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Agentic Systems Engineer – TypeScript, .NET, MCP
Work Life GroupPosted 10/21/2026full-timeRemote • Poland, Serbia, Romania, Bulgaria, Ukraine, AlbaniaMid-LevelSeniorWebsite
Core Competencies
Role fitCore Competencies
Use this summary to align your resume positioning with the role.
Demonstrates expertise in software architecture and modernization of legacy systems, with a strong focus on API design, modular architectures, and agentic development. Proven ability to lead technical initiatives in high-ambiguity environments while enforcing best practices such as SOLID principles and test-driven development.
Highest-signal resume keywords
Software ArchitectureTypeScriptAPI DesignAgentic DevelopmentTest-Driven Development
Tech Stack
Tools & technologiesAbout 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, including standardized Skills, Rules, and Commands
- Build and operate Model Context Protocol (MCP) servers exposing legacy APIs, services, and databases as typed, secure, AI-consumable tools
- Own contract-first API design between human intent and autonomous agent execution
- Review AI-generated pull requests for scalability, security, and maintainability
- Mandate test-driven development and characterization testing during refactoring
- Monitor and optimize agentic reasoning loops for cost, speed, and architectural integrity
Requirements
What you’ll need- 4+ 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
- 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
- Work across multiple products and technologies
- Growth pathways across engineering, product and leadership
- Remote-first work arrangement
- Full-time contract engagement
ATS Keywords
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Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills
Software ArchitectureAPI DesignModular ArchitectureTypeScript.NETNode.jsTest-Driven DevelopmentDependency InjectionHexagonal ArchitectureContract-Driven Interfaces
Soft Skills
Technical LeadershipHigh-Ambiguity ComfortOwnership
Tools & Technologies
Model Context Protocol (MCP)AI-Consumable ToolsLegacy APIsDistributed Systems
Industry Keywords
SaaS TransformationsScale-UpsPE-Backed Environments