Rimsha Khatoon
Recruiter
Voice Engineer
Voxvalley Technologies Pvt Ltd
Active
Job Description
Voice Engineer
Job Details
· Job Sector: IT, Software, Analytics
· Job Type: Permanent
· Working: Hybrid (Office + Home)
· Experience: 4 - 8 Years
· Notice Period: 1 Month
· No. of Vacancies: 1 Vacancy
Salary & Fee Details
· Candidate Salary Range: Rs. 35,00,000 - 45,00,000
Position Details
· Job Title: Voice Engineer
· Job Type: Full-time
· Location: Hyderabad, Telangana, India
· Experience: Minimum 4 years (4-8+ years preferred for Senior level)
· Department: Product Engineering – Voice / CPaaS
Company Overview
A global telecom software provider empowering operators, MVNOs, aggregators, and enterprises across 20+ countries. With over a decade of innovation in CPaaS, UCaaS, CCaaS, and eSIM solutions, the company delivers high-performance communication platforms that drive digital transformation.
Flagship products include IP-PBX, CPaaS white-label platforms, and eSIM provisioning systems, serving top telecom brands across India, the Middle East, Africa, Europe, and North America. The company operates with an Agile development approach, strong technical leadership, and a 24/7 global support framework.
About the Role
We are seeking a Voice Engineer (Mid-level to Senior) with strong expertise in C/C++ programming, VoIP technologies, and Linux systems. You will play a key role in building and optimizing next-generation Voice Engine platforms.
This role involves end-to-end development, debugging, optimization, and deployment of real-time voice services with a focus on scalability, low-latency performance, reliability, and operational excellence. Ideal candidates will demonstrate strong systems-level skills (POSIX APIs, multithreading, socket programming), hands-on protocol knowledge (SIP, RTP/RTCP, SDP negotiation), and experience with voice codecs and real-time audio processing.
Key Responsibilities
· Design, develop, and maintain VoIP-based voice applications and services with a focus on reliability and performance.
· Develop high-performance components in C/C++ on Linux for low-latency voice processing, including multithreaded and real-time code.
· Implement and troubleshoot SIP, RTP/RTCP, and voice codec flows (G.711, G.729, Opus, etc.), including SDP and NAT traversal handling.
· Debug and resolve complex voice, signaling, and media issues across multiple layers using tools like Wireshark, tcpdump, gdb, strace, perf, and valgrind.
· Integrate and optimize back-end components such as MySQL and Redis for state, call metadata, and real-time lookups.
· Manage deployments and observability using AWS, Docker, container orchestration (Kubernetes preferred), and CI/CD pipelines.
· Collaborate closely with Product, QA, DevOps, and Support teams to ensure stable releases, runbooks, and 24/7 operational readiness.
· For Senior-level candidates: lead design reviews, mentor junior engineers, drive technical decisions, and take ownership of major modules and performance goals.
· (Optional) Configure and manage Kamailio, OpenSIPS, and RtpProxy for SIP routing and media handling; tune SBCs and NAT traversal mechanisms.
Requirements
Required Skills
· Minimum 4 years of experience in VoIP or Voice Engineering; 4-6 years typical for Mid-level, 6+ years preferred for Senior.
· Proficiency in C/C++ and Linux systems programming (POSIX APIs, pthreads, real-time scheduling).
· Strong understanding of SIP, RTP/RTCP, SDP, and VoIP call flows, including SIP trunking and session negotiation.
· Experience with voice codecs such as G.711, G.729, Opus, and real-time audio processing.
· Hands-on experience with MySQL, Redis, and service design for low-latency access.
· Familiarity with cloud and container tooling: AWS, Docker, Kubernetes, and Git.
· Excellent debugging, profiling, performance tuning, and problem-solving skills; comfortable with observability and load-testing.
· Experience with network fundamentals (TCP/UDP, NAT, STUN/TURN/ICE) and troubleshooting tools (Wireshark, tcpdump).
Good to Have
· Hands-on experience with Kamailio, OpenSIPS, PJSIP, or RtpProxy.
· Knowledge of SBCs, NAT traversal, and STUN/TURN/ICE mechanisms.
· Exposure to WebRTC, SRTP/TLS, GStreamer, or media frameworks.
· Experience with microservices architecture, Kubernetes, and CI/CD pipelines for production deployments.
· Familiarity with observability stacks (Prometheus, Grafana), and logging/alerting best practices. Make it good concise to post in indeed
Voice Engineer (VoIP / C++ / Linux) – Hyderabad | Hybrid
Hyderabad, India (Hybrid)
Full-Time | Permanent
Salary: ₹35–45 LPA
Experience: 4–8 Years
We are hiring a Voice Engineer to develop and optimize next-generation VoIP and CPaaS solutions for a global telecom technology company serving customers across 20+ countries.
Key Skills
✔ C/C++ Development
✔ Linux Systems Programming
✔ VoIP Technologies (SIP, RTP/RTCP, SDP)
✔ Voice Codecs (G.711, G.729, Opus)
✔ MySQL & Redis
✔ AWS, Docker, Kubernetes
✔ Network Troubleshooting & Performance Tuning
Responsibilities
- Design and develop high-performance VoIP applications.
- Build scalable, low-latency voice processing solutions.
- Troubleshoot SIP signaling, media flows, and network issues.
- Optimize system performance and reliability.
- Collaborate with Product, QA, DevOps, and Support teams.
Preferred
- Kamailio, OpenSIPS, PJSIP, RtpProxy
- WebRTC, SRTP/TLS
- Prometheus, Grafana
- CI/CD and Microservices Architecture
Requirements
- 4–8 years of Voice/VoIP Engineering experience.
- Strong expertise in C/C++ and Linux.
- Deep understanding of SIP, RTP/RTCP, and VoIP call flows.
- Experience with cloud and container technologies.
Apply now if you're passionate about building scalable real-time communication platforms and solving complex voice engineering challenges
Job Type: Full-time
Pay: ₹3,500,000.00 - ₹4,500,000.00 per month
Work Location: Hybrid remote in Hyderabad, Telangana
