I have 6+ years of software engineering exprience working primarily as a React/Typescript Web Engineer. I’ve worked to multibillion dollar companies like Turo and Manscaped. I also have some experience with mobile development (I released an app on the App Store for Android and iOS using Flutter for a recent client, and some backend experience at Manscaped at well. Anything software related I can pretty much figure out given enough time. I’m passionate about building amazing products and I value also providing great customer service. Whether you need a website, mobile app, backend app, or desktop app, I can build it. I’m definitely the most experienced in web but I can learn anything. Expertise: React, TypeScript, HTML, CSS, JavaScript, motion.js, Redux, Jest, Mocha, Chai, Node, NPM, Motion, Responsive design, REST, Accessibility Proficient; Graph QL, Supabase, Firebase, NestJS, Shopify, Liquid, SEO , Playwright, Tailwind CSS, NextJS, Vercel Serverless, MongoDB, Mongoose, Express, Flutter, Dart, SvelteKit, Cypress, Wix Prior Experience: MySQL, React Native, Handlebars, Vue, NestJS, SEO, PostGres, Python, C++ , Wordpress, PHP

I am a mobile engineer and technical lead with over 10 years of experience bridging engineering, product, and customer-facing roles. I have successfully built SDKs, designed multi-tenant delivery infrastructures, and shipped more than 150 mobile apps for enterprise and B2B clients, often representing the technical voice alongside founders and C-level leaders. My experience includes eight years of fully remote work, collaborating with diverse teams to translate customer needs into effective solutions. I excel in solutions architecture and mobile platform engineering, and I am equally comfortable writing code, developing systems, and driving cross-functional collaboration. If you're looking for a seasoned professional who can provide technical insights and deliver robust mobile solutions, I would love to discuss how I can contribute to your project.

What My Clients Say "Working with Mo was the best experience I have had on UpWork-BY FAR... I gave him a task, and he knew exactly what to do; he was done quickly and delivered perfectly. I would HIGHLY recommend these services for ANY of your website or coding needs!" "If there is a sentence to define Mohamed is only this one: "The best in his field". I have been working with more than a dozen developers, but nobody, absolutely nobody, is as intelligent, thoughtful, attentive to one's needs, patient, creative, and the most amazing professional as he is. Whatever he asks, he is 10 times worth it. No doubt." "MO is a great guy and an outstanding programmer. He completed this relatively complex project ahead of schedule with super clean and efficient code. His response time is excellent and his English is flawless. I thoroughly enjoyed working with him and look forward to our next project together." Rapid Software Development for Your Success 19+ years of experience and a proven track record delivering high-quality software solutions in a wide range of disciplines, from legacy systems to cutting-edge AI and Blockchain technologies. I tackle projects of all sizes, ensuring rapid development and efficient results that save you time and money. Unparalleled Expertise and Fast Learning: • Deep understanding of software engineering principles and methodologies. • Extensive experience in various programming languages, frameworks, and platforms. • Proven ability to quickly grasp new technologies and adapt to changing requirements. • Meticulous attention to detail and a commitment to delivering quality work. Your Partner in Success: • Collaborative approach that prioritizes clear communication and understanding your needs. • Creative problem-solving and innovative thinking to deliver optimal solutions. • Proactive identification and mitigation of potential risks, safeguarding your project from failure. • Full transparency and regular updates to keep you informed every step of the way. Let's collaborate and turn your vision into reality. Contact me today to discuss your project and discover how I can help you achieve your goals. Your success is my success, MO P.s For reference: Skills include but are not limited to: • Software Development Methodologies: Agile, Iterative Lean Approach, Kanban, RAD (Rapid Application Development), Scrum, Waterfall • Programming languages: Assembly, C, C++, C#, CSS, Dart GoLang, HTML, Java, JavaScript, Kotlin, Python, PHP, Rust, SQL, Typescript • SDKs & Frameworks: AngularJS, CakePHP, Django, Django REST Framework, ElectronJS, Flask, Flutter, Jupyter Notebook, Laravel, Node.js, NumPy, Plotly, ReactJS, SciPy, Symphony PHP, Vue.js, Zend Framework, .Net • Databases: Amazon Aurora, Amazon DynamoDB, Amazon SimpleDB, Cassandra, Couchbase, Elasticsearch, etcd, Firebase Realtime Database, Google Big Query, MariaDB, Memcached, Microsoft Access, Microsoft Azure SQL Database, Microsoft SQL Server, MongoDB, MySQL, Neo4j, PostgreSQL, Redis, Solr, Sphinx, SQLite • Platforms: BigCommerce, Ecwid, Magento, Magento 2, OpenCart, PrestaShop, Shopify, Squarespace, Wix, Webflow, WooCommerce, WordPress • Tools: Ansible, Apache Kafka, Apache Spark, Bitbucket, Confluence, cPanel, Docker, Git, GitHub, GitLab, Google Data Studio, Jenkins, Jira, Kibana, Kinesis, Kubernetes, OpenApi, Puppet, RabbitMQ, SQS, Swagger, Trello, WHM • Software Architectures patterns/types: Asynchronous messaging, Client-Server, Cloud Computing Pattern, Event-Driven, Microservices, Monolithic, MVC, Peer-to-Peer, Plug-ins, Publish-Subscribe, REST • Deployment models/targets: AWS, Cloud, DigitalOcean, Google Cloud Platform, Heroku, Hosted, Hybrid, Metal Servers, Microsoft Azure, On-Premise, C.I, C.D • Operating Systems: alpine, Android, CentOS, Chrome OS, Debian, iOS, Mac OS, Ubuntu, Windows 10, Windows Server • Recent Technologies: AI, Big Data, Blockchain, Data Engineering, ML - Supervised, ML – Unsupervised • E-business & E-Marketing related: Autoresponders, Affiliate Networks, Facebook Business Suite, Google Ads, Google Analytics, Google Insights, Google Tag Manager • Others: Automation, Google Workspace (G Suite), JSON, Shell/Bash Scripts, UI design, UX design, YAML

I build AI features that survive contact with production — voice agents, RAG chatbots, LLM automation — and the full-stack product around them. 20+ years shipping, Top Rated, solo end-to-end. I don't just write code. I help you figure out what's worth building, then build it fast enough to test before your runway shrinks. Most projects fail not because of bad code, but because nobody proved the idea was worth building — months of development, polished UI, then silence. I've seen it, and I build to avoid it. My approach: understand the problem → ship a working product in 2–4 weeks → measure → iterate. No 50-page specs, no months of "discovery." A real product real people can use and pay for. I work best with founders and solo entrepreneurs who need one person to own the whole product — first sketch to production. Design, frontend, backend, AI, infrastructure: I handle the full picture so you can focus on your business. One hire instead of a team, no designer-to-developer handoff eating the budget. What I build: → AI-powered products: chatbots, real-time voice assistants, RAG search over your own docs, automation, speech-to-text/text-to-speech with voice cloning → SaaS platforms & MVPs: auth, payments, dashboards, analytics — complete and production-ready → Internal tools & automation: data pipelines and operational utilities that cut hours of manual work to minutes → IoT & real-time systems: sensor data streams, live dashboards, thousands of events per second → Mobile apps (Flutter) and everything in between A few things I've shipped: → A multilingual voice agent answering local-government questions — 2,600-page knowledge base, full-duplex live audio, deployed on Google Cloud → A computer-vision pipeline pulling barcodes out of warehouse videos — fine-tuned YOLOv11, async API, real-time web UI, one-command deploy → Engineer on a US company's product stacks for 10+ years, here on Upwork — trusted with everything from the database to the servers How we'll work: short call/chat → I propose the smallest version that proves value → working prototype in days → production hardening (tests on the money paths, monitoring, backups) → iterate on real usage. I communicate proactively, in writing, with demos. I focus on building new products, instead of babysitting someone else's abandoned code. And I started as a systems/network admin back in 2006 — which is why "can you also handle the server / the DNS / the weird hardware?" is always yes. Got an idea? Message me a couple of sentences about it and I'll reply with a concrete plan soon.

President of Wilky Consultants Inc. 40 Solid Yrs of IBM, Apple, Microsoft and Technology Related IT Experience and most recently AWS Cloud Services Expertise AWS - let me help you bridge your IT to cloud computing and save slot of money Cyber security (vulnerability analysis/patching automation for Unix/Windows) Software development - python, Dynamic Web sites, Machine Learning, AI Scripting - python2/3, ksh, bash, perl, javascript, html, vb script, CGI gateway, Web Scraping Office - MS Office, Excel, Project, Visio, Powerpoint Database - MySql, Oracle, MS SQLserver, MS Access, SQLite3 Web Servers - Apache, IIS OS support - Linux(many flavours), Unix(AIX, HPUX, Solaris), Ubuntu, MacOS, Windows, IOS, Android Hardware - Intel, AMD, M1, iPhone, iPad, Samsung Tablets, Raspberry Pi (1/2/3/4) Very fast learner with 40 years of hands on experience. And much more, just ask! All initial consultations are always free, first job is free!

Technical Director | Multiplayer & AI Solutions Architect Bat Cave Studio LLC I lead technical strategy and client solutions at Bat Cave Studio LLC, helping studios and startups architect and deliver scalable Unity applications across Mobile, WebGL, and VR. With over 8+ years of experience, I specialize in real-time multiplayer infrastructure, backend system design, and AI-powered interactive applications built for production environments. My expertise includes: • Real-time multiplayer architecture using Photon (PUN, Fusion, Quantum) and Mirror • Authoritative server systems and scalable networking design • Matchmaking, ranking systems, spectator modes, and synchronization optimization • WebGL multiplayer deployment • VR multiplayer integration (Meta / Oculus Quest) • AI-powered NPC systems and dynamic dialogue • LLM integration and procedural content systems • Backend architecture using Node.js, Firebase, and PlayFab • REST API and WebSocket integration • Clean, modular, and scalable C# architecture I approach every project with a systems mindset, focusing on scalable architecture, clean modular design, and long-term maintainability. At Bat Cave Studio LLC, we engineer production-ready multiplayer and AI-driven solutions — not experimental prototypes. If you are building a serious Unity-based multiplayer or AI-powered product, let’s discuss how to structure it properly.

Overview: With over 8 years of experience as a Senior Frontend Developer, I specialize in crafting cutting-edge web and mobile applications that drive measurable business impact. My expertise lies in React, React Native, and TypeScript, complemented by a proven track record of leading high-performing teams and delivering scalable, user-focused solutions. I take pride in creating intuitive, high-performance applications that not only meet business goals but exceed user expectations. Whether it's spearheading SaaS platform development, scaling mobile solutions, or implementing CI/CD pipelines for faster delivery, I am committed to delivering excellence. What I Bring to Your Project: ✅ Frontend & Mobile Development: Expertise in React, React Native, Next.js, and iOS (Swift UI). ✅ State Management: Advanced proficiency in Redux, Context API, and custom solutions. ✅ Backend Knowledge: Familiarity with Node.js, NestJS, MongoDB, and PostgreSQL. ✅ CI/CD Pipelines: Proficient in AppCenter, FastLane, and automated deployment strategies. ✅ Code Excellence: Deep understanding of clean code principles, reusable components, and optimized workflows. ✅ Testing & Monitoring: Skilled in testing frameworks (Jest, Detox, Mocha) and tools like Sentry, Hotjar, and Mixpanel. Key Achievements: ✨ Team Leadership: Successfully led teams of up to 8 developers, ensuring timely and high-quality project delivery. ✨ Scalable Solutions: Developed reusable components and streamlined workflows, improving development speed by 50%. ✨ Business Impact: Improved platform reliability, user acquisition, and delivery rates across multiple organizations. ✨ Client Success: Played a pivotal role in client acquisitions by delivering innovative solutions like Cognna's proprietary threat detection system and Gokada’s pioneering SuperApp. Notable Projects: 🚀 Busha Business SaaS Platform: Spearheaded frontend development for a B2B SaaS project, establishing robust workflows and delivering user-friendly solutions. 🚀 Cognna Threat Detection Web App: Led the development of pre-release and pilot versions, contributing to client acquisition success. 🚀 Gokada SuperApp: Enhanced delivery rates and reduced order cancellations by introducing innovative solutions and CI/CD pipelines. 🚀 Woll Access Control Solution: Built a modern, simplified access control tool for early-stage software projects. Tools & Technologies: Frontend: React, React Native, Next.js, JavaScript (ES6+), TypeScript. Backend: Node.js, NestJS, MongoDB, PostgreSQL. DevOps: Git, Gitflow, AppCenter, FastLane, Xcode, Gradle. Testing: Jest, Detox, Mocha. Monitoring & Analytics: Sentry, Hotjar, Mixpanel, Google Analytics. Why Work With Me? I am passionate about innovation, user-centric design, and delivering measurable results. I thrive on solving complex challenges and take a proactive approach to every project, ensuring your vision becomes a reality. Let’s collaborate to build something exceptional! Certifications: 🎓 Triplebyte Certified Frontend Engineer 🎓 English Proficiency - C2 (Emerson) Education: 🎓 BSc in Computer Science (4.61/5.0, Honors) - Landmark University, Nigeria Availability: I am open to both short-term projects and long-term collaborations. Let’s discuss how I can help take your project to the next level.

Hi, I'm Guillaume, from France. With over 13 years of experience in IT in various IT consulting companies specializing in Microsoft technologies, I have built up a robust and reliable technical background. I have worked alone and in a team, with CI/CD best practice tools and code reviews. I love building dekstop and mobile application, beautiful UI and seemless UX. I published several application on Store (iOS, Android & Microsoft) by my own, and for customer. Let discuss about your project :)

I help companies stabilize, modernize, and extend complex Android applications. With 15 years of professional Android experience, I specialize in Kotlin, Jetpack Compose, application architecture, SDK integration, and legacy modernization. I can join an existing Android project, understand its architecture quickly, identify the actual technical risks, and deliver improvements without unnecessarily rewriting the application.

We help founders and teams build and launch mobile apps that actually ship. Whether you’re starting from scratch or picking up an existing project, our team takes full ownership and moves things forward. We handle everything needed to get your app live—so you don’t have to worry about the technical side. We specialize in building high-quality iOS and Android apps using Flutter. From frontend to backend, we cover the full development cycle, so you don’t need to manage multiple developers. We also take care of deployment, App Store and Google Play submissions, and everything required to run your app smoothly in production. Our experience includes MVPs, subscription-based apps, real-time systems, location-based features, Bluetooth integrations, and AI-powered functionality. We focus on clear communication, fast execution, and solving problems—not just writing code. What we typically help with: Turning ideas into fully launched apps Building and shipping MVPs quickly and efficiently Subscription systems and payments (Stripe, RevenueCat) Real-time features and backend architecture Maps, GPS, and location-based functionality AI integrations App Store & Google Play deployment Tech we use regularly: Flutter, Supabase, Firebase, PostgreSQL, REST APIs, RevenueCat, Stripe, Mapbox, OpenAI We’re a great fit for founders building MVPs, startups that need to move fast, and teams looking for a reliable development partner who takes ownership and delivers results. If you’re serious about building or launching your app, send us a message—we’re happy to jump on a quick call and discuss your project.