Job Description

Why this job matters
The Software Engineering Practitioner plays a key role in delivering features that directly improve the conversion rate optimisation (CRO) of the BT Business Broadband website, turning more visitors into customers. You'll work closely with our CRO specialists, who run targeted experiments and identify winning tests, and you will be responsible for implementing those winning changes into our core codebase so they go live for all customers.
This role is primarily focused on frontend feature delivery in our modern React-based stack, with opportunities to expand into broader business-as-usual (BAU) development once you've mastered the codebase. You'll gain hands-on exposure to CRO experimentation tools such as Adobe Target, collaborating across teams to deliver well-defined, measurable customer experience improvements that align with BT's commercial goals.
What you'll be doing

• Implement successful CRO experiments from Adobe Target into the BT Business Broadband production codebase.
• Collaborate with CRO specialists to understand winning tests, DOM manipulations, and associated markup/components.
• Deliver features in our established frontend technology stack (React 18+, TypeScript, Redux Toolkit).
• Write clean, maintainable, and testable code following agreed standards and patterns.
• Work with designers, analysts, and other engineers to ensure new features meet accessibility, performance, and brand guidelines.
• Participate in code reviews, knowledge sharing, and agile ceremonies.
• Gain exposure to AEM Headless CMS as part of delivering BAU features alongside CRO work.
• Collaborate with backend developers and other teams to integrate frontend changes with existing APIs and services.

Experience you'll have

• Strong knowledge of React and modern JavaScript/TypeScript.
• Experience working in an agile software development team.
• Experience with CSS and the DOM.
• Understanding of state management patterns (e.g., Redux)
• Strong collaboration skills; comfortable working across multiple teams and disciplines.
• Experience writing unit/integration tests using Jest and React Testing Library.
• Experience with Git-based workflows and modern build tools.

Desirable skills:

• Exposure to multiple programming languages or paradigms over your career, showing adaptability and willingness to learn.
• Experience building and maintaining component-based UIs using a design system.
• Experience translating experimental CRO changes into production-ready features.
• Experience with AWS or other cloud platforms.
• Awareness of CRO experimentation tools such as Adobe Target.
• Understanding of web performance considerations and responsive design principles.
• Understanding of AEM Headless or similar CMS systems.

The skills you'll need
Agile Development
Database Design/Development
Debugging
APIs/Web Service Integration
Programming/Scripting
Microservices/Service Oriented Architecture
IT Security
Cloud Computing
Artificial Intelligence/Machine Learning
Continuous Integration/Continuous Deployment Automation & Orchestration
Software Testing
Application Development
Algorithm Design
Software Development Lifecycle
Project/Programme Management
Decision Making
Growth Mindset
Inclusive Leadership
Benefits

• An annual on-target bonus of 10% (personal and company multipliers).
• BT Pension scheme: minimum 5% employee contribution, BT contribution 10%.
• Exclusive colleague discounts on our latest and greatest BT broadband packages.
• 50% off EE mobile pay monthly or SIM-only plans, and a 50% discount for friends and family on EE SIM-only plans.
• Discounted EE TV, including TNT Sport and the NOW Entertainment membership.
• There's also great support for working parents, including pay whilst on maternity, adoptive, and paternity leave.
• 25 days' annual leave (not including bank holidays), increasing with service.
• Volunteering days, so you can give back to your local community.
• Brand new electric vehicle salary sacrifice arrangement, known as 'My EV'.

Our leadership standards
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 , please apply anyway - you may just be the right candidate for this or other roles in our wider team.

Skills Required