Ready to build smarter, faster, AI-driven solutions that transform digital marketing? Want a better work-life balance with our groundbreaking 4 day week model?We are seeking a Senior Backend Developer to support the development of our AI-driven marketing platform, with a strong focus on performance, scalability, and data pipeline architecture. This role is ideal for someone experienced in backend API development and working with modern data infrastructure.At Ask BOSCO , we''re on a mission to help brands spend smarter with our award-winning predictive analytics platform.As our Senior Backend Developer you won t just write code - you ll shape the future of a high-growth MarTech product, lead technical strategy, and work directly with founders, data scientists, and clients to deliver impactful, intelligent solutions. If you''re excited by ownership, innovation, and the chance to make a real mark in a scaling business, this is your opportunity.If you re looking for a role where your voice matters, your technical brilliance is valued, and your work directly influences product growth and innovation, we d love to hear from you. The Role at a Glance: Senior Backend Developer Hybrid - Leeds HQ 1 2 Days per Week £70,000 - £90,000 DOE Plus Benefits: including a 4-day week we work smarter so that we can work a shorter week. 23 days annual leave + bank holidays, health insurance, retail and leisure perks, electric car scheme.You ll need to feel comfortable in the company of our ..... full job details .....