Enterprise engineering teams exposing internal databases, APIs, and SaaS tools to Claude Desktop, Cursor, Google ADK, and custom AI agents frequently search to hire a freelance Model Context Protocol (MCP) server & SDK programmer. I am Aldian Fazrihady, a Senior Freelance AI Application Engineer and Full Stack Programmer available via Upwork.
Core Model Context Protocol (MCP) Engineering Capabilities
- Production Python (`FastMCP`) & TypeScript MCP Servers: Architecting MCP servers over `stdio`, Server-Sent Events (SSE), and Streamable HTTP transports with strict JSON Schema tool definitions, resources, and reusable prompt templates.
- OAuth 2.1, RBAC & Tenant-Scoped MCP Security: Enforcing per-user OAuth 2.1 tokens, fine-grained permission scopes, human-in-the-loop confirmation gates for mutating tools, and immutable audit logging.
- Legacy System MCP Wrappers: Bridging FileMaker, Salesforce, PostgreSQL, Jira, GitHub, and internal REST/gRPC APIs into clean, context-efficient MCP tools.
Frequently Asked Questions
How do you prevent an MCP server from overflowing the LLM context window?
I design paginated, filterable MCP tools with concise structured summaries and lazy resource URIs so agents retrieve only the exact records and fields required for the current reasoning step.
How can we hire you as a freelance MCP server programmer?
Message me on Upwork.