BT Group – Specialist Engineer
Location: Bristol, England, United Kingdom
Why this job matters
Our Mobile Network is at the heart of everything we do; from sending a text to watching the latest YouTube sensation. It is constantly evolving, and we are at the forefront of technology for the next generation of cutting‑edge mobile networks and services.
The Mobile Operations teams support and manage system and service performance for Mobile Voice and Data services for all mobile brands and MVNOs, 24 hours a day, 7 days a week, 365 days a year. This full‑time role is 9 - 5:30 (plus on‑call/out‑of‑hours overtime) and is based in BT's Bristol office (3 days a week in office).
The role holder must be a UK National as a Home Office Security clearance may be required.
Key Responsibilities
* Act as a recognised technical expert for a minimum of two systems/services within the team remit.
* Ensure all platforms and services in your control achieve agreed availability targets and that adequate expert support is available 24/7/365.
* Recommend changes to procedures and processes to improve service availability, data integrity and performance.
* Represent and lead Operations responsibility in projects, ensuring design and support model fit for purpose.
* Support and implement the technical strategy, deploying new systems, configuration changes, upgrades and maintenance while maintaining high availability and quality.
* Build, secure and support environments that enable subscriber services to function within the mobile core network, providing support for all messaging systems (SMS, MMS, AOTA, LBS999 and any new services).
* Lead the technical team during high‑impact incident situations, driving restoration of service.
* Produce infrastructure management documentation such as support documents, fault‑finding documents and expert advice.
* Mentor and train team members.
* Ensure ESN requirements are adhered to to meet Home Office audits and SLAs.
* Lead the technical aspects of post‑incident reviews and drive improvement opportunities.
* Participate in vendor operational review meetings, leading on workstreams where appropriate.
* Support messaging changes, ensuring pre‑ and post‑testing and implementation details are documented.
* Ensure supplier cases are resolved within appropriate time scales and provide assistance to suppliers when required.
* Take part in 24/7 on‑call rota and overnight planned work.
Key Skills and Qualifications
* Subject matter expertise for messaging and voicemail systems.
* Extensive operational experience in planning, deploying and supporting SMS, MMS, OTA‑SIM, LBS999 & Cell Broadcast technologies across multiple vendors.
* In‑depth understanding of messaging architecture and technologies.
* Knowledge of mobile data architecture, protocols and services.
* Understanding of security vulnerabilities, hardening strategy and protection systems.
* Familiarity with protocols such as SCTP, SIP, TCP/IP, GSM 03.40, HTTP, MM1‑MM7, Diameter, REST/XML, UDP/TCP.
* Experience with operating systems (Linux, Oracle, Solaris, Windows) and system administration.
* Knowledge of Erlang‑based systems and services.
* Discretion regarding sensitive information and strong communication skills.
* Inclusion of a recognised telecommunications or engineering qualification.
* Experience in 24/7 real‑time service support and telecommunications operating procedures.
* Proficiency in scripting (Unix, Python, Go, Power Automate) and automation mindset.
* Experience with network virtualisation technologies and network cloud.
Benefits
* 10% target bonus
* BT Pension scheme – minimum 5% employee contribution, BT contribution 10%
* Equal family leave from January 2025: 18 weeks full pay, 8 weeks half pay and 26 weeks statutory.
* Enhanced women's health support (menopause, screening, period care, etc.)
* 25 days annual leave (not including bank holidays), increasing with service.
* 24/7 virtual GP appointments for UK colleagues.
* 2 weeks carers' leave.
* World‑class training and development opportunities.
* Option to join BT Shares Saving scheme.
About Us
BT Group was the world’s first telco and our heritage in the sector is unrivalled. As home to brands such as BT, EE, Openreach and Plusnet, we play a critical role in creating the future and are transforming our business through fibre broadband, 5G and AI technologies.
We are committed to diversity, inclusion and an authentic workplace; we encourage candidates from all backgrounds to apply, even if they don’t meet every requirement.
Seniority Level
Not Applicable
Employment Type
Full‑time
Job Function
Engineering and Information Technology
Industry
Telecommunications
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