I'm a software and hardware development executive who has worked across a variety of industries as well as disciplines such as embedded software, native application development, operating systems, product development, electrical engineering and more. Because of the breadth of experience I bring a syncretic viewpoint to new projects that leads to innovative, intuitive, and cutting edge software. Whether it is designing a fully autonomous racing drone complete with soft real time Linux OS, microcontroller based firmware, or IoT manufacturing and provisioning systems hosted in Azure (complete with IoT Hub and IoT Central connectivity), I'm capable of just about everything with regards to modern embedded software needs. I even have extensive experience with React.js and all aspects of frontend development - I'm is a true full stack developer in the full sense of the word - from hardware all the way through OS, embedded applications, and finally modern, single page frontends. Languages: C, C++, C#, Python, JavaScript, Various assembly (x86, ARM, MIPS), Powershell, BASH, Tcl Platforms: Linux, AWS, Azure, STM32, AVR, Android, iOS, many more (just ask!)

Full Stack / Mobile Developer | React Native, Expo, Firebase, Automation Hands-on developer and operations-minded builder focused on mobile apps, backend workflows, API integrations, and business process automation. I bring 10+ years of systems implementation and to add operational leadership, with practical experience turning product ideas into working software. Born 1994 - Monterrey, Nuevo Leon PROFESSIONAL PROFILE I work best on practical software projects where the goal is not only to write code, but to understand the workflow, define the states, connect the services, and deliver something people can actually use. My background combines full stack mobile development, process automation, e-commerce, systems implementation, and client-facing execution. Technical Areas and Project Capabilities FIREBASE / GOOGLE CLOUD * Hands-on work with Firebase projects, Firestore data models,

Hello! I'm Alex, a full stack blockchain developer with expertise in smart contract development, bot creation, and front-end integration. Here are some of the skills I bring to the table: Bot Development I’ve built custom bots to monitor DeFi positions, track NFT ownership, and automate transactions across EVM-compatible chains. Smart Contract Development I’ve written, tested, and deployed smart contracts for DeFi protocols, NFT projects, and custom dApps. NFT Projects I've successfully launched multiple NFT projects, handling everything from metadata creation to deployment.​ Front-End Integration I am experienced with ethers/web3.js, and can seamlessly connect smart contracts with front-ends. Technical Consulting I’ve helped dev teams troubleshoot complex issues and keep projects moving efficiently. My goal is to understand your problem and work with you to deliver a clean, effective solution. Looking forward to working together, Alex

The NBA, Stanford, Harvard, and Comcast have used products I've worked on. At MoxiWorks (400k users), I helped rearchitect and ship an AI-powered CRM for Real Estate brokers in the US and Australia. I've been building products for more than 10 years and 6,000+ hours on Upwork alone. 𝗪𝗵𝗮𝘁 𝗜 𝗱𝗲𝗹𝗶𝘃𝗲𝗿 𝗮𝗻𝗱 𝗵𝗼𝘄 𝗶𝘁'𝘀 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁 I build production-ready web applications using React, NextJS/TanStack, MongoDB/Vector DBs, and AI integrations, such as Retrieval-Augmented Generation (RAG) pipelines, Generative features, Support chatbots, Multi-Agent workflows, and Evaluations. Usually, that means taking something that already works and making it more stable, faster, safer, nicer to use, or easier to build on top of. And when needed, I can architect end-to-end solutions for brand-new products and MVPs. I own the entire delivery process - architecture, planning, implementation, deployment, and post-launch stabilization. Additionally, I'm heavily focused on product integrity and project success. Working with me, you can expect a clearly defined scope of work in an agile manner (Roadmap, PRDs, epics), before any development begins. And once it starts, you'll get a clear picture of day-to-day progress and regular updates. 𝗪𝗵𝗮𝘁 𝘆𝗼𝘂 𝘄𝗶𝗹𝗹 𝗴𝗲𝘁 - Live product that is serving your users and works according to your business-driven specs - Production-ready codebase that follows industry's best practices, guidelines and security guidelines - AI-powered development setup (Code automation scripts, Agentic loops, Skills) - CI/CD pipeline for automated builds, tests and deployments - Observability and monitoring - Project and code documentation - Hand off documentation 𝗛𝗼𝘄 𝘁𝗼 𝘀𝘁𝗮𝗿𝘁 Invite me to your job post - usually, I respond within 24 hours or less. Or book a 30-minute architecture call to map out the scope before committing P.S. I'm currently in Vancouver, Canada (PST). And here's my preferred tech stack: AI / LLM: - Anthropic Claude, OpenAI, Gemini, TanStack AI / Vercel AI SDK, - LangChain, MCP, Langfuse, MLflow, RAG/vector: - pgvector, Atlas VectorDB, Databricks, Frontend: - TypeScript, React, NextJS (App + Pages Router), TanStack Start, - Vite, Turborepo - TanStack Router / Query / Form, - React Hook Form, Tailwind, shadcn/ui, Backend: - Node, Fastify, Express, GraphQL, - Python / FastAPI, Zod Databases: - MongoDB, PostgreSQL (pgvector, RLS), Supabase, - Drizzle ORM, sqlalchemy Real-time: - WebSockets, Socket io, WebRTC, Mediasoup Monitoring: - Sentry, Langfuse, PostHog, Mixpanel

Hey! My name is Alexander Zayek, and I'm a seasoned voice over artist that's recently brought my talents over to Upwork! I've worked with the likes of Pizza Hut, Ortovox, and more and would love to lend my voice to your project. Send me a message and we can work out the details so we can bring your project to life!

Hello 👋 I'm a react native engineer (web & mobile), addict to type safety and functional programming. Author of react-native-permissions, react-native-localize, react-native-bootsplash, etc. In love with simple concepts and readable code.

I'm a developer with rich experience in building mobile app and websites for business or individual. * I'm experienced in Swift / Objective-C and React native. * I’ll fully project manage your brief from start to finish

I help businesses build scalable websites, mobile apps, and custom software that improve operations and drive growth. My experience spans frontend and backend development, database design, API integrations, and server management. Core Skills: - React Native & Mobile App Development - HTML, CSS, Tailwind CSS & JavaScript - Node.js, REST APIs & MySQL - WordPress & WooCommerce Development - Custom Business Automation & Integrations - VPS, Linux & Cloudflare Management I've developed e-commerce platforms, wholesale ordering systems, inventory synchronization tools, mobile applications, and custom business solutions for growing companies. My focus is delivering reliable, scalable, and maintainable solutions that solve real business problems.

Long history in Windows application development in a network environment. Small applications to whole ERP systems. In the past 5 years also have experience in Mobile app development for Android and iOS, Web development and cloud hosting of related services.

25 years of experience in startups and industry giants, in games, telecom software, digital signage, web applications, desktop applications, and mobile applications. Expert in Ruby on Rails, React, Vue, Svelte, Tailwind. Knowledge of different APIs: AWS, Facebook, Google, Paypal, Mailgun, SendinBlue, etc. Used to work with multinational talents. Can speak French and English.