We Are Sparta

Sparta is the AI leader for commodity trading, home to Leonidas AI, the first operating system for oil and commodity traders.

Backed by $42 million in Series B funding led by One Peak, with participation from returning investors FirstMark and Singular, the same investors behind AI leaders like Legora, Dataiku, and Synthesia. Most companies are building a chatbot on top of data. We've built an agent with an actual reasoning layer, grounded in years of proprietary market data and in-house trading expertise nobody else has.

We're scaling fast, and it's an exciting time to join. From independents to multinationals, the world's leading commodity teams use Sparta and Leonidas AI to move faster, trade smarter, and stay ahead of the market.

At Sparta, you'll be trusted to take ownership, backed by a team who wants you to succeed. AI is how we build here, not just what we sell. Good ideas move fast, and yours could go from staging to production in a couple of hours, whatever department you're in. You'll be challenged, supported, and given room to grow, building the AI that's changing how commodity trading gets done.

Your work has reach. From shaping Leonidas AI, to powering smarter decisions for traders around the world, to changing how commodity trading is done. And because we're growing fast, you'll accelerate your career with a level of ownership and impact you simply won't get at bigger, slower-moving companies.

Fuel Oil Commodity Owner

This role can be based in either London or Singapore.

Fuel oil constantly surprises traders with its outsized moves. The question is whether you see it before everyone else does. Sparta is building the data platform that fuel oil and feedstocks traders, analysts and commercial teams use to make faster, better decisions. We cover forward curves, price assessments, market intelligence and trade flows across the global energy complex, and Fuel Oil is one of our most technical verticals. We're looking for someone to own it.

This role is an opportunity to own a vertical, build your profile, and be genuinely central to the direction of the business. We want someone who knows heavy product markets deeply and who is not afraid to build new things. Our Fuel Oil vertical already runs on market-leading tools and you will take them even further.

The role

This isn't an analyst position or a support role. It's the chance to become Sparta's primary Fuel Oil voice, internally and externally, and to shape what we build for the vertical.

You'll sit at the intersection of commercial, product, and market expertise. You'll be the internal and external authority on Fuel Oil: responsible for the health, growth, and strategic development of the vertical, while acting as a key face to clients on complex and technical engagements.

You'll need to be equally comfortable deep in the market microstructure of Fuel Oil — cash differentials, arbitrage dynamics, blend economics, price relationships across bunkering, power generation and feedstocks — as you are presenting to senior client stakeholders, shaping the product roadmap, being the market authority on the most opaque part of the oil barrel, and harnessing the power of AI to turn your knowledge into the next generation of advanced tools for fuel oil trading.

The role reports to our Head of Commodities.

What you'll do

Fuel Oil vertical ownership and strategy (~35% of role)

Own the Fuel Oil vertical end to end: its commercial performance, data integrity and strategic direction

Serve as the internal advocate for fuel oil and feedstocks across product, sales, engineering and research teams

Define and prioritise the Fuel Oil product roadmap with the product and technology teams

Act as the primary subject matter expert for all Fuel Oil decisions across the business

Building tools, models and AI agents (~25% of role)

Design and build Sparta’s next generation of heavy products analytical tools and pricing models

Own the fuel oil knowledge base behind our AI products: write the domain rules, test answers against desk judgement and catch errors before clients do