Senior Python Backend Engineer for A2A & AgentCore

Intellias; Poland; On-site; PLN 200,000 - 320,000; Full time

Job summary

Intellias is seeking a Senior Python Backend Engineer to build and integrate agent-to-agent communication on AWS AgentCore platforms. You will focus on Python backend development, A2A protocol implementation, agent discovery, registration, and scalable multi-agent interactions.

You will design robust backend services, implement REST and event-driven patterns (SSE, webhooks), and ensure secure, scalable communication between distributed agents.

Qualifications

• 5+ years backend engineering in Python or Go.
• API integration and routing experience.
• REST API implementation experience.
• Understanding of async/event-driven patterns (SSE, webhooks).

Responsibilities

• Design and implement backend services using Python and AWS AgentCore SDK.
• Build and maintain A2A integrations with AWS AgentCore Runtime and Gateway.
• Implement agent registration, target configuration, and agent discovery workflows.
• Develop and maintain Agent Card definitions and .well-known/agent.json endpoints.
• Implement A2A communication patterns using JSON-RPC 2.0 and event-driven architectures.
• Design and support agent invocation workflows between caller and target agents.
• Build asynchronous communication flows using SSE, webhooks, and push notifications.
• Develop REST APIs and backend services that enable reliable agent interaction and routing.
• Implement event lifecycle handling, task status tracking, and agent execution monitoring.
• Ensure secure and scalable communication between distributed agents and services.
• Collaborate with AI, platform, and security teams to support multi-agent ecosystem integration.
• Troubleshoot, test, and optimize backend services for performance, reliability, and scalability.
• Produce technical documentation for integration standards, APIs, and agent connectivity patterns.

Skills

Python

Go

API integration

REST API

Asynchronous systems

Event-driven design

Tools

AWS AgentCore SDK

JSON-RPC 2.0

SSE

OpenTelemetry ADOT

Job description

Intellias is seeking a Senior Python Backend Engineer to build and integrate agent-to-agent communication on AWS AgentCore platforms. You will focus on Python backend development, A2A protocol implementation, agent discovery, registration, and scalable multi-agent interactions.

You will design robust backend services, implement REST and event-driven patterns (SSE, webhooks), and ensure secure, scalable communication between distributed agents.