# Backend Engineer - SDE 2 (Voice AI / Telephony Platform)

> Blue Machines AI · Bengaluru, India · — · Posted 2026-09-08

**Workplace:** on_site

**Department:** Engineering

## Description

SDE II, Backend — Voice AI & Telephony

Experience: 2–4 Years

Location: Bengaluru (Work from Office)

Team: Blue Machines

Role Overview

We’re looking for an SDE II (Backend) to help build high-scale, low-latency systems for our AI and voice platform. You’ll work on real-time backend systems that power live voice conversations — combining strong backend fundamentals with exposure to WebRTC, SIP-based telephony, and Voice AI.

Responsibilities

-   Build and maintain scalable microservices and backend systems that power real-time AI and voice workflows.
-   Contribute to system design — APIs, data models, deployment, and monitoring — alongside senior engineers.
-   Write performant, concurrent, fault-tolerant code at scale.
-   Implement observability and testing best practices (Datadog, Sentry, etc.).
-   Collaborate with product and AI teams on the platform’s multi-agent orchestration and automation layer.
-   Partner closely with the ML team to integrate in-house models, support benchmarking and observability, and help build the next generation of in-house AI models.

Requirements

### Must-Have Skills

-   2–4 years of backend development experience in Python or Java.
-   Strong grasp of system design, concurrency, and distributed systems.
-   Experience building scalable APIs or streaming systems.
-   Familiarity with WebRTC, SIP, RTP, or other real-time communication protocols.
-   Experience working with Voice AI or speech processing systems (ASR/TTS, real-time inference).
-   Experience integrating LLMs, vector DBs, or AI agent frameworks into production systems.
-   Experience with cloud environments (GCP/AWS) and containerized deployments (Kubernetes, Docker).
-   Sound understanding of databases (MongoDB, Redis, Postgres) and message queues (Kafka, Pub/Sub).

-   Collaborate with product and AI teams to evolve the platform’s **multi-agent orchestration and automation layer**.

## Apply

[Apply at Blue Machines AI](https://apply.workable.com/blue-machines-ai/j/EEB0D754E6/apply)

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