Senior Agentic Systems Architect – TypeScript, .NET, MCP

Work Life Group

. Decompose legacy monoliths into agent-readable, modular systems with strict boundaries and single responsibility .

Posted 10/21/2026full-timeRemote • Poland, Serbia, Romania, Bulgaria, Ukraine, AlbaniaSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in software architecture and platform engineering, with a strong focus on modernizing legacy systems and implementing modular architectures. Proficient in API design and agentic development, ensuring high-quality, production-grade AI solutions.

Highest-signal resume keywords

Software ArchitectureTypeScript.NETNode.jsAPI Design

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Legacy System ModernizationModular ArchitectureTest-Driven DevelopmentDependency InjectionHexagonal ArchitectureAgentic DevelopmentMCPLLM ToolingContract-Driven InterfacesSOLID Principles

Soft Skills

Technical LeadershipHigh-Ambiguity ComfortOwnership

Tools & Technologies

Model Context ProtocolDistributed SystemsProduction-Grade AI

Industry Keywords

SaaS TransformationsScale-UpsPE-Backed Environments

Tech Stack

Tools & technologies

Distributed SystemsJavaScriptNode.jsTypeScript.NET

About the role

Key responsibilities & impact

Decompose legacy monoliths into agent-readable, modular systems with strict boundaries and single responsibility
Lead incremental modernization using the Strangler Pattern and contract-driven interfaces
Enforce SOLID principles, Dependency Injection, and Hexagonal Architecture
Architect and maintain the agent context layer with standardized Skills, Rules, and Commands
Build and operate Model Context Protocol (MCP) servers exposing legacy APIs, services, and databases as typed, secure tools
Own contract-first API design for human intent and autonomous agent execution
Act as architectural gatekeeper for AI-generated pull requests
Mandate test-driven development (TDD) and characterization testing during refactoring
Monitor and optimize agentic reasoning loops for cost, speed, and architectural integrity

Requirements

What you’ll need

7+ years in software architecture, platform engineering, or technical leadership
Proven experience modernizing large, undocumented legacy systems
Strong hands-on expertise with TypeScript, .NET, and Node.js
Strong background in API design, distributed systems, and modular architectures
Practical experience with agentic development, MCP, LLM tooling, or AI-assisted engineering
Bias toward clean code, deterministic systems, and production-grade AI
Experience with remote-first or globally distributed teams (nice to have)
Background in SaaS transformations, scale-ups, or PE-backed environments (nice to have)
Comfort operating in high-ambiguity, high-ownership settings (nice to have)

Benefits

Comp & perks

High ownership, flexibility and impact
Growth pathways across engineering, product and leadership
Remote-first work arrangement
Work across multiple products and technologies