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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

𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 | 𝟭𝟬𝟬% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 | 𝟭𝟯+ 𝗬𝗲𝗮𝗿𝘀 | 𝟴,𝟬𝟬𝟬+ 𝗨𝗽𝘄𝗼𝗿𝗸 𝗛𝗼𝘂𝗿𝘀 | $𝟮𝟬𝟬𝗞+ 𝗘𝗮𝗿𝗻𝗲𝗱 | I'm a senior .NET / C# developer and Azure cloud architect who builds and scales production systems for companies that can't afford downtime or rework — healthcare platforms, fintech products, e-commerce systems, and real estate/property-management software. If your project needs more than someone who writes code to spec — if you need someone who can architect the solution, own the delivery, and still be there for support six months later — that's the role I take on. WHAT I BUILD ──────────────────────── ✦ SaaS Platforms — multi-tenant, subscription-based .NET Core / Azure applications built to scale from a handful of users to enterprise volume ✦ Healthcare Systems — HIPAA-aware EHR/EMR platforms, HL7/FHIR integrations, and clinical workflow tools built to compliance standards ✦ Fintech & Payments — secure transaction processing, Stripe/PayPal integrations, reporting and reconciliation systems, PCI-conscious architecture ✦ E-Commerce Platforms — custom storefronts, order/inventory management, and integrations with payment gateways, CRMs, and ERPs ✦ Real Estate & Property Management Systems — listing platforms, tenant/lease management tools, and workflow automation for property teams ✦ AI-Powered Features — OpenAI/LLM integrations, intelligent document processing, and AI-assisted workflows added to existing .NET applications ✦ Legacy Modernization — turning outdated ASP.NET/VB.NET systems into maintainable, cloud-ready .NET 8 platforms without breaking what already works TECH STACK ──────────────────────── + Backend: C# · .NET 8 / .NET Core · ASP.NET Core · ASP.NET MVC · Web API · Entity Framework Core · LINQ · Blazor · SignalR · Microservices · REST & SOAP APIs + Frontend: Angular · React · TypeScript · JavaScript · HTML5 · CSS3 · Blazor UI + Cloud & DevOps: Microsoft Azure (App Services, Functions, AKS, Service Bus, Key Vault, Azure SQL) · AWS (EC2, Lambda, RDS, S3) · Azure DevOps · GitHub Actions · CI/CD · Docker · Kubernetes · Infrastructure as Code + Databases: SQL Server · PostgreSQL · Cosmos DB · MongoDB · Stored Procedures & Query Optimization for high-volume systems + Integrations: Stripe · PayPal · Twilio · SendGrid · OAuth 2.0 · HL7 · FHIR · CRM/ERP integrations HOW I WORK ──────────────────────── I stay involved from architecture through deployment — writing clean, documented, production-ready code, and communicating progress clearly at every step. I manage scope, timelines, and stakeholder expectations as carefully as I manage the codebase itself. Depending on what your project needs, I can work as a hands-on senior engineer, a solution architect, or a long-term technical lead. I'll tell you honestly, early, if I'm the right fit for what you're building. Send me your project scope and I'll respond within a few hours.

I'm a seasoned software engineer with deep expertise in Unity and C#, specializing in game development and integrating gameplay systems. My work has been recognized by industry leaders, including Activision. This recognition underscores my ability to deliver innovative game solutions that exceed client expectations. I'm eager to bring this level of excellence to meet and surpass your needs! Skills & Expertise: 👨‍💻 Unity development: Unity scripting (C#), asset integration, mobile app development, performance optimizations, game mechanic/systems integration, game bug fixes, and RESTful API Integrations 🛠️ Version control software: Git, GitHub, Unity Version Control 🛜 Networking libraries: Photon Fusion, Mirror Networking, PUN2 🔧 Unity integration services: IAP & app advertising SDK integrations 🚩 Project management tools: Jira, Trello, Azure Boards, Confluence 🧩 Genres: FPS/TPS, match-3 puzzle, MMORPG, racing, top-down shooters, and open to expanding more! ⚙️Back-end services: Google Cloud Firestore for Firebase, Google Cloud Storage for Firebase, and Supabase 🧭 Perspectives: 3D & 2D I can implement solutions to accelerate your project and go beyond your expectations. I have worked with various clients and carved out project deliverables using the skillsets mentioned above. What I aim to bring to my client's project: ⏳ Timely deliverables meeting your direct needs, adjustments, or improvements 📞Clear and constant communication on my latest status for your milestone 👨‍💻 Professionalism in quality software development 🤝 Cooperation on the highest level to ensure you feel comfortable throughout our partnership ⏱️ Respect your time and perspective to ensure deadlines are met reasonably I will develop code for you that is clean, readable, portable, and maintainable. I always do my best to follow SOLID, DRY, and YAGNI software design principles and will adapt to any coding preferences, principles, or design patterns on a team or with you.

✅ 𝗠𝘂𝗹𝘁𝗶𝗽𝗹𝗲 𝟳-𝟴 𝗳𝗶𝗴𝘂𝗿𝗲 𝘀𝘂𝗰𝗰𝗲𝘀𝘀𝗲𝘀 & 𝗦𝗮𝗮𝗦 𝗰𝗹𝗶𝗲𝗻𝘁𝘀/𝗮𝗽𝗽𝘀 𝗮𝗰𝗾𝘂𝗶𝗿𝗲𝗱. ✅ 𝟳𝟱+ 𝗮𝗽𝗽𝘀 𝗯𝘂𝗶𝗹𝘁. 𝟭𝟭+ 𝘆𝗲𝗮𝗿𝘀 𝗽𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲. ✅ 𝗔𝗰𝗰𝘂𝗿𝗮𝘁𝗲 & 𝗴𝘂𝗮𝗿𝗮𝗻𝘁𝗲𝗲𝗱 𝗾𝘂𝗼𝘁𝗲𝘀 𝘄𝗶𝘁𝗵 𝟯𝟬-𝟰𝟬% 𝗹𝗼𝘄𝗲𝗿 𝗰𝗼𝘀𝘁𝘀 𝗮𝗻𝗱 𝗱𝗲𝘃 𝘁𝗶𝗺𝗲𝘀 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗽𝗿𝗼𝗽𝗿𝗶𝗲𝘁𝗮𝗿𝘆 𝗳𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸 𝘂𝘀𝗲(prebuilt-SaaS code). ✅ 𝗣𝗵𝗲𝗻𝗼𝗺𝗲𝗻𝗮𝗹 𝗰𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝗺𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 𝘀𝗸𝗶𝗹𝗹𝘀. 𝗜𝗻𝘁𝗲𝗹𝗹𝗶𝗴𝗲𝗻𝘁 𝗱𝗲𝘃 𝗽𝗿𝗼𝗰𝗲𝘀𝘀 𝗳𝗼𝗹𝗹𝗼𝘄𝗲𝗱 𝗯𝘂𝗶𝗹𝘁 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝗼𝘁𝗵𝗲𝗿 𝗽𝗿𝗼𝗱𝘂𝗰𝘁 𝘀𝘂𝗰𝗰𝗲𝘀𝘀𝗲𝘀. ✅ 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀, 𝗲𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲-𝗿𝗲𝗮𝗱𝘆 𝗳𝗿𝗼𝗺 𝗹𝗮𝘂𝗻𝗰𝗵. ✅ 𝗨𝗦 𝗰𝗹𝗶𝗲𝗻𝘁 𝘀𝗽𝗲𝗰𝗶𝗮𝗹𝘁𝘆. Hi, I’m Andrew! I specialize in delivering polished SaaS apps consistently focused on earning revenue. 𝗜𝗻𝘃𝗶𝘁𝗲 𝗺𝗲 𝘁𝗼 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 𝗼𝗿 𝘀𝗲𝗻𝗱 𝗺𝗲 𝗮 𝗱𝗶𝗿𝗲𝗰𝘁 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 𝗮𝗻𝗱 𝗶𝗳 𝘁𝗵𝗲𝗿𝗲’𝘀 𝗮 𝗹𝗶𝗸𝗲𝗹𝗶𝗵𝗼𝗼𝗱 𝗼𝗳 𝗮 𝗴𝗼𝗼𝗱 𝗳𝗶𝘁 𝘁𝗼 𝘄𝗼𝗿𝗸 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿, 𝗜’𝗹𝗹 𝗶𝗻𝘃𝗶𝘁𝗲 𝘆𝗼𝘂 𝘁𝗼 𝗯𝗼𝗼𝗸 𝗮 𝗰𝗼𝗺𝗽𝗹𝗶𝗺𝗲𝗻𝘁𝗮𝗿𝘆 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 𝗰𝗮𝗹𝗹 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿. 🗣 𝗝𝗼𝗵𝗻 𝗠𝘂𝗹𝗹𝗲𝗻𝗵𝗼𝗹𝘇 - 𝗛𝗲𝗮𝗱 𝗼𝗳 𝗦𝗮𝗹𝗲𝘀, 𝗦𝘁𝗿𝗮𝘁𝗲𝗴𝗶𝗰 𝗘𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲 - 𝗨𝗯𝗲𝗿 𝗘𝗮𝘁𝘀 ❝ Andrew is the most skilled freelancer and developer I have ever worked with, and I have worked with a lot. He was able to take very broad ideas and turn them into actionable insights and plans in a way I could never imagine was possible. Andrew is the best possible thing to happen to our business and the definition of a true professional. I could not recommend him enough. Anyone who has the opportunity to work with Andrew should consider themselves extremely lucky. ❞ I excel at expertly guiding the app dev process to max out your revenue-earning potential in contrast to your costs, and to steer you away from common SaaS app pitfalls. Client Outcome Examples: ⚡ amzalert.com (8-Figure Acquisition - Rebuilt In 4 Months) ⚡ launchcontrol.us (8-Figure Annual Recurring Revenue - ARR) ⚡ GuestBan.com (Concept-To-Live in 5 Months - 1M+ Monthly App Checkins) My support is based on hard-won successes built through more than a decade of SaaS app obsession. Most of my clients are: ☑️ Existing Businesses - Post-revenue ☑️ Solopreneurs & Small Teams - Wanting to build an MVP app ☑️ Funded Startups - Focused on turning funding into MRR ☑️ Existing Early Stage SaaS - Want to rebuild and scale up I’m the founder of a small, hand-picked team of talented humans. I’m personally involved in all projects, and we only employ senior developers and native English speakers from the US for project management and communication. My team and I are able to consistently reduce dev costs by about 30-40% by leveraging pre-built development frameworks for common app experiences like the user login or checkout, for example, while reserving valuable dev hours for truly custom functionality. Every project we build delivers: 📱Cross Device Compatibility - Desktop - Mobile - Tablet 📈 App Speed Optimization 🧩 Scaleable - Cost-Effective Feature Addition Potential 🛡️ Security 📊 User Analytics & Internal Dashboards 🌐 Multi-Language Localization 🤖 Quality Assurance - QA 📜 Paid User Subscription, Billing & Renewal Management Thanks for taking the time to learn more about me. Invite me to your project or send me a direct message if you’re interested in working together. Talk soon! Andrew Mace - Founder - Lean Engineering Highlights of the work I have extensive experience in includes: SaaS MVP • AI Automation • No-Code/Low-Code • Process Automation • RPA • .NET 8 • Python • AWS • Azure • Docker • Serverless • OpenAI / ChatGPT • Generative AI • Zapier • Make.com • UiPath • Power Automate • n8n • Bubble • Airtable • Stripe • PayPal • Twilio • Slack • Teams • REST APIs • Webhooks • SQL • PostgreSQL • Redis • Power BI • KPI Dashboards • ETL • Airflow • Real-Time Chat • Push Notifications • Subscription Billing • CRM Integration • Lead Generation Bots • Data Analytics • Digital Transformation • Workflow Automation • Rapid Prototyping

We help enterprises modernize, migrate, and future-proof IBM i (AS400), Mainframe, COBOL, and RPG environments while integrating them with cloud-native, API-first, and AI-enabled architectures. We are also ISO 42001 and ISO 27001 certified, ensuring strong AI governance and information security standards. Since 2013, we have delivered transformation programs for 100+ global clients, including Fortune 500 organizations—turning rigid legacy platforms into scalable, digital ecosystems. With deep expertise across IBM i, ERP, EDI, cloud, and enterprise application stacks, we bridge traditional systems with modern Java, .NET, cloud, microservices, AI, and real-time integration frameworks. Legacy Systems & IBM i / Mainframe Modernization Platforms: IBM i (AS400 / iSeries), IBM z, COBOL, RPG, SQLRPGLE, CLLE, Synon, NetCOBOL, Fujitsu COBOL, Delphi Operating Systems: OS/400 (V5R3–V7R5), IBM AIX Tools: Profound, LANSA, Synon, WebSphere, ARCAD, X‑Analysis, MIMIX, RDi, ACS Core Modernization Services AS400 / IBM i modernization & green‑screen transformation RPG to Java and .NET migration COBOL to NetCOBOL / Fujitsu COBOL conversion IBM i API enablement & microservices architecture DB2/400 migration to PostgreSQL, SQL Server, Cloud databases IBM i cloud migration (AWS & Azure hybrid models) Legacy application refactoring & performance optimization Full‑Stack Development (Java | .NET | PHP | Delphi) Java: Spring/Spring Boot, Hibernate, Struts, Microservices, REST/SOAP, Kafka, Camel .NET: .NET Core/5–7, ASP.NET Core, MVC, Web API, Blazor, WCF, SignalR, EF Core, WPF, WinForms PHP & Delphi: Laravel, Symfony, CodeIgniter, Yii, Zend | Delphi 7–11, RAD Studio, VCL, FireMonkey Frontend: React, Angular, Vue, Next, Bootstrap ERP, Integration & Streaming ERP: JobBOSS ERP (Manufacturing), JD Edwards (CNC, BSSV, Z‑Tables, UBE), Infor (XA, LX), PrismERP, S2K, CAMS/400, Dynamics AX Integration: MuleSoft (API‑led, DataWeave, RAML), Apache Kafka, REST/SOAP, cloud & hybrid integration EDI & B2B Integration X12, EDIFACT, VDA, TRADACOMS • Transactions 850–945 • VANs: OpenText, Liaison, GHX • FTP/SFTP/AS2 IBM Sterling, SPS Commerce, TrueCommerce • End‑to‑end EDI onboarding & automation AI, Cloud & DevOps AI: Code analysis, automated refactoring & tests, smart documentation, intelligent EDI validation Cloud & DevOps: AWS, Azure, GCP • CI/CD, Docker, Kubernetes, Jenkins, GitHub Actions Databases: DB2/400, PostgreSQL, MySQL, SQL Server, Oracle, MongoDB, Redis Why Choose Us? Proven IBM i / IBM z modernization expertise Kafka & MuleSoft real-time integration Deep EDI & ERP (Infor, JDE) capability Structured, outcome-driven transformation AI‑assisted acceleration for faster transformation Performance Assurance Dedicated 40+ hrs/week resource Direct Upwork communication Daily updates, weekly reports On-time, high-quality delivery Let's connect - If you are planning AS400 modernization, RPG conversion, COBOL migration, ERP integration, EDI automation, or AI-enabled transformation, we help you execute with precision and measurable outcomes. Keywords- IBM i Modernization | AS400 Modernization | RPG to Java Conversion | RPG to .NET Migration | Free Format RPG | Green Screen Modernization | IBM i Web Enablement | Legacy System Modernization | IBM i GUI Modernization | IBM i Cloud Migration | DB2 Migration | IBM i Consultant | Infor ERP Integration | JD Edwards EnterpriseOne | JDE API Integration | JDE Cloud Migration | ERP Integration | EDI 850 810 856 | WMS Integration | Cobol to Netcobol | Fujitsu Cobol | Delphi Modernization | Mainframe Migration | AI-Assisted Development | DevOps for IBM i | Enterprise Application Modernization | COBOL Migration | Mainframe Modernization | Job BOSS | IBM BOB | AI‑Assisted Modernization | ISO27001 | ISO42001

I’m a Unity C# gameplay engineer who fixes bugs fast and builds clean systems you can ship. Great for studios/indies who need quick progress: mechanics, UI, save systems, AI, and polish. What I do best: 🌟 Gameplay Programming (2D & 3D): player controllers, enemy AI, combat, cameras, interactions, power-ups, progression systems 🧠 Game Systems & Tools: spawning systems, wave/level logic, save systems, ScriptableObject-driven data, simple editor tools to speed up your workflow 🧪 Prototyping & Iteration: quickly building and iterating on mechanics so you can test, refine, and validate ideas fast 🐛 Bug Fixing & Polish: tracking down tricky issues, cleaning up code, optimizing performance, and smoothing out gameplay feel Tech & Skills: Unity (2D & 3D), C#, C++ Strong foundations in algorithms, game architecture, and clean code Git / version control and experience working in agile, remote teams When we work together, you can expect: Clear communication and frequent updates Clean, maintainable code that’s easy for your team to build on A focus on fun, feel, and reliability, not just “making it work” If you need a Unity dev to help build, fix, or improve your game, I’d love to hear about your project!