Top 1% Expert-Vetted Freelancer on UpWork ✅ Hi 👋 I’m Gabe. I’m an AI-native senior product engineer who uses modern AI tools to ship production-grade software faster — without sacrificing architecture, quality, or long-term maintainability. I have 10+ years of experience building and scaling apps for Fortune 500 companies and startups, especially in high-stakes systems where timelines are tight or codebases already exist. My stack includes Cursor, Replit, OpenClaw, and LLMs — used where they actually make sense to move faster and reduce bugs. Everything I ship is grounded in clean architecture and production-ready code. What I Bring to the Table 🧠 AI-Native Development – Faster iteration without sacrificing quality 📱 Mobile & Full-Stack Expertise – React Native (iOS & Android), TypeScript, React, Next.js, Firebase, Vercel, Railway 🚀 MVPs & Prototypes – From idea → working product quickly 🛠 Fixing & Scaling Existing Apps – Notifications, performance, migrations, stability 📞 Clear Communication – Realistic estimates, proactive updates, no surprises Why Work With Me? ✅ Top 1% on Upwork (Expert-Vetted) ✅ Fortune 500 + high-traffic production experience ✅ Strong ownership and long-term thinking ✅ Trusted to solve hard problems, not just ship features Testimonials ⭐ “Gabe was incredible. He went above and beyond.” ⭐ “Great estimates, great communication, and consistently high-quality work.” If you're building something that matters, send me a message describing the problem. I'll let you know within 24 hours if I'm the right fit.

I am a Full-Stack Engineer with a strong background in building scalable, secure, and user-friendly web applications. Over the past several years, I've helped startups, SMBs, and enterprise clients turn ideas into production-ready solutions by combining modern frontend frameworks, robust backends, and reliable cloud infrastructure. I enjoy taking on projects that require both problem-solving and creativity - whether that's building a custom web app from scratch, modernizing a legacy system, or optimizing an existing WordPress site for performance and SEO. If you're looking for a reliable full-stack developer who can handle everything from frontend polish to backend logic and cloud deployment, I'd be happy to help bring your project to life.

⭐ Full Stack Developer | .NET | PHP | MERN | AI | Mobile App Developer | Flutter Developer | iOS & Android Specialist I am a Full Stack Developer, Mobile App Developer, and Flutter Developer trusted by Google, Samsung, BMW, and LG. I help startups and enterprises build high-performance mobile apps and scalable web platforms using Flutter, .NET, PHP, MERN, Android, iOS, and AI technologies. If you're looking for a dependable Flutter App Developer, iOS Developer, Android Developer, Full Stack Developer, or MERN Developer, I can take your project from concept → UI/UX → development → backend → deployment → scaling. 🚀 Why Clients Hire Me Expert Full Stack Developer for web & mobile apps Senior Flutter Developer for cross-platform mobile apps Experienced iOS Developer & Android Developer for native apps Strong .NET Developer, PHP Developer, and MERN Developer AI-Driven App Development (chatbots, automation, ML features) Delivered 50+ successful apps for global brands Clear communication, fast delivery, and long-term support Clients frequently choose me when searching for: Full Stack Developer, Flutter Developer, Mobile App Developer, iOS Developer, Android Developer, .NET Developer, PHP Developer, MERN Developer, AI Developer. 💼 What I Do 📱 Mobile App Development Flutter App Development (iOS + Android in one codebase) iOS App Development (Swift, Xcode) Android App Development (Kotlin, Java) Firebase, REST API & cloud integrations UI/UX implementation, app optimization & bug fixing Full-cycle Mobile App Developer services from idea to rollout 🌐 Full Stack Web Development MERN Stack Development (MongoDB, Express, React, Node.js) .NET Web Development (ASP.NET, .NET Core) PHP / Laravel Development Custom REST API development Admin panels, dashboards, CRMs, web portals, SaaS platforms Backend architecture, authentication, cloud deployment 🤖 AI & Automation AI-powered mobile & web apps AI chatbot development Intelligent automation systems AI API integration (NLP, vision, recommendations, workflows) 🔧 Tech Stack Mobile Flutter, Dart Kotlin, Java Swift, Xcode Web / Backend MERN Stack (MongoDB, Express, React, Node.js) .NET, ASP.NET Core, C# PHP, Laravel JavaScript, jQuery Firebase, SQL, MySQL REST APIs, Cloud Integrations ⭐ Industry Expertise Taxi Web & App Developer Rideshare Web & App Developer Food Delivery Web & App Developer Grocery Delivery Web & App Developer E-commerce Web & App Developer Marketplace Web & App Developer On-Demand Services Web & App Developer Fitness Web & App Developer Health & Telemedicine Web & App Developer EdTech Web & App Developer Learning Management (LMS) Web & App Developer Job Portal Web & App Developer Social Media Web & App Developer FinTech Web & App Developer Digital Wallet Web & App Developer Crypto Wallet Web & App Developer Inventory Management Web & App Developer Real Estate Web & App Developer Vehicle Rental Web & App Developer Travel & Hotel Booking Web & App Developer Auction & Bidding Web & App Developer Subscription Web & App Developer SaaS Web & App Developer Productivity Web & App Developer Event Management Web & App Developer Dating Web & App Developer Parenting Web & App Developer Mental Health Web & App Developer Meditation & Mindfulness Web & App Developer Language Learning Web & App Developer News & Magazine Web & App Developer Podcast & Audio Streaming Web & App Developer 🎯 Ready to Build Your App or Platform? Click Invite to Job and let’s bring your idea to life — mobile, web, or AI.

Looking for challenging new projects which can effectively use my talents and creativity, to generate cost effective software solutions. I'm a world class C programmer (primarily on Unix/Linux) and I'm used to making "impossible" tasks "possible". I have a great deal of expertise in: * real time embedded systems * cross compilation/software construction * source control * network programming * system administration * kernel level programming/device drivers * image processing * performance and metrics

Full Stack Developer | AI Agents, LLM Apps & Data Science | Next.js | Node | Python | GoLang I build production AI applications, data pipelines, and full-stack SaaS platforms for startups and enterprise teams. Recent work: a SaaS platform with 5 live AI automation modules (65 planned across a 24-week rollout) and a HIPAA-compliant medical records platform where every data access is logged and defensible. 10+ years shipping code, the last two focused on AI-accelerated development with Claude Code, Codex, Cursor, and whatever ships next: multi-agent systems and LLM integrations that actually run in production. What I do AI engineering: Claude, OpenAI, and Gemini integrations, multi-agent orchestration with LangGraph, RAG pipelines, evaluation harnesses, and production-grade LLM features that hold up beyond the demo. I recently built a Claude-powered proposal generator and an AI report analysis pipeline, both live in production. Data science & ML: Data pipelines, ETL, feature engineering, model integration, and analytics tooling. Pandas, NumPy, scikit-learn, and the glue code that gets models into production. Full-stack development: React / Next.js, Node.js, Python / Django, FastAPI, PostgreSQL, React Native. Clean APIs, sensible architecture, code that other engineers can maintain. Shipped platforms include (HIPAA-compliant EMR: role-based access control, PHI encryption, audit trail logging built to HIPAA Security Rule standards). AI-accelerated workflows: Daily use of Claude Code, Codex, and Cursor with custom configs, MCP server integrations, and agentic dev loops that meaningfully cut delivery time on real client work. Comfortable picking up new AI tooling as it emerges. Cloud & infrastructure: AWS, GCP, Azure, Docker, CI/CD. Built for the load you actually have, not the load a slide deck says you'll have. Industries: SaaS, healthcare (HL7/FHIR/DICOM/HIPAA), fintech, ecommerce (including Shopify and Amazon SP-API), and AI-native startups. Technology Stack: React, Next.js, Node.js, TypeScript, Python, Django, FastAPI, PostgreSQL, Redis, Docker, AWS, GCP, LangGraph, Pandas, scikit-learn, Claude Code, Codex, Cursor, OpenAI / Anthropic / Gemini APIs, React Native. If you're building something AI-heavy, data-driven, or need a senior engineer who can own delivery end-to-end, send over the details and I'll tell you honestly whether I'm the right person for it.

I'm a software engineer with extensive experience in building Mobile Apps and Web Apps. My experiences include working with modern technologies like Flutter/Dart, React Native, Native iOS and Android, Java, Angular, and several other Web & Mobile technologies. With more than 8 years of experience in development and customization of Mobile and Web applications, I have become expert at solving complex problems and creating state of the art solutions, I like working on projects with a team that cares about creating beautiful and usable interfaces. It's important to me to build long term relationships with clients, so I'm primarily looking for long term projects. I'm flexible with my working hours and am happy to work closely with any existing freelancers you work with. My aim is to provide quality and professional solution that is easy to implement, user-friendly and highly optimised. I'm very much oriented towards customer satisfaction and quality of work. If this is what you want, then get in touch with me, I believe you'll adore working with me, I look forward to hearing from you!

Expert-Vetted Gold Badge Top 1% Talent on Upwork | 25+ Years Experience | 140 + Projects | 21k + hours | $1M + Earnings | Highly sophisticated and systematic AI prompt engineering Over the last 25 years, I have designed, developed, and project managed over 275 web and elearning projects for clients like Bank of America, Wachovia, American Express, Ford, Microsoft, Intuit and Chase. Over the last two years, I have developed sophisticated AI prompt engineering systems, which put me at the forefront of AI-driven development. I am also a software architect and business analyst who has designed and project-managed several DB-driven websites. I have created a medical coding project that teaches apprentice coders how to code medical charts, and also several projects involving API integration. My WebRTC project is LetsKinect.

🔥🔥🔥 Let’s Turn Your Idea into a Powerful, Scalable Solution! 🔥🔥🔥 💻 A Professional Cloud & Full‑Stack Developer with Broad Expertise is here! I am a process‑oriented developer with over 10 years of programming experience and 7+ years specializing in full‑stack development (React, TypeScript, Node.js, Express.js). I thrive in multiple programming environments, including Java, Python, and modern SPA frameworks—and I love building clean, scalable, and secure solutions. If you’re looking for someone reliable who communicates clearly, delivers fast, and handles complex technical challenges, you’re in the right place! ✅ Technologies & Tools I work with: • JavaScript (React, Node.js, Angular, Vue) & TypeScript • HTML5, CSS3, Sass/Less, Tailwind Css • Python, Django, FastAPI • PHP, Laravel • Databases: PostgreSQL, MySQL, MongoDB, Redis, SQLite, OrientDB • Cloud & DevOps: AWS, GCP, Docker, Docker‑compose, Kubernetes, CI/CD pipelines • Build tools: Webpack, Vagrant, Git 🚀 What I bring to your project: ✔️ Modern, responsive applications & PWAs ✔️ API design & integration, scalable cloud deployments ✔️ AI‑enabled workflows, chatbots, and smart assistants ✔️ Automations with Make.com and n8n to reduce manual work ✔️ Custom dashboards, multi‑user systems, and e-commerce platforms ✔️ Fast delivery, clear updates, and long‑term support ⚙️ Workflow Automation & AI: ✔️ Automation: Expert in designing and deploying automated workflows with Make.com, n8n, and custom-built orchestration tools ✔️ AI Integrations: Extensive experience integrating OpenAI, Vapi, and similar AI APIs to build smarter, dynamic applications ✔️ Combining AI + automation to create next‑level user experiences and streamlined back-office operations 💡 Whether you need a brand‑new app, seamless AI integration, or automation to save time and costs, I can help turn your vision into reality. 📩 Let’s connect and discuss how I can help your project succeed!

Your AI build is 80% done and stuck. Or your "automation" is held together with Zapier tape and a prayer. I rebuild the broken half, ship the rest, and hand back a system you can actually run. What I do, in plain terms: - Finish stalled AI builds. Lovable, Base44, Cursor, Claude Code, Bolt, v0, Replit - when the vibe-coded prototype hits the wall it always hits (auth breaks, Supabase RLS is wrong, the iOS wrapper won't build, the Stripe flow loops), I take it from "almost working" to "in production this week". - Build internal tools that replace your SaaS subscriptions. If you're paying $400/mo for HubSpot + $300/mo for a project tracker + $200/mo for a forms tool, and none of them talk to each other - I build the Airtable + Softr + n8n stack that does all of it for $40/mo in infra. Owned by you, not rented. - Build, deploy, and manage AI sales systems. Outbound + inbound. GoHighLevel funnels, Retell/VAPI voice agents, n8n workflows for lead enrichment, Airtable CRMs, Claude-powered routing. You tell me the goal, I build the pipe and you keep the customers. - Fix existing automations that aren't paying back. Most n8n, Make, or Zapier setups I see are 70% noise - half-finished workflows, brittle webhooks, no error handling. I audit what you have, kill what's dead, harden what's working, and add the missing 20% that turns it from "kind of useful" into "I can't run my business without this". - Production migrations. Replit to Vercel + Supabase. Lovable to React + Supabase. Bubble to custom stack. Anything that was prototyped fast and now needs to actually scale, I move it without losing the data or the customers. Stack I work in daily: AI builders: Lovable, Base44, Cursor, Claude Code, Bolt, Replit, v0 Backend: Supabase, Next, React, React Native, Node No-code: Airtable, Softr, Glide, Bubble, FlutterFlow, Webflow Automation: n8n, Make, Zapier, GoHighLevel Voice and AI: Retell, VAPI, Anthropic Claude API, OpenAI Infra: Vercel, Cloudflare, GitHub Actions, Stripe How I work: 1. Diagnose first, build second. 30-min call to map what you have and where it's stuck. If I don't think I can finish it, I'll tell you on the call. 2. Fixed scope, fixed price, fixed timeline. No hourly meters running while I read docs. You know what you're paying and when you're getting it. 3. You own everything. Code in your GitHub, infra under your accounts, no platform lock-in. If you decide to fire me on day 5, you keep the build. 4. Handoff that doesn't require me. Every project ships with a Loom walkthrough, written runbook, and a "here's how to extend this yourself" doc. A few signals the engagement is a good fit: - You started with Lovable, Cursor, or Claude Code and now you need someone who can actually finish it - You have an Airtable that's holding your business together and you want it turned into a proper platform - You're spending more on SaaS than you should and the tools don't talk to each other - You have an n8n, Make, or Zapier workflow that "works but isn't reliable" - You need a client portal, admin dashboard, or internal CRM and you don't want to wait 3 months for a "real" dev shop Not a good fit: - Hourly body-shop work where you want someone to JustCode without thinking about the system - Crypto, casino, or SDR-as-a-service - "Just build me a clone of X" with no clarity on what you actually need What clients usually say after: "Why was this taking so long before?" Send me the URL, the repo, or the Loom describing what's broken. I'll respond within 24 hours with whether I can fix it, how long, and what it costs.

I'm proficient with many frameworks, tech skills, and programming languages including React, NodeJs, HTML/CSS/JS, Firebase, Flutter, Python, Unity, WPF, ThreeJs, databases like PSQL, MySQL, and others. I've worked for a few years now here and on Freelancer, and been involved in developing and working on many interesting projects like websites, and apps & games for several platforms. I have the experience and breadth of skills to tackle many software development projects from things I am familiar with (Unity games & apps, web pages - React is my fav frontend, Flutter apps), to even things I may not have direct experience with at the moment. I learn quick, listen well, and always try to deliver good quality results. If it's software development related, I can probably do it.