Location: Cardiff - Hybrid
(We have a flexible approach to hybrid working, and ask that you attend the Cardiff office a minimum of 2 days per week so that we’re able to interact and collaborate in person).
Closing date: 8th July 2026
About Us – simply brilliant thinkers making software brilliantly simple
At Box UK, we have over 25 years’ experience of designing, developing and successfully delivering large-scale, user-centred digital platforms for ambitious, disruptive and innovative organisations across the globe. Our ambition is to become the number one destination for clients and employees, delivering scalable and dynamic enterprise digital platforms.
Adopting an Agile approach that enables us to adapt quickly and respond effectively, we take pride in delighting our clients through the consistent delivery of large-scale enterprise websites and applications and our scalable and resilient award-winning systems.
To keep growing and keep winning, we’re looking to add more great people to our team to help us drive our business forward. We are currently looking for a Senior WordPress Developer to join a group of exceptionally talented and passionate individuals and contribute towards our continued success.
We have retained an entrepreneurial spirit and start-up mentality, and have created a fun and inclusive culture, centred around continuous improvement and learning. We’re a highly collaborative team, continually striving to innovate and excel in everything we do to consistently deliver an exceptional customer experience.
Our values define us and underpin everything that we do. They are the reason our people give us incredible feedback about the culture we have created, and we are extremely proud of this. It’s our people and culture that truly sets us apart from our competitors, and we look for people who passionately share these values with us:
- Bring your A game
- Deliver amazing experiences
- Everyone is an innovator
- Have fun and value the team
- Own it!
Being a Senior Drupal Developer at Box UK
As a senior member of our development team, you will play a key role in leading and delivering enterprise-level Drupal solutions, supporting large user-base installations with complex business rules - projects ranging from international e-commerce sites and editorial archives, to large-scale brochure sites and community hubs.
As a Senior Drupal Developer, you will support the team in their continued learning and development through sharing experiences, presenting on topics, and mentoring specific skills. Alongside this, you will be responsible for leading architectural decisions and choosing approaches to ensure the team delivers high quality software.
You will have the opportunity to grow your skill set within the Drupal ecosystem, as well as the potential to broaden your outlook to other server-side frameworks and front-end technologies.
AI is increasingly part of how we deliver. Our developers use AI coding assistants (such as Claude Code) as a standard part of their workflow, and we're keen to keep pushing what's possible with AI in day-to-day delivery. We're looking for someone who's comfortable working this way already, or genuinely curious to get there.
In This Role You Will…
- Utilise your expertise in Drupal to develop new functionality, configure installations, and select appropriate modules, creating exceptional software solutions that exceed client expectations
- Make effective use of AI coding assistants to accelerate delivery, improve code quality, and free up time for the harder architectural and problem-solving work
- Lead and contribute to building new functionality and adapting existing software
- Troubleshoot, investigate, and fix bugs
- Collaborate within a skilled team to solve complex client problems
- Write high quality, well-tested code in line with our development guidelines
- Participate in and lead code reviews, and lead pair programming activities with your team
- Lead and actively participate in project, sprint and client meetings
- Provide specialist guidance and support, acting as a mentor and coach within the development and project teams
- Drive continuous improvement initiatives to contribute towards the overall success of business performance
- Support the business development team in the creation of project tenders
- Be an ambassador for Box UK, embodying our brand and promoting our culture, values and behaviours
On the technical side you will have...
Essential
- A minimum of 5 years’ experience as a Drupal Developer, with evidence of senior-level contribution
- Proven experience developing Drupal solutions at an enterprise scale
- Good working knowledge of HTML, CSS, and JavaScript
- Experience creating CSS using Sass and, ideally, BEM methodology
- Familiarity with coding standards (e.g. PSR-12)
- Experience writing tests using PHPUnit
- Knowledge of code versioning tools including Git and GitHub
- A strong understanding of working with modern PHP
- An understanding of web performance and why it matters
- Experience working with APIs, databases, and other external data services
- A love of clean coding practices (SOLID, etc.)
Desirable
- Software development experience with one or more of the following frameworks: Symfony, Laravel
- Experience using AI coding assistants (e.g. Claude Code, GitHub Copilot, Cursor) in a professional development workflow
- Experience working with frontend JavaScript frameworks (e.g. React, Vue, Angular)
- Knowledge of JavaScript and TypeScript
- Experience of supporting technology such as Solr, Elasticsearch or Varnish
- Experience of trunk-based development and CI/CD practices
- Experience of developing e-commerce solutions
And your attributes should match with the following…
Interpersonal / communication skills: Excellent communication and active listening skills with the ability to express yourself clearly and articulately, both orally and in writing. Able to build strong and effective, collaborative professional relationships and credibility at all levels, and motivate and inspire others to achieve results.
Team player: Promotes collaboration within the team to collectively achieve goals and required outputs. Supports colleagues' ideas and suggestions, challenging and expressing disagreement constructively and respectfully. Inspires and encourages others to deliver high quality outputs.
Self-starter: Motivated and comfortable working autonomously.
Problem solver: Relishes tackling complex issues and offering creative solutions.
Results oriented: Able to demonstrate a clear focus on desired results. Effective in directing efforts and resources towards delivering individual and team goals and objectives.
Innovative: Open to different and new ways of doing things, developing and supporting the introduction of new and improved methods, processes, technologies and ways of working.
Organised: Able to prioritise workload and tasks effectively for both you and other members of your team.
Flexible: Willing and able to respond and adapt to changing circumstances and expectations readily.
Tenacious & resilient: Driven to complete projects to high quality standards whilst meeting required deadlines. Responds to setbacks with renewed and increased efforts; is persistent and remains positive when encountering challenges.
Attention to detail: Thorough in accomplishing a task through concern for all the areas involved, no matter how small.
And in return...
You will enjoy a competitive salary and a comprehensive benefits package.
We recognise that our success comes from the talent, passion and dedication of our team. Working collaboratively, we share the challenges and rewards that come from growing our company, reinforcing our culture of ownership. We understand the importance of personal growth and professional development and invest in the skills of our people to nurture their talent. Our working environment is fast paced, exciting and fun to work in.
We are an inclusive employer that welcomes diversity, challenges discrimination and promotes equality. We welcome and encourage applications from people of all backgrounds and do not discriminate on the basis of any protected characteristic.
Job Types: Full-time, Permanent
Pay: Up to £55,000.00 per year
Benefits:
- Company pension
- Cycle to work scheme
- Employee discount
- Life insurance
- Paid volunteer time
- Private medical insurance
- Referral programme
Application question(s):
- Are you able to attend our Cardiff office at least 2 days a week?
Work authorisation:
- United Kingdom (required)
Work Location: Hybrid remote in Cardiff CF10
