Overview
Role: Telecoms Engineer
Location: Hybrid - Sandbach, Cheshire. Requirement is to be on-site 2 days per week.
Job Type: Full-time, Permanent (37.5 hours)
Salary: Competitive, based on experience + benefits + package
Security Clearance: Eligibility for Security Check (SC) clearance is required. Holding a current Security Clearance is not essential at application time.
About Us
Come and be a part of The Investigo Group (TIG), a dynamic coalition of cutting-edge tech firms specialising in Platform, Software, Data, AI and other bleeding-edge technology solutions. Our innovative prowess spans the globe while proudly hailing from the United Kingdom. The group is multi-functional with a large portfolio of B2B products and services.
Our ecosystem includes Voixtel (secure communications and voice platforms for regulated environments), IIS (secure internet access to support public and private sectors), Vestigo Consulting (training and CPD), and Collaboraite (data and AI capabilities). Diversity, Equity, and Inclusion (DEI) are central to TIG. We provide bespoke, secure, user-centric products powered by deep technical knowledge.
About You
You’re a telecoms engineer with a passion for building resilient, secure communication systems. You’ll thrive if you’re hands-on, proactive and enjoy solving complex infrastructure challenges in a collaborative environment.
About the Role
We’re looking for a highly skilled Telecoms Engineer to join our technical platform function, supporting the development and evolution of our secure voice and communications infrastructure. You’ll maintain and develop Asterisk-based platforms, optimise SIP and VoIP systems, and support integrations enabling secure, reliable communications across our customer base. You will work closely with development and platform teams to ensure systems are resilient, scalable and future-ready.
As this role supports secure communications, candidates must be eligible for UK Security Check (SC) clearance and comfortable working in a security-minded environment.
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 telecoms services.
* Develop and support API integrations between telecoms platforms and backend systems.
* Implement call flow logic, dialplans and routing rules for operational efficiency.
* Investigate and resolve telecoms-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 Indicators
* Delivering a resilient, stable telecoms 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 telecoms technologies.
* Contribute to the evolution of next-generation secure communications.
* Hybrid working with flexibility around the Sandbach office.
* Competitive salary and comprehensive benefits package.
Requirements
What We’re Looking For
* 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 telecoms-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 (discounts, insurance, etc.).
* Generous holiday allowance.
* Learning opportunities and development.
* Bonus potential based on performance and business factors.
* Pension scheme with Government Top-Up.
* EV car scheme.
Please note: The talent acquisition team is managing this vacancy directly and agency support is not required. Successful candidates will undergo relevant security checks.
Our Process
Our talent acquisition team will be in touch if you’re successful. A short screening call (max 30 minutes) will discuss your background and questions. If suitable, your profile will be shared with the hiring manager for review. The interview process is tailored to each role.
Equal Opportunities
We are committed to equal opportunities and value diversity, equity and inclusion. We do not discriminate based on race, religion, colour, national origin, sex, gender, gender expression, sexual orientation, age, marital status, veteran status, or disability status. We provide reasonable accommodations throughout the hiring process and within the job itself; please contact us to request accommodations.
Seniority level: Entry level
Employment type: Full-time
Job function: Engineering and Information Technology
Industries: Technology, Information and Internet
We’re not including external job postings snippets or unrelated content beyond the role and company description.
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