Senior Software Engineer

AIM AI; Los Angeles (CA); Presencial; USD 140.000 - 210.000; Jornada completa

Descripción de la vacante

Aim AI is hiring a Full-Stack Engineer to own the core infrastructure for live voice calls. You will engineer low-latency systems, orchestrate back-end services, and work across WebSockets, WebRTC, and telephony integrations to deliver seamless call experiences.

You'll collaborate on an agent builder dashboard, contribute to developer tooling, and ensure security and reliability at scale in a fast-growing startup environment.

Formación

• 5+ years building production-grade systems; senior-level experience preferred.
• Hands-on with real-time technologies: WebSockets, WebRTC, streaming audio/video.
• Comfortable owning both backend and frontend components.
• Strong fundamentals in networking, latency optimization, and system design.
• Startup DNA: high ownership, execution bias, ship-fast mindset in low-politics environments.
• Proficiency in Node.js, TypeScript, Python, and Go; frontend with React/Next.js.
• Experience with telephony tech (Twilio, SIP, VoIP) and AI/voice stacks (TTS/LLMs).

Responsabilidades

• Architect and operate low-latency, high-throughput systems for live calls and audio streaming.
• Build backend orchestration services interfacing STT, TTS, LLMs, and telephony providers.
• Work hands-on with WebSockets, WebRTC, streaming pipelines, and real-time events.
• Contribute to the agent builder dashboard and developer tools (React/Next.js).
• Integrate deeply with Twilio, SIP trunks, VoIP, handling IVRs and call flows.
• Drive reliability, observability, failover, monitoring, and logging improvements.
• Enforce security and compliance best practices across the stack.

Conocimientos

Real-time tech

Backend development

Frontend development

Node.js

TypeScript

Python

Go

React

WebSockets

WebRTC

Twilio integration

VoIP familiarity

Herramientas

Twilio

SIP

VoIP

WebRTC

Descripción del empleo

Aim AI is a bootstrapped, profitable, and scaling fast with ~$5M ARR. We build ultra-realistic voice AI agents that power real phone conversations for businesses in sales, customer service, marketing, and beyond. Our platform handles live calls end-to-end, and every millisecond counts.

We're looking for aFull-Stack Engineer to own and evolve the core backbone of our system, the infrastructure that makes calls sound seamless (or breaks if we get it wrong).

What You'll Do

• Architect and operate low-latency, high-throughput systems for live phone calls and bidirectional audio streaming


• Build backend orchestration services (primarily Node.js / TypeScript, with Python or Go as needed) that integrate STT, TTS, LLMs, and telephony providers


• Work hands-on with WebSockets, WebRTC, streaming audio pipelines, and real-time event processing


• Contribute to our agent builder dashboard and developer tools (React / Next.js)


• Integrate deeply with Twilio, SIP trunks, VoIP systems, and carrier constraints. Also handling IVRs, transfers, DTMF, call drops, and compliance edge cases


• Anticipate scaling bottlenecks; drive improvements in reliability, observability, failover, monitoring, alerting, and logging


• Enforce security and compliance best practices across the stack

The Interesting Problems You'll Own

• Bridging decades-old telephony systems with modern real-time AI architectures


• Solving latency, jitter, and reliability at scale, where milliseconds determine success

What Makes You a Great Fit

• 5+ years building production-grade systems (senior-level experience strongly preferred)


• Hands-on experience with real-time technologies (WebSockets, WebRTC, streaming audio/video)


• Comfortable owning both backend and frontend


• Strong fundamentals in networking, latency optimization, and system design


• Startup DNA: high ownership, execution bias, ability to ship fast in a low-politics environment


• Opinionated yet pragmatic, you know when to push for elegance and when to ship


• Backend: Node.js, TypeScript, Python, and Go


• Frontend: React, Next.js


• Real-time: WebSockets, WebRTC


• Telephony: Twilio, SIP, VoIP


• AI/voice: SST, TTS, and LLMs

Bonus Points For

• Prior experience with telephony / VoIP systems


• Background in real-time audio or video infrastructure


• ML infra, model serving, or AI agent platforms


• Voice AI or conversational AI exposure

Why Join Aim AI?

• ~$5M ARR, bootstrapped, and growing quickly with production traffic that matters


• Extremely high ownership, low politics, ship fast, see impact immediately


• Work on cool voice AI where reliability directly drives customer outcomes


• If you're excited about building infrastructure that powers realistic AI phone calls at scale, we'd love to hear from you.