I specialize in building iOS apps for health and fitness wearables, delivering seamless BLE integration, real-time data accuracy, and user-focused solutions. With over 12 years of iOS development experience, I help companies create apps that sync effortlessly with devices, boost user retention, and stand out in the market. My proven track record includes: - Prima-Temp: Fixed BLE and data sync issues that had halted a critical clinical study of in-vivo temperature sensor. Achieved successful study with an end result of 97.7% data collection rate. - Rise Science: Built background collection of HealthKit and CoreMotion data, integrating it with an AI API for personalized sleep insights. Fixed reliability issues with the Apple Watch app and iOS widget, ensuring consistent, real-time data flow. - UNICEF KidPower: Rebuilt the BLE stack for a wearable app, enabling real-time activity tracking for kids. Provided technical leadership, contributing to its feature in TIME’s 25 Best Inventions of 2016. From startups to established brands, I bring expertise in HealthKit, Core Bluetooth, and SwiftUI to solve your toughest challenges. Let’s create your next health or fitness app—message me today! # Client Testimonials "Justin builds for scale… we’ve reused his code into new experiences, saving us time and money. His specialty in the wearable market and iOS was the perfect solution to help us meet our challenges." – Ryan Modjeski, UNICEF USA. "Justin demonstrated reliability and definitely shouldered responsibility for the project… It helped me sleep well at night knowing Justin was on it." – Troy Hickerson, Calorie Cloud

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.

Expert Full Stack Architect | Experience Scaling to $1M+ | Expert Salesman Whether you need help with software development for your existing or new business, help training your sales staff to scale it, or consulting on all things business, with my experience in full stack development and building/operating 7 figure businesses, I can help. I get more enjoyment of helping others bring their business dreams to life, than helping myself find success. I specialize in the "Science of Sales," combining 15+ years of elite sales leadership I can turn your sales staff into a consistent revenue producing machine. If you are startup/early stage, I can use my experience with full-stack development to build the engines that turn inspiration into operational businesses. Whether you need a custom-built platform, a Shopify store, or an optimized sales force, I bridge the gap between your product and your revenue. What I bring to your business: I have built, operated, and managed several million dollar companies for myself and my clients. Having ranked in the top 5% of 600+ reps at Inogen, I don’t just consult, I speak from repeated success. My Hybrid Expertise: * Full-Stack Development: I design and deploy custom web/mobile apps, backend systems, and APIs. I specialize in Shopify architecture, automation, and building the CRMs/automation pipelines that make revenue predictable. * Sales Architecture: I engineer scripts using proven strategies, including persuasive questioning, consultative selling, finding the "why," and real world training that I have successfully implemented hundreds of time. I have trained and manage high-performance domestically and outsourced teams (I grew my first business from $0 to $1M in 18 months). * Business Infrastructure: From filing business licenses in tax-friendly states to building your web/mobile/Ai system and automation workflows, I set up the entire "business platform" so you can start generating revenue. The Result: A self-sustaining, system-driven business that can produce revenue without the need for constant founder intervention. Why work with me now? I have been using Upwork as a client for over 10 years and understand exactly what makes a project successful. I am currently offering reduced rates as I build out my Upwork portfolio. Industries: B2B, Medical Device, Legal Services, High-Ticket Consulting, and Direct Sales. Ready to scale or start your business journey? Message me with a brief overview of your current setup

As a seasoned Fullstack Engineer with 20+ years of experience, I build high-performance, scalable web and mobile applications that deliver exceptional user experiences. I specialize in modern frameworks and architectures, combining clean, maintainable code with a strong focus on performance and usability. Beyond traditional development, I integrate AI and automation deeply into the products I build, helping founders and teams ship smarter platforms, not just websites. That means real AI integration, custom backends, smart workflows, and interfaces your users will actually love. I bring a product-driven mindset to Agile teams, collaborating closely with designers and stakeholders to turn ideas into reliable, production-ready solutions. My expertise includes API design and integration, component-driven development, and enforcing best practices with tools like TypeScript, ESLint, and modern CI/CD workflows. ✔ Core Expertise - Frontend: React, Next.js, Vue, Nuxt.js, TypeScript, Tailwind CSS, Bootstrap, shadcn/ui - Backend: Node.js, Express, NestJS, REST APIs, GraphQL, Django, Python, PHP, Laravel, CodeIgniter - Mobile: React Native, Flutter, Ionic, PWA - AI & LLM Integration: OpenAI, Claude, LangChain, RAG, AI agents, vector databases, chatbots, content automation - Automation: n8n, Zapier, Make, custom workflow automation, API orchestration - Database: PostgreSQL, MongoDB, Firebase, Supabase, MySQL - Cloud & DevOps: AWS, Vercel, Docker, CI/CD pipelines - Code Quality: ESLint, Prettier, scalable architecture, reusable components ✔ What I Deliver - Scalable SaaS platforms and dashboards - AI-powered features (chat, recommendations, RAG, agents, automation workflows...) - Web and mobile apps built for performance and growth - High-converting landing pages and SPAs - Custom internal tools and client-facing applications - Clean, maintainable, well-documented code - Fast turnaround with clear communication I stay at the forefront of evolving technologies, continuously refining my skills to build innovative, future-ready digital products. From dynamic single-page applications to complex, data-driven platforms enhanced with AI, I focus on delivering solutions that are both technically robust and business-impactful. Whether you have a clear spec or a rough idea, I can help you scope it, build it, and ship it. Send a message with what you are working on and I will reply within a few hours.

𝐒𝐢𝐧𝐜𝐞 𝟐𝟎𝟎𝟕, 𝐰𝐞’𝐯𝐞 𝐩𝐫𝐨𝐯𝐢𝐝𝐞𝐝 𝐚 𝐭𝐚𝐥𝐞𝐧𝐭𝐞𝐝 𝐚𝐧𝐝 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞𝐝 𝐭𝐞𝐚𝐦 capable of working independently or integrating seamlessly into your existing team to turn your project ideas into reality. Offering flexible engagement models, competitive pricing, and a focus on your success, we are your ideal technical partner. Let us help bring your vision to life. # 𝐎𝐮𝐫 𝐞𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐜𝐨𝐯𝐞𝐫𝐬 𝐜𝐨𝐦𝐩𝐥𝐞𝐱, 𝐥𝐨𝐧𝐠-𝐭𝐞𝐫𝐦 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 using the latest technologies: - Mobile: Flutter, React Native - Backend: Node.js, NestJS, Python (Django/Flask), PHP (Symfony, Laravel) - Frontend: Angular, Typescript, React.js, NextJS, ExtJS/Sencha - AI: ChatGPT, Claude, Gemini 🤖 - Cloud & Databases, etc: AWS/GCP, S3, SQL/NoSQL, WebRTC - UI/UX: Design and User eXperience solutions # 𝐖𝐡𝐲 𝐏𝐚𝐫𝐭𝐧𝐞𝐫 𝐰𝐢𝐭𝐡 𝐔𝐬? - Focus on your core business while we handle your IT needs. - Access expert-level skills without the overhead of training. - Mitigate risks through our deep industry knowledge. - Streamline your operations and improve flexibility. - Boost productivity and gain a competitive edge with our expertise.

🚀 AI & Automation Expert | Full Stack Developer | Web Scraping & Crawling Specialist 🚀 I am a highly skilled software developer with over 5 years of experience specializing in AI, machine learning, web scraping & crawling, and automation. I bring cutting-edge solutions to businesses by integrating AI-powered technologies, intelligent automation, and scalable full-stack development. What I Offer: ✅ AI & Machine Learning: Custom OpenAI, DeepSeek, and fine-tuned AI models for automation, NLP, and predictive analytics. ✅ Web Scraping & Crawling: Data extraction, bulk processing, and large-scale crawling for structured insights. ✅ Automation of Manual Tasks: Creating custom scripts and AI-driven solutions to eliminate repetitive tasks. ✅ Full-Stack Development: Frontend using Next.js, and backend expertise in PHP Laravel, Python Django & FastAPI, Java Spring Boot, and Node.js. ✅ Mobile App Development: Native iOS (Swift) & Android (Kotlin) development, plus Flutter for cross-platform apps. ✅ Cloud & DevOps: Scalable deployments using AWS, Google Cloud, PostgreSQL, and MySQL. ✅ Custom AI Chatbots & Automation Bots: Intelligent chatbots, process automation, and API integrations. I am committed to delivering high-quality solutions at competitive rates while fostering long-term client relationships. Let’s discuss how I can help bring your AI, automation, and full-stack projects to life! 💡

Three companies I've designed for were acquired: POSRocket (Foodics, $35M), InVision (Miro), and Bersin & Associates (Deloitte). Founders of SaaS, mobile apps, and digital products hire me when design becomes the bottleneck: cluttered dashboards, weak onboarding, interfaces that no longer match the business they've built. I've also designed inside Upwork itself and Giant Protocol's $180M telecom portfolio. $120M+ raised by clients. Top Rated Plus, 100% JSS, 17 years. What I ship most often: • SaaS UI/UX design for B2B dashboards where the original screens have grown into a maze of nested settings • SaaS product design for MVP builds, redesigns, and rebuild work, including the parts most teams skip (admin views, billing flows, empty states) • Mobile UI design and mobile app design for iOS and Android companions to web SaaS products • Dashboard design that consolidates analytics, operations, and revenue views as teams scale past the MVP UI • Figma UI design and Figma UX systems with token discipline, Storybook handoff, and dev mode parity • UX strategy + IA mapping when the roadmap isn't clear yet: discovery sprints that lock scope before pixels Whether you're hiring a senior SaaS UI/UX designer for a dashboard redesign, a SaaS product designer for an MVP rebuild, a mobile UI designer for an iOS launch, or a Figma UX designer for the design system you outgrew, the same person owns the work end to end. If any of that maps to where you are right now, send me a message with your Figma file, product URL, or a 2-line scope of what's broken. I respond within 4 hours during US and EU business overlap. Engagements come in two shapes. A one-week UX strategy discovery sprint when the next move isn't obvious: research, audit, opportunity map, scoped roadmap. A retained design partner when the roadmap is clear and you need a senior UI/UX designer running from research to shipped pixels without daily oversight. When scope grows past solo capacity (enterprise-scale rollouts or multi-product portfolios), my Plexable agency team executes under my direction. Best fit: Seed to Series B B2B SaaS, 8 to 50 person teams, hands-on founders or product leads. I don't take on brand-only work or print. Those sit outside my lane. Based in Dubai. Most clients are US and EU. Live-call window is 8am to 2pm Eastern. Async response same day. Native English and Arabic. If you'd rather start smaller, I offer a paid 30-minute Consultation for a directional read on your current design state. After booking, send whatever helps me understand the work: Figma file, app URL, brief, deck, screenshots, requirements doc, or a Loom walkthrough. Get a written action plan within 24 hours.

If you are a founder or executive who needs to ship faster, stop wasting development budget, and get full visibility into what your team is actually doing, we should talk. Struggling to turn technical chaos into predictable delivery? With 15+ years in software and 70+ shipped web/mobile apps, I help founders clean up products, align teams, and ship SaaS faster. For early-stage startups and growing product teams, I provide fractional CTO leadership, technical audits, and architecture that holds up over the long term. HOW I CAN HELP YOU: FRACTIONAL CTO LEADERSHIP You get clear technical direction that helps your team ship faster, reduce regressed issues, and stay aligned with business goals. I have delivered 70+ web and mobile apps over 15+ years of development experience, 7 of which have been leading teams. Lately, I have stepped in to restore predictable 21-day delivery after a technical co-founder’s exit. SAAS ARCHITECTURE You get a scalable system that supports growth without creating future technical debt. My background includes Node.js, TypeScript, React, Next.js, React Native, PostgreSQL, AWS, and multi-tenant, offline-first, or white-label architectures across FinTech, Healthcare, EdTech, PropTech, and marketplace products. TECHNICAL DUE DILIGENCE You get a clear view of technical risk before you invest, hire, or scale. I have prepared technical estimates, roadmaps, and system assessments that helped startups secure funding and make better build-versus-fix decisions. CODE REVIEW AND QUALITY AUDIT You get fewer bugs, stronger maintainability, and better visibility into what your team is actually shipping. I have led hands-on code audits and delivery reviews across distributed teams, including projects in which structured process changes reduced white-label app delivery time for 28%. MOBILE APP DEVELOPMENT STRATEGY You get a mobile product plan that enables faster launch and a better user experience on iOS and Android. I have led React Native and native iOS work on 30+ shipped products across healthcare, streaming, logistics, and cross-platform apps, with complex synchronization and offline support. 🏆 RESULTS Certifications: 🎖 AWS Introduction to Information Technology and AWS Cloud 🎖 Personal Data Protection, GDPR Principles See full case studies in my portfolio below. 𝗚𝗘𝗧 𝗜𝗡 𝗧𝗢𝗨𝗖𝗛 Message me on Upwork if you need fractional CTO support, SaaS architecture guidance, or a technical audit that helps you ship with confidence. I can also help with roadmap planning, code review, and team leadership. I typically respond within 4 hours and can quickly join if it's urgent projects. Core Technical Stack: - Backend: Node.js (NestJS, Express), TypeScript - Frontend: React, Next.js, Redux, MobX - Mobile: React Native, Expo ( Native iOS ) - Databases: PostgreSQL, MySQL, MongoDB, Firestore. - Infrastructure: AWS, Azure, Docker, CI/CD. I lead delivery in React, React Native, Node.js, and TypeScript, with PostgreSQL for reliable data models and AWS for scalable systems. I use Docker and CI/CD to keep releases predictable, and I review code in Jira-driven workflows so the team stays aligned. Despite using AI in everyday life, I prefer "boring," proven technology that ships today and holds up a year from now over chasing monthly trends. My longest client relationships span 4 to 9 years. If you are building for the long term and want technical leadership you can trust, let’s talk. Note: 𝐈 𝐃𝐎 𝐍𝐎𝐓 𝐖𝐎𝐑𝐊 𝐰𝐢𝐭𝐡 𝐠𝐚𝐦𝐛𝐥𝐢𝐧𝐠, 𝐜𝐫𝐲𝐩𝐭𝐨, 𝐯𝐢𝐛𝐞 𝐜𝐨𝐝𝐞𝐝 𝐚𝐩𝐩𝐬

15+ years in UI UX Design and 100+ product projects delivered, helping teams improve activation, conversion, retention, and usability. I'm a UI UX Designer who turns complex ideas into clear, build-ready interfaces across SaaS & Web App Design, Website Design, and Mobile App Design. WHAT I DO (CLIENT RESULTS FIRST) If you need a UI UX Designer who can simplify complexity without dumbing down the product, you're in the right place. My UI UX Design work is built to: • Increase onboarding completion and time-to-first-value with clearer flows • Improve conversion on key actions, sign-up, upgrade, checkout, booking • Reduce user confusion and support tickets with complete UI states and better UX writing • Speed up delivery with a scalable system your team can reuse • Align design and engineering so Web App Design and Mobile App Design ship as intended TYPICAL METRICS CLIENTS AIM TO IMPROVE Results depend on product, traffic, and implementation, but UI UX Design improvements commonly target: • +10-30% onboarding completion and activation • +5-20% conversion on core flows, sign-up, upgrade, checkout • -15-35% confusion-driven support tickets by fixing states and clarity issues • Faster releases by reducing UI rework and standardizing components WHERE I ADD THE MOST VALUE I've worked across B2B and B2C products for 15+ years, and my UI UX Design experience covers everything from early MVPs to mature platforms. My selected portfolio includes 19+ SaaS and dashboard web apps, 14+ websites and landing pages (marketing, product, and eCommerce), and 11+ mobile apps (iOS and Android). As a UI UX Designer, I'm especially effective on products with real logic: dashboards, admin panels, tables and filters, multi-step forms, roles and permissions, settings and billing, and mobile feature flows. MAIN SERVICES (UI UX DESIGN) • End-to-end UI UX Design for new products and MVPs • Web App Design for SaaS platforms, dashboards, admin portals, internal tools • Website Design for marketing sites, product sites, landing pages, and eCommerce, built in Figma for Webflow, WordPress, or Framer • Mobile App Design for iOS and Android, onboarding, engagement, subscriptions • UX audits, heuristic reviews, redesign roadmaps (quick wins and long-term fixes) • User flows, information architecture, wireframes, prototypes, interaction specs • Design systems, components, tokens, documentation for consistent UI UX Design WHAT YOU RECEIVE Hiring me as your UI UX Designer means you get production-ready UI UX Design that reduces rework: • A clean Figma file organized for handoff, components, variants, tokens, styles • Responsive Web App Design layouts with clear hierarchy and data density rules • Conversion-focused Website Design and landing pages with clear hierarchy, strong CTAs, and responsive layouts • Mobile App Design screens aligned to native patterns and real device constraints • Full state coverage, loading, empty, error, disabled, permission-based states • Interaction notes for forms, tables, filters, modals, onboarding, key actions • Optional implementation support, I review builds and keep UI UX Design consistent HOW WE'LL WORK TOGETHER 1. Align on goals, users, constraints, success metrics 2. Map journeys and edge cases, then iterate in wireframes 3. Create high-fidelity UI UX Design in Figma for Web App Design or Mobile App Design 4. Build or extend the system to prevent inconsistencies across screens 5. Handoff with clear specs, then support QA so what ships matches the UI UX Design TOOLS AND COLLABORATION Primary tools: Figma, FigJam. Collaboration: Notion, Jira, Slack, Google Workspace. I design with component-based thinking and can align UI UX Design to React and Next.js patterns, Tailwind, shadcn-style components, and design tokens so Web App Design implementation is straightforward. For Website Design I design in Figma and hand off clean, build-ready files for Webflow, WordPress, or Framer. WHY CLIENTS CHOOSE ME • Strong product judgment, I ask the right questions early to avoid rework • Clear communication, fast iterations, no surprises • UI UX Design that balances usability, brand, engineering constraints • A UI UX Designer who delivers consistent Web App Design and Mobile App Design systems, not one-off screens NEXT STEP Send your product link (or brief), current challenges, and timeline. I'll reply with a practical plan, clear deliverables, and the fastest path to measurable improvement in your UI UX Design.

With more than a decade of experience spanning various time zones, I am an accomplished developer proficient in both web and mobile development. My expertise lies in creating web applications and developing hybrid or native mobile apps for a range of platforms. I have honed my skills in building websites, and online marketplaces catering to both business-to-business (B2B) and business-to-consumer (B2C) sectors, as well as designing highly effective landing pages that generate significant conversions. Frontend Technologies: ✅React: Gatsby, Redux Thunk, Redux-saga, Context, Jumpsuit, Rematch, Recompose, Mobx, Styled Component, Apollo GraphQL, DVA, Next.js, Storybook, ReactXP, Ant Design ✅Angular: all Versions, AngularDart, Ngrx ✅UI Frameworks/Libraries : Tailwind, Bootstrap, Semantic UI, Material UI Backend Technologies : ✅PHP ✅Node ✅ASP.Net ✅Laravel CMS: ✅Shopify ✅Wordpress/Woocommerce ✅Wordpress Themes/Custom Development ✅Wix ✅Squarespace ✅Webflow Databases: ✅MySql ✅SQLite ✅PostgreSQL ✅NoSQL ✅MongoDB Native Apps: ✅Swift ✅Java Hybrid Apps: ✅React Native ✅Flutter Scrum / Agile Environments: ✅Github ✅Bitbucket ✅Gitlab ✅Jira ✅Trello ✅Slack Let's connect for more information about my skills and if you have other queries. Thanks