I'm a developer with 5+ years of experience in Android native development. There are a lot of different applications in my portfolio: messengers, maps, e-commerce, media, IoT clients, business clients, and even games. Many of them work great and carry out their tasks, some of them have become one of the best in their field with hundreds of thousands of pleased active users. I experienced: - Android SDK - Java, Kotlin - Realm, SQLite, Room - Firebase - Dagger 2, Koin - RxJava 1, 2; Coroutines, Flow - OkHTTP, Retrofit, Smack (XMPP) - MVC, MVP, MVVM, MVI - Compose - Clean Architecture, SOLID, GoF, UDF, KISS, DRY и др - AndroidJetpack: Live Data, ViewBinding, Livecycle, Navigation и др. - Git, Github, Gitlab, Bitbucket, Jira, Trello, Redmine, Linux, Crowdin, TravisCI, GitlabCI, Jenkins, Postman, and other instruments Contact me if you want to make your application great!

Building SaaS and multi-tenant systems that scale without breaking later. I’m Muhammad Ahmed, a full-stack/platform engineer with 5+ years of hands-on experience shipping production-grade systems across backend, frontend, infrastructure, observability, and design-to-build workflows. I help teams move from “it works locally” to reliable production systems using Elixir/Phoenix, Next.js, Node.js, TypeScript, Figma, and modern DevOps/cloud tooling. What I deliver ✅ Full-stack SaaS development (React/Next.js + Elixir/Node backends) ✅ Multi-tenant architecture and secure auth flows (JWT/OAuth/OIDC) ✅ AI workflows, RAG, and support chat systems — retrieval, grounding, and production-safe integrations ✅ Performance-focused backend and database design ✅ CI/CD and deployment automation (Jenkins, GitHub Actions, Docker) ✅ Infrastructure support (OpenStack, Ceph, AWS) ✅ Monitoring and observability (Grafana, Prometheus, Netdata, Watchdog, Zabbix) ✅ Figma-to-production implementation (responsive UI systems and reusable components) ✅ Email and messaging infrastructure when needed Core stack Elixir, Phoenix, Phoenix LiveView, Next.js, Node.js, TypeScript, React, Figma, PostgreSQL, Docker, Jenkins, OpenStack, Ceph, AWS, Grafana, Prometheus, Netdata, Zabbix, GraphQL, Tailwind CSS I focus on clean architecture, maintainable code, and fast execution. Whether you need a blocker fixed quickly or a system built end-to-end, I deliver practical solutions you can s

Dear I am a passionate mobile developer with 5+ years rich experience. Before felling in love with mobile apps, I had worked extensively with Java, C++ to have a strong grip on OOP and design patterns. Worked in domestic/global app development teams during my last 5 years, gained rich experience and knowledge in mobile app development. My strong skills are + iOS 7,8 development(iPhone & iPad) + Swift; + Android 2.3 - 4.2 development; + GPS, Google Map, Location Tracking + Front end and Back end for mobile services on PHP, .Net, Parse; + Payment Gateway(Stripe, Paypal, Braintree) + XML, SOAP, RSS Feed + Social Networking (Facebook, Twitter, LinkedIn) + Github I can provide quick & quality result within your budget. My communication and working time will be flexible to meet your requirement. I will do my best in order to realize your ideas into life. Thanks.

I am senior developer having extensive 11+ years of rich experience in this technology world, with cutting-edge technology, utilizing strong implementation skills such as Java, J2EE, Spring, Hibernate, Kotlin and most importantly, Liferay 7.X and 6.X to drive results that transform corporate vision and strategy into profitability. Fully experienced with the planning, management. ★★ Experience and Expertise ★★ ♦ Built a music social network where users could create musical stories and share them with their followers. ♦ Led a small team of developers across native and back-end development, using agile methodologies. ♦ Interfaced with product and other executives to determine strategy and drive technical direction. ♦ Integrated data from multiple APIs including Facebook, Instagram, YouTube, Spotify, and Apple Music. ♦ Provided API development, DevOps, data harvesting, and search. ♦ Install and maintain the Splunk adds-on including the DB Connect, Active Directory LDAP for work with directory and SQL database. ♦Expert level programming experience in Spring Boot, Java Script, jQuery, RabbitMQ, Jenkins, Kubernetes Cloud. ♦Experience in application server Spring Framework(5.2.7), APACHE-TOMCAT 7.0,Java J2EE(1.8+) ,JBOSS 4.2.2 and IDE such as Eclipse ♦ Experience using build tool MAVEN and GRADLE. ♦ Efficient to work independently or as part of a team. ♦ Analytical, adaptive and quick learning ability for new technologies ♦ Strong defect analysis, debugging and problem solving skills with excellent understanding of problem analysis methodologies, techniques and tools. ♦ Experience in version control tools like GIT, SVN (SUBCLIPSE 1.8 and Tortoise), GIT Ext. ♦ Familiarity with common stacks and databases (SQL Server, Oracle, DB2, PostgreSQL) ★★ Expertise in Liferay ★★ ♦ Liferay 7 (Community)/DXP Customization ♦ Liferay Environment Setup ♦ Liferay 7/DXP Theme Development ♦ Liferay addon Development with the old version ♦ Enterprise Portal Solutions ♦ Content Management Solution ♦ SSO with Liferay ♦ Liferay integration with LDAP, CAS, keyclock ♦ Liferay Portal Performance tuning ♦ Liferay migration and upgrade ♦ Liferay workflow management ♦ Liferay Elastic search integration ♦ Liferay clustering ♦ Amazon web services ♦ Maintenance and Support for the existing system ♦ Liferay Portal 5/6/7+ (portlets, hooks, themes, ext, setup, integrations) ♦ Payment Gateway Integration with Java/Liferay application ★★★ Technical Skills ★★★ ♦ J2EE, S, Spring Boot, Java Script, query, RabbitMQ, AWS, Cloud foundry, Jenkins, Cabernets Cloud, Lightweight Directory Access Protocol (LDAP), ♦ IDE: Eclipse, Oxygen.3a Release (4.7.3a) ♦ Framework: Struts 1.1, Spring 4, Hibernate 5, Spring boot 1 ♦ Web Technologies/ Development: JSP, query, Servlets, Java Script, Web Services, HTML, AJAX, Angular Js ♦ Application/Web Server: APACHE TOMCAT 7.0, JBOSS 4.2.2 ♦ Database: MySQL5.5, Oracle 11g, Cassandra 3.11.2 ★★★ Expertise in Android ★★★ ♦ Programming language : Java, Kotlin ♦ Web Service : XML/JSON, REST/SOAP ♦ Networking Library : AFNetworking/Alamofire, Fast-Android-Networking ♦ JSON Parser : Android-JSON parser ♦ Chat and Messaging Engine : Twilio, XMPP, Quickblox, OpenFire ♦ Video/audio/Image processing : GPUImage, CoreAudio, AVFoundation, EZAudio ♦ Social integration : Facebook, Twitter, Spotify, SoundCloud, Deezer, Instagram ♦ Geolocation : Google Map, Open Street Map, GPS, MapKit, Mapbox ♦ Source Control : google svn, collabanet, git, bitbucket ♦ Payment Gateway : stripe, authorise.net, billdesk and more... Would be happy to discuss your requirement. Thank you for your time to read my profile. Thank you.

💎🏅TOP-RATED 💎🏅7+ years of experience💎🏅5-star service💎🏅$65k+ Earning💎🏅Upwork verified💎🏅100% customer satisfaction 7+ years of Mobile App Development experience with proficiency in developing cross-platform mobile apps using Flutter and React Native. I have recently started using Xamarin (C#, .NET) as well to build amazing mobile apps as per the client's requirements. I am an enthusiastic, dynamic, result-driven, and self-sufficient Mobile App Developer with highly-transferable, broad technical skills, having strong professional skills in Cross-platform app development as well as Native development. My Skill Set: ✔ Flutter, Dart, BLoC, Cupertino, Material Design, Flutter Studio, FlutterFlow ✔ React Native, React Navigation, React Native Router Flux as navigation solutions, GEO Location, TOffline data sync ✔ Xamarin, Xamarin.Forms, Xamarin iOS, Xamarin Android, C#, .NET ✔ Android app development using Kotlin and Android Java, Android SDK, SQL, SQLite, Tablet applications, Google Play/Playstore Services ✔ iOS app Development using Swift and Objective-C, iOS SDK, CocoaTouch, CocoaPods, iPad/iPod/WatchOS/WearOS, Appstore services ✔ Android Studio, Xcode, Visual Studio Code, IntelliJ IDEA, AppCode ✔ Skilled at building beautiful apps with creative UI fast and easy with Flutter’s innovative method of widgets and libraries. ✔ HTML, CSS, JavaScript, Figma, Adobe XD, Photoshop, Prototyping ✔ Updating or fixing existing applications, feature enhancement, maintenance, and project management ✔ Knows upsides and downsides and best practices of using React Native as well as Flutter ✔ Implementing mockups in mobile applications. ✔ AR & VR ✔ MVVM, MVC, MVP architecture patterns ✔ API design & development, Rest APIs, and integration of various APIs from third parties. ✔ I specialize in React Native using Redux and have developed complex features like React Native animations, GEO Location, Offline data sync, etc. ✔ GitHub, Bitbucket, GitLab, Jira, ASANA, Trello, Slack ✔ Online Video Calls implementation, Jitsi, and Twilio Customisation ✔ Firebase SDK (Authentication, Storage, Notifications, Analytics, etc) ✔ Worked with XMPP protocol to develop chat application (Messaging (XMPP)) ✔ Navigation: react-navigation, react-native-navigation, react-native-router-flux

Are you looking to optimize your online store, automate critical workflows, or scale your digital commerce platform? With over 18 years of hands-on experience, I specialize in designing and developing enterprise-grade eCommerce ecosystems and business automation solutions that deliver measurable results. ✅ What I Do Best: Custom Online Stores & B2B Commerce Platforms CRM & ERP Implementation and Customization End-to-End Business Process Automation I bring deep expertise across industry-leading technologies, including Magento 2, Frappe Framework, Salesforce Commerce Cloud (Demandware), Shopify, Zoho CRM/Creator, and more. 💡 Key Outcomes I Deliver: Streamlined business operations Improved customer experience Scalable digital platforms Measurable growth in sales and ROI 📌 Selected Project Highlights: *Magento Migration & ERP Integration: Migrated 10,000+ SKUs from Magento 1 to Magento 2, with custom shipping logic and seamless ERP synchronization. *Shopify Plus Development: Built a feature-rich Shopify Plus storefront for a US-based apparel brand with a custom bundle builder and loyalty rewards system. *Zoho CRM Automation: Deployed Zoho CRM with dynamic lead scoring, pipeline automation, and behavioural email tracking to improve sales team performance. *Salesforce Commerce Cloud Development and Plugin: Created a real-time inventory sync plugin for multi-channel retail sales using Salesforce Commerce Cloud and migrated the Enterprise Store from PHP to Salesforce Commerce Cloud. *Global Multi-Store Magento Architecture: Implemented multi-regional Magento stores with localized catalogs, currencies, and dynamic pricing models. *Frappe + Shopify Integration: Led a team to successfully migrate a complex, multi-store dropshipping platform from PHP to Frappe ERP. Developed a custom OMS and integrated multiple APIs for seamless operations. 🚀 What I Offer: Custom eCommerce architecture for B2B/B2C Seamless platform migrations & performance tuning CRM-driven automation and internal tool development Scalable solutions for retail, manufacturing, fashion, and services 🔧 Tech Stack Expertise: Platforms: Magento 2, Shopify, Salesforce Commerce Cloud, Zoho, Frappe Framework Languages & Tools: Python, JavaScript, PHP, REST APIs, MySQL, PostgreSQL Frameworks & Services: ERPNext, Shopify Apps, Zoho Creator, AWS, Docker Let’s collaborate to build future-ready, intelligent digital solutions that scale with your business. I make technology work smarter for growth.

📈 5000+ hours of work at Upwork! 💎 Top Rated Plus Freelancer (Top 3% on Upwork) ⚡ Job success score 100% ⭐ 5-Star ratings across all projects 💼 8+ years of experience 🚀 10+ completed projects and 0 negative feedback Here are just a few of my clients' testimonials: ⭐⭐⭐⭐⭐ "Maqsood was the best full stack contractor I have ever worked with on Upwork. From our company profile you can see that we have used over 30. His work was exemplary and he always delivered more then was expected. We will hire him again we when get to the next phase of our external development." ⭐⭐⭐⭐⭐ "It was a pleasure to work with Magsood. Maqsood kindly and patiently made sure I knew what was going on, and that I could give him everything he needed to proceed. He sent screen recordings and screengrabs to clarify things for me. Maqsood's trust in me was heartwarming, and he offered helpful advice about staying safe online when working with contractors. He went out of his way to save me spending unnecessary money, and pushed on with the job even though some unexpected technical difficulties arose that were the result of me not having the right set-up on my side. Maqsood kept me in touch with how things were unfolding, and was responsive to my questions. He completed the job long before it needed to be completed. He was calm, kind, generous, patient, knowledgeable and hardworking. Thank you, Maqsood!" 🚀🚀🚀🚀🚀 "I have worked with Maqsood for almost a year now. He is a very hardworking, professional, and skilled full stack engineer. He communicates and works very well with local and remote teams. When Maqsood first joined our team, he was able to contribute immediately, owning front end re-architecture work as well as developing new product features. He was leading vendor integration work and proactively researching and proposing best solutions. He will be a very valuable asset to any company." These are the companies in which I worked. 1. W3bVolution:- Built custom applications using SharePoint, Power Apps (Canvas, Model-Driven), Power Pages, and Dataverse; developed reusable PCF components, notification and scheduling using PowerAutomate, integrated Microsoft Graph API, and implemented Power BI dashboards. (2 years).. 2. Waitless.ai:- Worked with Co-Founder to develop frontend app components waitless restaurant management system using Typescript, React, and Redux ( 5 months ) 3. Microcasting:- Worked with a senior developer to develop a CMS system using React, Mobx state tree, Storybook, and Appsync GraphQL. ( 8 months ) 4. AmeraIOT:- Worked with a team to develop an online virtual office using React, Redux, Jitsi, Python Falcon Api, and chat messaging using XMPP. ( 1.5 years) 5. Livepin:- Worked with CEO to develop/fix live broadcasting feature to platforms like Facebook, Youtube, Twitch, and Twitter using techs like React, Redux, AgoraIO, and AWS lambda API. ( 1.5 years ) 6. SchoolEverywhere:- Developed virtual classroom application using React, Redux, Node, and Jitsi. 7. SAS technologies:- Worked onsite for about 1 year to develop a social media platform using React, Redux Node, and Kurento Media server for video calling. Thanks.

Development of high-quality android applications from simple client-server apps to computer vision and augmented reality. Using: - Kotlin, Java; - Third-party REST API integration with Retrofit; - AR experience with ARCore; - Computer vision with OpenCV library

Latest Update 5 Dec 2025. Frontend/Backend Developer || Upwork Top Rated || 100% Job Success Score -- UI/UX, Website Design, Graphic Design. -- Website Development - PHP, WordPress, woo-commerce, Shopify 2.0, Shopify Custom Theme, Theme installation and customization, PSD to Shopify, Apps configuration, setting up Sales and marketing channels, etc. -- HTML, HTML5, CSS, CSS3, SCSS, SASS, Jquery, Javascript, Bootstrap 4 and Bootstrap 5. I'm excellent in UI/UX, Graphic Designer, Website Design and Website Development with more than 8+ years of extensive experience. I have expertise in Website Designs, Mockups, UI/UX, Designing Apps, Product banners, promotional stuff, and brand identity with Graphics from the ground up. Apart from that, I have redesigned & re-branded existing websites & apps to improve visitor engagement and conversions. -- 8+ years of experience in UI/UX, Website Design & Website Development, WordPress, Shopify theming and PHP frameworks Development -- 100% Job Success -- Money-Back Guarantee -- 100% Client Satisfaction My work instruments for Website Design Tools -- Adobe Photoshop, Adobe XD, Figma, Adobe Illustrator My Expertise: Shopify, Shopify 2.0, Shopify basic/Plus -- Shopify store development, theme installation, and customization -- 3rd Party APIs integration, CRM Integration, Email automation and Marketing tool integration (e.g., Klaviyo, Omnisend, Conversio), Payment gateway integration, Accounting tool integration (Quickbooks, Freshbooks, ERP, Zoho, Xero), POS systems integration, Order automation, Shipping company tool integration, and any 3rd party tool integration. -- PSD, Adobe XD, Sketch, Figma, Invision to Shopify conversion -- Custom Theme development (Private or Shopify) -- Shopify Frontend/Backend Development -- Customized Shopify cart and Dynamic checkout. -- Redesigning Shopify stores. -- Migrate website in Shopify -- Writing custom code and features. -- Chat support: Twilio, XMPP, Quick box, OpenFire integration -- Social integration: Facebook, Twitter, Spotify, SoundCloud, Deezer, Instagram PHP, WordPress/WooCommerce Expertise: -- WordPress/WooCommerce development -- WordPress Theme Development and Customization. -- Custom WordPress website design and Development -- Plugins Installation, Configuration, and Development -- Complex Funtions and Short-codes -- WooCommerce store development and Customization. -- APIs integration with WordPress/WooCommerce -- PSD, Adobe XD, Sketch, Figma, Invision to WordPress conversion Pixel Perfect, mobile first. -- Codeigniter -- php, Core php WordPress Page Builder Expertise: -- Expert in Elementor, Divi, Gutenburg, Beaver Builder, Visual Composer, wpbakery, Themify Builder etc... Graphic Designing Expertise: -- Web Design -- Banners Design, Product Designs, Promotional eCommerce stuff, and Marketing campaigns Landing pages and Email Templates. -- Mobile App screen Design -- Google Ads, Facebook Ads, Instagram, and other Ads design. -- Brochures, Flyers, Business cards, Cards, and Invitations -- E-card Design -- Flyer Design, Business Cards, Letter Heads, eBook covers, and Books. Design and other skills: -- Good understanding of UI/UX design. Understanding of the product and its constraints. -- Vast experience with creating Wire-frames, Product designs, Branding, and other promotional stuff for eCommerce startups as well as running business. -- A conceptual thinker with a keen visual awareness having excellent problem-solving skills and an eye for detail. -- Good understanding of typography, color theory, and iconography. I have a good knowledge of the design guidelines and principles. -- An aptitude for using a logical, step-by-step approach to ensure designs are user-friendly and simple for end-users. -- Effective communication skills to liaise with team members and clients to ensure that high-quality end-user designs meet customer requirements. -- Open, flexible, and adaptable mindset to cope with a rapidly changing set of tasks in an area of emerging, new technologies. -- Quickly adapt to any project management or communication tool which you using in your workflow. In using the latest tools and techniques. I provide creative solutions for the visual needs of businesses & individuals. I believe everything can be beautiful, and most often the best solution is a simple one. I believe every person has value, and I try to bring that into my work. Everyone's needs & solutions are different. You're unique, and your graphics should be too. A selection of my projects can be viewed on my Portfolio page. One thing you should know about me is that I only take on a job when I am confident that I will do the job. I'm working in USA timezone 7 days in week. I am flexible with different time zones to make sure my clients don't have any communication problems. Hire me on Upwork TODAY! Regards, Mohd Ifzan

Hello, Maulik this side I've experience of 6+ years in Mobile + Web application development . I've been coding apps for various local and online clients. During the last 6+ years, I have developed many different types of iPhone, iPad, Android applications. E.g. social networking app, dating app, chat app, car rental app, food delivery app, shopping app, e-commerce app, fitness app, video/photo app, business apps, and enterprise apps. ==) Why you should hire me? ✔ I believe in WIN-WIN situation for all ✔ Strong Android/iPhone architecture and database knowledge ✔ Develop applications that support all devices ✔ I am as passionate about your project as you are ✔ Delivering product on/before time ✔ Good Quality of work ✔ Always up-to-date with the latest technology ✔ Less hourly rate than others My core skills and experiences in Android and iPhone applications development are: ✔ Interaction with backend - Restful / JSON / XML / PHP / .Net ✔ Databases / Data Management - SQLite / MySQL / Parse / SQL ✔ Social Integration - Facebook / Twitter / Google+ / Youtube / Instagram / Linked In / Vimeo / Pinterest ✔ Chat - XMPP / Quickblox ✔ Version Control Tools - Github / SVN ✔ Google Maps / Apple Map kit / Geolocation / GPS / Location Tracking ✔ Audio / Video Live Streaming ✔ Parse / Firebase ✔ Augmented Reality ✔ P-a-y-p-a-l / Braintree / Stripe / Square Payment Gateway ✔ QR Codes, Bar Codes, VIN Scanner, NFC Tags Reading ✔ In-App Purchase / Advertisement / Push Notifications / GCM / Google Analytics ✔ Photo & Video Sharing / Editor / Filter