Senior Agentic Systems Architect (TypeScript, .NET, MCP) - Remote

Want to design the architecture that lets AI agents safely refactor, test and ship production code? Then let's talk. Our client acquires enterprise software companies and turns them into AI-native, profitable, scalable businesses. They are a remote-first, AI-forward team spread across the globe, offering high ownership, flexibility and impact, work across multiple products and technologies, and growth pathways across engineering, product and leadership. The job: transform a 10+ year legacy codebase into a high-velocity, agent-operable architecture, at the intersection of software architecture, AI-agent orchestration and engineering governance. Contract Type: Contract, full-time Location: Fully remote from Eastern Europe, working US morning hours (Scrum). What you'll do Agent-operable system architecture Decompose legacy monoliths into agent-readable, modular systems with strict boundaries and single responsibility Lead incremental modernization using the Strangler Pattern, wrapping legacy logic in modern, contract-driven interfaces Enforce SOLID principles, Dependency Injection, and Hexagonal Architecture to ensure deterministic AI execution and low regression risk Agentic framework & MCP leadership Architect and maintain the agent context layer: standardized Skills, Rules, and Commands for AI-driven engineering workflows Build and operate Model Context Protocol (MCP) servers exposing legacy APIs, services, and databases as typed, secure, AI-consumable tools Own contract-