Hire the Best Devise Developers

🥇 Top 1% - Upwork Ruby on Rails & AI Solutions ✅ Expert in AI LLM OpenAI GPT ✅ Senior developer (10+ years experience) ✅ 50 completed projects & 9000 hours on UpWork! 🇺🇸 Work in PST/PDT time zone. Hi, 👋 I'm Alex! I've worked with dozens of Ruby on Rails applications, from small startups to huge production apps with millions of users. Included: SAAS, IAAS, marketplace, search engines etc. Also, I am an OSS contributor, maintaining RubyAI, kredis, cookies_eu, and other gems in the Ruby ecosystem. - Ruby and Ruby on Rails - JavaScript, React - Stimulus, Turbo, Hotwired - HTML, HAML, and HTML5 - PostgreSQL and MySQL for backend databases - Version control with Git and GitHub - SAAS, IAAS, eCommerce applications. - UX/design, SEO - DevOps (Hetzner, DigitalOcean etc)

I’m a Full stack Developer with 4+ years of hands-on experience building MERN applications and high-performance smart contracts. My specialty lies in Rust-based Solana development and Solidity for Ethereum and EVM-compatible chains. Key Highlights: - Handled an app with 5M+ active users - Built arbitrage contracts on Solana and real-time monitoring system - Developed airdrop distribution systems with Merkle Tree verification - Built bots on telegram and whatsapp - Proficient with Anchor, SPL tokens, and Solana SDKs. skilled in Solidity best practices including proxy patterns and contract upgradability 🧰 Tech Stack: Languages: Rust, Solidity, TypeScript Chains: Solana, Ethereum, Polygon, Arbitrum, BSC Frameworks: React.js, Next.js, Express.js, Anchor, Hardhat

👑𝗧𝗼𝗽 𝟭% 𝗘𝘅𝗽𝗲𝗿𝘁-𝗩𝗲𝘁𝘁𝗲𝗱 𝗧𝗮𝗹𝗲𝗻𝘁 | 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗡𝗼𝗱𝗲.𝗷𝘀, 𝗣𝘆𝘁𝗵𝗼𝗻 & 𝗙𝗮𝘀𝘁𝗔𝗣𝗜 | 𝗪𝗲𝗯 & 𝗠𝗼𝗯𝗶𝗹𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 I am an expert Full Stack Developer with over 12 years of experience in building scalable, high-performance web and mobile applications. With a deep understanding of modern frameworks and technologies such as Node.js, Python, and FastAPI, I have consistently delivered innovative solutions to complex challenges, working across the full stack to build end-to-end solutions. As a top 1% Expert-Vetted Talent, I’ve been pre-screened by industry professionals and talent managers to ensure I meet the highest standards of technical expertise and quality. Throughout my career, I’ve had the privilege of working in dynamic, high-impact roles at some of the most renowned tech companies, where I gained extensive experience in leading engineering teams and architecting advanced systems. 𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 1- 𝗦𝗲𝗻𝗶𝗼𝗿 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 Spearheaded large-scale, cloud-based software systems that supported Microsoft’s enterprise solutions, focusing on security, performance optimization, and user experience. Led cross-functional teams to implement key features for Microsoft Azure and Office 365. 2- 𝗦𝗲𝗻𝗶𝗼𝗿 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝗙𝗮𝗰𝗲𝗯𝗼𝗼𝗸 Contributed to the core engineering teams responsible for Facebook’s backend services, handling millions of active users and optimizing real-time data processing. Played a pivotal role in building scalable APIs, improving system performance, and enhancing user experience. 𝟯- 𝗟𝗲𝗮𝗱 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝗛𝗲𝗹𝗹𝗼𝗴𝗼𝘃 𝗔𝗜 Directed a team to build AI-powered government solutions, improving efficiency and accessibility for public services. Collaborated with stakeholders to design innovative features while ensuring system reliability and scalability. 𝗞𝗲𝘆 𝗦𝗸𝗶𝗹𝗹𝘀 & 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 1- Backend Development: Skilled in Node.js, Python, FastAPI, and Express.js for building scalable APIs and microservices. 2- Frontend Development: Experienced with React.js, Vue.js, and HTML/CSS for creating responsive web interfaces. 3- Mobile Development: Expertise in React Native and Flutter for cross-platform mobile app development. 4- Cloud & DevOps: Proficient in AWS, Azure, Google Cloud, Docker, Kubernetes, and CI/CD for scalable deployment. 5- Database Management: Strong in relational and NoSQL databases like PostgreSQL, MySQL, MongoDB, and Redis. 6- Agile & Leadership: Experienced in leading Agile teams, driving project success, and mentoring junior developers. 𝗙𝗹𝗲𝘅𝗶𝗯𝗹𝗲 𝗧𝗶𝗺𝗲𝘇𝗼𝗻𝗲 𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗶𝗹𝗶𝘁𝘆: I am comfortable working across a variety of time zones and can adapt to your team’s working hours, ensuring seamless collaboration no matter where you're based. Whether you need overlapping work hours or full-time availability, I am open to flexible arrangements that align with your team’s needs. 𝗛𝗶𝗴𝗵-𝗤𝘂𝗮𝗹𝗶𝘁𝘆, 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀: I have a proven track record of building high-performance systems that scale efficiently, ensuring long-term stability and performance. I am committed to delivering robust solutions that meet business goals while optimizing user experience. 𝗙𝗮𝘀𝘁-𝗣𝗮𝗰𝗲𝗱 & 𝗥𝗲𝘀𝘂𝗹𝘁𝘀-𝗗𝗿𝗶𝘃𝗲𝗻: I thrive in fast-paced environments and understand the importance of meeting deadlines without compromising on quality. I take a results-driven approach to development, always focusing on delivering value quickly and effectively. 𝗣𝗿𝗼𝘃𝗲𝗻 𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽 𝗮𝗻𝗱 𝗧𝗲𝗮𝗺 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝗼𝗻: Throughout my career, I’ve led multiple cross-functional teams, ensuring strong collaboration and clear communication at all stages of development. Whether working as a lead engineer or as part of a team, I take an active role in mentoring and guiding junior developers to achieve their full potential. 𝗜𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝘃𝗲 & 𝗖𝗼𝗻𝘁𝗶𝗻𝘂𝗼𝘂𝘀 𝗟𝗲𝗮𝗿𝗻𝗲𝗿: I am passionate about staying ahead of the curve in an ever-evolving tech landscape. My curiosity drives me to constantly explore new tools, technologies, and techniques, so I can apply the best possible solutions to each project I undertake. 𝗟𝗲𝘁’𝘀 𝗕𝘂𝗶𝗹𝗱 𝗦𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗚𝗿𝗲𝗮𝘁 𝗧𝗼𝗴𝗲𝘁𝗵𝗲𝗿! With expertise in Full Stack Development, cloud solutions, and Agile, I offer flexible timezone availability and a commitment to delivering high-quality, scalable applications, ready to collaborate and drive results. 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: Full Stack Developer, Senior Software Engineer, Node.js, Python, FastAPI, React.js, Web Development, Mobile Development, Backend Development, Frontend Development, Full Stack Architecture, API Development, RESTful APIs, Microservices, Cloud Computing, AWS, Azure, Google Cloud, Docker, Kubernetes, CI/CD, Continuous Integration.

I am an AR/VR Solution Architect and Idea Generator with 10+ years of hands-on experience creating immersive 3D, AR, VR, and real-time web solutions. My primary value lies in transforming raw ideas into clear, viable, and scalable technical concepts. I generate product ideas, define system architecture, choose the right technologies, and design the overall technical vision that turns concepts into real, working products. I stay personally involved in the most critical parts of implementation to ensure that the original idea is executed correctly and reliably. I specialize in projects where there is no ready-made solution and where strong architectural thinking is required — including AR/VR platforms, interactive simulations, digital twins, product configurators, and experimental real-time 3D applications. What you can expect: • Clear product and technical vision from the very first discussion • Thoughtful architecture built for scalability and long-term use • Hands-on implementation of core and complex components • Direct communication with the person responsible for technical decisions • Production-ready solutions, not just prototypes or demos Core expertise: AR / VR / XR • WebXR, 8th Wall, ZapWorks, Spark AR • Unity (C#): AR, VR, MR applications • AR Foundation, ARCore, ARKit, Vuforia, EasyAR • VR frameworks: XR Interaction Toolkit, VRTK, Oculus SDK Unreal Engine • Unreal Engine 4 / 5 (Blueprints & C++) • Real-time visualization and architectural walkthroughs • Interactive simulations and product configurators • CARLA Simulator for autonomous driving and simulation • Niagara VFX, Sequencer, Metahuman integration Web & Real-Time 3D • Three.js, A-Frame, PlayCanvas • WebGL, GLSL • React, Vue.js • Desktop packaging with Tauri and Electron Backend & System Architecture • Node.js, PHP, Laravel • MySQL, PostgreSQL, MongoDB • Docker, Nginx • API integration and system design How I work: I work directly with clients from the idea stage. I help shape the concept, define the architecture, validate technical assumptions, and personally implement or prototype the most critical parts of the system. My goal is to ensure that the final solution is technically sound, scalable, and aligned with the original vision. Typical use cases: • Turning early-stage ideas into technical concepts and prototypes • Designing architecture for complex AR/VR and 3D systems • Interactive simulations and digital twins • 3D product configurators and visualization platforms • Technical consulting and architecture reviews My goal is to help you move from an idea to a clear, technically grounded solution that can grow into a real product. Feel free to book a consultation to discuss your idea, concept, or technical challenge. Keywords: AR, VR, XR, WebXR, Unity, Unreal Engine, Three.js, WebGL, Simulation, Digital Twin, Product Configurator, Real-Time 3D, Interactive Visualization, ARKit, ARCore, Vuforia, Mixed Reality, Oculus, HTC Vive, HoloLens

I’m a Software/AI & VPS Engineer, I can fix anything with zero mistakes n build everythings easily n fastest, i got unlimited Codex token, love to do things OpenClaw, Blockchain, Pipeline, flutter, flutterflow, build tools, Internal tools, Modules, Bot, Mod, sys Linux n i can copy any site 100% match quick n easy n i strong in backend and full-stack systems and build Web apps, Mobile Apps, Desktop Apps, Rust/Tauri, Electron, Browser Extension n trading system, n strong Web3 edge (EVM, Stellar & Solana). I turn ambiguous ideas into secure, reliable, human-centered products using TypeScript/JavaScript, React/Next.js, Node.js/Nest, Go, Python, Solidity, Rust (Anchor), and modern infra. I care about clean architecture, measurable impact, and great developer experience (DX) also so features ship fast and safe, also love building an Apps & AI things. for the security side, I bring pentest/audit mindset to every build: threat modeling, fuzzing & invariants, automated checks in CI, and clear, actionable reports. I also provide English technical translation/localization for whitepapers, docs, and UI strings. Languages: TypeScript/JavaScript, Vue, Go, Python, Solidity, Rust (Anchor), Php, Ruby, C & C++ Frontend: React, Next.js, Tailwind, Radix/shadcn, Vite, SSR/SSG/ISR, Flutter Backend: Node.js (Nest/Express/Fastify), Go (Gin/Fiber), GraphQL, REST, gRPC, WebSockets Web3: Solidity, Rust/Anchor, Hardhat, Foundry, OpenZeppelin, viem/wagmi, ethers.js, WalletConnect v2, Safe, The Graph, IPFS Testing: Jest/Vitest, Playwright, Supertest, Foundry (fuzz/invariants), Slither, Echidna Data: PostgreSQL, MySQL, SQLite, Prisma/TypeORM/Knex, Redis DevOps: Docker, GitHub Actions, basic K8s, AWS/GCP basics, Sentry, OpenTelemetry, Tenderly, OpenZeppelin Defender Security: OWASP ASVS/API, RBAC/ABAC, token design, key/secret rotation, rate limiting & anomaly detection, audit reports DeFi staking: with upgradeable proxies storage-safe upgrades, 0 criticals in audit NFT marketplace royalty splits, subgraph indexing, gas-optimized listings Solana program PDA-secured escrow with CPI, wallet-adapter UX, >95% test coverage Payments & off-chain settlement Webhooks + queues, idempotent APIs, chargeback handling Security engagement BOLA/IDOR class bugs identified; implemented header-precedence fixes & authZ binding

🎯 Expert-Vetted Designer & Technologist (Top 1% on Upwork), Awwwards Jury Member and a Webflow Certified Partner with global experience helping agencies, studios, tech firms, startups, and brands create beautiful, functional, and scalable digital products - now also leveraging AI-driven design workflows to boost efficiency, insight, and innovation. I bring a rare combination of high-end visual design and robust front-end development, with a deep understanding of how to deliver engaging user experiences (UX) and intuitive user interfaces (UI) across websites, web applications, SaaS platforms, mobile apps, and product designs. My work blends creative direction and strategic thinking with technical expertise to deliver impactful results. ------- 💡 What I Offer From concept to execution, I support clients through a full spectrum of services: ✅ UX/UI Design – Websites, Web Applications, Mobile Apps, SaaS Platforms ✅ Web Design & Development – Responsive, SEO-friendly, conversion-driven digital experiences ✅ Branding & Visual Identity – Logo design, guidelines, brand books, and social media assets ✅ 2D/3D Motion Design & Animation – Animated storytelling through videos, using tools like Spline ✅ Graphic Design & Illustrations – Iconography, characters, editorial illustrations, and marketing assets ✅ Prototyping & Wireframing – Figma, Adobe XD for early validation and stakeholder collaboration ✅ Design Systems – Scalable, consistent systems across teams for seamless design handoffs ------- 🧠 Tech Stack & Development Expertise ✅ No-code: Webflow Certified Partner, and Framer ✅ Front-end: React.js, Next.js, Webflow, TailwindCSS, Framer Motion, GSAP, Ant Design ✅ CMS/Headless: WordPress, Shopify, Headless CMS (Sanity, Strapi, Contentful) ✅ Back-end: Node.js, PHP, Python ✅ Animation & Interaction: Lottie, SVG, WebGL, GreenSock ✅ eCommerce: Shopify, WooCommerce ------- 🏆 Highlights & Achievements ✅ Award-winning and expert-vetted, recognised as an Awwwards jury member evaluating the world’s best web experiences ✅ Trusted by agencies, studios, and tech consulting firms as their go-to white-labeled partner ✅ Led award-winning design and development projects across Europe, the US, and Asia ✅ Built and scaled a boutique team that delivers at the speed of top-tier agencies ✅ Projects featured on Awwwards, Behance, CSSDA, Product Hunt, and Muzli ------- 🌍 Who I Work With I collaborate with a wide range of clients (from creative agencies, design studios, marketing firms, startups, SaaS companies, tech consultancies, and enterprise teams), offering both direct project execution and white-labeled partnerships that seamlessly integrate into existing workflows. Whether you need one-off project support, a long-term partner, or an extension of your internal team, I adapt to your preferred work style. ------- ⚙️ My Workflow & Collaboration Style I believe great design and development is about more than pixels and code - it’s about clarity, alignment, and results. My process includes: ✅ Discovery & Strategy – Understanding your goals, challenges, and audience to define the right approach. ✅ Design Exploration – Creating moodboards, wireframes, and prototypes to align early with stakeholders. ✅ Agile Execution – Iterating quickly with transparency, detailed timesheets, and milestone-based reporting. ✅ Testing & QA – Ensuring performance, responsiveness, and accessibility across devices and platforms. ✅ Launch & Beyond – Supporting post-launch improvements, optimisations, and ongoing growth. ------- 📊 Industries & Verticals: My work spans tech, fintech, health, eCommerce, SaaS, education, lifestyle, and creative industries - helping clients solve capacity constraints, skillset gaps, and scaling challenges while maintaining award-winning quality. ------- 🤖 AI-Enhanced Design & Development I actively integrate AI-driven design workflows, automation, and research tools to accelerate delivery, improve insights, and help clients stay ahead in a fast-evolving digital landscape. This ensures faster iterations, data-informed decisions, and future-ready solutions. ------- 📌 Engagement Models I offer flexible collaboration modes to suit your needs: ✅ Ad-hoc hourly work (transparent timesheets and pre-approved hours) ✅ Project-based delivery (fixed scope and budget clarity) ✅ Retainers or ongoing partnerships (acting as your in-house design & dev team) ✅ Mix & Match models (customised plans combining different approaches for maximum flexibility) ------- ➡️ Let’s discuss how I can bring your vision to life.