Backend Engineer – LLM & Voice AI

📍 Remote (India) | 🕐 Full-Time | 💼 3+ Years Experience

🕸️ Website: www.featherhq.com

🧠 About Feather

Feather is reimagining how businesses use voice. We’re building a conversational AI platform powered by LLMs, focused on replacing outdated IVR and call center systems with natural, human-like voice agents. Backed by top-tier VCs, we’re in beta with our first customers and scaling fast.

We’re looking for a Backend Engineer who thrives across systems — from scalable APIs to inference pipelines — and wants to work on cutting-edge voice AI. You’ll help architect the backend infrastructure that powers real-time voice conversations, integrating LLMs and audio streaming tools like LiveKit.

🔧 What You’ll Do

• Build and scale core backend services for real-time voice AI
• Design APIs and event-driven systems to manage calls, sessions, and LLM interactions
• Work with OpenAI, LiveKit, and AWS to power voice agents at scale
• Develop job queues, data pipelines, and inference orchestration
• Optimize for low-latency, high-availability systems
• Contribute to system design, testing, and deployment automation

✅ What We’re Looking For

• 3+ years of backend experience (preferably in TypeScript or Python)
• Strong understanding of system design, async architectures, and cloud infrastructure (AWS)
• Hands-on experience with LLM APIs (OpenAI, Langgraph, etc.)
• Comfort working across distributed systems, queues, and service boundaries
• Proactive, product-aware, and ready to take ownership

🌟 Bonus Points

• Experience with LiveKit, Twilio, or voice streaming APIs
• Familiarity with speech-to-text (STT), text-to-speech (TTS), or WebRTC
• Knowledge of Temporal, LangGraph, or other workflow orchestration tools
• Experience building real-time apps or customer-facing tools

💼 What We Offer

• 💰 Competitive Salary + meaningful Equity
• 🌴 Paid vacation, plus national holidays
• 🤒 Flexible sick leave — no doctor’s notes required
• 🏡 Remote-first culture with flexible hours
• 🚀 Work directly with technical founders and help shape our roadmap
• 📈 Early-stage impact and growth path toward Tech Lead / Founding Engineer

If you’re excited by the idea of building infrastructure that powers human-like AI agents — and want your work to ship fast and matter — we’d love to talk.