Full-time

Senior Full-Stack Software Engineer

Posted by Sage • Winnersh, England, United-Kingdom

📍 Winnersh, England 🕒 February 18, 2026

About the Role

Job Overview

As a Senior Full‑Stack Engineer on our new UK‑based team, you will help us build a financial B2B SaaS platform using TypeScript, React, and Node.js. You’ll tackle our unique challenge: ensuring high performance on an application that handles complex financial calculations and large datasets.

With a 60/40 backend‑to‑frontend focus, this role is perfect for a proactive engineer who is passionate about building high‑performance software throughout the stack and thrives in a multicultural environment. This is a fantastic opportunity to grow your skills while shaping a new team and a cutting‑edge platform.

This is a hybrid position – working three days a week from our Winnersh office.

Key Responsibilities

  • Take full ownership of the feature development lifecycle, from concept and design to testing and deployment.
  • Collaborate with product managers, designers and other engineers to translate requirements into well‑a...

Ready to Apply?

Submit your application today and take the next step in your career journey with Sage.

Apply Now