Solution Architect Specialist

The Billing Solution Designer plays a pivotal role in BT's billing ecosystem, directly influencing the design and delivery of solutions that manage multi-billion pound revenue streams. By translating complex business requirements into scalable billing architectures using Netcracker NRM and AWS microservices, this role ensures BT can launch new products rapidly, maintain operational efficiency, and stay competitive in a dynamic market. It is instrumental in realizing the target architecture vision, enabling seamless integration, faster time-to-market, and future-proofing the billing platform.

•    Translates product and customer billing requirements into detailed solution designs, leveraging Netcracker NRM capabilities and AWS-based microservices, following established design methodologies and architectural principles.

•    Owns the technical direction for billing solutions, recommending optimal designs that balance scalability, maintainability, and integration efficiency across the end-to-end stack.

•    Leads design reviews and validation for new features and in-life enhancements, ensuring seamless integration between the billing engine, AWS integration layer, and upstream/downstream systems.

•    Drives continuous improvement in solution design and delivery practices, focusing on automation, reusability, and alignment with enterprise architecture standards.

•    Manages solution design engagements, including scoping, effort estimation, and creation of Statements of Work (SoWs), coordinating with internal teams and third-party vendors as needed.

•    Builds strong relationships with stakeholders, including product owners, architects, and customer teams, influencing billing strategy and operational decisions through deep domain expertise.

•    Ensures architectural consistency across billing solutions, promoting standardization of integration patterns, data models, and service interfaces to reduce cost and improve delivery velocity.

•    Supports customer migration planning, including legacy billing transitions, data mapping, and cutover strategies, ensuring minimal disruption and high data integrity.

•    Coordinates impact assessments and maintains up-to-date design documentation, reflecting changes across the billing and integration landscape.

•    Resolves complex solution issues, leading root cause analysis and driving resolution across billing, integration, and infrastructure layers.

•    Identifies and mitigates risks in solution design, ensuring compliance with security, regulatory, and operational policies relevant to billing and cloud-based services.

•    Provides thought leadership in strategic bids and solution proposals, shaping the technical approach for billing transformation initiatives.

•    Mentors junior designers and engineers, sharing billing domain knowledge, design best practices, and fostering a culture of technical excellence.

•    Champions innovation and continuous learning, staying abreast of emerging trends in billing systems, cloud integration, and customer experience technologies.

Technical Skills

•    Netcracker NRM Product Expertise – Deep understanding of NRM architecture, product modeling, and configuration.

•    Product Model Design – Ability to design and configure product catalogs aligned with business offerings.

•    Bill Formatting Design – Experience in customizing bill layouts and formats based on customer and regulatory requirements.

•    PL/SQL – Strong skills in writing and optimizing database procedures, functions, and queries.

•    Java – Proficiency in backend service development and customization within the billing ecosystem.

•    Interface Design – Designing robust interfaces between billing and external systems.

•    Integration Patterns – Knowledge of synchronous/asynchronous integration, API gateways, and event-driven architectures.

•    JSON, XML, XSD – Expertise in data modeling, schema validation, and payload transformation for service integration.
Solution & Delivery Skills

•    Solution Design – Ability to translate business needs into scalable, maintainable technical solutions.

•    Requirement Analysis – Strong analytical skills to capture, validate, and prioritize functional and non-functional requirements.

•    Solution Architecture – Experience in designing end-to-end architecture across billing, integration, and cloud platforms.

•    Technology Integration – Proven ability to integrate diverse technologies and platforms into a cohesive solution.

•    Troubleshooting – Skilled in diagnosing and resolving complex issues across application and infrastructure layers.

•    Technology Migration – Experience in planning and executing migrations from legacy systems to modern platforms.
Business & Leadership Skills

•    Risk Management – Identifying design risks and implementing mitigation strategies.

•    Commercial Acumen – Understanding of commercial impacts of design decisions, including licensing, cost optimization, and ROI.

•    Negotiation – Ability to negotiate technical scope, timelines, and deliverables with stakeholders and vendors.

•    Presenting / Demonstrating – Strong communication skills to present solutions to technical and non-technical audiences.

•    Growth Mindset – Openness to learning, feedback, and continuous improvement.

•    Inclusive Leadership – Fostering collaboration and inclusivity within cross-functional teams.

•    Decision Making – Making informed, timely decisions balancing technical feasibility and business value.

Domain & Role Experience

•    Minimum 5 years of experience as a Solution Designer in the telecom billing domain, preferably with exposure to large-scale enterprise platforms.

•    Proven track record of designing end-to-end billing solutions, including product modeling, rating, charging, invoicing, and integration with external systems.

•    Experience working closely with product owners, architects, and delivery teams to translate business requirements into technical designs.
Technical Development Experience

•    8–10 years of hands-on development experience in: 
o    Netcracker NRM – including product catalog configuration, service modeling, and billing workflows.
o    PL/SQL – for data manipulation, stored procedures, and performance tuning in billing-related databases.
o    Java – for backend service development, customization, and integration logic.
o    Microservices Architecture – designing and consuming RESTful services, preferably hosted on AWS.
o    AWS Platform – experience with cloud-native services such as Lambda, API Gateway, S3, DynamoDB, etc.
o    Interface & Integration Design – including experience with JSON, XML, XSD, and integration patterns (e.g., event-driven, pub/sub, batch, real-time).
Solution Design & Architecture

•    Experience in creating solution architecture documents, interface specifications, and data flow diagrams for billing and integration platforms.

•    Familiarity with design methodologies, impact assessments, and migration planning for legacy-to-modern billing transitions.

•    Ability to assess and recommend technical trade-offs, ensuring alignment with business goals and platform strategy.

•    Cross-Functional Collaboration

•    Experience working in Agile/Scrum environments, collaborating with cross-functional teams across development, QA, DevOps, and business stakeholders.

•    Exposure to vendor coordination and managing third-party deliverables in multi-vendor ecosystems.
Leadership & Communication

•    Demonstrated ability to mentor junior designers and developers, and lead solution design discussions.

•    Strong communication skills for presenting solutions, conducting design walkthroughs, and influencing stakeholders at various levels.

Looking in:

Leading inclusively and Safely

I inspire and build trust through self-awareness, honesty and integrity.

Owning outcomes

I take the right decisions that benefit the broader organisation.

Looking out:

Delivering for the customer

I execute brilliantly on clear priorities that add value to our customers and the wider business.

Commercially savvy

I demonstrate strong commercial focus, bringing an external perspective to decision-making.

Looking to the future:

Growth mindset

I experiment and identify opportunities for growth for both myself and the organisation.

Building for the future

I build diverse future-ready teams where all individuals can be at their best.

About us

BT Group was the world's first telco and our heritage in the sector is unrivalled.  As home to several of the UK's most recognised and cherished brands – BT, EE, Openreach and Plusnet, we have always played a critical role in creating the future, and we have reached an inflection point in the transformation of our business. 

Over the next two years, we will complete the UK's largest and most successful digital infrastructure project – connecting more than 25 million premises to full fibre broadband.  Together with our heavy investment in 5G, we play a central role in revolutionising how people connect with each other. 

While we are through the most capital-intensive phase of our fibre investment, meaning we can reward our shareholders for their commitment and patience, we are absolutely focused on how we organise ourselves in the best way to serve our customers in the years to come.  This includes radical simplification of systems, structures, and processes on a huge scale. Together with our application of AI and technology, we are on a path to creating the UK's best telco, reimagining the customer experience and relationship with one of this country's biggest infrastructure companies.  

Change on the scale we will all experience in the coming years is unprecedented.  BT Group is committed to being the driving force behind improving connectivity for millions and there has never been a more exciting time to join a company and leadership team with the skills, experience, creativity, and passion to take this company into a new era.

A FEW POINTS TO NOTE:

Although these roles are listed as full-time, if you're a job share partnership, work reduced hours, or any other way of working flexibly, please still get in touch.

We will also offer reasonable adjustments for the selection process if required, so please do not hesitate to inform us.

DON'T MEET EVERY SINGLE REQUIREMENT?

Studies have shown that women and people who are disabled, LGBTQ+, neurodiverse or from ethnic minority backgrounds are less likely to apply for jobs unless they meet every single qualification and criteria. We're committed to building a diverse, inclusive, and authentic workplace where everyone can be their best, so if you're excited about this role but your past experience doesn't align perfectly with every requirement on the Job Description, please apply anyway - you may just be the right candidate for this or other roles in our wider team.