Senior Backend Engineer

About the Role

Join a trailblazing team developing next-gen voice AI that's revolutionizing phone-based sales. This AI agent holds natural, open-ended conversations and is remarkably effective-outperforming human call center reps in conversion rates, thanks to a highly customizable and responsive architecture. Backed by $6 million in seed funding from a leading venture firm, we're building a world-class engineering team in San Francisco.

What You'll Do

This is a hands-on leadership role for someone ready to make an impact. You'll work closely with the founding team to redesign and scale the backend systems powering millions of daily phone conversations. You'll also help grow the engineering team, mentor junior developers, and play a key part in defining the technical roadmap.

Key Responsibilities

Architect and scale backend infrastructure to handle real-time audio interactions

Build and maintain robust public APIs for partner integrations

Develop connectors to CRMs, dialers, scheduling tools, and custom APIs

Collaborate with other backend engineers on real-time communication systems

Mentor junior team members and contribute to hiring efforts

Coordinate with DevOps to optimize deployment and scalability

Support frontend developers building the user-facing web app

Partner with machine learning engineers to integrate proprietary AI models

What We're Looking For

5 -7 years of experience designing and scaling backend systems

Strong track record building high-throughput, public-facing APIs

Previous experience in a fast-paced startup is a plus (Seed or Series A+ preferred)

Deep expertise in Python or Go

Clear and effective technical communication skills