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For Companies At a Glance
- Tasks: Design and build a cutting-edge cloud-based voice communications platform.
- Company: Join a forward-thinking tech company in Bristol with a collaborative culture.
- Benefits: Enjoy flexible working, competitive salary, and opportunities for professional growth.
- Why this job: Shape the future of communication technology and work on exciting real-time systems.
- Qualifications: 5+ years in telephony systems and strong knowledge of SIP, RTP, and VoIP.
- Other info: Be part of a dynamic team with a focus on innovation and technical excellence.
The predicted salary is between 68000 - 85000 £ per year.
Location: Bristol
In House/Hybrid (must be within commutable distance of Bristol)
Employment Type: Full-time
Experience Level: Senior
Salary: £80k - £100k
About the Role
We are seeking an experienced Senior Telephony Engineer to design, build, and scale a robust, cloud-based voice communications platform. This role will focus on developing the core telephony infrastructure that powers programmable voice, call routing, real-time audio processing, and system reliability at scale. You will play a key role in shaping the architecture of a modern communications platform and will work closely with backend, DevOps, and AI teams to deliver high-quality, production-grade voice services.
What You’ll Do
- Architect and implement a scalable telephony infrastructure supporting inbound and outbound voice calls.
- Design call routing, session management, and failover strategies for high availability.
- Build and maintain real-time voice services using SIP, RTP, and WebRTC technologies.
- Develop APIs and internal tooling for call control, provisioning, and monitoring.
- Ensure low-latency, high-quality audio and reliable call delivery across regions.
- Collaborate with AI teams to integrate voice services with speech recognition, TTS, and conversational agents.
- Lead troubleshooting and optimization of complex telephony and networking issues.
- Define best practices for security, compliance, and observability within voice systems.
What We’re Looking For
- 5+ years experience working with telephony or real-time communications systems.
- Strong knowledge of SIP, RTP, VoIP, and call signaling protocols.
- Experience building or operating large-scale voice or communications platforms.
- Proficiency in at least one backend language (e.g., Python, Go, Java, or C++).
- Strong understanding of networking concepts (NAT traversal, codecs, latency, jitter).
- Experience with cloud infrastructure and distributed systems.
- Ability to lead technical decisions and collaborate across multiple engineering disciplines.
Nice to Have
- Experience with WebRTC media servers or SIP application servers.
- Familiarity with telecom regulations, number provisioning, and compliance requirements.
- Experience with monitoring real-time systems and call-quality metrics.
- Exposure to AI voice pipelines (ASR, TTS, real-time streaming).
Why Join Us
- Opportunity to build a foundational communications platform from the ground up.
- Work on complex, real-time systems at scale.
- Influence architecture and long-term technical direction.
- Flexible working arrangements and competitive compensation.
- Collaborative team environment with a strong engineering focus.
Senior Telephony Engineer employer: Narwhal Media Group (NMG)
Contact Detail:
Narwhal Media Group (NMG) Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Telephony Engineer
✨Tip Number 1
Network like a pro! Attend industry meetups, webinars, or tech conferences where you can connect with other professionals in the telephony and communications field. You never know who might have the inside scoop on job openings or can refer you directly to hiring managers.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repository showcasing your projects related to telephony systems, APIs, or any relevant coding work. This gives potential employers a tangible look at what you can do and sets you apart from the competition.
✨Tip Number 3
Prepare for interviews by brushing up on common telephony concepts and technologies like SIP, RTP, and VoIP. Practice explaining your past projects and how they relate to the role you're applying for. Confidence and clarity can make a huge difference!
✨Tip Number 4
Don’t forget to apply through our website! We love seeing candidates who are genuinely interested in joining our team. Tailor your application to highlight your experience with cloud infrastructure and real-time systems, and let us know why you’re excited about building a foundational communications platform with us.
We think you need these skills to ace Senior Telephony Engineer
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with telephony and real-time communications systems. We want to see how your skills align with the role, so don’t be shy about showcasing relevant projects or technologies you've worked with!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about building scalable telephony infrastructures and how your background makes you the perfect fit for our team. Keep it engaging and personal!
Showcase Your Technical Skills: When applying, be sure to mention your proficiency in backend languages and your understanding of networking concepts. We’re looking for someone who can lead technical decisions, so highlight any relevant experiences that demonstrate your expertise.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it shows us you’re keen on joining our team!
How to prepare for a job interview at Narwhal Media Group (NMG)
✨Know Your Tech Inside Out
Make sure you brush up on your knowledge of SIP, RTP, and VoIP protocols. Be ready to discuss how you've implemented these technologies in past projects, as well as any challenges you've faced and how you overcame them.
✨Showcase Your Problem-Solving Skills
Prepare to share specific examples of complex telephony or networking issues you've troubleshot. Highlight your thought process and the steps you took to resolve these problems, as this will demonstrate your analytical skills and technical expertise.
✨Understand the Bigger Picture
Familiarise yourself with cloud infrastructure and distributed systems, as well as how they relate to telephony. Be ready to discuss how you would design a scalable telephony infrastructure and the considerations that come with it.
✨Collaborate and Communicate
Since this role involves working closely with various teams, be prepared to talk about your experience collaborating across disciplines. Share examples of how you've effectively communicated technical concepts to non-technical stakeholders.
