Senior Software Engineer; Communications Platform

Remote / Online - Candidates ideally in
Crawley, West Sussex, RH11, England, UK

Listing for: Intermedia Intelligent Communications

Remote/Work from Home position
Listed on 2026-06-08

Job specializations:

Software Development
Senior Developer, Software Engineer

Salary/Wage Range or Industry Benchmark: 125000 - 150000 GBP Yearly GBP 125000.00 150000.00 YEAR

Position: Senior Software Engineer (Real-Time Communications Platform)

Senior Software Engineer (Real-Time Communications Platform)

Location:

Remote (remote with occasional onsite visits to Bristol office or London)

Intermedia is looking for a Senior Engineer working on a large-scale real-time communications platform, focusing on C++ services, networking and system reliability. Experience in VoIP/PBX systems is desirable.

What you will be doing

Design, develop, and maintain C++ (C++17+) services
Implement and troubleshoot networking and real-time communication flows
Work within and evolve an existing large codebase
Collaborate with QA and product on behavior and edge cases
Participate in code reviews and promote engineering best practices
Contribute within Agile processes (Scrum, Jira)

What you will bring to the role

Strong C++ (C++17 minimum), STL knowledge
Solid networking fundamentals (TCP/UDP, sockets)
Experience with multithreaded/concurrent systems
Ability to understand and maintain complex legacy systems
Experience with Agile and Jira/Atlassian tools

Bonus Skills

Practical experience in VoIP or PBX systems
VoIP protocols: SIP, RTP/RTCP, SDP, WebRTC
Telephony/PBX systems: call routing, hunt groups, call park/pickup, feature interaction and state handling
Boost (especially Boost.

Asio)
Git Hub (PR workflows, code reviews)
AI-assisted development tools (coding, debugging, analysis)
Kubernetes / containerised environments
Free SWITCH
Network analysis tools (Wireshark, tcpdump)
Performance profiling and optimisation
Scripting or Python

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. We do not tolerate employment discrimination in the workplace and are committed to making reasonable accommodations for identified disabilities.

We are an equal opportunity employer and value diversity at our company.

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