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$65/hr
$9K+ earned
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Results-oriented software engineer having experience of 5+ years in industry, research professional & Entrepreneur with hands-on experience of designing, development and deployment of Modern applications. I've developed and delivered wide variety of applications like Social Network, business, education, social gaming, health, Tracking, shopping and fitness Mobile & Web applications. ♕ Skills & Expertise ♕ ✦ Web Application Development ◆ Backend • Golang, Node.js, NestJS, Express & MongoDB ◆ FrontEnd • Angular & ReactJS ✦ Mobile Application Development ◆ Native • Swift & Java ◆ Hybrid • ReactNative, Ionic & Flutter, KMM(Kotlin Multiplatform Mobile) —• Looking Forward • — Thanks ✌
Marcos J.
$225/hr
100% Job Success
Available now
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✅ Price Guarantee ✅ Quality Guarantee I help early-stage founders navigate technical inflection points: scaling engineering teams, modernizing architecture, adopting AI-assisted development workflows, and preparing products for growth without accumulating crippling technical debt. Most recently, I helped build Bellwether Coffee from its earliest product stages through more than $100M in fundraising, eventually serving as VP of Engineering. I scaled a globally distributed engineering organization across 12 countries, led the company’s first enterprise cybersecurity initiative, and helped deliver production systems operating across three continents. My work today focuses on AI-native architecture, agentic systems, engineering governance, and helping startups make durable technical decisions under uncertainty. I specialize in situations where founders need a senior technical partner who can quickly identify architectural risks, align engineering execution with business goals, and improve product and organizational clarity without slowing momentum. Recent work includes: • Leading the development of AI-driven web and mobile products from zero to launch • Designing LLM orchestration systems and multi-agent workflows • Refactoring evolving platforms for scalability, maintainability, and operational clarity • Building real-time analytics and observability systems • Advising startups on architecture, technical hiring, AI adoption, and engineering process I hold a BS in Computer Systems Engineering from Stanford and an MS in Computer Science from Georgia Tech. I was granted US Patent 6,195,657 for collaborative recommendation systems based on user behavior, anticipating concepts now central to collaborative filtering and vector-based recommendation architectures. I’m also a Kauffman Fellow and founder of Prelatent, where I work on applying spectral graph theory and formal verification techniques to coordinated financial crime detection. I work with a small number of companies at a time, deliberately. My engagements are hands-on, high-trust, and focused on helping founders raise the technical ceiling of their organizations.
Carprece R.
$75/hr
100% Job Success
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Helping Startups & Enterprises Build Reliable, AI-Enabled Systems I help companies overcome unstable systems, integration bottlenecks, and production bottlenecks - turning fragile codebases into scalable, reliable, and production-ready platforms. With 15+ years of experience in backend architecture, mobile apps, AI integration, and cloud deployment (AWS, Azure, GCP), I specialize in solving complex technical challenges that slow down growth or increase operational risk. My expertise includes: • AI & ML Integration: Structured prompt design, LLM evaluation loops, JSON outputs, and automation workflows • Backend Architecture & Microservices: Scalable, maintainable systems for web and mobile applications • Payments & Cloud Systems: Stripe integration, secure cloud deployment, CI/CD pipelines Recent results: • Reduced AI output variance and improved reliability across thousands of records for an enterprise client • Delivered microservices for a federal healthcare platform, improving notification delivery speed and system stability • Built production-ready payment and e-commerce systems, cutting manual processing by 80% If you need to stabilize a system, integrate AI into your workflow, or build a high-quality backend platform, I can help you do it efficiently and reliably. AI & Automation: Prompt Engineering, LLMs (GPT-4/5), NLP, Structured Output, Evaluation Loops, LangChain Backend & Web: Java, Python, Spring Boot, FastAPI, REST APIs, Microservices Mobile: iOS Apps (Swift) Databases: MySQL, PostgreSQL, Oracle Cloud & DevOps: AWS, Azure, GCP, CI/CD (GitHub Actions) Payments & APIs: Stripe, OAuth, Postman, Swagger Featured Projects: AI Evaluation Loop Platform Designed structured prompts and evaluation workflows for LLMs, improving model consistency and reliability across thousands of records. Impact: Reduced output variance and improved accuracy. Government Healthcare Microservice Platform Developed backend microservices for federal healthcare notifications. Impact: Improved delivery speed, reliability, and employee communication. Startup Fitness App (iOS) Built a mobile app capturing user data and integrated AWS cloud storage. Impact: Enhanced user experience and retention through seamless cloud integration. Baked Goods E-Commerce Platform Developed backend microservices with Stripe payments and admin dashboards. Impact: Reduced manual order processing by 80%, improving operational efficiency. Why Hire Me: Strategic Problem-Solver: I don’t just code — I solve technical challenges aligned with your business goals. Senior Expertise: 15+ years building scalable, production-ready systems. AI + Engineering: Integrating AI into workflows for consistent, reliable results. Reliable Communication: Clear, proactive updates and milestone tracking. Call-to-Action: Let’s discuss your project and explore how I can help you scale your system, integrate AI, or stabilize complex applications. High-impact, production-ready solutions start here.
Carprece R. has worked .
Siver Solutions LLC
Associated with
Siver Solutions LLC
Sonet A.
$75/hr
100% Job Success
$10K+ earned
Available now
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Need a mobile app, a web app, or real AI built into your product, all from one reliable engineer who owns it start to finish? That's what I do, and I do it Top Rated, with 100% Job Success and 5 stars on every project I've delivered. Anyone can get an AI demo running in a weekend now. Turning that into a real product you can charge for and trust with real users is a different job, and that's the one I do. Most projects need more than one piece. An app that needs a web dashboard. A website that needs a mobile version. An AI feature that has to work in production, not just in a demo. I build all of it, so nothing breaks in the handoff between freelancers, and you deal with one person who owns the outcome. You're in the right place if: - You want one developer to own your web app, mobile app, and backend together - You want real AI inside your product, not a chatbot bolted on the side - Your last developer went quiet mid-build and you need someone reliable - You need a working MVP in weeks, not months - You want clean, documented code you won't pay to rebuild next year What I build › Websites & Web Apps Modern websites and web apps with Next.js and React: SaaS platforms, admin dashboards, client portals, and landing pages, with the backend, database, and Stripe payments built in. › Mobile Apps iOS and Android apps with React Native and Flutter, from idea to App Store and Play Store. Social, fitness, marketplace, real-time, and MVP builds shipped to live users. › AI Features Real AI built into your app: chat assistants, AI that knows your own data (RAG), text-to-speech, and smart workflows powered by Claude and OpenAI. Integrated to hold up with real users, not just in a demo. Why clients keep working with me - Top Rated, 100% Job Success, and 5 stars on every project I've closed - One engineer for web, mobile, backend, AI, and launch, so nothing gets lost between teams - Shipped real products to the App Store and to live web users, and led dev and design teams as Technical Lead - BSc Computer Science, plus 8+ years building and shipping software - 0 to 4 hour response time with clear, honest updates Tools: React Native, Flutter, Expo, Next.js, React, TypeScript, Node.js, Python, Django, Supabase, Firebase, PostgreSQL, Claude, OpenAI, RAG, LangChain, Stripe, AWS, Docker
Ivan N.
$65/hr
100% Job Success
$100K+ earned
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🚀 $50M+ in Client Revenue | 100% Job Success | 8+ Years on Upwork I specialize in Mobile app development for products that are intended to run in production, support real users, and continue evolving over time. My work in Mobile app development is focused on stability, clear architecture, and avoiding short-term decisions that create long-term cost. I typically work on apps that need to be maintained, extended, and operated by teams long after the initial release. As a Hybrid app developer, I take responsibility for how mobile applications behave across platforms and over time. Being a Hybrid app developer means more than sharing code between iOS and Android. It means making architectural choices that reduce future risk, keep development predictable, and allow teams to continue building without constant rewrites. That mindset shapes how I approach Mobile app development from the start. 📱The majority of my Mobile app development work is built with React Native. I use React Native in production environments where reliability and clarity matter. React Native can scale well when it’s structured properly and treated as a long-term system rather than a shortcut. As a Hybrid app developer, I focus on clear data flow, predictable behavior, and codebases that teams can safely evolve. React Native is central to how I deliver maintainable Mobile app development. Alongside React Native, I have hands-on experience with Flutter in production mobile applications. This broader exposure helps me make informed decisions as a Hybrid app developer, rather than forcing a single framework into every situation. I also regularly work with existing react native projects that require refactoring, stabilization, or preparation for long-term ownership. 📊 Across my Mobile app development work, applications I’ve contributed to have surpassed 1M combined downloads and support tens of thousands of monthly active users. Several of these products are still actively developed years after launch. As a Hybrid app developer, I view longevity and operational stability as the real indicators of success in Mobile app development, not just release milestones. I often work as a full stack developer alongside Mobile app development, designing and integrating backend services, APIs, and infrastructure. My background as a web developer helps ensure mobile apps fit cleanly into larger systems that include dashboards, internal tools, and third-party integrations. This end-to-end perspective reduces friction and keeps Mobile app development aligned with the rest of the product. 🧠 In practice, my work as a Hybrid app developer commonly involves: - structuring or refactoring React Native applications - improving runtime stability and performance - reducing complexity in growing Mobile app development codebases - preparing MVPs to evolve into long-term products I’ve seen enough Mobile app development projects to know where they usually break down. As a Hybrid app developer, I try to prevent that by keeping React Native apps straightforward, well-organized, and easy to change. I avoid clever shortcuts and patterns that look good early but create problems later. The aim is steady, predictable progress rather than fragile speed. 🛠️ A significant part of my work involves taking over mobile apps that have become difficult to maintain. Many React Native projects move quickly at the beginning and accumulate hidden complexity. I regularly step into these situations to simplify structure, clarify boundaries, and make ongoing Mobile app development manageable again. In many cases, this has more impact than adding new features. 🔄 Mobile app development is iterative by nature. Requirements change, usage patterns evolve, and teams grow. As a Hybrid app developer, I design React Native applications so they can adapt without destabilizing the system. This flexibility is especially important for early-stage products transitioning into long-term platforms. I care about how teams interact with the code after delivery. As a Hybrid app developer, I aim for React Native projects that internal developers, designers, and product owners can open and work with confidently. Clear structure and readable logic make everyday Mobile app development far less error-prone. 🌱 Many of my Mobile app development engagements start at the MVP stage and continue through multiple growth phases. I deliberately avoid disposable prototypes. As a Hybrid app developer, I use React Native to move efficiently while establishing foundations that support future features, scaling, and team handover. 🤝 Clients typically engage me as a Hybrid app developer when they need clear ownership beyond initial delivery. Using React Native in real production contexts, I focus on building Mobile app development systems that are stable under real usage, maintainable by teams, and structured to evolve without repeated rework.
Interactivated Solutions - Top Rated Plus Agency
Associated with
Interactivated Solutions - Top Rated Plus Agency
$3M+
earned
$60/hr
100% Job Success
$80K+ earned
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Starting a new mobile project and want to ensure it’s built right from day one? Or do you have an existing application that needs a professional architectural overhaul to handle growth?
 Most mobile MVPs hit a ceiling because they lack a scalable foundation. I specialize in helping founders and businesses navigate the critical transition from "initial idea" to a high-performance, production-ready application. Whether you are starting with a blank canvas or looking to stabilize an existing codebase, I ensure your mobile presence is secure, responsive, and built to last.
 I don't just "build apps"; I architect mobile solutions. I prioritize clean, typed, and efficient Dart engineering to ensure your product isn't a "house of cards" that breaks the moment you gain traction.
 👤 Why Partner With Me? - I act as a Technical Partner who understands that code is a means to a business end. With 5+ years of experience in mobile leadership, I treat your budget and timeline with the same respect I treat my own. - Strategic Planning: I don't just ask "How do I code this?" I ask, "Is this the most efficient way to solve the business problem?" I help you prioritize the core features that drive value and revenue.
 - Architectural Foresight: I have the experience to spot potential bottlenecks—like poor state management or inefficient API layers—long before they become expensive disasters.
 - Clear Communication: I bridge the gap between "Tech" and "Business." I explain complex architectural decisions in plain English so you always maintain full control over your product roadmap.
 🤝 Who Am I a Good Fit For? - Founders Starting from Scratch: You want a solid foundation from Day 1 so you never have to "rebuild from the ground up" later.
 - Businesses Improving Existing Apps: You have a working app but need a professional to refactor the core for better stability, speed, or security.
 - Non-Technical Visionaries: You need a partner to own the technical roadmap and manage the complexities of the App Store and Google Play.
 - Long-Term Thinkers: You value reliability, clean architecture, and a partner who will tell you "no" if a feature isn't technically feasible.
 Ready to start your next project or professionalize your existing one? Let’s discuss your technical roadmap and build something that scales.
 🛠 Mobile Tech Stack Framework: Flutter (iOS, Android, Web), React, Nodejs, Typescript State Management: Stacked (Expert), Provider, Riverpod Backend: Firebase (Expert: Firestore, Functions, Auth), Supabase AI Integration: OpenAI/Gemini API, RAG for mobile, AI-driven automation Architecture & DevOps: Clean Architecture, CI/CD Pipelines (GitHub Actions), Unit & Widget Testing Design & Tools: Figma-to-Code, Postman, Git, Cursor, Claude Code

Ahmed B. has worked .
Stephen K.
$95/hr
100% Job Success
Offers consultations
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Hello, I am Steve ✔️ I am an all rounded, digital solutions creator working with a small, very skilled, IT "seal" team. ✔️ My 100% focus is on building custom web & mobile applications with a bold, outstanding, and articulate design ✔️ I graduated with a Diploma in IT in 2001, a Degree in Computer Science in 2005, and a Master's Degree in Applied Computer Science in 2008 from the University of Maryland ✔️ Since 2011, we have served dozens of small & medium businesses, startups & individuals helping turn their ideas into reality. ✔️ We have successfully completed 3 projects funded by the federal government and done a project for Microsoft ✔️ If you want a reliable, serious, truly commited partner whom you can easily reach, I am here. ✔️ We enjoy what we do & want to keep building a strong reputation as reliable and trustworthy experts in providing technology solutions ✔️ Besides work, I love reading, ice skating, roller skating, traveling and speaking Here is some feedback from Upwork clients like you: ⭐ Stephen's strength is his timely communication. He tries his best to adhere to the specifications and feedback provided along the way and genuinely wants to create the best product and satisfy user needs. It was a very professional and transparent experience working with him. ⭐ Best developer on upwork. Will never use anyone again, This guy is the real deal and the best I've ever worked with ⭐ It was a great work by an Excellent Freelancer! ⭐ Great vision and ability to make sense of non-technical people like me. ⭐Steve did a great job. Working with him is a pleasure and very productive ⭐ I have had problems with some other freelancers in the past, so I posted a portion of a larger project as a test. Stephen amazed me with a flawless deliverable on the first try... ⭐Steve is great! Attentive and got the job done right! ⭐Great communication and quick responses. ⭐ Great Work. Pleasure to work with ⭐ A+++ ⭐Very professional. Great work and service. Thank you. ⭐A+ wirk again Stephen. Thank you ⭐Steve produced great webdesign and is very motivated to understand the clients vision ⭐Steve is a good webdesigner who invests time and energy to find out what the client has in mind for his project. I enjoyed working with him. ⭐Steve works hard and takes pride in his work. He pushes hard when he needs to and made sure we were satisfied with our apps and website work! ⭐Great and trustful freelancer with wonderful design skills. I highly recommend him for any freelance job. Core Expertise: ⚡️UI/UX and Design: Web & Mobile UI Design, HTML5, CSS3, JS, Bootstrap, Responsive design ⚡️Mobile: iOS development, (Swift + Xcode), Android development (Java + Android Studio) ⚡️Development: Custom PHP, Laravel, React, Angular, JQuery Framework, Yii, CodeIgniter, WordPress, Backend Systems ⚡️eCommerce: Custom eCommerce, Shopify, WooCommerce, Apple Pay, Google Pay, Stripe API, PayPal API, Amazon Payments, 2-Checkout, PayU, First Data
Serhii R.
$75/hr
100% Job Success
$800K+ earned
Available now
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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.
smallteam.
Associated with
smallteam.
$100K+
earned
Ashar S.
$65/hr
100% Job Success
$100K+ earned
Available now
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I build intelligent, scalable, and automation-driven digital products for startups, SMEs and enterprise organizations. I am a Full-Stack AI Engineer and Web & Mobile Application Specialist with 13+ years of experience designing, developing, and scaling production-grade software solutions across FinTech, SaaS, Healthcare, PropTech, eCommerce, Logistics, Education, AI platforms and enterprise business applications. Unlike developers who only focus on writing code, I approach projects from a product engineering perspective by understanding business workflows, architecture, scalability, user experience, automation opportunities and long-term growth. My expertise includes: 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 Frontend: • React.js • Next.js • TypeScript • Angular • Vue.js • Tailwind CSS • Material UI • Responsive UI/UX implementation Backend: • Node.js • Express.js • NestJS • Python • Django • FastAPI • PHP • Laravel • REST API Development • GraphQL APIs • Microservices Architecture • Serverless Applications Databases & Cloud: • PostgreSQL • MySQL • MongoDB • Redis • Firebase • Supabase • Elasticsearch • DuckDB • BigQuery • AWS (Lambda, EC2, S3, RDS, CloudFront) • Google Cloud Platform • Microsoft Azure • Docker & Kubernetes 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 • Flutter / Dart • React Native • Android (Kotlin & Java) • iOS (Swift, SwiftUI, Objective-C) I have developed mobile products including marketplaces, fintech applications, healthcare platforms, logistics solutions, AI-powered apps, fitness applications, and consumer applications published on Apple App Store and Google Play Store. 𝐀𝐈 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 & 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐭 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 • Generative AI Applications • Large Language Models (LLMs) • OpenAI GPT Models • GPT-4 / GPT-4o / GPT-4.1 APIs • Claude AI (Anthropic) • Google Gemini • Amazon Bedrock • LangChain • LlamaIndex • AI Agents & Agentic Workflows • Retrieval Augmented Generation (RAG) • Vector Databases • Pinecone • ChromaDB • Weaviate • AI Chatbots • AI Assistants • Natural Language Processing (NLP) • Machine Learning Integrations • AI Search Systems • Document Intelligence • AI Automation Workflows 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 & 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐏𝐫𝐨𝐜𝐞𝐬𝐬 𝐎𝐩𝐭𝐢𝐦𝐢𝐳𝐚𝐭𝐢𝐨𝐧 I build automation systems that reduce manual work and improve operational efficiency: • AI-powered workflow automation • Zapier Automation • Make .com (Integromat) • n8n Automation • API Integrations • CRM Automation • Data Processing Pipelines • Webhooks & Event-driven Systems • Email & Marketing Automation • Lead Generation Automation • Business Workflow Automation • Robotic Process Automation (RPA) • Custom Internal Tools • AI-powered Reporting & Analytics 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐁𝐮𝐢𝐥𝐝𝐢𝐧𝐠 𝐂𝐨𝐦𝐩𝐥𝐞𝐱 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐬 ✓ SaaS platforms ✓ FinTech applications ✓ Healthcare and Telehealth systems ✓ Logistics & Marketplace platforms ✓ Real Estate / PropTech solutions ✓ eCommerce ecosystems ✓ AI-powered analytics platforms ✓ Enterprise dashboards ✓ Customer management systems ✓ Subscription-based platforms ✓ Mobile-first consumer applications 𝐒𝐨𝐦𝐞 𝐞𝐱𝐚𝐦𝐩𝐥𝐞𝐬 𝐨𝐟 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 𝐈 𝐡𝐚𝐯𝐞 𝐝𝐞𝐥𝐢𝐯𝐞𝐫𝐞𝐝: • AI-powered market intelligence platforms using React, Next.js, Node.js, Python pipelines, OpenAI, Gemini, Claude and cloud infrastructure. • FinTech platforms supporting payments, subscriptions, settlements, corporate expenses and financial operations. • Logistics marketplaces connecting customers, vendors, drivers, and administrators through scalable web and mobile applications. • Healthcare platforms connecting users with care providers through secure applications and intelligent workflows. • SaaS products with multi-tenant architecture, role-based access control, integrations, and cloud deployment. 𝐖𝐡𝐲 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐜𝐡𝐨𝐨𝐬𝐞 𝐦𝐞: ✓ 13+ years of software engineering experience ✓ Full product lifecycle ownership; architecture to deployment ✓ Strong experience with startup MVPs and enterprise platforms ✓ AI integration expertise for modern applications ✓ Scalable backend and cloud architecture experience ✓ Clean, maintainable, production-ready code ✓ Business-focused approach, not just development execution If you need an experienced engineer who can transform an idea into a reliable, scalable, AI-powered product - I can help.
Ashar S. has worked .
Vaclav S.
$70/hr
$3K+ earned
Offers consultations
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SWISS-GRADE ARCHITECTURE FOR FLUTTER & SUPABASE Building a mobile app is easy. Building a mobile app that scales, handles data securely, and doesn't crash under load is an engineering challenge. I am a Senior Software Architect specializing in high-performance Flutter applications and Supabase backends. I bring 10+ years of experience in the Swiss banking and fintech sector to your project. WHAT I DELIVER: ► Security First: I implement strict Row Level Security (RLS) policies in Supabase to ensure your user data never leaks. ► Clean Code: I write strictly typed, modular code (Clean Architecture) that is easy for other developers to read and maintain. ► Performance: I optimize database queries and Flutter rendering to ensure great performance even on older devices. MY SERVICES: • Full-cycle Flutter App Development (iOS & Android) • Supabase Database Design & Optimization • Code Reviews & Security Audits • State Management Implementation (Riverpod / BLoC) If you are looking for a developer who values precision, communication, and long-term stability over quick fixes, let’s connect.