Md. Saddam H.

Founders and product teams don’t need another pair of hands. They need someone who can think clearly, make decisions, build, and take ownership. I’m a Software Engineer with 10+ years of experience turning complex business problems into production-ready software, SaaS products, APIs, and AI-powered systems. I’ve delivered 150+ software solutions for clients across 30+ countries, including teams in Switzerland, Germany, the United States, and Australia. Alongside client work, I build and ship my own SaaS, developer tools, and AI-powered products, from concept and architecture through launch and continuous improvement. 𝐖𝐡𝐚𝐭 𝐈 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 → 𝐋𝐚𝐧𝐠𝐮𝐚𝐠𝐞𝐬 & 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬: C#, .NET 10, ASP.NET Core, ASP.NET MVC, Web API → 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 & 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠: RESTful APIs, Clean Architecture, Layered Architecture, Vertical Slice Architecture, DDD, CQRS, Repository Pattern, Mediator Pattern, OOP, SOLID, DRY, KISS, YAGNI, Clean Code → 𝐃𝐚𝐭𝐚, 𝐏𝐞𝐫𝐬𝐢𝐬𝐭𝐞𝐧𝐜𝐞 & 𝐂𝐚𝐜𝐡𝐢𝐧𝐠: SQL Server, PostgreSQL, EF Core, Dapper, LINQ, Stored Procedures, In-Memory Caching, Distributed Caching → 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬: Azure, Azure DevOps, GitHub Actions, CI/CD → 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: Blazor, MudBlazor, Razor Pages, Bootstrap, Tailwind CSS → 𝐓𝐞𝐬𝐭𝐢𝐧𝐠: xUnit, NSubstitute, Fluent Assertions, Shouldly, Unit Testing, Integration Testing, Architecture Testing → 𝐀𝐏𝐈 & 𝐎𝐛𝐬𝐞𝐫𝐯𝐚𝐛𝐢𝐥𝐢𝐭𝐲: Swagger/OpenAPI, Scalar, API Versioning, Health Checks, Serilog → 𝐀𝐈 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠: OpenAI, Claude, Microsoft Agent Framework, Microsoft.Extensions.AI, Semantic Kernel, MCP Servers (C#), LLM Integration, RAG, Embeddings, Vector Search, pgvector, Qdrant, Pinecone, Tool Calling, AI Agents → 𝐀𝐈-𝐀𝐬𝐬𝐢𝐬𝐭𝐞𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Claude Code, ChatGPT Technology matters, but the business problem comes first. 𝐈 𝐜𝐚𝐧 𝐡𝐞𝐥𝐩 𝐰𝐡𝐞𝐧 → You have a product idea and need technical direction → You need an MVP or SaaS product built by someone who has shipped many → Your existing application needs modernization, new features, or better architecture → Your business relies on manual processes that could be automated → You want to add AI capabilities, APIs, or integrations to your product → Your team needs a senior engineer who owns outcomes, not just tickets I’m available for long-term contracts and selected product engagements with founders and software teams. If you’re building something and need an engineer who can take it from idea to production, send me a message here. I’m happy to talk through your project.