Senior Full Stack Software Engineer

Senior Full Stack Software Engineer (Ref: 193720)Role: Senior E-Commerce Full Stack Software EngineerLocation: Bradford (Hybrid)Start: ASAPAbout the RoleWe are looking for a Senior E-Commerce Full Stack Software Engineer to play a key role in the development, optimisation and future modernisation of our high-traffic B2C websites and mobile apps. You will work across both front-end and back-end technologies, lead on performance optimisation, CRO and A/B testing, and help evolve our digital platforms over the next 18–24 months.This is a senior technical position suited to someone who can make an immediate impact, bring strong practical engineering experience, and contribute to the long-term technical vision of the team. You’ll collaborate closely with CRO specialists, SEO analysts, UX/UI designers, digital stakeholders and other engineers across a growing digital function.What You’ll DoBuild, run and optimise A/B tests and personalisation experiments to improve conversion and customer experience.Develop and maintain high-performing, responsive B2C websites and apps.Enhance SEO features, website crawlability, indexing and search ranking performance.Implement front-end improvements focused on performance, accessibility, and mobile-first best practices.Work with existing back-end technologies (Classic ASP / ASP.NET) while contributing to long-term platform modernisation.Manage and optimise digital analytics and marketing integrations using tools such as Adobe Launch, Adobe Analytics and Adobe Target.Monitor performance using tools such as New Relic and ELK, identifying and resolving bottlenecks.Contribute technical insights during Agile ceremonies and collaborate with cross-functional teams.Ensure adherence to security best practices and relevant UK compliance standards.Coach and mentor team members and support in building long-term engineering capability.What You’ll Bring10+ years’ experience in software engineering with experience building high-availability, high-traffic systems.Strong full-stack capability:Back end: Classic ASP, ASP.NET, familiarity with C# or JavaExperience working on transactional E-Commerce sites or similar high-volume digital environments.Strong practical experience with CRO, A/B testing and personalisation (Adobe Target preferred).Solid technical SEO knowledge including indexing, site architecture, structured data and mobile optimisation.Experience with performance optimisation (lazy loading, caching, code splitting) and metrics (FCP, LCP, CLS).Understanding of web security best practices (XSS, CSRF, CORS, SQLi).Ability to work autonomously, make informed technical decisions and handle multiple workstreams.Experience across digital marketing technologies, merchandising and user experience optimisation.Experience with CI/CD pipelines and DevOps tools (GitLab, Jenkins, Selenium).Experience with UK retail or multi-category E-Commerce environments.Degree in Computer Science, Software Engineering or related discipline.Who You AreA problem solver with strong technical judgement.A clear communicator who can work effectively across diverse teams.Pragmatic, delivery-focused and comfortable working at pace.Someone who can contribute knowledge, raise engineering standards, and mentor others.Able to build trust quickly and operate with autonomy.Working StyleHybrid working with the ability to commute to Bradford as required.Willingness to occasionally work additional hours to support major releases or project deadlines.Opportunity to contribute to a growing digital engineering team and influence future technical direction.Seniority levelMid-Senior levelEmployment typeFull-timeJob functionInformation TechnologyIndustriesStaffing and Recruiting #J-18808-Ljbffr