AI-Native Back End Engineer

ATTIX is a company focused on building innovative messaging platforms that integrate AI agents into conversations. The AI-Native Back End Engineer will be responsible for ensuring AI agents seamlessly participate in chats and developing business features that enhance team communication and productivity.

Responsibilities:

• Making AI agents feel native inside Vama conversations
• Building the business/workspace features for Vama
• Working across AWS and GCP
• Agent Integration including cross-cloud message routing and UX infrastructure
• Tool orchestration layer definition and exposure
• Context and memory management for agents
• API key management and model routing support
• Creating a workspace and organization system with admin controls
• Implementing business billing and subscription infrastructure
• Developing admin dashboard APIs for analytics and tracking
• Building a foundation for business integrations with webhooks and API access

Requirements:

• 4+ years of production backend experience, with meaningful Go experience (2+ years preferred, but depth of understanding matters more than years)
• LLM agent architecture knowledge — you understand tool use patterns, ReAct loops, context window management, memory systems, and agent orchestration frameworks. You've built with or on top of agent frameworks, not just called chat completion APIs
• Distributed systems fluency — you've built services that communicate over message queues, handle eventual consistency, and manage distributed state. Bonus if you've worked across multi-cloud architectures
• API design with gRPC or ConnectRPC — protobuf schemas, backward compatibility, RPC-based service interfaces
• Event-driven architecture — experience with NATS, Kafka, or similar. You understand pub/sub, queue groups, and at-least-once delivery
• Node.js proficiency — our agent runtime is Node.js. You need to be able to read, modify, and extend it
• Comfortable working across AWS and GCP — agent infrastructure runs on AWS, chat services on GCP. You'll bridge both daily
• You ship 3–5x using AI coding tools (Claude Code, Cursor, etc.). Non-negotiable. We will test for this
• Experience with open-source agent frameworks (LangChain, CrewAI, AutoGen, or similar) — ideally you've contributed to or built production systems on top of them
• Real-time communication experience — WebSocket, WebRTC, LiveKit, or similar
• Multi-tenancy / SaaS platform experience — you've built workspace or organization systems with isolation, billing, and admin tooling
• Cassandra or wide-column store experience — Vama's chat backend runs on Cassandra on GCP
• AWS experience (EKS, Lambda, SQS, S3) alongside GCP — multi-cloud fluency is a strong advantage
• Experience building developer platforms or bot frameworks