Join to apply for the Telecoms Engineer role at The Investigo Group.
Location: Hybrid — 2 days on‑site per week in Sandbach, Cheshire.
Job type: Full‑time, Permanent (37.5 hours).
Salary: Competitive, based on experience + benefits + package.
Security Clearance
While a current Security Clearance is not required at the time of application, successful candidates will need a Security Check (SC) clearance. To be eligible:
* Right to work in the UK.
* Live in the UK continuously for the past 5 years.
* Not have spent more than 6 months outside the UK during that period.
* Be willing to undergo security vetting as part of the onboarding process.
About Us
The Investigo Group (TIG) is a dynamic coalition of tech firms specialising in Platform, Software, Data, AI and other cutting‑edge technology solutions. Our portfolio spans B2B products and services, with a strong focus on secure, user‑centric applications across regulated and critical environments.
About You
You are a telecoms engineer passionate about building resilient, secure communication systems. You are hands‑on, proactive, and enjoy solving complex infrastructure challenges in a collaborative environment.
About the Role
You will join our technical platform team, supporting the development and evolution of our secure voice and communications infrastructure. Responsibilities include:
Key Responsibilities
* Configure, maintain and optimise Asterisk‑based systems.
* Manage and troubleshoot SIP registrations, call routing and VoIP infrastructure.
* Monitor and enhance performance, resilience and security of telecom services.
* Develop and support API integrations between telecom platforms and backend systems.
* Implement call‑flow logic, dialplans and routing rules for operational efficiency.
* Investigate and resolve telecom‑related incidents and performance issues.
* Contribute to documentation, process improvement and technical best practice.
* Collaborate with cross‑functional teams (Platform, Development, Security) to deliver new capabilities.
Success in This Role Looks Like
* Delivering a resilient, stable telecom platform with strong uptime and minimal incidents.
* Documented, secure integrations between voice and backend systems.
* Established monitoring and reporting processes to maintain performance and compliance.
* Demonstrated collaboration across Platform, Cloud and Development teams.
Why Join Us
* Be part of a team that underpins secure communications across TIG.
* Work with modern VoIP, SIP and cloud‑native telecom technologies.
* Contribute to the evolution of next‑generation secure communications.
* Hybrid working with flexibility around our Sandbach office.
* Competitive salary and comprehensive benefits package.
Requirements
* Proven experience with Asterisk or similar PBX/softswitch platforms.
* Strong understanding of SIP protocols, VoIP and call routing.
* Experience with Linux environments (Debian/Ubuntu/CentOS).
* Networking knowledge (UDP/TCP, NAT, firewalls).
* Proficiency with SQL databases for call detail records (CDR) and reporting.
* Experience supporting or developing telecom‑related API integrations.
* Ability to diagnose and resolve performance or interoperability issues.
Desirable
* Experience with SBC configuration/management.
* Familiarity with Kamailio, FreeSWITCH or OpenSIPS.
* Knowledge of WebRTC, TLS/SRTP or other encryption protocols.
* Basic scripting in Python, Bash or PHP for automation.
* Exposure to fraud detection or call analytics tools.
Benefits
* Flexible working: Hybrid model.
* Private medical (Self/Family).
* Inclusive culture and environment.
* Flexible benefits programme.
* Generous holiday allowance.
* Access to continuous learning and development opportunities.
* Bonus potential based on performance and business‑related factors.
* Pension scheme contributions with Government top‑up.
* EV car scheme.
Equal Opportunities
Here at TIG we are committed to equal opportunities and value diversity, equity and inclusion at our company. We do not discriminate based on race, religion, colour, national origin, sex, gender identity, sexual orientation, age, marital status, veteran status or disability status. We seek to ensure that individuals with disabilities receive reasonable accommodation throughout the hiring process and ultimately within the job itself. Please contact us to request any accommodations.
Our Process
Our talent acquisition team will contact you if successful. The process typically starts with a short screening call (max 30 minutes) to learn more about you. If all goes well, your profile will be shared with the hiring manager for review. The interview process is tailored to each role.
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