tenant SaaS products they live inside. Healthcare and insurance are where I have the deepest scar tissue, but the engineering is domain-agnostic - I've shipped for fintech, e-commerce, telecom, logistics, legal, and B2B software, and the pattern is always the same: find the workflow that costs the most, and make it disappear. 𝐖𝐇𝐘 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐇𝐈𝐑𝐄 𝐌𝐄 Because I optimize for your outcome, not my hours. I've been the founder staring at runway and the CPTO defending a roadmap, so I'll tell you when a feature isn't worth building, when a cheaper model gets you 95% of the result, and when the honest answer is that AI isn't the right tool for this problem. Clients keep coming back because I treat their business as the product and the software as the means. 𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊 - 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: React, Next.js (App Router, RSC), TypeScript, Angular, Tailwind, shadcn/ui, TanStack Query, Vercel AI SDK, WebSockets/SSE, React Native - 𝐁𝐚𝐜𝐤𝐞𝐧𝐝: Node.js, NestJS, Express, tRPC, Python, FastAPI, Go, REST, GraphQL, gRPC, WebRTC, microservices, Temporal, BullMQ - 𝐆𝐞𝐧𝐀𝐈 & 𝐀𝐠𝐞𝐧𝐭𝐬: OpenAI, Claude, Gemini, Azure OpenAI, Bedrock, MCP, LangChain, LangGraph, RAG, agentic workflows, tool calling, fine-tuning, LLM evals, guardrails, voice AI (Whisper, ElevenLabs, LiveKit) - 𝐃𝐚𝐭𝐚 & 𝐕𝐞𝐜𝐭𝐨𝐫: PostgreSQL, pgvector, Pinecone, Qdrant, Redis, MongoDB, DynamoDB, Cosmos DB, Supabase, Prisma, Snowflake, Databricks - 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬: AWS, Azure, GCP, Docker, Kubernetes, Terraform, GitHub Actions, LangSmith - 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 & 𝐂𝐨𝐦𝐩𝐥𝐢𝐚𝐧𝐜𝐞: Stripe, Twilio, Salesforce, Epic/Oracle Health, HL7 v2, FHIR R4, OAuth 2.0/OIDC, SSO/SAML, HIPAA, SOC 2, GDPR If you're navigating GenAI - as a founder, executive, or enterprise team - let's talk.

⭐ Expert-Vetted Top 1% AI Consultant on Upwork ⭐ Experienced AI Consultant with 10+ years working in top-tier research with MIT professors & founding 2 VC-backed startups (over $1M of entrepreneurial insights and lessons learned). I've helped 50+ businesses build automations and scale through AI: sfailabs.ai. I've helped 10+ founders build their AI products. Recent business case studies: ⭐ AI transformation for a $2B private equity firm for their sales & marketing pipeline. ⭐ Helped a healthcare team cut admin processes by 40% through LLM-driven automation ⭐ Streamlined reporting with AI to save 20 hours per week for a construction firm. ⭐ Launched B2B/B2C AI APPs with 100+ active users. My services: 🎨 AI Architecture Design 🚀 AI Development (Agents, Platforms, Products) 🔍 AI Commercialization Advising 🤖 AI Strategy for Market Trends and Insights 🧠 CTO | Tech advisor | Consultant – I can join your team on a partial basis How I can help: 💼 Identify your best AI opportunities in your business or market 🧠 Design and build your custom AI (agent, platform, product) 💸 Launch your AI to maximize profit & impact First-author on AI conference papers (ICRA, AAAI, ICCM) and US Patent holder #405505-561P01US. I obtained a M.S. of Computer Science from Brown University, later awarded a Research Fellowship by the National University of Singapore. Founder of VC-backed AI companies with diverse industry applications. Sharing Knowledge in: ✅ AI Consulting Generative AI Consulting, AI Automation Consulting, AI Opportunity Assessment, Workflow Audit, Use-Case Prioritization, ROI Modeling, Build-vs-Buy Analysis, Vendor Selection, AI Governance, Production Readiness Assessment, and Fractional AI CTO Services. ✅ AI Workflow Automation AI Workflow Automation, Business Process Automation, n8n, Make, Zapier, CRM Automation, Email Automation, Approval Workflows, Document Routing, Data Synchronization, Event-Driven Workflows, and Human-in-the-Loop Automation. ✅ AI Agents & Copilots AI Agent Development, Agentic Workflows, AI Copilots, Internal AI Assistants, Multi-Agent Systems, Agent Memory, Agent Orchestration, Tool Calling, Function Calling, Structured Outputs, Model Context Protocol (MCP), LangGraph, CrewAI, and AutoGen. ✅ RAG & Enterprise Knowledge Systems Retrieval-Augmented Generation (RAG), Agentic RAG, Enterprise Knowledge Bases, Semantic Search, Hybrid Search, Vector Databases, Permission-Aware Retrieval, Source Attribution, Document Chunking, Embedding Pipelines, and Retrieval Evaluation. ✅ Document Intelligence Intelligent Document Processing, PDF Data Extraction, Contract Analysis, Invoice Processing, Form Processing, Document Classification, Table Extraction, Metadata Extraction, Document Summarization, Validation Workflows, and Exception Handling. ✅ LLM Application Development OpenAI API, Anthropic Claude, Google Gemini, Llama, Mistral, LangChain, LlamaIndex, Prompt Engineering, Structured Data Extraction, Multimodal AI, Fine-Tuning, LoRA, QLoRA, and Hugging Face. ✅ Enterprise Integrations Salesforce Automation, HubSpot Automation, Slack Integrations, Microsoft Teams Integrations, Google Workspace Automation, Notion Integrations, REST APIs, Webhooks, OAuth, SQL, NoSQL, ETL Pipelines, and Data Connectors. ✅ AI Evaluation & Guardrails LLM Evaluation, Prompt Testing, Hallucination Detection, Retrieval Testing, Output Validation, AI Guardrails, Model Monitoring, Human Review Workflows, Audit Logging, Access Controls, and Production Observability. ✅ Production AI Infrastructure AWS, Microsoft Azure, Google Cloud Platform, Docker, Terraform, CI/CD, GitHub Actions, FastAPI, Microservices, Model Serving, Scalable Inference, Secrets Management, and Cloud Deployment.

Full-Stack Developer | AI Engineer | Python | Next.js | Node.js | TypeScript | PostgreSQL 10+ years building production software at Tesla, Oculus VR, and two AI startups I founded in San Francisco. Currently CTO of Mevlo — an AI-powered real estate marketplace. I built the full platform from scratch: React/Next.js frontend, Node.js APIs, PostgreSQL, and three AI engines using Claude SDK and OpenAI with streaming, tool use, and structured output. ARV analysis that took 15-30 min now runs in 5 seconds at ±4% accuracy. Previously built Melo, an AI video podcast platform with real-time transcript pipelines, semantic search, and recommendation engines using Python, Claude, and Pinecone. What I do: Full-stack development (Next.js, React, Node.js, Fastify, TypeScript, Python, FastAPI) PostgreSQL, Prisma, MongoDB, Supabase, Redis AI/ML — model training, fine-tuning, prompt engineering, RAG pipelines, multi-turn agents LLMs — Claude SDK, OpenAI, LangChain, Ollama Vector search — Pinecone, FAISS, embeddings, hybrid search Speech/Audio AI — Whisper, Deepgram, ElevenLabs Scraping & data pipelines — Cheerio, Python, API integrations AWS (EC2, Lambda, S3, RDS), Vercel, Docker, CI/CD Auth — JWT, bcrypt, Clerk, OAuth Testing — Vitest, Playwright, Jest What you get: A founder who builds and ships. I don't need hand-holding. I scope fast, communicate early, and write clean production code. I've trained models, designed databases, built APIs, and shipped consumer products — all in the same week. Open to ongoing contracts, fractional work, and AI engineering engagements.

Need a senior architect who can build it, scale it, and make it beautiful, with AI woven through the whole thing instead of bolted on the side? That's what I do. I'm a principal full-stack architect and polyglot engineer, 15+ years taking products from idea to production across fintech, health-tech, cybersecurity, blockchain, defense, and AI. 💡 Work clients know me for: - A $500M real-time fintech trading platform (web + mobile) - A $100M real estate CRM built from scratch; the firm was acquired by Cushman & Wakefield - Solana indexing infrastructure handling $1–3T in daily transaction volume - A live algorithmic quant trading platform running real money on a tier-1 broker - Federated-learning threat detection for an AI cybersecurity platform - Solo-replaced a 10-developer offshore team on a national assistive-communication app 🤖 AI / LLM, where much of my recent work lives: - Production LLM systems with structured outputs, guardrails, and audit logging in regulated fintech - Multi-model pipelines (Claude, Whisper, Gemini, OpenAI, ElevenLabs) chosen deliberately for cost, latency, and accuracy - MCP and agentic tooling, with official Anthropic certifications behind it - A production AI agent and grounded voice-and-chat assistant on frontier models (Gemini, Claude, GPT), with real tool-calling into live equipment data, RAG over the actual manuals, a scorer, and an adversarial grounding eval harness that gates every deploy so it cannot hallucinate to users - Architecting specialized-model training on proprietary field data: fine-tuning small open models (Llama/Qwen) for domain tasks like fault diagnosis and failure prediction, with labeled eval sets and an eval-gated deploy pipeline - The discipline that keeps AI output reliable and affordable in production, not just impressive in a demo 🛠 Stack: - Full-stack: TypeScript/React/Next.js, Node/Deno, Python, Go, Rust, Ruby/Rails, PHP/Laravel - Mobile: Flutter, React Native, Swift, Kotlin - APIs & data: GraphQL, REST, PostgreSQL, MySQL, MongoDB, Redis - Cloud & infra: AWS, GCP, Supabase, Docker/K8s, CI/CD - AI: Claude, Gemini, GPT, MCP, multi-model orchestration - Security: PCI DSS remediation, federated learning, RLS/RBAC, signed webhooks 🎯 Clients hire me when: - They're launching something ambitious and want it architected right the first time - Their legacy codebase is a mess and they need someone who can inherit it and stabilize it fast - They want AI built into the product correctly, by someone who's shipped it in production - They want someone who thinks like an engineer, a strategist, and a founder I also direct and design large-scale sculptures and immersive environments. Fluent in product vision, UX/UI, and creative direction, with experience in Rhino3D, Unity, CAD, TouchDesigner, and Adobe. Request my design portfolio directly if you're curious. 📩 Message me and tell me what you're building. I'll tell you how I'd make it better.

𝐋𝐨𝐨𝐤𝐢𝐧𝐠 𝐟𝐨𝐫 𝐚 𝐌𝐄𝐑𝐍 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐰𝐡𝐨 𝐮𝐧𝐝𝐞𝐫𝐬𝐭𝐚𝐧𝐝𝐬 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐝𝐮𝐜𝐭, 𝐧𝐨𝐭 𝐣𝐮𝐬𝐭 𝐲𝐨𝐮𝐫 𝐜𝐨𝐝𝐞? You’re in the right place. Hi, I’m 𝐅𝐚𝐫𝐡𝐨𝐬𝐡, a 𝐌𝐄𝐑𝐍 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐚𝐧𝐝 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 specializing in 𝐌𝐨𝐧𝐠𝐨𝐃𝐁, 𝐄𝐱𝐩𝐫𝐞𝐬𝐬.𝐣𝐬, 𝐑𝐞𝐚𝐜𝐭.𝐣𝐬, 𝐚𝐧𝐝 𝐍𝐨𝐝𝐞.𝐣𝐬 to build reliable, modern, and scalable web applications. I work with startups, agencies, and businesses to turn ideas into 𝐫𝐞𝐚𝐥, 𝐰𝐨𝐫𝐤𝐢𝐧𝐠 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬. I handle both 𝐟𝐫𝐨𝐧𝐭-𝐞𝐧𝐝 𝐚𝐧𝐝 𝐛𝐚𝐜𝐤-𝐞𝐧𝐝 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, so everything in your application works smoothly together - from the user interface to the database. I focus on 𝐜𝐥𝐞𝐚𝐧 𝐜𝐨𝐝𝐞, 𝐜𝐥𝐞𝐚𝐫 𝐜𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧, 𝐚𝐧𝐝 𝐥𝐨𝐧𝐠-𝐭𝐞𝐫𝐦 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬, not shortcuts. 𝐖𝐡𝐚𝐭 𝐈 𝐂𝐚𝐧 𝐃𝐨 𝐟𝐨𝐫 𝐘𝐨𝐮 → Build complete 𝐌𝐄𝐑𝐍 𝐬𝐭𝐚𝐜𝐤 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 from scratch → Create clean, responsive front-end UI using 𝐑𝐞𝐚𝐜𝐭.𝐣𝐬, 𝐍𝐞𝐱𝐭.𝐣𝐬, 𝐓𝐚𝐢𝐥𝐰𝐢𝐧𝐝 𝐂𝐒𝐒 → Develop secure and scalable back-end systems using 𝐍𝐨𝐝𝐞.𝐣𝐬, 𝐄𝐱𝐩𝐫𝐞𝐬𝐬.𝐣𝐬 → Design and manage databases using 𝐌𝐨𝐧𝐠𝐨𝐃𝐁, 𝐌𝐲𝐒𝐐𝐋, 𝐏𝐨𝐬𝐭𝐠𝐫𝐞𝐒𝐐𝐋 → Build and integrate 𝐑𝐄𝐒𝐓𝐟𝐮𝐥 𝐀𝐏𝐈𝐬 and third-party services → Implement secure authentication using JWT, OAuth, and role-based access control → Fix bugs, improve performance, and refactor existing code → Deploy and manage applications using 𝐀𝐖𝐒, 𝐃𝐨𝐜𝐤𝐞𝐫, 𝐚𝐧𝐝 𝐂𝐈/𝐂𝐃 𝐩𝐢𝐩𝐞𝐥𝐢𝐧𝐞𝐬 Whether it’s a 𝐒𝐚𝐚𝐒 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦, 𝐚𝐝𝐦𝐢𝐧 𝐝𝐚𝐬𝐡𝐛𝐨𝐚𝐫𝐝, 𝐞-𝐜𝐨𝐦𝐦𝐞𝐫𝐜𝐞 𝐰𝐞𝐛𝐬𝐢𝐭𝐞, or 𝐜𝐮𝐬𝐭𝐨𝐦 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧, I build solutions that are stable, easy to maintain, and ready to grow. 𝐌𝐲 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐒𝐤𝐢𝐥𝐥𝐬 𝐅𝐫𝐨𝐧𝐭-𝐄𝐧𝐝: → HTML5 | CSS3 | Tailwind CSS | Bootstrap | JavaScript | TypeScript | React.js | Next.js 𝐁𝐚𝐜𝐤-𝐄𝐧𝐝: → Node.js | Express.js | RESTful API Development | API Integration 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: → MongoDB | Mongoose | MySQL | PostgreSQL 𝐓𝐨𝐨𝐥𝐬 & 𝐂𝐥𝐨𝐮𝐝: → AWS | Docker | CI/CD | Git | GitHub | Vercel 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞 → Strong expertise in MERN Stack and Full Stack Web Development → Clean, readable, and maintainable code → Clear communication and regular updates → On-time delivery with attention to detail → Comfortable working independently or with teams → Long-term mindset, not one-time tasks I take responsibility for my work and treat every project as if it were my own. 𝐇𝐨𝐰 𝐈 𝐖𝐨𝐫𝐤 I start by understanding your requirements clearly. Then I plan the best approach, build step by step, keep you updated, and deliver a solution you can confidently use and scale. No confusion. No unnecessary complexity. Just solid development. 𝐋𝐞𝐭’𝐬 𝐖𝐨𝐫𝐤 𝐓𝐨𝐠𝐞𝐭𝐡𝐞𝐫 If you’re looking for a 𝐌𝐄𝐑𝐍 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 / 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 who delivers quality work and communicates clearly, I’d be happy to help. 𝐒𝐞𝐧𝐝 𝐦𝐞 𝐚 𝐦𝐞𝐬𝐬𝐚𝐠𝐞 𝐚𝐧𝐝 𝐥𝐞𝐭’𝐬 𝐝𝐢𝐬𝐜𝐮𝐬𝐬 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭. ✅ 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬: MERN Stack Developer | Full Stack Developer | Full-Stack Web Developer | React.js Developer | Node.js Developer | Next.js Developer | JavaScript Developer | TypeScript Developer | MongoDB Developer | Express.js Developer | Web Application Developer | REST API Developer | Back-End Developer | Front-End Developer | SaaS Application Developer | Custom Web Application Development | Admin Dashboard Developer | E-commerce Website Developer | Tailwind CSS Developer | Responsive Web Design | Server-Side Development | Database Design & Management | Performance Optimization | Build MERN stack web applications | Full-stack React and Node.js development | Secure backend development using Node.js | MongoDB schema design and optimization | RESTful API development with Express.js | Next.js SSR / SSG website development | SaaS platform development using MERN stack | Deploy web apps on AWS and Docker | Convert Figma designs to React.js | Full-stack web app development from scratch | Scalable web application architecture | High-performance web applications | Clean code & best practices | Microservices architecture | CI/CD pipeline setup | Cloud deployment (AWS, Vercel, Render) | Authentication & Authorization (JWT, OAuth) | Secure API development | Modern web application architecture | MongoDB | MySQL | PostgreSQL | Docker | Git | GitHub | GitLab | Redux | Context API | RESTful APIs | GraphQL | TypeScript Development | SaaS Dashboard Development | Admin Panel Development | CRM System Development | E-commerce MERN Website | Booking / Reservation System | Marketplace Web Application | Real-Time Web Application | Business Automation