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I've spent 25+ years building custom production systems, over $500K worth and more than 20 of those in .NET, and these days I'm focused on AI. I build LLM and RAG pipelines, AI agents, and document-intelligence workflows in Python and .NET, usually for businesses whose operations are too unique for off-the-shelf software to fit. The messy, niche, one-off projects most people won't touch are the ones I enjoy most. I automate the manual work that's eating your time and only bring in AI where it genuinely adds value. Hire me when you need something actually built, not just wired together out of existing tools. When the requirements are one of a kind and the domain is a real tangle, I work out the architecture, learn whatever the problem needs, and ship a production system from scratch. That's a big part of why clients stick with me: one for 13 years, another for 4, and a lot of them started with a single project and just kept coming back. "I have yet to give him a hurdle he can't clear." — Scot Nichols, Automotive Diag (2-year client) WHY BUSINESSES CHOOSE ME I don't just build what's on the ticket. I want the actual problem first. Before I write any code I dig into how your business runs: does AI really help here, or would something simpler be more reliable? How will it scale? What will the ongoing model and compute costs look like? Good software, AI or not, has to fit how your business actually works, not whatever's trendy this quarter. I spot the issues you might not see yet — runaway LLM costs, latency under load, multi-user concurrency, awkward integrations — and head them off before they get expensive. I've also helped clients set subscription pricing and cut cloud bills. And I build to last: Clean Architecture, real test coverage, monitoring, and documentation. WHAT SETS ME APART I work across the whole AI and software stack and more than one ecosystem: • AI & LLM engineering — OpenAI, Azure OpenAI, Anthropic/Claude APIs, RAG pipelines (vector + BM25 hybrid, reranking), pgvector, prompt engineering, model selection and benchmarking • AI agents & automation — Microsoft Foundry (Agent Service, Agent Framework), multi-agent orchestration, custom tools via Azure Functions / OpenAPI / Logic Apps / MCP, knowledge-grounded agents over SharePoint / OneLake / Blob, human-in-the-loop approval gates, A2A federation — published into Microsoft Teams and 365 Copilot • Document intelligence — Azure Document Intelligence (prebuilt + custom neural/template models for invoices, receipts, IDs, contracts), Azure AI Search knowledge mining, confidence-scored extraction with human-review routing, PII detection/redaction • Enterprise .NET — ASP.NET Core, Entity Framework, WPF, Clean Architecture • Python data engineering — FastAPI, pandas, Apache Airflow, async processing • Multi-cloud & real-time — Azure, GCP, AWS with Terraform; file monitoring, API integrations, automated workflows When I do use AI, I back it with real numbers, not guesswork — recall@k, MRR, and LLM-as-judge scoring for faithfulness and relevance. For agents that means real guardrails: per-agent identity and RBAC (Microsoft Entra ID), least-privilege tool access, prompt-injection mitigation, approval gates on anything business-critical, and monitoring of citation rates, retrieval accuracy, and token cost. If a plain, non-AI solution is more reliable or cheaper, I'll tell you up front. PORTFOLIO HIGHLIGHTS RAG Pipeline (Security Compliance) — End-to-end RAG over NIST security publications (SP 800-53 Rev 5 + AI RMF). Hybrid retrieval (vector + BM25) with a cross-encoder reranker, measured on a hand-labeled 95-question eval set: recall@5 0.63 → 0.83, MRR 0.48 → 0.64, holding at 10,000-chunk scale. Inline citations, grounded "I don't know", prompt-injection guardrails. Tech: Python, FastAPI, Azure Container Apps, Azure OpenAI, pgvector, Langfuse, CI/CD Automotive Documentation Platform — Multi-tenant system that automated a fully manual Google Sheets process. Syncs PDFs/images from field devices, organizes jobs, generates branded reports, and reconciles with QuickBooks invoices, eliminating missed billing. Built as a multi-tenant Azure SaaS. Tech: ASP.NET Core, Azure, QuickBooks API, OCR / PDF extraction Climate Data Integration Pipeline — One-off platform integrating 120+ government data sources, with scheduling, error handling, and monitoring. No template ETL tool could handle the source variation. Tech: Python, GCP, Apache Airflow, PostGIS Real-Time File Monitoring System — Event-driven Azure platform processing 100,000+ files. Self-healing recovery, parallel processing, sub-second latency. Tech: .NET 9, Azure Cosmos DB, Docker, Azure Functions LET'S TALK Top Rated Plus | 100% Job Success Score | $500K+ Delivered | 10+ Years on Upwork Send me your project details and I'll usually get back within a day, with real questions and a first take on how I'd approach it.

I’m a Senior Full-Stack Developer with 12+ years of experience building secure, scalable web and enterprise applications using C#, .NET Core, React, SQL Server, and Azure. I specialize in designing and developing RESTful APIs, modern React frontends, and high-performance backend systems. I’ve worked extensively in healthcare and financial domains, including caregiver management systems, core banking platforms, and international money transfer solutions. What I Bring ✔️ C#, .NET Core / .NET 6+, ASP.NET Core Web API ✔️ React.js, TypeScript, modern frontend architecture ✔️ Entity Framework Core, Dapper, SQL Server (12+ years) ✔️ Azure (App Services, Functions, Storage, CI/CD pipelines) ✔️ OAuth2 / OpenID Connect, JWT, role-based authorization ✔️ Clean Architecture, SOLID principles ✔️ Performance optimization & production debugging ✔️ OpenAI API integration (chatbots, text processing, automation) ✔️ HIPAA-aware healthcare systems Recent Work Currently building a caregiver management platform for home health agencies, connecting caregivers and patients with secure, compliant workflows and third-party integrations (Zoho, Smartsheet, Jotform, HHAeXchange, etc.). Work Style Self-sufficient and proactive Clear communicator Comfortable owning features end-to-end Experienced with remote teams (US & international) Available in EST timezone with flexible overlap If you’re looking for someone who can step into your project, understand the architecture quickly, and deliver production-ready solutions — let’s connect.

𝐖𝐢𝐭𝐡 𝐨𝐯𝐞𝐫 𝟏8 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐢𝐧 𝐌𝐢𝐜𝐫𝐨𝐬𝐨𝐟𝐭 𝐃𝐲𝐧𝐚𝐦𝐢𝐜𝐬 𝟑𝟔𝟓 𝐄𝐑𝐏 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬, 𝐈 𝐡𝐚𝐯𝐞 𝐬𝐮𝐜𝐜𝐞𝐬𝐬𝐟𝐮𝐥𝐥𝐲 𝐝𝐞𝐥𝐢𝐯𝐞𝐫𝐞𝐝 𝐦𝐨𝐫𝐞 𝐭𝐡𝐚𝐧 𝟑𝟓 𝐞𝐧𝐝-𝐭𝐨-𝐞𝐧𝐝 𝐄𝐑𝐏 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬. 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐬𝐞𝐫𝐯𝐞𝐝: Government, Public and private sector, FMCG, Energy, General Trading, Rental, Engineer-to-order (eto), Banking, Oil & Gas, and Trading. 𝐈 𝐬𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐞 𝐢𝐧 - Agile Project Management - FIT/GAP analysis, - Solution architecture - Custom development - Historical data migration, - Integration 𝐏𝐫𝐨𝐝𝐮𝐜𝐭 𝐞𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: - Microsoft Dynamics 365 Finance, PMA, SCM - Microsoft Dynamics 365 Business Central - Microsoft Dynamics 365 Project Operations - Microsoft Dynamics 365 Sales & Field Service - Power Bi 𝐂𝐮𝐬𝐭𝐨𝐦 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐡𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬: 1. Treasury management solution leveraging pma and budget modules 2. Xero integration with dynamics business central 3. Magento integration with dynamics business central 4. F&O integrations using azure blob storage (file based) 5. Upgrades from microsoft navision to dynamics business central 6. Upgrades from microsoft dynamics gp to business central 7. Migrate Quickbooks, sage, netsuite & gp to dynamics business central 8. Custom sftp bank integrations for statement uploads and eft/pad transactions 9. On perm business central

Thanks for reviewing my profile. I’m a Senior Software Engineer with 7+ years of experience building reliable web applications, backend systems, and cloud-based products. I work mainly with C#, .NET, Angular, React, Next.js, JavaScript, TypeScript, Node.js, Python, SQL Server, Supabase, PostgreSQL, MongoDB and AWS. My background includes API development, microservices, performance improvements, CI/CD pipelines, and maintaining production systems used by growing teams and businesses. I’ve also worked as a tech lead, managing developers, reviewing code, and helping turn business requirements into practical, scalable solutions. I also have experience working with AI agents and MCP concepts, helping connect LLM-based workflows with real tools, APIs, and business logic in a structured way. I build reliable, scalable software that solves real problems. Whether it’s a new product, an existing platform, or a backend challenge, I focus on clean execution, strong quality, and dependable delivery. Let's build amazing things together!

I'm Microsoft BI with 5 years of experience related to SQL Server. I've been working in all aspects of development within SQL Server. Initially I started as relational database developer and successfully I was moving more into Business Intelligence part of SQL Server. Currently I work as senior data warehouse developer . To my responsibilities belong business requirement gathering, data analysis, data modelling and then developing SSIS packages and SSAS cubes. 5 years of experience in analysis, design and development of client/server, web based and n-tier application. Database design. T-SQL Developement (writing queries and queries, developing stored procedures and functions). MS-BI Developement (SSIS, SSAS and SSRS). Datawarehouses design and implementation. 5 years of experience in developing windows applications, web applications, windows services and web services in Microsoft Visual Studio .Net IDE using C#.Net 4.0, VB.NET,ASP.NET, ADO.NET,Linq ,SQL Server and Silverlight/WCF. Worked extensively with Data Adapter, Dataset, Data reader as a part of ADO.NET to access and update database. Worked extensively with Crystalreport, Reportviewer. Good working knowledge in SQL Server Database design, Database maintenance, developing T-SQL queries, stored procedures, and triggers using SQL Server 2005. Good working knowledge with designer tools such as Rational Rose. Good working knowledge in designing Use Case, Class, Sequence, Collaboration, State, Component, Deployment, Activity diagrams using UML.

Full stack .NET and React developer who ships production software that holds up 5+ years. Real systems. Real consequences. What I build: → REST APIs and backend services in C# / ASP.NET Core / .NET 6–8 on SQL Server or PostgreSQL → React and TypeScript frontends — component libraries, performance-tuned, no shortcuts → Azure deployments with CI/CD pipelines (Azure DevOps, GitHub Actions, Docker) → Async data pipelines on AWS SQS for high-volume, latency-sensitive workloads → Clean Architecture systems designed to grow, not accumulate debt Where I've shipped: → Healthcare analytics (Cedar Gate Technologies, US) — HIPAA-compliant care management modules, clinical APIs, high-volume patient data pipelines serving payers and ACOs → Fintech — mutual fund platforms, SIP subscription flows, NAV calculations, e-Sewa payment gateway integration → Enterprise SaaS — real-time ops dashboards, legacy refactors, automated deployment pipelines How I work: I document before I build. I write tests before I ship. I ask the one question that saves three back-and-forth messages. I hold a Certified Scrum Master (CSM®) credential and Six Sigma Yellow Belt — I bring delivery discipline, not just code. My stack: C# · .NET 6/7/8 · ASP.NET Core Web API · React · TypeScript · Entity Framework Core SQL Server · PostgreSQL · MongoDB · Azure · AWS (SQS, S3, EC2) · Docker · Blazor · xUnit If you need a developer who owns the problem end-to-end and doesn't disappear after the first PR — let's talk.