Hire the Best Mobincube Specialists

I'm Yassine, an open source contributor and a dedicated developer with expertise in Software Development, IoT, Embedded Systems, System Configuration, Networking, Web Development With a strong passion for learning and applying new ideas. Top notch Skills: - Raw: DevOps, Embedded System, IoT, Web Development - Programming Languages: Rust, C/C++, Python, Bash, Lua, Nix, JavaScript/TypeScript - OS: Linux (NixOS) - Frameworks: React, NextJS, Docker, kubernetes, Tokio(Rust) - Cloud: AzureCloud If you found the skill you're looking for, don't hesitate to contact me!

Top Rated Plus | 100% Job Success | Ruby on Rails Expert | Sharetribe | Shopify | DevOps I'm a Top Rated Plus Ruby on Rails Full Stack Developer specializing in Sharetribe marketplace development, Shopify custom apps & themes, and scalable SaaS platforms. With 100% Job Success and $40K+ in delivered projects, I help businesses build, launch, and scale production-grade web applications. Whether you need a Sharetribe marketplace customized, a Shopify store built from scratch, an MVP launched fast, or a complex Rails application maintained and scaled — I deliver clean, production-ready code with reliable deployments. 🔧 What I Build: • Sharetribe Flex & Go — Custom marketplace development, transaction flows, payment integrations, and platform customizations • Shopify — Custom Liquid themes, private/public apps, GraphQL & REST API integrations, headless commerce • Ruby on Rails Applications — SaaS platforms, APIs, admin dashboards, multi-tenant systems, e-commerce • React.js & Vue.js Frontends — SPAs, interactive dashboards, Hotwire/Turbo integration • Flutter Mobile Apps — Cross-platform iOS & Android applications • DevOps & Cloud — Docker, CI/CD pipelines, AWS, Oracle Cloud, zero-downtime deployments ⚙️ Core Technical Skills: • Ruby on Rails 5–7 (Expert) — ActiveRecord, Sidekiq, Redis, ActionCable, Hotwire • PostgreSQL — Query optimization, database design, performance tuning, Supabase • React.js, Vue.js, JavaScript/TypeScript, Node.js, React.js • Shopify Liquid, Shopify APIs (GraphQL & REST), Shopify App Development • Sharetribe Flex SDK, Sharetribe Go Customization • REST & GraphQL API Development • Stripe, PayPal, and payment gateway integrations • Docker, AWS (EC2, S3, RDS), Heroku, CI/CD, Nginx, Puma • Decidim open-source platform customization • Git, RSpec/Minitest, TDD 🏗️ Specialized Experience: • Sharetribe two-sided marketplace development & customization • Shopify custom theme and app development • SaaS & multi-tenant application architecture • Legacy Rails upgrade (Rails 4/5 → Rails 7) • API integrations and third-party service automation • Performance optimization — slow query fixes, caching, background jobs • Full DevOps — server setup, deployment automation, monitoring ✅ Why Clients Choose Me: • Top Rated Plus — Top 3% on Upwork • 100% Job Success Score — Every client satisfied • $50K+ delivered on Upwork with excellent reviews • Full-stack ownership — I handle frontend, backend, database, and deployment. No coordination overhead • Fast turnaround — Available 30+ hrs/week, 0-4 hour response time • Clean, maintainable code — Tested, documented, built for production from day one 💬 Ready to start? If you need a Sharetribe marketplace customized, a Shopify store built, an MVP launched, or a Rails application fixed and scaled — invite me to your project or message me directly. Free consultation for all new clients.

I am a Mechatronics and Embedded Systems Engineer with 5+ years of experience in designing and developing industrial, IoT, and embedded solutions. I specialize in firmware development, embedded Linux, RTOS, C/C++/Python programming, and electronics integration. I help startups and innovators turn ideas into fully functional, sellable products, guiding projects from concept to prototype to production. My expertise spans microcontroller programming, PCB design, sensor & actuator interfacing, and high-performance system integration. Whether it’s an industrial automation system, wearable IoT device, or robotics project, I combine hardware and software skills to deliver reliable, efficient, and market-ready solutions. - Programming & Embedded Systems: C/C++17, Embedded C, Python, Rust, RTOS, AUTOSAR, Linux/QNX embedded, device drivers, multithreading - Microcontrollers & Boards: ARM Cortex-M (Tiva C, STM32, NUCLEO), AVR (ATmega), PIC, ESP32/ESP8266, Arduino, Raspberry Pi, Jetson Nano - Communication & Protocols: UART, SPI, I2C, CAN/CAN FD, LIN, Ethernet/UDP, Modbus RTU/TCP, I2S - Hardware & Electronics: PCB design (Altium, Proteus), sensor & actuator interfacing, DC/Stepper/Servo motor control, power management, control systems, signal conditioning - Tools & Simulation: Bazel, Git, MATLAB scripting, Simulink, Ansys, VREP, ROS, OpenCV, dlib, LabVIEW

Professional Summary: Over 20 years of experience with GNU/Linux distributions and 10+ years delivering custom enterprise IT solutions. For the past 5 years, I have specialized in the architectural design, deployment, maintenance, and monitoring of on-premise infrastructures, managing complex networking and critical self-hosted services to ensure corporate data sovereignty. I approach every deployment not only from the software layer, but with a deep understanding of the underlying physical hardware and network topology. I have a proven track record of absolute long-term reliability and multiple client rehires, including over 1,200 hours on a single continuous contract. My technical and strategic focus prioritizes security, system resilience, and the automation of operational processes to minimize risk and optimize infrastructure costs. Areas of Expertise & Tech Stack: Bare-Metal Management & Virtualization: Deployment, configration, thermal optimization, and administration of high-performance servers. Stack: GNU/Linux (Debian, Ubuntu, Archlinux), Proxmox VE, Unraid, VMware ESXi, Qemu/KVM. Advanced Networking & Perimeter Security: Design of secure topologies, VLAN segmentation, traffic optimization, and failover/load balancing strategies in remote or hard-to-reach environments. Stack: Mikrotik (RouterOS), pfSense, OpenWRT, WireGuard, OpenVPN, Tailscale, Zerotier. Container Orchestration & CI/CD: Microservices architecture and pipeline implementation to automate the software lifecycle. Stack: Docker, Docker Compose, Portainer, Gitea Actions, Sonatype Nexus. Data Sovereignty & Enterprise Self-Hosting: Deployment of private solutions under strict privacy regulations and proactive monitoring. Stack: Gitea, Nextcloud, Bitwarden, Vaultwarden, Alloy, Prometheus, Loki, Grafana. Business Continuity & Disaster Recovery: Design of automated and immutable backup architectures. Stack: BTRFS, AWS S3, Backblaze, Restic. Centralized Authentication (SSO): User management, permissions, and integration across on-premise, hybrid environments, and corporate domains. Stack: OpenLDAP, Active Directory, MS Entra. Key Achievement: Disaster Recovery Under Extreme Conditions During the onset of the 2022 geopolitical crisis, a physical data center was trapped in an active conflict zone in Eastern Europe, facing an imminent risk of destruction without prior warning. I planned and remotely executed the emergency migration of the entire infrastructure to Hetzner cloud within 7 days, while the hardware was being dismantled on-site under the constant threat of bombardment. I improvised a temporary network topology and a high-availability cluster with minimal downtime. The Result: Zero loss of corporate data. Months later, after the hardware was extracted across international borders, I remotely coordinated the re-architecture, the physical hardware deployment, and the data repatriation to a new, secure data center within the European Union. Available Services: I am open to working as an independent consultant or integrated into your team in the following capacities: • Planning, deployment, and configuration of new on-premise or hybrid infrastructures. • Maintenance, scaling, improvement, and migration of existing infrastructures. • Technical resolution of complex issues and security audits. • Long-term B2B strategic consulting. My goal is to provide a robust technological foundation that allows your resources to scale without compromising performance, stability, or information security.

I build mobile apps that scale, retain users, and generate revenue not just apps that ship. I'm proud to be part of Toptal's Top 3% developer network, and one of the production apps I've worked on has surpassed **5M+ downloads**. I have hands-on experience in app monetization, performance optimization, Play Store/App Store releases, and building reliable mobile experiences at scale. I'm also an active member of the developer community with **5,449 Stack Overflow reputation** and **280+ answers**, where I enjoy helping developers solve real-world engineering challenges. With **10+ years of experience**, I've built mobile applications across **Android, Flutter, iOS, React Native, Kotlin Multiplatform (KMP), BLE, IoT, and POS solutions**. I've delivered banking applications, healthcare platforms, AI-powered products, wearable and connected-device solutions, POS and payment applications, video streaming platforms, chat systems, and enterprise applications used by thousands to millions of users. Beyond mobile development, I specialize in **Bluetooth Low Energy (BLE)** communication, wearable device integration, companion apps, IoT connectivity, firmware-to-mobile communication, real-time data synchronization, offline-first architectures, OTA firmware update workflows, secure device provisioning, and **POS terminal integration**, including payment workflows and peripheral device connectivity. ## WHAT I BUILD ✓ Android Apps (Kotlin, Java, Jetpack Compose) ✓ Flutter Apps ✓ iOS Apps (Swift, SwiftUI) ✓ React Native Apps ✓ Kotlin Multiplatform (KMP) ✓ BLE & IoT Applications ✓ Wearable & Connected Device Solutions ✓ POS & Payment Applications ✓ Companion Apps for Smart Devices ✓ AI-Powered Mobile Applications ✓ Chat, Messaging & WebRTC Video Calling ✓ Fintech & Banking Solutions ✓ Healthcare & Telemedicine Apps ✓ OTT & Video Streaming Platforms ✓ SaaS & Enterprise Applications ## BLE, IoT & POS EXPERTISE ✓ Bluetooth Low Energy (BLE) Communication ✓ GATT Services & Characteristics ✓ Device Pairing & Provisioning ✓ Wearable Device Integration ✓ Smart Home & Connected Devices ✓ POS Terminal Integration ✓ Payment Device Connectivity ✓ BLE Reconnection Strategies ✓ Background Synchronization ✓ OTA Firmware Updates (FOTA) ✓ Sensor Data Processing ✓ Real-Time Device Communication ## MONETIZATION & DEPLOYMENT ✓ App Monetization Strategy (AdMob, Ad Revenue Optimization) ✓ App Store & Play Store Release Support ✓ CI/CD & Release Management ✓ Performance Optimization for High-Download, High-Retention Apps ## TECH STACK Kotlin • Jetpack Compose • Flutter • Swift • SwiftUI • React Native • Kotlin Multiplatform • BLE • IoT • POS • WebRTC • Firebase • GraphQL • REST APIs • Supabase • AWS • Room • SQLDelight • Coroutines • Hilt • MVVM • MVI • Clean Architecture ## WHAT CLIENTS GET ✓ Fast Development ✓ Clean, Scalable Architecture ✓ Daily Communication ✓ Long-Term Support ✓ Production-Ready Code ✓ BLE, IoT & POS Integration Expertise ✓ App Store & Play Store Release Support Whether you need a new mobile app, a senior engineer to rescue a struggling project, build a BLE-enabled wearable solution, integrate connected devices, develop a POS application, or scale an existing product, I can help. Let's build software that users love and products that stand the test of time.

Hi, I'm Al Fahad — a passionate Full Stack Developer with over 5 years of hands-on experience in mobile app development, cross-platform architecture, and smart software systems. I come from an engineering background, currently pursuing my BSc in Electronics and Communication Engineering at KUET, and I’ve turned my love for coding, electronics, and design into a full-time professional journey. 🧰🧰 You can directly check my portfolio items, they are all real life projects and the reviews of all the works are also attached with them. All the people were very satisfied. Take a look without a delay. During the pandemic, I dived deep into Data Structures and Algorithms, building a strong foundation in core computer science concepts and problem solving. Since then, I've worked on countless personal projects to sharpen my skills, then moved on to freelance platforms where I delivered quality solutions and earned great client reviews. ⚙️ What I Do I specialize in cross-platform development across mobile, web, and desktop — ensuring smooth, high-performance user experiences, scalable backends, and efficient system automation. Whether it's a business app, a startup prototype, or an embedded IoT system — I bring both technical depth and creative thinking to the table. 🧠 My Core Skills 🔹 Mobile & Frontend Development: Flutter, React Native, Jetpack Compose Win32 API, .NET, Custom UI systems 🔹 Backend Development: Node.js, Django, Flask Firebase, REST APIs, Websockets 🔹 System & Automation: Linux system administration (Ubuntu, Debian) Advanced scripting and automation in Python Bash scripting, DevOps fundamentals, Docker 🔹 UI/UX & Design: Figma, Penpot, Adobe Illustrator, Photoshop Clean, modern, and responsive interface design 🔹 IoT & Embedded Systems: Arduino, Raspberry Pi, ESP32 Microcontroller programming, sensor integration 🔹 Others: WordPress site development Web scraping, task automation, OpenWRT router customizations 🧰 Notable Projects ✅ Flutter based Event Management app with advanced UI/UX and API integrations ✅ Cross-platform Location Tracking app using React Native + Node.js + Firebase full stack ✅ Automation script in Python for scraping and data processing ✅ OpenWRT-based custom router system testbed development ✅ Branding and logo design for a martial arts company 🌟 Why Work With Me? ✅ Deep Technical Knowledge: I don't just "make it work" — I understand the how and why behind the code. ✅ Full Stack Confidence: I can build your entire system from frontend to backend to deployment. ✅ Passionate and Self-Motivated: I truly love what I do, and it shows in my work and dedication. ✅ Great Communication & Freelance Experience: You’ll find me reliable, easy to collaborate with, and open to feedback. ✅ Try Before You Hire: I’m confident in my skills — feel free to send a small task to test me before committing. 🎯 Let’s Build Something Great If you're looking for a reliable full stack engineer who can confidently deliver across mobile, web, desktop, and IoT — you’re in the right place. I’m open to both short- and long-term projects, and always excited to bring new ideas to life. Feel free to reach out — I’d love to learn about your project and see how I can help!