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Expert in relational database systems, especially PostgreSQL (Supabase, Amazon Aurora/RDS, Azure Hyperscale/CosmosDB/Citus, postgREST, RPC, RLS, timescaledb, PostGIS), MS SQL Server, and MySQL, with more than 27 years of experience as a database architect, designer, developer, and administrator. I’m also a software developer with 37 years of experience in many platforms, programming languages, and database systems. Expert in all of the following: * database installation, configuration, optimisation, securitisation, backups, performance improvement, encryption. * database design, SQL code optimisation, indices optimisation, coding stored procedures, increasing performance and security, partitioning. * data quality, de-duplication, normalisation, AI-assisted enrichment. * single and multi-tenant systems, JWT authentication, RLS authorisation. * REST and RPC functions, Edge/Lambda functions, Webhooks, AI APIs, Realtime, migrations. * database conversion or migration (e.g. to/from noSQL or JSON stores), interfacing with other databases, importing and exporting data, interfacing with online services (pl/perl, C, C#) * hot/cold backup and restore, recovery, replication (master/slave or master/master), mission critical * encryption in transit and/or at rest; encryption of data for authorised access only * text-file data extraction, formatting, conversion, archival, clean-up. Databases: PostgreSQL, SQL Server, MySQL, D3/Pick, Oracle, NexusDB, DB2, SQLite, COBOL, MongoDB, BerkeleyDB, Informix, Access, InterBase, Paradox, DBase/Clipper/Fox (DBF), CSV and plain text. Expertise with UAT/development/test environments, Regular Expressions (regex), batch and shell scripting, sed and other text processing tools, Excel, SOAP and web services, networking tools, and many programming languages (including Delphi, C/C++/C#, Perl, PHP, Smalltalk, Java, JavaScript, Python, and more). I can provide training and consultancy.

❤️ With Proof, 𝟐𝟑+ React Native 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩𝐬 & 𝐖𝐞𝐛 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 delivered to 𝐔𝐒𝐀, 𝐔𝐊, 𝐆𝐞𝐫𝐦𝐚𝐧𝐲, 𝐔𝐀𝐄 Startups with React Native Mobile Development |𝟏𝟐+ 𝐘𝐞𝐚𝐫𝐬 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 Mobile App Developer | 𝟑𝟎𝟎+ 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐞𝐝 𝐚𝐬 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐋𝐞𝐚𝐝 in React Native | iOS & Android Development | Cross-Platform Mobile Apps | Full-Cycle Mobile App Development | Backend & API Integration | Mobile App Architecture | 𝟏𝟎𝟎% 𝐔𝐩𝐰𝐨𝐫𝐤 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 React Native Developer I am a Senior React Native Developer and Mobile App Developer with 12+ years of experience delivering high-performance, scalable mobile applications for iOS and Android. I specialize in React Native mobile app development, cross-platform mobile apps, and full-cycle mobile app development that ensures apps are production-ready, stable, and long-lasting. I have successfully worked with clients ac As a React Native Mobile App Developer, I focus on React Native mobile app development for iOS and Android, cross-platform solutions, clean architecture, and optimized performance. I have delivered 23+ mobile apps and completed 300+ projects, consistently maintaining a 100% Job Success Score, making me a trusted React Native Developer for any mobile app development project. React Native Mobile App Development Expertise I provide React Native mobile app development services for iOS and Android, including: Cross-platform mobile app development using React Native Native iOS and Android mobile apps with optimized performance Modular and reusable components for scalable app architecture Secure API integration and backend connectivity Real-time chat, notifications, and offline synchronization App Store and Google Play publishing with long-term maintenance I deliver robust, user-friendly, production-ready mobile applications for startups and businesses worldwide. Primary Industry Focus (SEO Optimized) As a React Native Mobile App Developer, I have built apps across main industry sectors, including: Sports & Fitness Mobile Apps – workout tracking, training programs, athlete management Healthcare Mobile Apps – clinic management, wellness apps, patient-ready solutions E-Commerce Mobile Apps – shopping apps, product catalogs, online marketplaces Mobile & General Business Apps – productivity, booking, task management apps Logistics, Tracking & Supply Chain Apps – fleet tracking, delivery monitoring, route optimization Dating & Social Apps – user interaction, messaging, content sharing, community platforms All apps are built using React Native mobile app development best practices, ensuring performance, scalability, and seamless cross-platform functionality. Technical Stack & Skills React Native Developer (Primary Expertise) Mobile App Development (iOS & Android) Cross-Platform Mobile App Development JavaScript & TypeScript Backend Development (Python, Django, FastAPI) REST API Development & Integration Firebase Services, Push Notifications Payment Gateway Integration (Stripe, PayPal, Braintree) Real-Time Chat & Data Sync Offline Mode, Smart Data Caching, and Performance Optimization I bring deep technical expertise to every React Native project, from concept and prototyping to deployment and post-launch support. Development Process 1️⃣ Planning & Architecture Mobile app architecture with React Native Scalable cross-platform design Performance-first UI/UX 2️⃣ Development & Implementation Modular, reusable React Native code API integration and backend connection Performance optimization and maintainable repository standards 3️⃣ Deployment & Optimization App Store & Google Play submission Crash monitoring, analytics, and performance tuning Long-term scalability planning and technical support Why Work With Me 12+ years of professional mobile app development Delivered 53+ mobile apps and completed 300+ projects Maintained 100% Job Success Score on Upwork Extensive international client experience (USA, UK, UAE, Germany) Clean code, scalable architecture, and long-term maintenance Transparent communication, project ownership, and reliable delivery I don’t just build apps — I engineer production-ready mobile solutions that engage users, scale seamlessly, and drive growth. SEO Keywords (Algorithm Optimized) React Native Developer Mobile App Developer React Native Mobile App Development Cross-Platform Mobile App Developer iOS Android App Development Hire React Native Developer Mobile App Development Services React Native Developer iOS Android Cross-Platform App Development Mobile App Development Expert Ready to Build Your Mobile App? If you are looking to hire a React Native Developer, Mobile App Developer, or Cross-Platform App Developer for iOS and Android, I am ready to turn your mobile app idea into a fully functional, production-ready, and scalable mobile application. Let’s connect and create a mobile app that delights users.

With nearly 30 years of experience working across every IT platform, from MS-DOS, Novell Netware, Windows NT ... to every major platform on-premise and in the cloud today, there is not much I haven't worked with. I am a software developer who crossed over into hardware, then network engineering and administration. I work predominantly in cloud computing and datacentre’s space; this gives me the ability to understand how the software integrates into the hardware and network platforms very well. As CEO of my UpWork agency, vCloud Group - Global Cloud Services, I tend to work in all areas of Information Technology and Communications. Anything from desktop and workstations, to server systems, running Exchange, SQL Server, Oracle, Azure Integration, and system services like Disaster Recovery / Business Continuity, Multi-Site Cloud Networks and VoIP-based phone system. I am always working with my team to find the best possible solution for a client; I am not scared to advise you of a better solution that I believe you deserve or do better with. We have had several clients who started with one solution, then ended up with a better solution that exceeded their expectations. My experience has allowed me to work in areas: • IT systems and management, • technical support, and • project management. My focus areas on UpWork are: • Building of dedicated cloud networks in all major data centres, • VMWare vSphere/ESXi Hypervisor 5, 5.5, 6, 6.5, 6.7, 7.0, • VMWare vCenter 5.0, 6.0, 7.0, • VMWare Horizon View 4, 5, 6, 7, 8 all versions, • Microsoft Windows 10/11 all versions, • Microsoft Windows Server 2012/2016/2019/2022 all versions, • Linux all versions, • Dedicated Hosting Server i.e., cPanel/WHM, Plesk, CyberPanel, • Hosting Migrations from/to cPanel/WHM, Plesk or CyberPanel, • System Migrations, on-premise, cloud or hybrid (both), • Email Migrations (Google, Office 365 Migrations, and any to any), • VoIP Phone Systems, built-in any datacentre worldwide • All backup solution software on-premises or in the cloud. I am more than happy to discuss and look at projects first before accepting a contract; I ask many questions, and I double-check and follow up on everything I do. I hope to work with you soon.

Hi, I'm Melissa—a detail-driven and dependable data entry expert who delivers high-quality work on time, every time. I take pride in being thorough, accurate, and committed to client satisfaction. Whether it's organizing spreadsheets, formatting documents, or conducting web research, I make sure no detail is overlooked. ✨ What I Offer Data Entry (Online/Offline) Excel Data Entry & Spreadsheet Management PDF Conversion & Creation (Forms, Fillable PDFs) Lead Generation & Web Research Document Formatting (Word, Excel, PDF) Virtual Assistance (Email Handling, Admin Tasks, Calendar Management) File Organization & Data Cleaning 💡 I’m a fast learner with a passion for acquiring new skills and adapting to client needs. If you're looking for someone who can streamline your workflow and take care of time-consuming tasks with precision—I’m here to help. Let’s connect and create something awesome together.

Hello! 👋 I'm a versatile and results-driven professional with over 6 years of experience delivering high-quality services in Virtual Assistance, Website Development, Web Administration, and IT Support. My goal is to provide reliable, efficient, and personalized support to help you streamline your workflow, enhance your online presence, and keep your systems running smoothly. Whether you're a small business owner, an entrepreneur, or a growing company, I offer a comprehensive skill set to meet your diverse needs. Let's work together to bring your vision to life, improve your operational efficiency, and tackle any technical challenges. My Services Include: 1. Virtual Assistant Services: Email Management & Customer Support: Organize, prioritize, and respond to emails; provide customer service via chat or email. Scheduling & Calendar Management: Book appointments, meetings, and events; send reminders and ensure time-zone coordination. Data Entry & Research: Accurate data entry, product research, market research, and more. Document Management & File Organization: Organize files, create templates, and maintain data integrity. Task & Project Management: Manage tasks and deadlines using tools like Trello, Asana, or ClickUp. 2. Analyze, Automate, and Optimize your business processes With over 4+ years of experience in IT and data-driven solutions, I specialize in leveraging Power BI, Microsoft Azure, and other enterprise tools to deliver scalable, secure, and insightful solutions. Whether it’s data visualization, cloud infrastructure, system integration, or process automation, I help businesses transform raw data and IT systems into actionable insights and reliable performance. 🔑 Core Skills: Power BI – dashboards, DAX, KPIs Azure – AD, Data Factory, VMs, storage Databases – SQL, PostgreSQL Automation – Power Automate, Python, APIs DevOps – Azure DevOps, CI/CD Tools: Power BI | Azure | SQL | Power Automate | GitHub | Excel 3. Website Development: Custom Website Design & Development: Build responsive and user-friendly websites using HTML, CSS, JavaScript, WordPress, and Shopify. Landing Pages & Sales Funnels: Create high-converting landing pages to boost your conversions and sales. E-commerce Setup & Management: Set up e-commerce platforms like WooCommerce, Shopify, or Wix and manage product listings. Website Redesign & Optimization: Redesign outdated sites and optimize them for speed, SEO, and mobile responsiveness. 4. Web Administration: Content Management Systems (CMS): Administer and update websites on platforms such as WordPress, Joomla, and Drupal. Website Maintenance: Regular updates, backups, plugin/theme updates, and security monitoring. Domain & Hosting Management: Configure domains, hosting services, and email accounts. SEO Optimization: Implement SEO strategies to boost website ranking and visibility in search engines. 4. IT Support: Technical Troubleshooting: Resolve technical issues related to software, hardware, and network. System Setup & Configuration: Set up computers, software, and networks for smooth operation. Software Installation & Updates: Install software, ensure compatibility, and keep your systems up-to-date. Data Backup & Security: Assist with data backup solutions and implement basic cybersecurity measures. Why Choose Me? Professional Expertise: I am committed to staying up-to-date with the latest technology trends and best practices to provide you with top-notch services. Attention to Detail: I focus on delivering quality work that exceeds your expectations, from small tasks to large projects. Proactive Communication: I believe in clear, open communication and will keep you updated at every step of the process. Flexible & Reliable: I adapt to your workflow and deadlines, ensuring you get the support you need, when you need it. 100% Client Satisfaction: Your satisfaction is my top priority. I work closely with you to understand your needs and deliver tailored solutions. Tools & Technologies I Use: Website Development: WordPress, HTML/CSS, JavaScript, Shopify, Wix, Elementor, WooCommerce. Project Management: Trello, Asana, ClickUp, Monday.com. Communication Tools: Slack, Zoom, Microsoft Teams, Google Meet. File Management: Google Drive, Dropbox, OneDrive. Technical Support: Remote desktop tools (TeamViewer, AnyDesk), troubleshooting tools, VPN setup.

I have more than 8 years of ITES experience technology. I am able to do all Data entry/research/comparison/survey and other internet related work. I have expertise in excel, word, ppt and internet. I am working as freelancer for full/part time and committed to deliver the result on/before time. I have been in ITES industry for since last 8 years thus know about project importance and their delivery schedule. I am looking forward to work with all of you and expect good business relationship for long term.