Senior Fullstack Engineer

At Upside, we’re partnering with ambitious companies across the globe to solve complex, meaningful problems through technology. We work in focused teams, combining engineering, product thinking, and design, to deliver outcomes, not just output.

Open-source is a strategic part of our work. We build and maintain a number of open-source projects that support our clients and internal R&D. Our latest release is Enthusiast, a customizable agentic AI toolkit for e-commerce.

As a Senior Fullstack Engineer, you will play a pivotal role in designing, developing, and maintaining production-grade platforms for our global clients. This position is at the heart of our development efforts, contributing significantly to the backbone of our client-facing solutions. You'll be part of a dynamic development team, sized between 3 to 9 members, dedicated to crafting scalable and resilient backend systems.