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Technical Leadership & Team Management
Preferred Skills
Job Description
Team Lead, Software Developer in Test
Department: Development & Engineering
Employment Type: Full Time
Location: United Kingdom
Reporting To: Dominic Ridley
Description
**ALL CANDIDATES MUST BE LOCATED IN THE UK**
About Intermedia
About Intermedia
Are you looking for a company where YOUR VOICE is heard? Where you can MAKE A DIFFERENCE? Do you THRIVE in a FAST-PACED work environment? Do you wake every morning EXCITED to work with GREAT PEOPLE and create SUCCESS TOGETHER? Then Intermedia is the place for you.
Intermedia has established itself as a leading provider of cloud communications and collaboration tech that allows companies to connect better. We have a strong track record of growth, profitability, and creating an environment where everyone matters. Everyone. While we are fast-paced and admittedly a bit intense, we promise that you won’t be bored. You will find Intermedia is a place where you can indulge your passion for creating and supporting great cloud technology. What’s more, we always look to promote from within and have many employees who have been with us 10, 15, and 20+ years!
Culture at Intermedia is built on teamwork and transparency. We hold each other accountable and always have each other’s back!
Are you ready to make your mark?
About the Role:
Intermedia is seeking an experienced Software Development Engineer in Test (SDET) to ensure the quality and reliability of our Hosted PBX (HPBX) Voice Platform.
This role focuses on automated testing of real-time VoIP systems, with emphasis on protocol behavior, network interactions, and system reliability under load. You will contribute to test design, CI/CD integration, and troubleshooting of issues across distributed components, using both traditional and AI-assisted approaches. You will also provide technical guidance and leadership to the members of the team.
Intermedia is seeking an experienced Software Development Engineer in Test (SDET) to ensure the quality and reliability of our Hosted PBX (HPBX) Voice Platform.
This role focuses on automated testing of real-time VoIP systems, with emphasis on protocol behavior, network interactions, and system reliability under load. You will contribute to test design, CI/CD integration, and troubleshooting of issues across distributed components, using both traditional and AI-assisted approaches. You will also provide technical guidance and leadership to the members of the team.
Key Responsibilities
Technical Leadership & Team Management
- Design and maintain automated tests across API and end-to-end system layers
- Integrate test suites into CI/CD pipelines (e.g. GitHub Actions, Jenkins)
- Analyze failures using logs, metrics, and network traces (tcpdump, Wireshark, pcap
- Validate VoIP call flows and signaling behavior
- Execute load and reliability tests; define and monitor quality metrics
- Apply appropriate testing strategies (functional, integration, system-level) to ensure coverage and reliability
- Use AI-assisted tools to improve test coverage and failure analysis
- Collaborate with development teams to improve testability and system reliability
- Work across multiple areas with minimal supervision and clear ownership of deliverables
- Work in Linux environments to deploy, configure, and debug systems
- Track and manage defects using Jira
- Provide technical guidance and leadership to the members of the team
Skills, Knowledge & Expertise
Technical Skills
- Strong programming experience in Python
- Experience with C/C++ preferred
- Experience with test automation frameworks (e.g. pytest or equivalent)
- Experience with CI/CD systems (e.g. GitHub Actions, Jenkins)
- Strong Linux experience
- Solid understanding of IP networking fundamentals (TCP/UDP, routing, NAT)
- Hands-on experience with tcpdump, Wireshark, and pcap analysis
- Experience testing and troubleshooting network-intensive systems
- Experience with API and system-level testing
- Ability to debug issues using logs, metrics, and traces
- Experience with SQL databases
- Practical use of AI tools for development or testing workflows
- Strong understanding of the software development lifecycle and quality engineering practices
- Professional experience in complex or distributed systems
- Ability to clearly communicate technical issues and debugging findings
- Ability to priorities work based on impact and system behavior
- Bachelor’s or Master’s degree in Computer Science (or equivalent)
Preferred Skills
- Experience with VoIP/SIP systems and call flows, or ability to quickly ramp up in the telecom domain
- Understanding of PBX/UC call features and behavior (e.g. call park, pickup, transfer, hunt groups, voicemail)
- Experience with voice quality analysis (e.g. MOS, jitter, packet loss, latency)
- Experience with load and performance testing under high traffic conditions
- Familiarity with observability tools (e.g. Grafana, Kibana)
- Experience with test reporting tools (e.g. Allure)
- Experience with Python’s asyncio module
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.