Job Description

Key Responsibilities:

- Design and architect high-throughput, stateless SIP microservices using Go, achieving strict performance targets such as 5,000+ TPS and sub-15ms latency budgets.

- Implement complex protocol translation layers to convert inbound SIP-over-TCP/TLS traffic from load balancers into high-speed SIP-over-ZeroMQ traffic for internal stateless services.

- Engineer advanced concurrency models utilizing ZeroMQ Router/Dealer socket pooling and internal thread-bridging patterns to prevent mutex bottlenecks and ensure thread-safe message passing under heavy load.

- Integrate distributed state and security mechanisms, including automated cryptographic key rotation using discovery tools for leader election and secured vaults for private key storage.

- Enforce surge protection and reliability by building multi-layered throttling, distributed batch schedulers, and exponential backoff handling

- Partner with Network and Infrastructure teams to define advanced load balancer routing frameworks, DNS SRV query logic, and implement distributed tracing (Open Telemetry) for end-to-end observability.

Basic Requirements

Required Skills & Experience:

- Knowledge of SIP/VOIP & related telecom protocols.

- Deep hands-on experience in Golang (preferred) and proficiency in c++/c

- Strong computer science fundamentals, data structures, and algorithms.

- Deep understanding of distributed systems,



multi-threading, concurrency control, stateless proxies and Finite State Machines (FSM).

- Hands-on expertise with networking and messaging protocols including gRPC and RabbitMQ.

- Strong background with distributed databases like Apache Ignite and Grid Gain.

- Practical knowledge of persistence and caching solutions such as PostgreSQL, Redis, and Elastic Search.

- Excellent written and verbal communication skills for technical documentation and explaining complex ideas.

- Industry Experience - 8+ years

Travel Requirements

Under 10%

Relocation Provided

None

Position Type

Experienced

Referral Payment Plan

Yes

EEO Statement

Motorola Solutions is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion or belief, sex, sexual orientation, gender identity, national origin, disability, veteran status or any other legally-protected characteristic.

We are proud of our people-first and community-focused culture, empowering every Motorolan to be their most authentic self and to do their best work to deliver on the promise of a safer world. If you’d like to join our team but feel that you don’t quite meet all of the preferred skills, we’d still love to hear why you think you’d be a outstanding addition to our team.

📌 Senior Staff Software Engineer (India)
🏢 Motorola Solutions
📍 India