Operations specialist- Open Stack

Job Req ID:  468
Posting Date:  20-Sep-2022
Function:  Business Services & Operations

1 Braham Street, London, United Kingdom

Salary:  Competitive

This is a hybrid role and can be based in Bristol, London and other BT locations.


About BT


BT has a key role in British society, fostering change and leading technology innovation. From delivering the Olympics, to supporting the emergency services, to investing more into research than any other UK technology company, we take pride in everything we do - and in the people who work here.

We're now a global company operating at the forefront of the information age, employing 90,000 people in 180 countries. And we're on a mission. Guided by our core values of Personal, Simple and Brilliant our goal is to help customers, communities and businesses overcome barriers and release their potential.


About This Role


A technical role providing 2nd/3rd line support of the BT Mobile Cloud Core estate in the Mobile Cloud Core Operations team. Mobile Cloud Core Operations are accountable for the smooth and cost effective running of the mobile cloud core network and its associated services. Team members support incident, change & problem management as well as project related work. Members also participate in a 24x7x365 emergency callout rota.


You will be responsible for specifying, building, securing and supporting environments that enable subscriber services to function within a mobile phone cloud core network. You will have both the technical skills and proven experience to support the following areas:

  • Canonical Open Stack expertise and associated services
  • System Administration in a Linux environment
  • Good knowledge of Security Vulnerabilities across the IT industry and experience of Security Hardening strategy and practice. 
  • Driving best practice in Data Security concepts and protection systems. 
  • Provide 2nd/3rd line support of the BT Mobile Cloud Packet Core estate from a Sys Admin perspective


You'll have the following responsibilities



  • Ensure that all platforms/ systems/services in your control achieve the agreed availability target, ensure that adequate expert support is available 24 x 7 x 365 
  • Build/deploy K8S & K8S-based (eg CCD) cluster architecture, including tenant-specific Openstack & SDN components
  • Provide 2nd line support to tenant teams, on all K8S & K8S-based (eg CCD) cluster architecture deployments
  • Support containerised layer of tenant CNF including K8S & its features such as Load Balancing (ECFE for CCD), Docker components, Network plugins & CNI’s etc
  • Triage faults on tenant NFVi layer, involving tenant-specific SDN & Openstack configuration, which may involve further investigation into Network Cloud supported infrastructure
  • Act as support resource to tenant teams for application onboarding & instantiation tasks (eg troubleshoot the deployment of heat templates, performing health checks at K8S layer) 
  • Provide 2nd line support to tenant teams, of Virtual Machines/Instances within tenant environments.
  • Supplier Management- Ensure that all cases escalated to support vendors are resolved within the appropriate time scales. Provide assistance to suppliers when required. 
  • Ensure documentation and support procedures are kept up to date.
  • Mentor junior team members. 
  • Work with the other teams to develop, configure and maintain the infrastructure management solutions and tools required to manage all data services. Participate in all appropriate project forums. 
  • Provide support to various stakeholders such as Technology Operations Centre, Design, Build, Network Cloud and Dynamic Infrastructure, Capacity Planning, revenue Assurance and Customer Experience.



  • Troubleshoot Network flows & connectivity between K8S cluster nodes
  • Troubleshoot Network flows & connectivity between K8S pods, & between K8S pods and the adjacent SDN hand-off points
  • Support & maintain virtualised F5 instances in tenant environments (to be used for CDR proxy, HTTP proxy, DNS Forwarding)


You'll have the following skills & experience



  • Expert understanding of Openstack environments
  • Excellent working knowledge of Nova, Swift,Cinder,Neutron, Horizon,Keystone, Glance and Cellometer 
  • Excellent understanding of containerisation technologies including Docker and Kubernetes
  • Experience of Open Stack in a telco cloud environment using SDN
  • Good understanding of Linux
  • Exposure to Virtualisation technologies (e.g. KVM or ESXi)
  • Openstack vendor led training accreditation.


  • Use of OSS tools to support performance related issues (e.g. Prometheus & Grafana)
  • Experience in scripting and markup languages (e.g.Bash, Python, Perl, YAML) 
  • Experience with Integrate Servers with Centralised syslog management tools
  • Experience with the ELK stack (Elasticsearch, Logstash & Kibana)
  • Use of git based repositories
  • Receiving Security scan report results and Implementing highlighted patches using change management. 
  • Ensuring patches/changes have been tested (nonproduction and by vendor). 
  • Keeping audit of teams hardware and licencing details
  • Experience of dealing with 3rd party vendor support 



  • Competitive salary
  • 25+ days annual leave (plus bank holidays) (subjected to the number of years you've been with BT)
  • 10% on target bonus
  • Life Assurance
  • Pension scheme
  • Option to join the Healthcare Cash Plan or other benefits such as dental insurance, gym memberships etc.
  • 50% off BT and EE mobile pay monthly or SIM only plans
  • Exclusive colleague discounts on our latest and greatest BT broadband packages
  • BT TV, including BT Sport and the NOW Entertainment membership, and 25% off NOW Sport, Cinema and Kids
  • 30% discount for friends and family on EE mobile pay monthly and SIM only plans



So, if you're interested in the power of potential, why not join us today and release yours? You can read more here about what it's like to work at BT.