Senior Software Engineer-SIP, Golang, C++

Overview

Senior Software Engineer role focused on designing and developing high-throughput, mission-critical active-active SIP microservices.

What you'll do

• Design and architect high-throughput, stateless SIP microservices in Go to meet performance targets.
• Implement protocol translation layers for SIP-over-TCP/TLS to internal SIP-over-ZeroMQ services.
• Engineer concurrency models using ZeroMQ Router/Dealer socket pooling and thread-bridging patterns.
• Integrate distributed state and security, including cryptographic key rotation, leader election, and private key storage.
• Enforce reliability with throttling, distributed batch schedulers, and exponential backoff handling.
• Partner with Network and Infrastructure teams on load balancer routing frameworks, DNS SRV logic, and OpenTelemetry tracing.

What you'll need

• Knowledge of SIP/VOIP and related telecom protocols.
• Deep hands-on experience with Go (preferred) and proficiency in C++/C.
• Strong computer science fundamentals including data structures and algorithms.
• Deep understanding of distributed systems, multi-threading, concurrency control, stateless proxies, and FSMs.
• Hands-on expertise with networking/messaging protocols including gRPC and RabbitMQ.
• Background with distributed databases including Apache Ignite and GridGain.
• Practical knowledge of persistence/caching tools such as PostgreSQL, Redis, and ElasticSearch.

Details

• Location: Bangalore, India.
• Travel requirement: under 10%.
• Position type: Experienced.