Customer Solution Design Specialist - Unified Communications

About BT

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.

About the role

Specific business area
This role sits within the Unified Communications (UC) design team, part of the Digital Workplace domain. The team delivers solutions across platforms such as Microsoft Teams, Zoom, Cisco Webex Calling, and AudioCodes.

Impact of the role
You will play a key role in designing and delivering reliable communication solutions for customers. Your work will directly improve customer experience by ensuring smooth migrations and high-quality outcomes, while also supporting business growth through scalable and reusable designs.

Link to strategy
This role supports the organisation’s strategy to modernise communication services, drive standardisation, and improve delivery quality. It contributes to customer satisfaction, operational efficiency, and growth through upsell opportunities and strong technical consultancy.

What you’ll be doing

You will

• design Unified Communications solutions across multiple platforms and customers
• create design documents such as High-Level Designs (HLDs), Low-Level Designs (LLDs), and call flow diagrams
• gather customer requirements and translate them into clear technical designs
• lead technical activities during migration and transformation projects
• ensure solutions are delivered right first time and meet customer expectations
• work closely with project managers to plan and deliver migrations
• collaborate with internal teams, customers, and third-party suppliers to deliver solutions
• act as a point of contact for technical guidance during delivery
• support the development of design standards and best practices
• You will improve efficiency by reusing and standardising designs, using continuous improvement techniques
• provide technical advice to account teams and suggest improvements or new solutions
• support opportunities to expand services and add value for customers

You may

• lead virtual teams of technical experts on complex projects

Essential Skills / Experience

• Experience working with Unified Communications technologies (e.g. Microsoft Teams, Zoom, Webex Calling, Cisco, Avaya)
• Good understanding of voice technologies and SIP protocol
• Experience creating technical designs and documentation
• Experience working on migration or transformation projects
• Ability to solve problems and make clear technical decisions
• Strong communication skills and ability to work with different teams
• Ability to take ownership and deliver work independently
• Strong Experience with Session Border Controllers, AudioCodes preferred

Desirable Skills / Experience

• Hands-on experience with Microsoft Teams Voice, Zoom Phone, or Cisco Webex Calling
• Experience working in multi-vendor environments
• Additional European language skills (e.g. French, German)
• Experience leading technical work or supporting other engineers

Our Package

Compensation and benefits:

• Attractive salary

• Company car / car allowance

• Cafeteria package - HUF 600,000/ year

• Performance-based bonus

• Comprehensive private health care package for all the employees, which can be extended to family members

• Nursery support for mothers returning from maternity

• Extended paternity leave: 10+10 day fully paid days

• Commuting allowance

• Home office allowance

• Employee discount opportunities

• Highly affordable mobile packages for the family as well

Work atmosphere and community:

• New high-class offices both in Budapest and Debrecen

• Wide-range of company and community programmes (including support for different sport activities)

Flexibility:

• Family-friendly culture

• Smart working approach (hybrid working model, 3 together, 2 wherever)