Our mission is to break down the barriers of today to release the potential of tomorrow. Join us today and release yours.

There are two things that we want to share with anyone considering joining us.

Firstly, we’ve got big ambitions for our colleagues and the future of the organisation. These include our vision that inclusion and accessibility drive every conversation we have and every decision we make. We want our workforce to fully represent the communities and customers we serve, because a diverse business is a better business. We value every colleague, their diversity and the contribution that they make. When we say you’re welcome at BT, we really mean it.

Secondly, the one thing the pandemic has taught us is that a lot of current and future colleagues, where and when possible, want to embrace hybrid working. Therefore, we are introducing smart working at BT. Smart working means having the flexibility to choose, as a team, how and where you work depending on your team’s deliverables and needs; when you are at your shared core location to connect with others and when not. It may not be for every role, and, as part of the recruitment process, you’ll have the chance to discuss smart working and how it might work for the job you are applying for.

About this role

The SBC and SIP Specialist Network Designer is an essential role responsible for the design of our core voice platform SBC components, enabling rapid deployment underpinning new customers and revenues. SIP expertise will be used to specify interfaces for new products and diagnose complex signaling faults in live service that require deep design knowledge.   These functions help protect revenues in excess of £500 M.

You'll have the following responsibilities

Design leadership for SBC’s across our strategic core voice platforms, including SDIN, SIP-Trunking, IP Comms, Cloud Contact Genesys. 

Design leadership for SIP signalling across our strategic core voice platforms, applying deep subject matter knowledge to write specifications and resolve issues to the satisfaction of customers and industry.

Co-ordination with all Customer, Test, OSS, Security and Operational team stakeholders

Lead the technical interface to the suppliers, ensuring that all developments are delivered to the expected scope, cost and quality. 

Lead feasibility studies, functional and non-functional designs. Responsible for production of high and low-level design documentation as appropriate including initial settings - prior to test entry quality gate as defined in the delivery plan

Take technical lead in resolution of any significant in-life service affecting issues 

Lead the ongoing definition of the SBC platform roadmap, ensuring engagement with all stakeholders in Technology and Product Line.

Managing peer reviews and providing sign off authority on designs associated with network components within network platforms and/or customer solutions

Mentor and share knowledge with others, offer expert advice and recommendations in your areas of subject expertise and be an advanced user of design tools.  

Provide technical expertise to inform contract and commercial management.  Provide input to business cases and proposals for ways to avoid costs.

You will also be responsible for:

People

Lead a small matrix team as appropriate across Design and Test to ensure they are trained and directed to design and test SBC related deliveries appropriately

Cost

Driving efficiency and cost reduction through defining Brilliant and Simple requirements to the supplier and other BT systems

Quality

Ensuring rigorous and highly available solutions to underpin the highly available requirements of SDIN and our VoIP services. 

Delivery

Design and drive improved working processes, Operating outside of set designs and guidelines where necessary to find innovative solutions to optimise the delivery of technical solutions.

Application of Design best practise to domain, and interlock with design and delivery plans across all related systems and teams. 

You'll have the following skills & experience

The SBC and SIP Specialist Network Designer will possess a thorough knowledge of the voice networks, SIP signalling standards and technologies that mke up BT’s voice platforms, mobile networks and large carrier networks. They will also have a good understanding of associated standards and industry initiatives that relate to the existing service and its evolution. Other specifics for the role include good knowledge of:

Oracle SBCs

Metaswitch SBCs

Ribbon SBCs

SIP protocol and associated RFCs and national standards

Application of SIP in real world use cases, issues that can arise, and how to resolve these

Stakeholder and Vendor  Management – Ability to engage with Stakeholders and Vendors at an appropriate level to ensure necessary business results can be attained.

Problem solving – Proven ability to solve complex problems in a controlled and systematic manner, analysing the available data to make the correct business decesions taking responsible risks when appropriate.

Coaching and Mentoring – Experience of coaching and mentoring others for peak performance

Financial Management – Understands overall cost to business for decisions made, has a good working knowledge of different types of budgets and inputs to business cases

Process improvement / Management – Works across teams to identify changes to processes and procedures to enable faster delivery or better business outcomes.

Strong interpersonal skills with the ability to bring teams together across BT to look at business issues ranging from feasibility through to issues affecting live service.

Experience you would be expected to have:

3 years + experience of complex core voice network design, covering SBCs, Routing and the services running over the core network - MANDATORY

Thorough knowledge of SIP signalling protocol – MANDATORY

Test domain expert with broad experience of test design for SIP services - MANDATORY

Proven record of delivering  projects to time, cost, quality requirements – MANDATORY

Good knowledge of:

Oracle SBCs -MANDATORY

Metaswitch SBCs - MANDATORY

Ribbon SBCs - MANDATORY

Application of SIP in real-world use cases, issues that can arise, and how to resolve these – Mandatory 

Excellent communication skills both verbal and written - MANDATORY

Benefits

Competitive salary

25 days annual leave (plus bank holidays)

10% on target bonus

Option to join the Healthcare Cash Plan

Pension scheme

Shares Plan

Flexible benefits: cycle to work, childcare vouchers, healthcare, etc.

Discounted BT products

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

How to Apply

It's easy to apply online; you just need a copy of your up-to-date CV and to follow the step-by step process. Don't worry if you need to make changes - you'll have the opportunity to review and edit your work on the final page. We look forward to receiving your application!