Telecoms Engineer

The Investigo Group; Sandbach; Hybrid; GBP 40,000 - 60,000; Full time

Job summary

A leading tech firm in the UK is seeking a skilled Telecoms Engineer to join their hybrid team in Sandbach. The role involves configuring Asterisk-based systems, managing SIP and VoIP infrastructure, and collaborating with cross-functional teams. The ideal candidate has proven experience in secure communications, particularly within Linux environments, and will be eligible for Security Check (SC) clearance. A competitive salary and comprehensive benefits package are offered.

Benefits

Competitive salary

Comprehensive benefits package

Flexible working

Private medical insurance

Generous holiday allowance

Continuous learning opportunities

Bonus potential

Pension scheme

EV Car Scheme

Qualifications

• 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.

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.

Skills

Asterisk

SIP protocols

VoIP

Linux environments

Networking knowledge

SQL databases

API integrations

Job description

Overview

Role: Telecoms Engineer

Location: Hybrid - Sandbach, Cheshire - the 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 Requirements

Please note that holding a current Security Clearance is not essential at the time of application, but eligibility is required. This role requires the successful candidate to be eligible for Security Check (SC) clearance. To meet this requirement, applicants must:

• Right to work in the UK
• Lived in the UK continuously for the past 5 years
• Not have spent more than 6 months outside the UK in total during that period
• Be willing to undergo security vetting as part of the onboarding process

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 is made up of:

• Voixtel, secure communications and voice platforms for regulated and critical environments.
• IIS, Providing secure internet access in both the public and private sectors. Its mission is to deliver world-class secure internet capabilities enhancing productivity across diverse skillsets and organisations.
• Vestigo Consulting is our training and consultancy company, tailored around specialist sector-specific knowledge, and provides regular courses and CPD for our community. The Consultancy side concentrates on expert support of our customers as well as specifically assigned individual deployments.
• Collaboraite is a bleeding-edge company that provides our Data and AI capability. A collaborative partner for designing user-centred secure data solutions to overcome operational hurdles, delivered through design thinking and agile coaching.

Diversity, Equity, and Inclusion (DEI) are at the heart of The Investigo Group (TIG). We're dedicated to creating a workplace where people from all backgrounds are not only welcome but empowered to excel. We actively seek diverse talent, promote fairness, and foster an inclusive environment where every voice matters, driving innovation and progress in our dynamic tech community.

The group provides bespoke, secure, user-centric products fuelled by deep technical knowledge advanced data and analytical skills.

We proudly stand as a global leader in this space, partnering with esteemed entities that require these advanced forward-thinking capabilities. These partnerships have been forged from our understanding of customer challenges, as well as our expertise in developing world-leading enterprise product sets.

Join us at TIG, where innovation knows no bounds, and together, we'll shape the future of technology solutions for a safer, more efficient world.

About You:

You’re a telecoms engineer with a passion for building resilient, secure communication systems. You’ll thrive here 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 be responsible for maintaining and developing Asterisk-based platforms, optimising SIP and VoIP systems, and supporting integrations that enable secure, reliable communications across our customer base. Working closely with development and platform teams, you’ll ensure our 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 within 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 in This Role Looks Like

• 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 our Sandbach office.
• Competitive salary and comprehensive benefits package.

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.

• Flexible Working: We offer a hybrid model.
• Private Medical (Self/ Family)
• Inclusive Culture: Enjoy an inclusive culture and environment.
• Flexible Benefits: A flexible benefits programme to suit your needs (discounts, insurance etc).
• Holiday: Generous holiday allowance.
• Learning: Access to continuous learning and development opportunities.
• Bonus Potential: Bonus potential based on performance and business-related factors.
• Pension: Pension scheme contributions with Government Top-Up
• EV Car Scheme
• More Benefits: Explore additional benefits on our career site.

Please note that the talent acquisition team is managing this vacancy directly and we do not require agency support.

Candidates who are successful will be required to undergo relevant security checks.

Our Process

Our talent acquisition team will be in touch if you're successful, the team will arrange a short screening call (max 30 minutes) to learn more about you, and what you are looking for and answer any questions you may have. If all goes well, the team will share your profile with the hiring manager for review. Our interview process is tailored to each role.

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, gender expression, sexual orientation, age, marital status, veteran status, or disability status.

As a Group, 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.