Senior Python Engineer (MCP Protocol & Tool Integration)

Quick Facts

• Role: Senior Python Engineer (MCP Protocol & Tool Integration)

• Focus: Implement MCP protocol servers/clients and integrate agent tools in a cloud-native, production environment

Description

The role involves implementing MCP protocol servers and client-side tool integrations for an enterprise agent development platform. You will design agent tool integrations (function calling, tool schemas, parameter validation), build MCP target types (e.g., Lambda-as-tools and OpenAPI-to-MCP), and develop async HTTP services with streaming responses. You’ll also support capability negotiation, tool metadata/versioning, and AWS AgentCore Gateway connectivity.

Responsibilities

• Implement MCP protocol servers and clients, including tools/list and tools/call handling

• Design and maintain agent tool integrations using function calling, tool schema definition, and parameter validation

• Build and register MCP target types such as Lambda functions as tools, remote MCP servers, and OpenAPI-to-MCP translation

• Develop async HTTP services and streaming responses for MCP server/client communication

• Manage tool metadata: schema registration, capability tagging, and versioning

• Handle capability negotiation and Streamable HTTP transport within MCP

• Standardize agent tool integration patterns across the platform

• Support AWS AgentCore Gateway target registration for tool connectivity

Requirements

• 5+ years of Python engineering experience with agent/AI systems

• Hands-on experience implementing MCP servers or clients in a production agentic AI project (tools/list and tools/call handling, AWS AgentCore Gateway target registration, or Lambda-as-tool / OpenAPI-to-MCP translation)

• Experience building tool integrations for LLM agents (OpenAI functions, LangChain tools, or equivalent)

• Proficiency in Python async programming, async HTTP services, and streaming protocols

• Expertise in AWS Lambda development

• Understanding of agent tool integration patterns: function calling, tool schema definition, and parameter validation

Benefits

• Career development programs and mentoring

• Thought leadership and soft skills/well-being programs

• Certifications (Anthropic, Gemini, GCP, Azure, AWS) and English classes

• Stable pay and Employee Stock Purchase Plan (15% discount)

• Health insurance, MultiSport, and shopping vouchers

• Referral bonuses up to $2,000

• Hybrid-by-design with remote work opportunity within Poland; chance to work abroad up to 60 days annually

• Relocation opportunities and corporate/social/well-being events

• Note: benefits apply to employees; B2B contractor terms are agreed individually