Technical Lead (C++ / Networking / Telephony Systems) in London
Technical Lead (C++ / Networking / Telephony Systems)

Technical Lead (C++ / Networking / Telephony Systems) in London

London Full-Time 60000 - 80000 £ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Lead a small team in developing cutting-edge VoIP and PBX systems using C++.
  • Company: Join a forward-thinking tech company with a focus on innovation and teamwork.
  • Benefits: Enjoy competitive pay, flexible remote work, and opportunities for professional growth.
  • Other info: Work in a dynamic environment with a commitment to diversity and inclusion.
  • Why this job: Make a real impact by guiding engineers and shaping the future of telephony technology.
  • Qualifications: Strong C++ skills, networking knowledge, and experience in leading teams.

The predicted salary is between 60000 - 80000 £ per year.

This is a hands‑on technical leader responsible for delivery, code quality, and the technical direction of a small team (~5 engineers). It requires strong C++ expertise and the ability to guide engineers working on complex VoIP and PBX systems. While primarily remote, occasional visits to the Bristol office or London are required.

What you will be doing:

  • Lead Scrum activities: sprint planning, task breakdown, tracking
  • Assign work and provide day‑to‑day technical guidance
  • Own and enforce code review standards
  • Write and refine user stories; improve the team’s story quality
  • Translate product requirements into engineering tasks
  • Ensure maintainability and consistency of the codebase
  • Act as an escalation point for complex technical issues

What you will bring to the role:

  • Strong C++ (C++17 minimum), hands‑on coding
  • Strong networking fundamentals (TCP/UDP)
  • Experience leading or mentoring engineers
  • Experience with multithreaded systems and debugging
  • Ability to work effectively in large, complex codebases
  • Ability to contribute to solution design and make pragmatic trade‑offs
  • Agile/Scrum experience with Jira/Atlassian tools
  • Ability to break down ambiguous requirements into deliverable work

Desirable:

  • Practical experience in VoIP or PBX systems
  • VoIP protocols (SIP, RTP, etc.)
  • Telephony/PBX systems: call routing, hunt groups, call park/pickup, feature interaction and state handling
  • Boost (especially Boost.Asio)
  • GitHub (PR workflows, reviews)
  • AI‑assisted development tools for coding, investigation, and code review
  • Kubernetes / containerized environments
  • FreeSWITCH
  • Real‑time / low‑latency systems experience
  • Performance tuning and system profiling

Diversity, Inclusion, and Equal Opportunity: We hire, promote, and compensate employees based on their ability to perform their job responsibilities, without regard to race, color, creed, religion, sex, gender, marital status, national origin, ancestry, age, citizenship, physical or mental disability, sexual orientation, or any other basis protected by applicable law (collectively referred to in our Code of Conduct as 'Protected Classes'). We do not tolerate employment discrimination in the workplace, and we are committed to making reasonable accommodations for identified disabilities or other limitations as required by all applicable laws. We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Technical Lead (C++ / Networking / Telephony Systems) in London employer: Intermedia Intelligent Communications

As a Technical Lead at our company, you will thrive in a dynamic and inclusive work environment that prioritises employee growth and collaboration. With a strong focus on innovation in C++ and telephony systems, we offer flexible remote working options alongside opportunities for professional development and mentorship. Our commitment to diversity and equal opportunity ensures that every team member is valued and empowered to contribute meaningfully to our projects.
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Contact Detail:

Intermedia Intelligent Communications Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Technical Lead (C++ / Networking / Telephony Systems) in London

✨Tip Number 1

Network like a pro! Reach out to your connections in the tech world, especially those who work with C++ or in telephony systems. A friendly chat can lead to insider info about job openings that aren't even advertised yet.

✨Tip Number 2

Show off your skills! Create a GitHub profile showcasing your C++ projects or contributions to VoIP systems. This gives potential employers a sneak peek into your coding style and problem-solving abilities.

✨Tip Number 3

Prepare for technical interviews by brushing up on your multithreading and networking fundamentals. Practice coding challenges related to these areas, as they’re likely to come up during the interview process.

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are proactive about their job search!

We think you need these skills to ace Technical Lead (C++ / Networking / Telephony Systems) in London

C++ (C++17 minimum)
Networking Fundamentals (TCP/UDP)
VoIP Systems
PBX Systems
Multithreaded Systems
Agile/Scrum Methodologies
Jira/Atlassian Tools
Solution Design
Boost (especially Boost.Asio)
GitHub (PR workflows, reviews)
AI-assisted Development Tools
Kubernetes / Containerized Environments
Real-time / Low-latency Systems
Performance Tuning
System Profiling

Some tips for your application 🫡

Show Off Your C++ Skills: Make sure to highlight your strong C++ expertise in your application. We want to see your hands-on coding experience, especially with C++17 or later. Don’t forget to mention any projects that showcase your skills!

Talk About Your Leadership Experience: Since this role involves leading a small team, share your experiences in mentoring or guiding engineers. We love to see how you've helped others grow and how you’ve tackled complex technical issues.

Be Clear on Your Networking Knowledge: Networking fundamentals are key for us, so make sure to detail your understanding of TCP/UDP and any relevant VoIP or PBX systems experience. This will help us see how you can contribute to our projects right away!

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’s super easy!

How to prepare for a job interview at Intermedia Intelligent Communications

✨Know Your C++ Inside Out

Make sure you brush up on your C++ skills, especially C++17 features. Be prepared to discuss your hands-on coding experience and how you've tackled complex problems in previous projects. They’ll likely want to see your ability to write clean, maintainable code.

✨Understand Networking Fundamentals

Since the role involves networking, get comfortable with TCP/UDP protocols and how they apply to VoIP and PBX systems. Be ready to explain how you’ve used these concepts in past projects, as this will show your depth of knowledge.

✨Showcase Your Leadership Skills

As a Technical Lead, you’ll need to demonstrate your experience in leading or mentoring engineers. Prepare examples of how you’ve guided teams through challenges, managed Scrum activities, and enforced code review standards.

✨Familiarise Yourself with Agile Practices

Since Agile/Scrum experience is crucial, make sure you can discuss your familiarity with tools like Jira and how you’ve contributed to sprint planning and task breakdowns. Highlight any specific instances where you improved team efficiency or story quality.

Technical Lead (C++ / Networking / Telephony Systems) in London
Intermedia Intelligent Communications
Location: London

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