Backend Developer

EU REMOTE / OUTSIDE RU (KZ, GE, AM, PL, RS, CY) Responsibilities Develop backend services using Python for agent communication flows Implement REST API endpoints and routing logic Integrate AWS AgentCore Runtime and Gateway features, including Agent Card registration and target configuration Develop A2A agent invocation flows using caller and target template integration Implement the A2A protocol wire format using JSON RPC 2.0 Support Server Sent Events (SSE) task lifecycle events and push notification flows Author Agent Card JSON schemas and implement the /.well-known/agent.json endpoint Requirements 3+ years of experience in Python or Go backend engineering Experience with API integration and routing Experience with agent based or microservice communication patterns Experience with REST API implementation, including building and maintaining endpoints Understanding of asynchronous and event driven architectures, including SSE and webhooks Experience with Python, including asynchronous programming Experience with the AgentCore SDK and REST APIs Experience with AWS AgentCore Runtime and Gateway Understanding of A2A agent invocation patterns Understanding of the A2A protocol wire format, including JSON RPC 2.0, SSE task lifecycle events, and push notifications Experience authoring Agent Card JSON schemas and implementing the /.well-known/agent.json endpoint Nice to have AWS AgentCore Gateway template integration validation AWS Bedrock multi agent invocation patterns SSE event streaming, including task lifecycle events and push notifications OpenTelemetry trace propagation across A2A agent hops, including ADOT