Network Services Authentication Specialist

Job Req ID:  3252
Posting Date:  10-Mar-2023
Function:  Infrastructure

Snowhill, Birmingham, United Kingdom

Salary:  Competitive with Great Benefits

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.
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.


This role can be based in any of the following: Ipswich, Birmingham, Bristol, Manchester, London


About this role

The Authentication Specialist is a key member of the Network Services team who underpin a suite of critical services that keep the company's employees, systems. From authentication of users and their devices through systems access including privileged access through to DHCP, DNS and IP management to name but a few key functions. 

Working closely with others parts of BT to create and maintain robust security policies for these systems

Using your knowledge and experience to define and exceed existing standards

You'll have the following responsibilities

  • Responsible for the design and development of discreet solutions in line with wider architecture and security standards, demonstrating understanding of how solution impacts the wider Technology roadmap.
  • Identifies and solves routine problems with components designed, performs deep dive data analysis, potentially introducing new components or features to resolve issues.
  • Responsible for the design and development components of smaller and /or less complex projects in partnership with team, ensuring and documenting the quality of delivery.
  • Conducts technical peer reviews within the organisation or with suppliers to ensure outputs align to quality standards and customer requirements.
  • Design and deployment of new strategic authentication environments and maintaining roadmap in-line with the future plans of the key business stakeholders
  • Provide real time technical support during live production incidents to the operational support teams from across the business
  • Working out of hours to support business needs and protect service together with being part of the rota team for on-call support. 
  • Provide a technical direction and impacts of technical and commercial decisions on wider software lifecycle

You'll have the following skills & experience

  • Design and Architecture Experience (2yrs+)
  • Experience in authentication services (LDAP, TACACS, OTP etc)
  • Experience of deployment of TACACS/Radius (Cisco ACS/ISE)
  • Familiarity with 820.1x authentication
  • Experience in administration of One Time Password platforms
  • Experience of Windows Server
  • Proficient in reading, writing and developing code/programming.
  • Experience supporting large scale deployments of multi-tenant hosted authentication services
  • Knowledge of Microsoft Active Directory
  • Networking Protocols (IP/DHCP/DNS)
  • Experience of Data Analysis tools using BEATS, Kibana, splunk or other Big Data tools


  • Competitive salary
  • 25 days annual leave (plus bank holidays)
  • 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

Who is the BT Group
We're the leading communications provider with customers in 180 countries. Across the world we enable customer's digital transformations so they can thrive. our focus is simple: be the global provider-of-choice for managed network and IT infrastructure services..