Department: Voice & AI Infrastructure About Us Jobix.ai builds real-time voice systems that power modern AI communication.
Our platform combines programmable telephony, low-latency audio streaming, and multilingual TTS/STT pipelines — all built on a Node.js backbone.
This role focuses on taking technical ownership of critical voice infrastructure and helping shape its evolution. Role Overview We’re looking for an experienced engineer to work on the core voice platform, ensure its reliability, and drive its technical growth.
You’ll work on real-time systems with strict performance requirements, collaborate closely with the engineering team, and become a key point of expertise for voice and streaming infrastructure. Responsibilities * Take ownership of existing voice and telephony systems, including: * Real-time TTS and STT streaming * Inbound and outbound programmable call handling * Browser widget integrations for voice calls * Improve and extend backend services for performance, scalability, and maintainability. * Implement new voice-related features end to end, from signaling to audio delivery. * Ensure production systems are stable, observable, and well-documented. * Act as a technical counterpart for other teams when issues or new requirements arise. * Contribute to architectural decisions and long-term infrastructure direction.
Requirements * 5+ years of backend development experience with strong Node.js skills. * Proficiency with NestJS, Next.js, and React. * Experience with Prisma ORM and Redis for caching and real-time data. * Solid understanding of real-time systems and event-driven architectures. * Strong knowledge of telephony protocols, including: * SIP (Session Initiation Protocol) for signaling * RTP (Real-time Transport Protocol) for audio streaming * Familiarity with SDP negotiation, NAT traversal, and media routing * Experience working with VoIP or telephony platforms (e.g., Asterisk, FreeSWITCH, Kamailio, Twilio, or similar). * Familiarity with TTS/STT streaming and audio processing pipelines. * Ability to quickly understand and work with complex existing systems. * Proactive and reliable — takes ownership and solves problems effectively. * Clear communication skills for collaborating with distributed teams.
Nice to Have * Experience with WebRTC, ICE/STUN/TURN, or real-time browser communication. * Knowledge of audio codecs (Opus, G.711, G.729) and media handling. * Background in SIP trunking, call routing, or SBCs (Session Border Controllers). * DevOps skills (Docker, Kubernetes, CI/CD, monitoring, load testing). * Experience building scalable, low-latency voice infrastructure in production.
Why Join This is a high-impact engineering role working on technically demanding real-time systems at the heart of our Ai products.
You’ll have meaningful ownership, real responsibility, and the opportunity to work deeply with modern telephony technologies, real-time streaming, and AI voice pipelines. Apply If this matches the kind of work you’re looking for, send us your CV and a short note on your relevant experience. hr@jobix.ai
We value clarity, technical ability, and initiative.
