Hi, I’m Faizan 👋 Senior .NET Developer, C# Specialist, & Full-Stack Web/SaaS Engineer with a proven track record of delivering scalable, secure, and high-performance solutions for startups, growing businesses, and enterprise systems. With 7+ years of hands-on experience in .NET application development, I design and build end-to-end platforms—from robust backend architectures using C#, .NET Core, .NET Framework, and ASP.NET MVC to modern web applications, desktop solutions, and integrated AI agents. I ensure every application is optimized for performance, deterministic security, and long-term reliability. 🚀 𝗠𝘆 𝗖𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: .NET Backend & API Development: Expert design of RESTful APIs, ASP.NET Web API, and C# Microservices using modern .NET environments and legacy .NET Framework architectures. Full-Stack Web Development: Clean, responsive frontends built for .NET web projects using React, Next.js, Angular, TypeScript, JavaScript, jQuery, and CSS / Tailwind CSS. Desktop Application Development: Engineering robust Windows App Development solutions using WPF, XAML, and .NET Framework WinForms connected to secure Microsoft SQL Server databases. High-Performance SQL Databases: Advanced database programming, database design, and strategic query optimization utilizing Microsoft SQL Server, SQL, PostgreSQL, and MySQL. Cloud DevOps: Full cloud orchestration and Microsoft Azure Developer deployment (Azure App Services, Azure Functions, Azure Service Bus) engineered for .NET cloud systems. AI & Workflow Automation: Advanced AI Agent development and AI code generator orchestration leveraging the OpenAI API, Claude, and n8n pipelines within .NET ecosystems. SaaS & Enterprise Solutions: Multi-tenant C# SaaS architectures built with .NET and integrated with third-party APIs (DocuSign, Jira, Document AI, Stripe, Twilio). 💼 𝗜 𝗖𝗮𝗻 𝗛𝗲𝗹𝗽 𝗬𝗼𝘂 𝗪𝗶𝘁𝗵: Custom SaaS Product & Web Application Development: Taking your software ecosystem directly from MVP to live production using modern .NET architectures. Enterprise-Grade Applications: Engineering secure C# desktop applications and high-availability web platforms that process heavy business workloads using .NET Framework engineering. Legacy System Modernization: Upgrading legacy .NET Framework, ASP.NET MVC, and jQuery apps into modern .NET Core / ASP.NET Core cloud-native environments. AI-Powered Workflow Automation: Building deterministic pipelines, Document AI processing, and deep LLM tool integrations inside your C# / .NET environment. Performance Management & SQL Database Programming: Eliminating Microsoft SQL Server bottlenecks, advanced SQL indexing, SQL database design refactoring, and accurate time & cost estimation. 🌟 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲: 7+ Years of Real-World Experience: Proven technical delivery as a Senior .NET Developer across complex SaaS, fintech, and enterprise operations management spaces. Future-Proof C# Architecture: Strong adherence to SOLID principles, DDD, Clean Architecture, and strict security boundaries in all .NET systems. Technical Leadership & Communication: Extensive experience managing project plans, leading engineering sprints, and conducting rigorous .NET code reviews to keep budgets and timelines perfectly aligned. I don’t just write code—I build reliable, scalable .NET systems that solve real business problems and grow with your product. 📩 𝗟𝗲𝘁’𝘀 𝗰𝗼𝗻𝗻𝗲𝗰𝘁! Share your project requirements, and I’ll help you turn them into a powerful, scalable .NET solution. 🔧 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: .NET Developer Upwork | .NET Development | ASP.NET Core Developer | C# Developer | .NET Web Development | .NET Application Development | .NET API Development | .NET Backend Developer | .NET Full Stack Developer | .NET Core Developer | .NET Microservices Developer | .NET REST API Developer | .NET Enterprise Application Development | .NET SQL Server Developer | .NET Azure Developer | .NET Cloud Application Development | .NET Performance Optimization | .NET Migration & Upgrade Services | Windows Desktop Application Development | ASP.NET MVC Developer | WPF Development | Senior .NET Developer | C# Programmer | C# Software Engineer | ASP.NET Developer | SQL Developer | Microsoft SQL Server Expert 🎯 𝗔𝗹𝗴𝗼𝗿𝗶𝘁𝗵𝗺𝗶𝗰 .𝗡𝗘𝗧 & .𝗡𝗘𝗧 𝗙𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸 𝗞𝗲𝘆𝘄𝗼𝗿𝗱 𝗥𝗲𝗴𝗶𝘀𝘁𝗿𝘆: .NET Systems & Capabilities: .NET Core, .NET Optimization, .NET Integration, .NET Deployment, .NET Automation, .NET Services, .NET Consulting, .NET Solutions, .NET Pipelines, .NET Scalability, .NET Strategy, .NET Refactoring, .NET Security, .NET Engineering, .NET Platforms, .NET Tools, .NET Delivery, .NET Best Practices, .NET Coding, .NET Ecosystem, .NET Infrastructure, .NET Expert. .NET Framework Modernization Matrix: .NET Framework legacy support, .NET Framework desktop apps, .NET Framework web apps, .NET Framework API migration, .NET Framework modernization, .NET Framework C# source code, .NET Framework

𝐒𝐞𝐧𝐢𝐨𝐫 𝐀𝐒𝐏.𝐍𝐄𝐓 𝐂𝐨𝐫𝐞 & 𝐂# 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 with 𝟖+ 𝐲𝐞𝐚𝐫𝐬 building 𝐞𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐛𝐚𝐜𝐤𝐞𝐧𝐝 𝐬𝐲𝐬𝐭𝐞𝐦𝐬, 𝐒𝐚𝐚𝐒 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬, and 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐛𝐚𝐜𝐤𝐞𝐧𝐝 𝐬𝐞𝐫𝐯𝐢𝐜𝐞𝐬 for enterprise clients and scaling businesses. 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 on Upwork delivering 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐠𝐫𝐚𝐝𝐞 .𝐍𝐄𝐓 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 built on 𝐜𝐥𝐞𝐚𝐧 𝐚𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞, 𝐂𝐐𝐑𝐒, and 𝐃𝐃𝐃 aligned from 𝐀𝐏𝐈 𝐝𝐞𝐬𝐢𝐠𝐧 to 𝐜𝐥𝐨𝐮𝐝 𝐝𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭 from day one. ━━━━━━━━━━━━━━━━━━━━━━ 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝 ━━━━━━━━━━━━━━━━━━━━━━ 𝐀𝐒𝐏.𝐍𝐄𝐓 𝐂𝐨𝐫𝐞 & 𝐂# 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 𝐀𝐒𝐏.𝐍𝐄𝐓 𝐂𝐨𝐫𝐞 𝐖𝐞𝐛 𝐀𝐏𝐈, 𝐂#, .𝐍𝐄𝐓, 𝐁𝐥𝐚𝐳𝐨𝐫, 𝐄𝐅 𝐂𝐨𝐫𝐞, 𝐋𝐈𝐍𝐐, 𝐃𝐚𝐩𝐩𝐞𝐫, 𝐑𝐄𝐒𝐓 𝐀𝐏𝐈𝐬, 𝐆𝐫𝐚𝐩𝐡𝐐𝐋, 𝐒𝐢𝐠𝐧𝐚𝐥𝐑, and authentication systems (𝐉𝐖𝐓, 𝐎𝐀𝐮𝐭𝐡𝟐, 𝐎𝐩𝐞𝐧𝐈𝐃 𝐂𝐨𝐧𝐧𝐞𝐜𝐭) for high-performance enterprise applications. 𝐀𝐈/𝐌𝐋 & 𝐋𝐋𝐌 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 𝐑𝐀𝐆 𝐩𝐢𝐩𝐞𝐥𝐢𝐧𝐞𝐬, 𝐋𝐋𝐌 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 (𝐎𝐩𝐞𝐧𝐀𝐈, 𝐋𝐚𝐧𝐠𝐂𝐡𝐚𝐢𝐧), 𝐀𝐈 𝐚𝐠𝐞𝐧𝐭𝐬, 𝐯𝐞𝐜𝐭𝐨𝐫 𝐝𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬, 𝐇𝐮𝐠𝐠𝐢𝐧𝐠 𝐅𝐚𝐜𝐞, 𝐏𝐲𝐭𝐡𝐨𝐧 (𝐅𝐚𝐬𝐭𝐀𝐏𝐈, 𝐃𝐣𝐚𝐧𝐠𝐨, 𝐅𝐥𝐚𝐬𝐤), and intelligent automation embedded into .NET and cloud-native systems. 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐒𝐚𝐚𝐒, 𝐄𝐑𝐏 & 𝐂𝐑𝐌 𝐌𝐮𝐥𝐭𝐢-𝐭𝐞𝐧𝐚𝐧𝐭 𝐒𝐚𝐚𝐒 𝐚𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞, 𝐄𝐑𝐏 𝐬𝐲𝐬𝐭𝐞𝐦𝐬, 𝐂𝐑𝐌 𝐛𝐚𝐜𝐤𝐞𝐧𝐝𝐬, 𝐬𝐮𝐛𝐬𝐜𝐫𝐢𝐩𝐭𝐢𝐨𝐧 𝐬𝐲𝐬𝐭𝐞𝐦𝐬, 𝐑𝐁𝐀𝐂, and workflow automation for compliance-driven enterprise platforms. 𝐀𝐳𝐮𝐫𝐞, 𝐀𝐖𝐒 & 𝐃𝐞𝐯𝐎𝐩𝐬 𝐀𝐳𝐮𝐫𝐞 (App Service, AKS, Functions, Service Bus, DevOps), 𝐀𝐖𝐒 (EC2, S3, Lambda, RDS), 𝐃𝐨𝐜𝐤𝐞𝐫, 𝐊𝐮𝐛𝐞𝐫𝐧𝐞𝐭𝐞𝐬, 𝐂𝐈/𝐂𝐃 (𝐆𝐢𝐭𝐇𝐮𝐛 𝐀𝐜𝐭𝐢𝐨𝐧𝐬, 𝐀𝐳𝐮𝐫𝐞 𝐃𝐞𝐯𝐎𝐩𝐬), and cloud-native production environments built for uptime and scale. 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 & 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐒𝐐𝐋 𝐒𝐞𝐫𝐯𝐞𝐫, 𝐏𝐨𝐬𝐭𝐠𝐫𝐞𝐒𝐐𝐋, 𝐌𝐲𝐒𝐐𝐋, 𝐌𝐨𝐧𝐠𝐨𝐃𝐁, 𝐑𝐞𝐝𝐢𝐬, indexing strategies, query optimization, and caching layers for production-scale data architecture. ━━━━━━━━━━━━━━━━━━━━━━ 𝐁𝐞𝐬𝐭 𝐅𝐢𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 ━━━━━━━━━━━━━━━━━━━━━━ ✔ Enterprise ASP.NET Core backend systems & APIs ✔ SaaS platforms with multi-tenant architecture ✔ ERP & CRM backend development ✔ AI-powered backends with RAG, LLM & OpenAI ✔ Azure & AWS cloud-native DevOps infrastructure ✔ Legacy system modernization & performance optimization ━━━━━━━━━━━━━━━━━━━━━━ 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐒𝐭𝐚𝐜𝐤 ━━━━━━━━━━━━━━━━━━━━━━ Core: 𝐀𝐒𝐏.𝐍𝐄𝐓 𝐂𝐨𝐫𝐞 | 𝐂# | .𝐍𝐄𝐓 | 𝐁𝐥𝐚𝐳𝐨𝐫 | 𝐄𝐅 𝐂𝐨𝐫𝐞 | 𝐃𝐚𝐩𝐩𝐞𝐫 | 𝐒𝐢𝐠𝐧𝐚𝐥𝐑 AI/ML: 𝐎𝐩𝐞𝐧𝐀𝐈 | 𝐋𝐚𝐧𝐠𝐂𝐡𝐚𝐢𝐧 | 𝐑𝐀𝐆 | 𝐋𝐋𝐌 | 𝐇𝐮𝐠𝐠𝐢𝐧𝐠 𝐅𝐚𝐜𝐞 | 𝐕𝐞𝐜𝐭𝐨𝐫 𝐃𝐁 | 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭𝐬 Python: 𝐅𝐚𝐬𝐭𝐀𝐏𝐈 | 𝐃𝐣𝐚𝐧𝐠𝐨 | 𝐅𝐥𝐚𝐬𝐤 Other: 𝐍𝐨𝐝𝐞.𝐣𝐬 | 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭 | 𝐑𝐮𝐛𝐲 𝐨𝐧 𝐑𝐚𝐢𝐥𝐬 | 𝐉𝐚𝐯𝐚 𝐒𝐩𝐫𝐢𝐧𝐠 𝐁𝐨𝐨𝐭 Frontend: 𝐑𝐞𝐚𝐜𝐭 | 𝐍𝐞𝐱𝐭.𝐣𝐬 | 𝐀𝐧𝐠𝐮𝐥𝐚𝐫 | 𝐓𝐚𝐢𝐥𝐰𝐢𝐧𝐝 Databases: 𝐒𝐐𝐋 𝐒𝐞𝐫𝐯𝐞𝐫 | 𝐏𝐨𝐬𝐭𝐠𝐫𝐞𝐒𝐐𝐋 | 𝐌𝐲𝐒𝐐𝐋 | 𝐌𝐨𝐧𝐠𝐨𝐃𝐁 | 𝐑𝐞𝐝𝐢𝐬 Cloud & DevOps: 𝐀𝐳𝐮𝐫𝐞 | 𝐀𝐖𝐒 | 𝐃𝐨𝐜𝐤𝐞𝐫 | 𝐊𝐮𝐛𝐞𝐫𝐧𝐞𝐭𝐞𝐬 | 𝐂𝐈/𝐂𝐃 | 𝐀𝐳𝐮𝐫𝐞 𝐃𝐞𝐯𝐎𝐩𝐬 | 𝐆𝐢𝐭𝐇𝐮𝐛 𝐀𝐜𝐭𝐢𝐨𝐧𝐬 ━━━━━━━━━━━━━━━━━━━━━━ If you need a 𝐒𝐞𝐧𝐢𝐨𝐫 𝐀𝐒𝐏.𝐍𝐄𝐓 𝐂𝐨𝐫𝐞 & 𝐂# 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 who builds 𝐞𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐛𝐚𝐜𝐤𝐞𝐧𝐝 𝐬𝐲𝐬𝐭𝐞𝐦𝐬, 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐬𝐞𝐫𝐯𝐢𝐜𝐞𝐬, and 𝐜𝐥𝐨𝐮𝐝-𝐧𝐚𝐭𝐢𝐯𝐞 𝐃𝐞𝐯𝐎𝐩𝐬 on Azure and AWS, let's connect.

* Netsuite Development expert * Excellent Web application developer * Proficient in English * Good experience in Netsuite customisation * Flexible working hours * Strictly follow deadlines. I have experience in NetSuite Development JavaScript Postgresql psd to html PHP MySQL Jquery Ajax HTML 5 CSS Wordpress Bootstrap I offer you high quality software development service that is on par with budget and time parameters. Thanks for viewing my profile.

With 𝟭𝟴+ years of experience building scalable web applications, enterprise platforms, and cloud-based solutions. I have helped 𝟏𝟎𝟎+ businesses develop high-performance websites, SaaS platforms, APIs, and cloud infrastructures using modern frameworks and DevOps practices. My expertise covers backend development, frontend frameworks, cloud infrastructure (AWS), and Linux server management, allowing me to deliver complete end-to-end solutions. 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗜 𝗛𝗮𝘃𝗲 𝗪𝗼𝗿𝗸𝗲𝗱 𝗪𝗶𝘁𝗵 ✔ SaaS Platforms ✔ E-commerce Systems ✔ Enterprise Web Applications ✔ FinTech & Payment Integrations ✔ Government Systems ✔ Cloud Infrastructure 𝗪𝗵𝗮𝘁 𝗜 𝗖𝗮𝗻 𝗛𝗲𝗹𝗽 𝗬𝗼𝘂 𝗪𝗶𝘁𝗵 ✔ Custom Web Application Development ✔ Drupal Theme and Custom Development ✔ SaaS Platform Development ✔ API Development & Integration ✔ Enterprise Backend Systems ✔ AWS Cloud Architecture & Deployment ✔ DevOps & CI/CD Implementation ✔ Server Setup & Performance Optimization ✔ Saudi ZATCA E-Invoicing Integration ✔ Bug Fixing, Maintenance & System Optimization 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 ✔ PHP Core Development ✔ Laravel Framework ✔ Yii2 Framework ✔ CodeIgniter ✔ Elixir ✔ Phoenix Framework ✔ Java 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 ✔ JavaScript ✔ jQuery ✔ AngularJS ✔ React.js ✔ HTML5 / CSS3 ✔ AJAX 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀 ✔ MySQL ✔ Aurora ✔ Oracle ✔ DynamoDB 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀 (𝗔𝗪𝗦) Experienced with multiple AWS services including ✔ EC2 (Elastic Compute Cloud) ✔ SES (Simple Email Service) ✔ RDS (MySQL, Aurora, Oracle) ✔ S3 & Glacier ✔ Route 53 ✔ IAM Role Management ✔ SNS & SQS ✔ AWS Lambda ✔ ElastiCache 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 & 𝗦𝗲𝗿𝘃𝗲𝗿 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 I also fully manage Linux servers for production environments. ✔ Ubuntu ✔ CentOS ✔ Web hosting setup ✔ Security & performance optimization ✔ Deployment automation 💡 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲 ✔ 18+ Years of Development Experience ✔ Strong Communication & Problem Solving ✔ Clean, Scalable, Maintainable Code ✔ DevOps + Development Expertise ✔ Reliable Long-Term Support 📩 If you are looking for a reliable senior developer to build or scale your platform, feel free to reach out. You will get high-quality work and full dedication to your project, In Sha Allah.

Hello there! Well, I've been a Linux (or GNU/Linux) system administrator for the last +14 years. My primary role has always been a troubleshooter, if it is broken I can fix it. My primary skills are Red Hat 5,6,7 WHM ( cPanel ) I owned a hosting company for over 8 years then sold it and moved to the US Red Hat Satellite 6 Spacewalk / Oracle Linux Manager (OLM) AIX Some Web Sphere Application Server Kubernetes Docker OpenVZ SolusVM Puppet iDRAC Synology QNAP OCI (Oracle Cloud Infrastructure) Also I have plenty of experience with hardware particularly HPE and DELL,

I help founders and growing businesses make better technology decisions before expensive mistakes slow growth. Most software projects do not fail because of bad code. They fail because goals were unclear, ownership was fuzzy, scope expanded without discipline, or early architecture decisions could not support real-world operations. My role is to reduce those risks early and help companies build systems that actually ship — and continue to perform as the business grows. I work with clients to clarify: • What they are truly trying to achieve • Where workflows, handoffs, or systems are breaking down • What should be built now vs. later • How to move forward within real budget, timeline, and operational constraints That starts with understanding the current business, processes, and data flows — then designing practical systems that are scalable, maintainable, and aligned to outcomes. Where it adds real leverage, that may include automation, integrations, or AI. ⸻ Experience & Approach I bring 30+ years of hands-on experience across healthcare, finance, legal, nonprofit, SaaS, and data-intensive environments. My background includes: • Software architecture • SaaS platform strategy • Backend systems and APIs • Systems integration • Workflow automation • AI-enabled business systems • Product and technical leadership I operate in a hands-on senior advisor model: • I personally lead architecture, technical assessments, planning, and key decisions • When execution support is needed, I can coordinate trusted developers under clear direction • You maintain one accountable senior point of contact throughout the engagement Clients get executive-level judgment where it matters most — without wasting senior budget on every implementation task. ⸻ How I Typically Work Successful projects usually follow a disciplined sequence: 1. Alignment – Clarify goals, risks, constraints, and success metrics 2. Solution Definition – Turn business needs into practical technical decisions 3. Architecture Review – Validate the direction before heavy investment 4. Phased Roadmap – Define milestones, sequencing, and priorities 5. Execution Support – Guide delivery, decisions, and course correction as needed This approach creates momentum, reduces rework, and leads to systems that last. ⸻ Clients Hire Me To • Serve as a Fractional CTO or senior technical advisor • Build MVPs and new SaaS platforms the right way • Rescue stalled or fragile software projects • Modernize legacy systems • Design automation and AI-assisted workflows • Integrate disconnected tools and data sources • Improve scalability, maintainability, and reliability • Get an unbiased view of build vs. refactor vs. replace ⸻ If you need someone to simply complete tickets, I may not be the best fit. If you want an experienced partner who thinks strategically, challenges assumptions, and helps you make sound technical decisions, we will likely work well together. I’d be glad to learn more about your project and discuss whether there’s a strong fit.

Startups, enterprises and public-sector organizations bring me in when the product needs strong technical decisions, not just execution - production AI systems, SaaS platforms and fintech, from architecture to live deployment. Most engagements start with a fixed-price design phase that defines architecture, scope and roadmap, then convert into fixed milestones, so delivery stays structured and budget predictable. Rate $125-150/hr depending on complexity; most work is delivered as fixed-price milestones. What I specialise in: AI/LLM systems - RAG pipelines, multi-tenant AI assistants, agent orchestration, Claude/OpenAI integrations, structured outputs, eval pipelines. SaaS platforms - multi-tenant architecture, subscription billing, RBAC, admin backends, scalable APIs across web and mobile. Fintech/compliance - ACH, Stripe Connect, idempotent payment webhooks, audit logging, GDPR-compliant data. Govtech/regulated - transparency platforms, donor-funded compliance, multi-language reporting. Blockchain/Web3 - Solana smart contracts, SPL tokens, DeFi integrations. Selected results (live demos and links in the Portfolio section): Minerva (active production) - multi-tenant AI assistant platform architected end to end: organizations upload document libraries and deploy embeddable chatbots on their own knowledge base. Hybrid retrieval (BM25 + dense vector + semantic), Entra ID + RBAC + MFA, full tenant isolation, golden-query eval harness in CI. NestJS, Next.js, Azure OpenAI. Diginak.ai (active production, lead architect) - logistics document automation that auto-processes ~78% of inbound PDF/CSV/Excel with zero human touch; the remainder routes to human review with confidence scores. Claude API + tool use, state-machine workflow engine, retry/idempotency, 850+ automated tests. NestJS, PostgreSQL. Walletta AI Cashier (concluded May 2026, 5-star) - real-time voice agent with sub-500ms perceived latency. Claude + GPT-4o orchestration, structured tool calls with confidence-scored routing, persistent WebSocket, retry with circuit breaker. LiveKit, Deepgram, ElevenLabs, NestJS. Damen Capital Portal (concluded May 2026, 5-star) - loan-servicing portal for a private lender with the full ACH lifecycle: tokenization, NACHA returns R01-R85, HMAC-verified idempotent webhooks, append-only audit log, OAuth 2.0 + RBAC, scheduled reconciliation. NestJS + Fastify, Supabase. PulseYourBiz (active production) - all-in-one SaaS for service providers: bookings, payments, invoicing, CRM, analytics. Five-app Turborepo monorepo, Stripe Connect payouts, idempotent webhooks, React Native mobile. Docker + GitHub Actions. ProveYourImpact (production) - multi-tenant governance/compliance platform for donor-funded projects in PALOP countries: 20 API modules, 9-role RBAC, configurable workflow engine, audit log, EU/UNDP/World Bank report generators in four languages. NestJS, Next.js, PostgreSQL + RLS. Also shipped: no-code Solana token/DeFi platform with 1,500+ users (SwapForge), offline-first clinical decision support for underserved regions (ExtendYourClinic), multi-tenant VetSaaS with PostgreSQL RLS isolation (acti.vet), React Native apps live on both app stores (ForroAI). Tech stack: Backend: Node.js, NestJS, Python, FastAPI, REST, GraphQL. Frontend: React, Next.js, React Native, Expo, TypeScript, Tailwind. AI: Claude, OpenAI, RAG, pgvector, Azure Cognitive Search, structured outputs (Zod/Pydantic), prompt caching, tool use, eval harnesses in CI. Cloud: Azure (Functions, OpenAI, Entra ID, Key Vault, App Insights, Bicep IaC), AWS, GCP, Docker, GitHub Actions. Databases: PostgreSQL, MongoDB, Redis, Supabase, RLS tenant isolation. Blockchain: Solana, Anchor, SPL, Jupiter, Solidity, EVM. Working model: 25-30 hrs/week across a small number of parallel engagements. Best fit when the product needs architectural ownership - not a fit for quick fixes or one-off tasks.

As an Oracle APEX Developer with over 9 years of experience, I specialize in creating robust, scalable, and user-friendly web applications. My expertise includes PL/SQL programming, database design, and seamless integration of third-party APIs. I have successfully delivered 20+ projects across various industries, enhancing business processes and user engagement. Let’s collaborate to transform your ideas into efficient solutions.

Extremely self-motivated Software Architect with the ability to be proactive with project execution. This includes over 16 years ofexperience and a passion for software development and learning new technologies as well as designing software systems using agile and spiral software development in C#, .Net , NET Core, Javascript frameworks like Angular/React, and development for Gateways, Cross stack functionality, and Cloud platforms. Framework .Net 3.5 above .Net Core 3.1, 5.0,6.0 Tool Visual Studio , Visual Studio Code Language / Library C# , Type Script, Angular, React Database Microsoft SQL Server, Monogodb, Oracle ORM Entity framework , Dapper, Nhibernate Architecture Monolethic, Microservices, SOA Web API/ Web Services RestAPI, GraphQL Thanks you in advance for your time and consideration. I look forward to working with you.

🏅 100% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 𝗦𝗰𝗼𝗿𝗲 | 🏅 𝗢𝘃𝗲𝗿 $300𝗸+ 𝗘𝗮𝗿𝗻𝗲𝗱 | 🏅 9,930+ 𝗛𝗼𝘂𝗿𝘀 𝗪𝗼𝗿𝗸𝗲𝗱 🛡️ Senior Mobile App Developer | iOS & Android • Cross-Platform | Swift • Kotlin • Flutter • React Native Hello, I am a senior mobile app developer with over a decade of experience building high-performance, scalable, and secure mobile applications for businesses across industries. My work focuses on delivering clean, maintainable code, intuitive UI/UX, and robust integrations that ensure long-term reliability and growth. 🔹 Core Technical Expertise Native iOS Development (Swift, SwiftUI, Objective-C) • Advanced UI with SwiftUI • Secure authentication, Keychain, biometrics • In-App Purchases, StoreKit, subscription systems • Push notifications, background tasks, app lifecycle handling Native Android Development (Kotlin, Java) • Jetpack Compose, Material Design • Google Billing, Firebase integration • Secure data handling, encryption, offline caching • Device hardware integrations (GPS, camera, sensors) Cross-Platform Development • Flutter / Dart for fast, consistent multi-platform delivery • React Native for modular, scalable hybrid apps • Adaptive layouts, responsive UI, optimized rendering 🔹 Backend, Cloud & Integrations • Firebase: Auth, Firestore, Cloud Storage, FCM, analytics • Supabase: Auth, Postgres DB, RPC, edge functions • REST APIs, GraphQL APIs, WebSockets • AWS, GCP, Node.js, Python-based backend integration • AI/LLM integrations: OpenAI API, chatbots, voice AI 🔹 Advanced App Features Delivered • Real-time chat, messaging systems • Geo-tracking, mapping, route optimization • Media streaming, audio/video recording • Subscription apps (RevenueCat, Google Billing) • E-commerce app functionality • Custom dashboards, gamification, rewards • Highly secure login & data encryption 🔹 Engineering Process • Clean architecture (MVVM/MVI/Bloc) • CI/CD pipelines, testing, profiling • Milestone-based delivery with transparent updates • App Store & Play Store launch support • Full documentation + post-launch support 🔹 AI & LLM Expertise • OpenAI (GPT-4/5), Claude, Gemini • Prompt Engineering & Optimization • Tool / Function Calling • Autonomous AI Agent Development • Multi-Agent Systems • Retrieval-Augmented Generation (RAG) • Context & Memory Architecture Design 🔹 AI Frameworks • LangChain • LlamaIndex • CrewAI • AutoGen • Semantic Kernel • Hugging Face 🔹 Programming & Backend • Python (Advanced) • FastAPI • REST API Development • Async Programming • API Integration 🔹 Vector Databases & Data Handling • Pinecone • FAISS • ChromaDB • Weaviate • PostgreSQL • MongoDB 🔹 AI Solutions Development • AI Chatbots (Custom & Enterprise) • AI Sales & Lead Qualification Agents • Document Processing & Data Extraction • Knowledge Base AI Assistants • Workflow Automation Systems • AI SaaS Application Development 🔹 Deployment & DevOps • Docker • AWS / GCP • Vercel • CI/CD • Production Deployment & Scaling If you’re seeking a senior, dependable, and highly skilled mobile app developer to build or scale your iOS/Android application, I’d be glad to help you bring your vision to life. Thanks, Eshan Keywords# ------------- Mobile App Development, iOS Development, Android Development, Cross-Platform App Development, Hybrid App Development, Native App Development, React Native Development, Flutter Development, Swift Programming, Java/Kotlin Programming API Integration, UI/UX Design, Database Management, Front-End Development, Back-End Development, Agile Methodology, Git Version Control, App Testing and QA, Firebase Integration, Cloud Services (AWS, Azure) E-commerce App Development, Social Networking App Development, Fitness App Development, Game Development, Educational App Development, Travel App Development, Health & Wellness App Development, Finance/Budgeting App Development, AR/VR App Development, IoT Integration Project Management & Collaboration: Requirement Analysis, MVP Development, Deployment and App Store Submission, Continuous Integration/Continuous Deployment (CI/CD), User Feedback Implementation, Beta Testing "App Developer for Hire", "Freelance App Developer", "Experienced Mobile Developer", "Custom App Development", "Professional App Development Services"