Senior Full Stack Engineer - SidekickNew

The opportunity

The Sidekick team builds and owns the progressive web app that SumUps field sales agents rely on every day, a tool that brings together everything a seller needs in one place: creating offers on the go, signing up new merchants, managing hardware sales, and tracking commissions…

What you'll do

  • Build and maintain features across the full stack of our progressive web app,: spanning the field sales experience, back office tooling for sales agents, and emerging LLM-powered support tooling, owning work from scoping through to production

  • Participate actively in product discovery, joining user research sessions,: reviewing usage data, and contributing to prioritisation discussions alongside product

  • Work directly with sales stakeholders to understand their needs, distinguish: between what's requested and what's actually needed, and propose solutions with clear trade-offs

  • Contribute to raising engineering standards across the team, through: documentation, code quality, and proactive process improvements

  • Integrate with external systems such as Salesforce where required, and help: shape how data flows across domains to create a consistent experience for field sellers

  • Hands-on experience with a full-stack framework, Next.js, Remix, Nuxt, or: similar, with a clear track record of shipping real-world features end-to-end.

What they're looking for

  • Strong, proven experience with React and TypeScript, building scalable,: maintainable applications in a production environment.
  • Experience building or consuming RESTful APIs and working within complex: micro service systems, familiarity with Go is welcome.
  • Comfortable as a Kubernetes user, with exposure to working in cloud-native, distributed environments.
  • Experience working in a product-led or dual-track agile team alongside our: product team, contributing to product decisions, not just technical ones.