Job Description

Experience:

3-6 Years

Location:

Bengaluru (Work from Office)

Team:

Blue Machines - Apna's Agentic AI Platform

About Blue Machines

Blue Machines by Apna is building the next generation of large-scale

Voice & AI Agent Infrastructure

, powering millions of real-time conversations, interviews, and workflow automations across industries. Our platform handles

Tens of millions of voice minutes

and integrates deeply with

telephony, AI models, and real-time streaming systems

-- all built for scale, reliability, and intelligence.

Role Overview

We're looking for a

Senior Software Engineer (Backend)

who can design and build

high-scale, low-latency systems

for our AI and voice platform. The ideal candidate will have strong backend engineering fundamentals, experience with distributed systems, and curiosity about

Voice AI, WebRTC, and SIP-based integrations

.

Responsibilities

Design and develop

scalable microservices

and backend systems that power real-time AI and voice workflows. Work closely with

AI, Infra, and Telephony

teams to enable new agent capabilities and integrations. Own

end-to-end system design

-- from architecture, APIs, and data models to deployment and monitoring. Optimize systems for

performance, concurrency, and fault tolerance

at high scale. Implement

best practices for observability, testing, and resilience

(Datadog, Sentry, etc.). Collaborate with product and AI teams to evolve the platform's

multi-agent orchestration and automation layer

.

Requirements

Must-Have Skills

3-6 years of backend development experience in

Python

or

Java

. Strong grasp of

system design, concurrency, and distributed systems

. Experience building

scalable, high-availability APIs or streaming systems

. Familiarity with

WebRTC, SIP, RTP

, or other real-time communication protocols. Experience with

cloud environments (GCP/AWS)

and

containerized deployments (Kubernetes, Docker)

. Sound understanding of

databases (MongoDB, Redis, Postgres)

and message queues (Kafka, Pub/Sub).

Good to Have

Exposure to

Voice AI, Speech Processing, or AI Agent frameworks

. Experience integrating

LLMs, vector DBs

, or real-time

AI inference systems

. Prior work on

AI-driven or telephony-driven platforms

at scale.

Benefits

Why Join Us

Work on

India's largest Voice AI and Agentic Automation platform

, shaping how enterprises interact with AI. Collaborate with a world-class team building

scalable real-time systems

that push latency and reliability limits. * Opportunity to grow into

architecture, infra, or AI platform leadership roles

as Blue Machines scales globally.