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BT Group • GBR Bristol - Assembly

Application Support Engineer

Employment type:  Full time
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Job Description

Job Req ID: 60988

Posting Date:

Location: Assembly, Bristol

Location

This role is based out of our Assembly, Bristol office. We have a hybrid working model of 3 days together and 2 days wherever.

Due to the nature of the work, you will need to be elegible for security clearance+.

About the role

Public Key Infrastructure (PKI) is critical for securing trust in a digital world. As an Application Support Engineer within the Security Software Services team, you will be part of a second line support team who are responsible for maintaining and improving in-life services of designated PKI platforms, supporting a mixture of internal and external customers.


This is a great opportunity to join a niche, but growing team, focused on delivering security critical platforms.

What you’ll be doing

  1. Provide 2nd Line technical support to external and internal customers by leading technical troubleshooting and performing root cause analysis.
  2. Identify opportunities to reduce incident volumes through automation and process improvement.
  3. Identify, manage and mitigate vulnerabilities and risks affecting our platforms.
  4. Be part of an on call rota to ensure potential service impacting incidents are managed 24/7.
  5. Plan and implement routine security patching, application releases and upgrades.
  6. Ensure changes are tested, documented, and implemented with minimal customer impact. Some out of standard office hours work will be required to implement changes.
  7. Maintain operational documentation, runbooks, and knowledge articles.
  8. Support the maintenance and continual improvement of BCDR plans through regular disaster recovery exercises and resilience testing.
  9. Support compliance activities, audits, and Key Ceremonies.
  10. Ensuring all in-life activities are managed within our service level agreements (SLA’s).

Essential Skills / Experience

  • Strong diagnostic and problem solving – Demonstrates the ability to analyse complex technical issues, identify root causes, and drive incidents through to successful resolution.
  • Customer focus – Ability to understand customer requirements, communicate effectively with stakeholders, and deliver solutions that meet business and operational needs.
  • Command Line Interfaces – Experience supporting operating systems via CLI, with a preference for supporting Linux environments.
  • Databases – Strong understanding relational databases, including the ability to query, troubleshoot, and support database-driven applications.

Desirable Skills / Experience

  • Public Key Infrastructure (PKI) - Basic understanding of PKI and cryptographic technologies, including certificates and key management
  • Kubernetes - Strong understanding of Kubernetes concepts and containerised application environments, including deployment and operational support.

Our Package

Tailored benefits make a real difference. That’s why we offer a comprehensive range to support your growth, wellbeing, and everyday life.
You can design the package to suit you and your lifestyle.

Your core benefits include:
• 10% on target annual bonus
• Access to an online private GP 24/7 for you and your immediate family
• Market-leading paid carers leave with up to 2 weeks off
• Equalized maternity, paternity, and adoption leave – 18 weeks’ full pay and 8 weeks’ half pay
• Discounted EE and BT products, including mobile and broadband
• Market leading Pension scheme – 5% from you and 10% from us
• Holiday purchase scheme


You can select additional benefits, including healthcare, dental, gym memberships and more when you’re ready.


Ready to connect for good and help shape the future? Apply now.

BT Group is the UK’s leading communications group and the holding company behind some of the country’s most recognised brands – including BT, EE, Openreach and Plusnet. Our purpose is as simple as it is ambitious: we connect for good. Our customers include consumers, small, medium and large businesses, public sector organisations and other communications providers.

BT Group’s role is about setting direction, unlocking value and creating the conditions for our brands and businesses to thrive.

Having come through the most capital-intensive phase of our fibre investment, our focus now is on what comes next – simplifying how we operate, using technology and AI to work smarter, and organising ourselves to serve customers better and grow sustainably. Group teams shape strategy, policy, brand, capital allocation and transformation, helping the whole organisation perform at its best.

We have a singular culture that unites all our people: we are customer-first challengers, who are committed, clear and connected. These behaviours unite us as one team to deliver for our colleagues, our customers, our stakeholders and the country. Joining BT Group means working at the heart of a business that matters to the UK, with the opportunity to shape decisions, influence outcomes and help set the future course of one of the country’s most important companies.

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3 office days / week

A little flex time

Company benefits

25 (UK, increasing with service) / 21 (India) days annual leave + bank holidays
Adoption leave – 18 weeks full pay, 8 weeks half pay, 6 months statutory
Bank holiday swaps
Buy or sell annual leave – buy up to 5 days/year pro rata
Carer’s leave – Two weeks paid leave
Cinema discounts
Coaching
Compassionate leave
Complimentary Medical Services
Cycle to work scheme
Employee assistance programme
Employee discounts
Enhanced maternity leave – 18 weeks full pay, 8 weeks half pay, 6 months statutory
Enhanced paternity leave – 18 weeks full pay, 8 weeks half pay, 6 months statutory
Enhanced pension match/contribution
Enhanced sick pay – 3 months
Faith rooms
In house training
L&D budget – sponsored accreditation available for certain professions
Learning platform – internal and external learning content via Degreed
Learning license – unlimited access
Lunch and learns
Mental health platform access – Silvercloud
Mentoring
Neonatal leave
Open to job sharing
Open to part time work for some roles
Optional unpaid leave
Private GP service – 24/7 virtual GP access for UK colleagues
Referral bonus
Returnship
Salary sacrifice
Share options
Shared parental leave
Travel loan
Volunteer days – 3 volunteer days per year
Reservist leave
Fertility treatment leave
Pregnancy loss leave
Pregnancy support
Fertility treatment leave
Pregnancy loss leave
Pregnancy support
On-site catering
On-site barista
On-site shower
Modern office
Collaboration spaces
Private booths
On-site wellness room
Open to part-time employees
Open to compressed hours

Awards & Accreditations

2nd - Best Workplace Culture

2nd - Best Workplace Culture

Flexa awards 2026
3rd – Most loved - Large companies

3rd – Most loved - Large companies

Flexa awards 2026
Most Family Friendly Company

Top 10 - Most Family Friendly Company

Flexa awards 2025
Best Career Progression

Top 10 - Best Career Progression

Flexa awards 2025
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