⭐ Top Rated Plus | 100% Job Success Hey! I'm Dubravko, a Solutions Architect with 7+ years of experience and the founder of Altitude IT, a co-located team of engineers in Serbia. We're not a faceless outsource shop. I'm hands-on in every project, managing my team and staying close to the work so nothing slips through the cracks. We also work alongside a partner design agency in our office, so we can cover the full product lifecycle from UI to infrastructure. We build systems that need to stay up when traffic spikes and complexity grows. A few examples of what that looks like in practice: -Built an API-driven platform that integrates with 20+ major airlines, automating rebookings, refunds and passenger data updates, used both as a standalone booking app and as a unified API that other businesses plug into their own systems. -Developed a real-time sports data aggregation platform handling live scores, schedules and news across soccer, basketball, baseball, NFL and Formula 1, restructured the data layer and optimized MongoDB to keep things fast under heavy load. -Created a FinTech commission management system that automated payment calculations, receipt matching, invoice generation and role-based access, cutting manual processing time and errors significantly for the client. -Shipped cross-platform mobile apps in e-commerce and education (React Native + Golang), including a grocery app with barcode scanning and payments, and a student discount app with QR codes and interactive maps. -Deployed Prometheus + Grafana monitoring on AWS EKS with Kubernetes and Helm for proactive infrastructure observability. Our stack: Backend: Golang, .NET, Node.js, Python | Frontend: React, Next.js, Angular, React Native | Infrastructure: AWS, DigitalOcean, Kubernetes | Databases: PostgreSQL, MongoDB, Redis, MySQL | Tooling: Prometheus, Grafana, Power BI How we work: We take on and prefer long-term engagements, multi-year relationships, not one-off handoffs. Communication is direct, clear and on time. I plan and architect every project before a line of code is written, and we iterate closely with clients throughout. If something breaks at 2am, we're the ones fixing it. Ready to talk? Send me a message and let's figure out if we're a good fit.

𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 🥇 𝟳+ 𝗬𝗲𝗮𝗿𝘀 𝗼𝗳 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 🕒 𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 𝗡𝗼𝘄 🚀 𝐑𝐞𝐚𝐜𝐭.𝐣𝐬 | 𝐀𝐧𝐠𝐮𝐥𝐚𝐫 | 𝐍𝐨𝐝𝐞.𝐣𝐬 | 𝐍𝐞𝐱𝐭.𝐣𝐬 | 𝐑𝐞𝐝𝐮𝐱 | 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭 | 𝐌𝐄𝐑𝐍 𝐒𝐭𝐚𝐜𝐤 | 𝐑𝐄𝐒𝐓 𝐀𝐏𝐈 | 𝐆𝐫𝐚𝐩𝐡𝐐𝐋 | 𝐌𝐨𝐧𝐠𝐨𝐃𝐁 | 𝐏𝐨𝐬𝐭𝐠𝐫𝐞𝐒𝐐𝐋 | 𝐌𝐲𝐒𝐐𝐋 | 𝐑𝐞𝐝𝐢𝐬 | 𝐅𝐢𝐫𝐞𝐛𝐚𝐬𝐞 | 𝐀𝐖𝐒 | 𝐀𝐳𝐮𝐫𝐞 | 𝐃𝐨𝐜𝐤𝐞𝐫 | 𝐊𝐮𝐛𝐞𝐫𝐧𝐞𝐭𝐞𝐬 | 𝐂𝐈/𝐂𝐃| 𝐓𝐚𝐢𝐥𝐰𝐢𝐧𝐝 𝐂𝐒𝐒 | 𝐌𝐚𝐭𝐞𝐫𝐢𝐚𝐥 𝐔𝐈 | 𝐁𝐨𝐨𝐭𝐬𝐭𝐫𝐚𝐩 | 𝐒𝐚𝐚𝐒 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐂𝐑𝐌 | 𝐄𝐑𝐏 I specialize in building modern frontend applications using 𝗥𝗲𝗮𝗰𝘁.𝗷𝘀, 𝗔𝗻𝗴𝘂𝗹𝗮𝗿, 𝗡𝗲𝘅𝘁.𝗷𝘀, 𝗥𝗲𝗱𝘂𝘅, and 𝗧𝘆𝗽𝗲𝗦𝗰𝗿𝗶𝗽𝘁 while developing scalable backend systems with 𝗡𝗼𝗱𝗲.𝗷𝘀, 𝗘𝘅𝗽𝗿𝗲𝘀𝘀.𝗷𝘀, REST APIs, GraphQL, and cloud-native architectures. Alongside full stack and blockchain development, I build AI-powered automation systems, AI SaaS products, AI agents, workflow automation tools, and intelligent applications using modern LLM technologies and automation frameworks. 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗜 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 🏥 Healthcare & Medical Platforms 💰 Fintech & Banking Solutions 🛒 E-commerce & Marketplace Platforms 🏢 SaaS & Enterprise Applications 🤖 AI Automation & Productivity Systems 📦 CRM, ERP & Inventory Management Software 🎮 Blockchain, Web3 & Crypto Platforms 📊 Data Analytics & Dashboard Systems 🏡 Real Estate & Property Platforms 🎓 EdTech & Learning Management Systems 🚚 Logistics & On-Demand Applications 𝗪𝗵𝗮𝘁 𝗜 𝗖𝗮𝗻 𝗕𝘂𝗶𝗹𝗱 𝗳𝗼𝗿 𝗬𝗼𝘂 ✔ Full Stack SaaS Applications ✔ AI Automation & AI-Powered Platforms ✔ Blockchain dApps & Smart Contract Systems ✔ CRM, ERP & Inventory Management Platforms ✔ Enterprise Web Applications & Dashboards ✔ REST API & GraphQL API Integrations ✔ Real-Time Applications & Analytics Systems ✔ Progressive Web Apps (PWA) ✔ Cloud-Based Microservices Architectures ✔ Startup MVP Development & Scaling Solutions 𝗠𝘆 𝗖𝗼𝗿𝗲 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸 🔥 Frontend Development React.js, Angular, Next.js, Vue.js, React Native, TypeScript, JavaScript, Redux, Zustand, Tailwind CSS, Material UI, Bootstrap, Framer Motion, PWA, Responsive UI, Accessibility (WCAG) 🔥 Backend Development Node.js, Express.js, NestJS, Python, Django, FastAPI, REST APIs, GraphQL, WebSockets, Microservices Architecture, Serverless Functions, JWT Authentication, OAuth2 🔥 Database & Data Management MongoDB, PostgreSQL, MySQL, Redis, Firebase, Prisma, Sequelize, TypeORM, Elasticsearch, Database Optimization, Data Modeling 🔥 Cloud & DevOps AWS, Azure, Docker, Kubernetes, CI/CD Pipelines, GitHub Actions, GitLab CI, Linux Server Management, Nginx, Terraform, Monitoring (Prometheus, Grafana) 🔥 Testing & Quality Assurance Jest, Mocha, Cypress, Unit Testing, Integration Testing, API Testing (Postman, Supertest), TDD (Test Driven Development) 🔥 System Design & Architecture Scalable SaaS Architecture, Microservices Design, High Performance Systems, API Design, Security Best Practices, Performance Optimization, Agile Development 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗛𝗶𝗿𝗲 𝗠𝗲 ✅ Clean, scalable, maintainable code ✅ Strong communication & transparent workflow ✅ Fast delivery with high-quality standards ✅ Startup-friendly & business-focused approach ✅ Long-term support & optimization ✅ Performance, scalability & security focused From idea validation and MVP development to enterprise-grade deployment, I can handle the complete product lifecycle with reliable execution and modern development practices. If you're looking for a dependable Full Stack Developer who understands modern web technologies, AI automation, SaaS architecture, and Blockchain/Web3 ecosystems, let’s connect and build something impactful together. Thank you for visiting my profile! #FullStackDeveloper #ReactDeveloper #AngularDeveloper #NodeJS #NextJS #Redux #TypeScript #MERNStack #WebDevelopment #FrontendDeveloper #BackendDeveloper #SaaSDevelopment #CRMDevelopment #ERPSystems #APIIntegration #GraphQL #MongoDB #PostgreSQL #AWS #Docker #Kubernetes #EnterpriseApplications #DashboardDevelopment #CloudApplications

🏆 Top Rated Plus · ✅ 50+ jobs completed · ⏳ 15+ years shipping full stack products Most "full stack" developers own the frontend and hand off the backend to someone else. I own both - React/Next.js on the frontend, .NET Core or Node.js on the backend, deployed and production-ready end to end. That means fewer handoffs, faster iteration, and a system that's architected consistently from database to UI instead of stitched together. ──────────────────────────────── ROLES I TAKE ON (15+ YEARS EXPERIENCE) ──────────────────────────────── ✔ Full Stack Developer / Full Stack Engineer ✔ React Developer / React.js Developer / Next.js Developer ✔ Frontend Developer - component architecture, state management, performance ✔ .NET Developer / .NET Core Developer / C# Developer (backend & full stack) ✔ SaaS Developer / Multi-Tenant SaaS Architect ✔ Angular Developer (8–20) for teams standardized on Angular ──────────────────────────────── 🛠️ CORE TECH STACK ──────────────────────────────── Frontend: React.js, Next.js, Angular, TypeScript, JavaScript, Tailwind CSS Backend: .NET Core, ASP.NET Core, C#, Node.js, Web API, Entity Framework, Microservices, REST APIs Cloud & DevOps: Microsoft Azure, AWS, Docker, CI/CD Database: SQL Server, PostgreSQL, MongoDB Also comfortable with: Python (FastAPI, Django, Flask) used when a project calls for it ──────────────────────────────── 🚀 PROJECTS I'VE DELIVERED ──────────────────────────────── 🔹 NinjaDAM - Multi-tenant SaaS, AWS S3/CloudFront, subscription billing. Solved schema-per-tenant isolation so tenant data never crosses. 🔹 Xenophon - Legal transcription platform, real-time AI (Whisper, Google STT). Solved speaker ID accuracy for court-admissible transcripts. 🔹 AceMMI - AI coaching platform, OpenAI-powered scoring across 8 competencies. Rebuilt the async queue after serverless timeouts broke under load. 🔹 Rose POS - Restaurant POS system, React + Electron + FastAPI. Built a print queue with retries so a jammed printer never blocks an order. 🔹 FLX Networks - B2B wealth management platform, React + Node + AWS/Azure. Unified fragmented multi-party workflows into a single coherent system. 🔹 Vast Advisor - Compliance SaaS for investment advisors, Blazor + .NET. One shared data layer powering independently operating client dashboards. 🔹 LOKR - IoT smart parcel locker SaaS, FastAPI + React. Cut failed deliveries 80% by fixing real-time state sync between hardware and software. 🔹 Montage - Software licensing & digital commerce platform, ASP.NET + SQL Server. Automated the full license lifecycle with zero payment calculation errors. 🔹 Raprod - B2B marketplace with a real-time bidding engine. Held pricing accuracy under concurrent buyer/supplier load. 🔹 Ontrack Careers - Rescued a broken AI career platform. Fixed auth (OTP, OAuth, subscription bypass) without a full rewrite. 🔹 Crew Planner - Maritime fleet & crew management, Angular + .NET. Built certification-expiry logic that correctly cascades across assignments. 🔹 Intervia - AI analytics dashboard for university career centers. Replaced manual spreadsheets with role-filtered predictive reporting. ──────────────────────────────── 🏆 WHY CLIENTS WORK WITH ME ──────────────────────────────── ✅ Top Rated Plus - 50+ jobs completed on Upwork ✅ 15+ years shipping production frontend + backend systems ✅ Comfortable owning a project end-to-end or slotting into an existing team ✅ Enterprise client feedback: "demonstrated excellent technical knowledge and professionalism. Delivered high-quality work on time and was reliable throughout" ✅ Several contracts have run 6+ months, clients keep me on past the first milestone ✅ Clear communication, honest scoping, no surprises If you need a Full Stack Developer who can own a React frontend and a real backend behind it, send me your project and I'll respond within a few hours. Full Stack Developer | Full Stack Engineer | React Developer | React.js Developer | Next.js Developer | NextJS Developer | Node.js Developer | NodeJS Developer | TypeScript Developer | JavaScript Developer | Frontend Developer | Backend Developer | MERN Stack Developer | Python Developer | Django Developer | .NET Developer | ASP.NET Developer | C# Developer | SaaS Developer | Product Engineer | Technical Lead | SaaS Platform | SaaS Development | MVP Development | Web Application Development | Web App Developer | Custom Software Development | API Development | API Integration | REST API | GraphQL | Microservices | Multi-Tenant Architecture | Admin Dashboard | Scalable Architecture | PostgreSQL | MongoDB | SQL Server | Supabase | Prisma | Database Design | AWS | Azure | Vercel | Cloud Deployment | CI/CD | Authentication | OAuth | JWT | Role-Based Access | Stripe Integration | Payment Integration | Subscription Management | AI Integration | OpenAI API | Claude API | LLM Integration | RAG | AI Automation | Workflow Automation | Cursor | Claude Code | Replit | Lovable | AI-Assisted Development

I build and stabilize AI automation, agents, and full stack SaaS products that need to work reliably in production, not just in demos. I’ve shipped and scaled systems for founders from Y Combinator, Founders Factory, FutureLabs, and Republic of Work. Founders I’ve built with have gone on to raise €2M+, and my AWS/serverless work ranks in the top 0.2% for DevOps. A few results: ⚡ Multi-tenant SaaS with 28% faster integrations ⚡ Serverless system running under 200ms latency at 10K+ users ⚡ AI RAG system improving support efficiency by 45% ⚡ Next.js migration reducing hosting costs by 15% ⚡ SaaS MVPs shipped to production, with founders raising after launch A lot of products today get built quickly with Cursor, Lovable, Bolt, Claude Code, or an early freelance team. Then real users arrive. That’s when the problems show up: messy code, fragile backends, AI features that worked in the demo but fail in production, scaling bottlenecks, unreliable automations, and rising AWS costs. I help turn that into a production-ready system with clean architecture, a solid backend, reliable AI behavior, and room to scale. I also build new products properly from idea to MVP to production. What I can help with: * AI agents, chatbots, and AI voice agents * Workflow automation and business process automation using n8n, Make, Zapier, and APIs * Production RAG, LLM, and knowledge-based systems * Full-stack SaaS development with Next.js, React, Node.js, TypeScript, JavaScript, and Python * Backend systems, REST APIs, third-party integrations, and multi-tenant architecture * PostgreSQL, Supabase, Stripe, AWS, serverless, performance, and cost optimization * Stabilizing fragile or AI-built MVPs before they become technical debt How I work: We can start small. Send me your app URL, repo, or brief with a short note on the problem. I’ll review the likely bottlenecks, scaling risks, reliability issues, and what I would fix first before you commit to anything bigger. From there, I can take technical ownership of the build: architecture, backend, integrations, AI systems, delivery, and the parts that usually stall. I work best with: * Funded startups starting with or moving beyond MVP * SaaS teams hitting scaling, reliability, or cost issues * Founders who want a senior engineer to take ownership, not just ship tickets I’m probably not the right fit if you’re looking for the cheapest possible build. I’m a fit when the product matters, users depend on it, and it has to work. Tech I work with often: Python, JavaScript, TypeScript, React, Next.js, Node.js, AWS, Supabase, PostgreSQL, Stripe, serverless, OpenAI, Claude, Gemini, RAG, LangChain, AI agents, n8n, Make, Zapier, automation, and APIs. If your product was built fast and now needs to work properly, or you want it built right from the start, send me the repo, app, or brief, and I’ll tell you what I’d fix first.

🟢 𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 𝗡𝗼𝘄 | 🏆 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 (𝗧𝗼𝗽 𝟯% 𝗧𝗮𝗹𝗲𝗻𝘁) | 💫 𝟴+ 𝗬𝗲𝗮𝗿𝘀 𝗼𝗳 𝗣𝗿𝗼𝘃𝗲𝗻 𝗥𝗲𝘀𝘂𝗹𝘁𝘀 ⭐ Ali is the best developer I’ve ever worked with. The quality of his work and his experience in developing are insane. On top of all that, his pricing is very competitive for the value you are getting. Hidden GEM of Upwork.” Whether you need a custom website, API integration, or a complete web application, I have the skills to bring your vision to life. From backend to frontend, my focus is on building systems that are fast, scalable, and user-friendly. I’m a full-stack developer with 7+ years of experience, I specialize in creating high-performance solutions. 𝗪𝗵𝗮𝘁 𝗜 𝗮𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁 & 𝗯𝘂𝗶𝗹𝗱: → Multi-tenant SaaS platforms in Laravel & Node.js — clean, scalable, built to last → Microservices architecture & monolith systems — design, refactor, or migrate between both → DevOps pipelines — CI/CD, Docker, AWS (EC2, RDS, S3, ElastiCache), zero-downtime deployments → AI-driven automation tools & workflows (OpenAI, Anthropic, RAG pipelines) → REST APIs & Webhooks built for reliability and third-party integrations (Stripe, Zapier, Twilio) → Full-stack with React, Next.js & Vue frontends — Tailwind CSS, fast, responsive → PostgreSQL & MySQL — complex schemas, performance tuning, multi-tenant data isolation → Scalable backend systems — queues, caching, event-driven architecture → Security-first — auth, permissions, and data protection designed in from day one → Rescue projects — I regularly rebuild what others architected poorly 𝗪𝗵𝗼 𝗜 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵: ✔ SaaS founders who need an architect, not someone to assign tickets to ✔ Startups moving fast who can't afford to redo the foundation later ✔ CTOs who want a senior partner with zero hand-holding ✔ Teams migrating from monoliths into microservices — or the other way around ✔ Agencies needing a reliable Laravel & Node.js expert at scale 𝗛𝗼𝘄 𝗜 𝘄𝗼𝗿𝗸: I ask the right questions before writing a single line of code. I think through your system's future, how it grows, where it breaks, how to prevent both. Many clients have stayed with me for 2–4 years because I treat their product like it's my own. Available for full builds, ongoing retainers, and rescue projects. 📩 Send me a message. I respond within 30 minutes.

A Travel startup 𝘀𝗮𝘄 𝗮 𝟲𝟬% 𝗿𝗲𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗶𝗻 𝗱𝗲𝘃 𝗰𝘆𝗰𝗹𝗲 𝘁𝗶𝗺𝗲 after launching their MVP fully built in Flutter, FlutterFlow + Node.js + GPT-4 + n8n agent, integrated with real-time location, chat, and payment features. Flutter + Agentic AI specialist. I help startups go from idea to AI-powered product 𝙛𝙖𝙨𝙩. Whether it’s building full-stack SaaS platforms, mobile apps with integrated LLMs, or deploying agentic AI that acts (not just chats), 𝗜 𝗱𝗲𝗹𝗶𝘃𝗲𝗿 𝗲𝗻𝗱‑𝘁𝗼‑𝗲𝗻𝗱 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 𝗰𝗼𝗱𝗲𝗱, 𝘁𝗲𝘀𝘁𝗲𝗱, 𝗮𝗻𝗱 𝗹𝗶𝘃𝗲. Hi, I’m 𝗞𝗶𝗿𝘁𝗶𝗸𝘂𝗺𝗮𝗿, a Full Stack & Agentic AI Developer with core expertise in: ▪️Mobile-Ready AI – Flutter, React Native with OpenAI and Gemini ▪️React, Node.js, Next.js, Express – frontend/backend mastery ▪️AWS DevOps & Cloud – Lambda, DynamoDB, S3, EC2, CloudFormation, CI/CD A few results I’ve delivered: ✅ 𝟳𝟬% 𝗳𝗮𝘀𝘁𝗲𝗿 𝗺𝗼𝗯𝗶𝗹𝗲 𝗮𝗽𝗽 𝗗𝗲𝗩 with Flutter & Firebase/Supabase ✅ 𝟵𝟬% 𝗺𝗮𝗻𝘂𝗮𝗹 𝗲𝗳𝗳𝗼𝗿𝘁 𝗲𝗹𝗶𝗺𝗶𝗻𝗮𝘁𝗲𝗱 with AI-OCR invoice automation ✅ 𝟲𝟬% 𝗿𝗲𝗱𝘂𝗰𝘁𝗶𝗼𝗻 in AWS infra costs via optimized serverless stack ✅ 𝟰𝟬+ 𝗵𝗿𝘀/𝘄𝗲𝗲𝗸 saved via agentic voice receptionist for local clinic Use-Cases I have Built: ▪️ 𝗖𝘂𝘀𝘁𝗼𝗺 𝗔𝗜 𝗮𝗴𝗲𝗻𝘁𝘀 that automate 70% of business logic ▪️ 𝗣𝗮𝗴𝗲‑𝗹𝗲𝘃𝗲𝗹 𝘁𝘂𝘁𝗼𝗿 𝗯𝗼𝘁𝘀 for edtech with curriculum alignment ▪️ 𝗥𝗲𝗮𝗹-𝘁𝗶𝗺𝗲 𝗹𝗼𝗰𝗮𝘁𝗶𝗼𝗻 + 𝗩𝗼𝗶𝗰𝗲 𝗕𝗼𝘁 𝗳𝗼𝗿 service-based startups ▪️ 𝗘‑𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝗮𝗱𝘃𝗶𝘀𝗼𝗿 𝗯𝗼𝘁s that increase conversions by 3X ▪️ 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗮𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝘄𝗶𝘁𝗵 n8n + OpenAI + Google Sheets + Airtable Tools & Frameworks I Master: - Frontend: React, Next.js, Angular, Chakra, AntD, Bootstrap - Backend: Node.js, Express, Firebase, GraphQL - Mobile: Flutter, FlutterFlow, React Native, Swift, Kotlin - Databases: PostgreSQL, MySQL, MongoDB, DynamoDB, Redis Clients hire me when: 🔹 Their MVP needs to launch within 2–4 weeks 🔹 They need a Flutter, FlutterFlow dev who understands real backend logic 🔹 Their app requires Agentic AI with memory, tools, and decision-making 🔹 They’re stuck stitching cloud, database, and LLMs, I simplify it. 🔹 Their current devs do not "get" the AI part, I build it right the first time. 𝗦𝗲𝗲 𝘄𝗵𝗮𝘁 𝟯𝗫 𝗰𝗼𝗻𝘃𝗲𝗿𝘀𝗶𝗼𝗻𝘀 on your mobile app 𝗮𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝗳𝗲𝗲𝗹𝘀 𝗹𝗶𝗸𝗲, 𝗹𝗲𝘁'𝘀 𝗯𝘂𝗶𝗹𝗱 𝘆𝗼𝘂𝗿 𝘂𝘀𝗲 𝗰𝗮𝘀𝗲. 𝗗𝗠 𝗺𝗲 𝗻𝗼𝘄.

AI Automation Engineer specializing in AI agents, workflow automation, and production-grade AI applications. I help startups, SaaS companies, and growing businesses build intelligent systems that automate operations, improve efficiency, and scale faster using OpenAI, LangChain, n8n, FastAPI, and modern cloud infrastructure. Over the past 8+ years, I’ve worked across full-stack development, backend architecture, SaaS platforms, and business automation systems. In recent years, my focus has been on building AI-powered products and automation workflows that solve real operational problems, not just prototypes or demos. What I built: • AI Agents & Multi-Agent Systems • OpenAI & LLM Integrations • AI Chatbots & Voice AI Agents • Workflow Automation (n8n, Make, Zapier) • RAG Pipelines & Knowledge Systems • CRM & Business Process Automation • AI SaaS Platforms • Scalable Backend APIs & Integrations Tech Stack: • OpenAI, Claude, Hugging Face • LangChain, LlamaIndex, CrewAI • Python, FastAPI, Node.js • PostgreSQL, MongoDB, Redis • Pinecone, Qdrant, ChromaDB, FAISS • AWS, Docker, CI/CD • React, Next.js I focus on building systems that are scalable, production-ready, and designed around business outcomes. Whether it’s automating workflows, deploying AI assistants, integrating LLMs into existing products, or building complete AI SaaS platforms, I help clients turn complex ideas into reliable systems that deliver measurable value. Clients work with me because I bring: ✔ Strong architecture and problem-solving skills ✔ Clean, scalable engineering practices ✔ End-to-end ownership from planning to deployment ✔ Fast communication and reliable execution ✔ A business-focused approach to AI and automation If you're building an AI product, automation system, AI chatbot, or scalable SaaS platform, send me a message and let’s discuss your project.

Senior WordPress developer with 12+ years of experience and $300k+ earned on Upwork. I help businesses build, fix, migrate and maintain WordPress websites, WooCommerce stores and custom plugins. My strongest area is taking over existing WordPress projects: understanding old code, fixing bugs, improving architecture, integrating APIs and making the site easier to manage. Main work I do: - Custom WordPress plugin development and maintenance - WooCommerce customization, checkout, carts, pricing, subscriptions and integrations - ACF-based custom themes and admin-friendly content structures - Elementor websites, custom widgets, responsive fixes and performance cleanup - WordPress REST API, AJAX, custom post types, taxonomies, user roles and metadata - Figma / PSD to WordPress with clean responsive layouts - Website migrations, broken site recovery, hosting moves and plugin conflict debugging - Gutenberg blocks, React-based WordPress interfaces and existing plugin support I am comfortable joining existing projects, reading unfamiliar codebases, working with Git, staging environments and client requirements. I do not need hand-holding, but I ask practical questions when something affects the result, SEO, performance or maintainability. Recent relevant work includes custom plugins, Gutenberg blocks, WooCommerce projects, ACF multilingual websites, Elementor builds, WordPress migrations and API integrations.

Software Architect & Technical Writer. 16 years of engineering experience. 86 completed projects across 35+ organizations — Branch, Bright Data, NexHealth, Fonoa, and more. I build API and Product documentation systems that keep pace with fast-moving products. CORE SERVICES: → API & Developer Documentation — Turn complex REST, GraphQL, and OpenAPI specs into clean, navigable references developers trust and return to → Documentation Architecture — Design docs-as-code pipelines, CI/CD workflows, and multi-environment setups that keep your docs in sync with your codebase automatically → SaaS & Platform Docs — Build onboarding flows, help centers, release notes, and internal runbooks that reduce time-to-value for every new user → API Integrations & Technical Guides — Build and document the integration layer so your developers have both working code and clear guidance → AI Agents & Automation Systems — Design and deploy Claude/OpenAI-powered agents, LLM workflows, and automation pipelines (Make, Zapier, GitHub Actions) that handle real business processes end-to-end Documentation Platforms: ReadMe · Mintlify · Docusaurus · Stoplight · GitBook · Swagger/OpenAPI 3.0 · Redoc · Postman · Confluence Technical Stack: Claude API · OpenAI · LangChain · Make · Supabase · Node.js · REST · GraphQL · GitHub Actions · JavaScript · Python · AWS Industries: AI/ML · Fintech · Healthcare · SaaS · Developer Tools · Maritime · E-Commerce Lets connect and I can map out exactly what needs to be built.

There's no such thing as impossible integration. I solve the API integration and payment automation projects other developers give up on, from legacy banking systems to blockchain and crypto payouts. I bring 22+ years of 🌐 Web Development experience, including 18+ years with ⚙️ Custom PHP and 16+ years with 📝 WordPress and 🛠️ API Integration. I've built pipelines processing over 1,200,000 records at a time and connected systems ranging from 1974-era nacha banking files to modern stablecoin payout rails. Based in Washington State, I work 30-45+ hours a week during American business hours and adapt fast to whatever a project requires. ==================================== ⚙️ CUSTOM SCRIPTING & AUTOMATION Cron-based processing, data pipelines, CSV/blockchain reconciliation tools, web scraping, IMAP email automation, analytics dashboards (Chart.js, DataTables), Cloudflare Workers, Twilio SMS / A2P 10DLC. If you do it by hand twice a week, I'll script it to run itself - exactly on your schedule. ==================================== 🛠️ COMPLEX & CUSTOM API INTEGRATIONS REST, SOAP, GraphQL, webhooks, JSON/XML, OAuth2, HMAC signatures, token refresh, rate limits, retries - the parts that break in production. From one-way pushes to full two-way synchronization, real-time or batch. Strong focus on authentication, error handling and personal data security. Pipelines processing 1,200,000+ records at a time with automatic updates down to the minute. ==================================== 💳 PAYMENT SYSTEMS DEVELOPMENT Payment gateways and checkout flows: Stripe, PayPal, Square, First Data / Fiserv, Plaid, Seamless Chex, high-risk merchant gateways, subscription billing, ACH / NACHA files, webhook and chargeback handling, WooCommerce / WHMCS / Shopify gateway plugins. Crypto payments: USDC / PYUSD / stablecoin payout systems, multi-chain (Ethereum, Polygon, BSC), Web3, Coinbase, NowPayments, Etherscan, Tatum, on-chain reconciliation. ==================================== Some API integrations I have experience with: Ahrefs API, Amazon API Gateway, Amazon AWS API, Amazon Lambda API, Amazon PA API, Amazon S3 API, Ankr API, Bank of America API, BigCommerce API, Brevo API, Bright Data API, ChatGPT API, Cloudflare API, Coinbase API, Detroit Trading API, Dukascopy API, Dynadot API, eBay Product API, Envato API, Ethereum API, Etherscan API, First Data API, Fiserv API, GoDaddy API, Google Places API, HubSpot API, Jobber API, Lead Prosper API, MaxMind API, Meta Marketing API, Modern Dropship API, NameSilo API, NowPayments API, OpenAI API, PayPal API, Plaid API, Polygon API, Polygon Scan API, Relograde API, RiskPay API, Round Sky API, Samsara API, Seamless Chex API, SendGrid API, Shopify API, Slack API, Square API, Stripe API, Supabase API, Tatum API, Thumbtack API, Trulia API, Twilio API, Web3 API, WhatsApp Cloud API, WooCommerce API, Zillow API, and more. ==================================== There's a reason for my Job Success Score: I get it right the first time. If your last developer said it can't be done, send me the docs. Every automation I build saves you time and money from day one.