We Are Sparta

Sparta is the next-generation commodity trading platform.

We give trading desks the clarity, control, and collaboration they need to move faster and trade smarter. In February 2025, we secured $42 million in Series B funding. Now we’re scaling up across the business, and it’s an exciting time to join.

Our people are the driving force behind everything we do. At Sparta, you’ll be trusted to take ownership, backed by a team who wants you to succeed. You’ll be challenged, supported, and given room to grow. Because building something this ambitious takes everyone at their best.

At Sparta, your work has reach. From improving our platform, to powering smarter decisions for our customers, to changing how commodity trading is done around the world.

And because we’re growing fast, you won’t just build your career. You’ll accelerate it, with a level of ownership and impact you simply don’t get at bigger, more bureaucratic companies.

The role

Traders act on what they see in Sparta. That makes reliability a product feature,



not an afterthought - and it’s why this role exists.

This is a deliberate 50/50 split. Half your time is backend engineering: designing and building the distributed services and pipelines that move real-time market data through our platform. The other half is reliability engineering: making those systems observable, resilient, and cheap to operate. If you’ve ever shipped a service and then wished you owned how it ran in production, this is that job.

We’ve kept the split explicit rather than tidy. Our Platform Engineering team owns the shared platform, tooling and automation; you’ll be a close partner to them, and the reliability of your own services is yours.

We’re looking for people who thrive in an empowered environment - engineers who are comfortable being given problems to solve rather than solutions to implement. You should enjoy working at pace, value autonomy, and prefer to ask for forgiveness rather than
permission.

Whereas S

📌 Senior Backend (Barcelona)
🏢 Sparta
📍 Barcelona