Python Developer jobs in United Kingdom

Employment Type Full time

Location Hybrid · London, UK 3+ days office based

Seniority Mid-level

Closing:11:59pm, 19th Oct 2025 BST

We are looking for an experienced Software Developer to join our Growth and Analytics team, playing a critical role in the implementation of new projects in the ever-changing Publishing industry and the competitive UK market. The successful candidate will have the opportunity to use and develop their coding skills while learning about technology, marketing and strategy in a young, innovative and dynamic environment amongst big players such as Amazon, Google or Apple.

This is an exciting opportunity to join a top multinational company, a leader in the Publishing industry with worldwide presence. The position will give the opportunity to grow as a professional by joining a dynamic and fast-growing team within one of the largest companies in a consolidated group.

• Work alongside analysts to maintain projects and develop new ones
• Monitor systems and promptly resolve any issues
• Review and improve stability of existing and future projects
• Identify new opportunities and areas of growth based on new technology and business needs
• Produce production level code with appropriate testing, redundancies and error handling
• Utilise the latest technologies in the AI/ML space to build cutting edge tools

• Demonstrable experience of professional Python skills
• At least one web framework – Flask, FastAPI, Django, etc
• Data manipulation with Pandas / numpy
• Database design and best practices
• Proven experience taking a greenfield project through a full development lifecycle

• Organised and thoughtful approach to your projects
• Able to manage your own time effectively to meet deadlines
• Strong coding skills and the ability to work effectively in a dynamic, fast-paced environment
• Confidence to take ownership of your projects
• Must be comfortable on MacOS and Linux (Ubuntu VMs)
• Excellent teamwork skills and the ability to collaborate effectively with internal teams
• Strong critical thinking skills and ability to work through issues independently.
• Hybrid working model (3 days in the office)

• 28 days holiday plus bank holidays (option to buy and sell holiday days)
• Enhanced pay for maternity, paternity, adoption and shared parental leave
• Private healthcare cover and life assurance
• Summer Hours
• Free access to HeadSpace, employee assistance programme (24 hour helpline), mental health first aiders, and a wellbeing portal
• Season ticket loans (from day 1 for entry level) and cycle to work scheme
• Relocation Rent Support Loan
• Employee networks: HC All In (open forum), Elevate (for ethnic minority colleagues), HarperParents, Menopause at Work, Pride at HC, Social Mobility Network and Neurodiversity at Work
• Unlimited training on our Learning and Development portal, management courses (up to MA level) and mentoring programmes
• Virtual GP and eyecare vouchers
• Onsite physiotherapy (London only)
• Charitable donation matching and 2 volunteering days
• Green Electric/Hybrid Car Benefit Scheme (salary sacrifice)
• With Trees for Life we plant a tree in the Highlands of Scotland for every permanent hire
• Free e-books and audiobooks, digital newspaper subscriptions and discounts on books
• Subsidised canteen and retail discounts
• Onsite prayer room

At HarperCollins, we value authenticity and integrity in our recruitment process. To ensure a fair and accurate evaluation of all applications, we ask that all responses to assessment questions reflect your own thoughts, experiences, and capabilities. This allows us to fairly assess your knowledge, skills, and experience to determine how they align with the role. We value diverse perspectives and genuine contributions, even if answers are not perfect. The use of AI tools or external assistance to generate responses is discouraged unless explicitly permitted for specific tasks.

If you wish to discuss anything regarding this position and/or your application to this role, please reach out directly to tarni.crossley-lees@harpercollins.co.uk with subject heading ‘Vacancy Query’ plus the job title and we will aim to get back to you within 5 working days.

Please note, if you are interested in the role you would need to submit your application via Applied. We do not accept email applications.