Top Tech Jobs & Startup Jobs in London

The Senior iOS Engineer at SumUp will develop the SumUp Pay iOS app, focusing on features, performance, architecture, and cross-functional collaboration. They will ensure code quality and user experience while working with various teams.

Lead Europe social media strategy and execution across Instagram, TikTok, Facebook and YouTube. Build operating rhythms, editorial planning, influencer/creator programs, and reporting. Manage and mentor a small social team, align cross-functional stakeholders, and use data to optimize performance and growth.

The iOS Engineer will enhance developer experience, maintain CI/CD pipelines, improve the iOS codebase, and support product stability for SumUp's mobile applications.

Lead SumUp's cross-border tax function, owning permanent establishment monitoring, Pillar 2/GloBE calculations, double tax treaty and EU Directive application, Public CbCR disclosure, and transfer pricing review. Act as technical authority for internal stakeholders, coordinate with Accounting/Controlling, and manage external advisors to ensure compliance and defend positions during audits.

Own, design, build and maintain backend services for neobanking features (transfers, open banking, savings, payments). Lead end-to-end delivery, migrations, observability, incident response, architecture and code quality. Collaborate with product, design, data, security and operations to ship reliable, regulated fintech features.

Own end-to-end recruitment for Sales roles across Europe. Partner with Sales leaders to design scorecards and interview loops, source candidate personas, leverage TA tools and data to optimise funnels, run weekly reviews, and champion excellent candidate experience.

Design and implement end-to-end tax accounting and reporting framework, translate tax positions into financial reporting and cash forecasts, build automated data pipelines, govern financial models, and partner with Tax, Accounting, Controlling, FP&A, and Treasury to ensure accurate, auditable outputs.

Lead revenue and customer acquisition budget planning for acquisition channels, build scalable financial models and scenario analyses, act as finance business partner to channel leads, run deep-dive analyses by country/category/channel, build business cases and forecasts, migrate planning to scalable tools, and mentor an analyst/intern.

The Engineering Manager will co-own product delivery, grow and support their team, promote cross-functional alignment, drive operational excellence, and contribute hands-on when necessary.

As an IT Internal Auditor, you'll conduct audits focusing on IT risks and controls, assess security frameworks, and improve audit efficiency through data analytics while preparing reports for senior stakeholders.