Senior Python Engineer (MCP Protocol & Tool Integration)

Quick Facts

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

Description

We are hiring a Senior Python Engineer to implement MCP protocol servers and agent tool integrations for an enterprise agent development platform. You will build MCP servers/clients (including tools/list and tools/call), design async HTTP services with streaming responses, and create/maintain tool integrations using function calling, tool schema definition, and parameter validation.

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 AWS 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, including schema registration, capability tagging, and versioning
• Handle capability negotiation and Streamable HTTP transport within the MCP protocol
• Collaborate with engineering teams to standardize agent tool integration patterns across the platform
• Support AWS AgentCore Gateway target registration for agent tool connectivity

Requirements

• 5+ years of Python engineering experience with agent/AI systems
• Hands-on experience implementing MCP servers or clients in production agentic AI projects (e.g., tools/list and tools/call handling, AWS AgentCore Gateway target registration, Lambda-as-tool / OpenAPI-to-MCP translation)
• Experience building tool integrations for LLM agents (e.g., 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, including function calling, tool schema definition, and parameter validation

Benefits

• Hybrid by design mode with opportunity to work remotely within Poland
• Chance to work abroad for up to 60 days annually
• Business-driven relocation opportunities
• Career development programs and mentoring
• Thought leadership and soft skills / well-being programs
• Certifications (Anthropic, Gemini, GCP, Azure, AWS) and English classes
• Stable pay
• Employee Stock Purchase Plan with a 15% discount
• Benefits package (health insurance, MultiSport, shopping vouchers)
• Referral bonuses up to $2,000
• Office perks (entertainment/relax zones, table tennis/football, free snacks and coffee)
• Corporate, social and well-being events
• Contractors considered (B2B terms agreed individually); benefits listed above for employees only
• Only selected candidates will be contacted