BlueWalker Capital is a proprietary trading firm developing systematic and quantitative trading strategies native to prediction markets.We log billions of trades and order book ticks per day, isolate market pairs from hundreds of millions of combinations, and continuously monitor for a range of market inefficiencies we execute on. It's still early days for us—we are deepening a moat across trading infrastructure, datasets, and modeling.We trade algorithmically using our own balance sheet, generating daily returns exceeding 1% with the capacity to rotate hundreds of thousands of euros in daily volume.Our mission is to become the leading hedge fund in this emerging asset class, delivering investment returns while making prediction markets efficient as the world's most accurate source of truth.Backed by world-class investorsDaniel Howard is the Founder and Managing Partner of Halo Capital, a digital assets venture fund associated with Brevan Howard. Previously, he was a Principal at 10T Holdings, a Machine Learning Engineer at Spark Cognition, and a Data Scientist at Verisk.



Daniel also spent over seven years in academia across Columbia University’s Engineering and Business schools.Wouter Gort - Hummingbird VenturesWouter Gort is a Partner at Hummingbird Ventures, where he leads Nomads, the firm's fund-of-funds. Previously, he co-founded Greyhound Capital and led investments in companies such as Revolut, Toss, Brex, N26, and Marqeta. Wouter also seeded a startup hedge fund that was acquired by integral market maker IMC Trading in 2023.About the RoleWe are a small engineering team, which means your responsibilities scale rapidly and your impact is clear and foundational. You would own the execution path end to end: order submission, fill handling, position tracking, reconciliation, and the risk controls around them.The stack spans two languages. Python covers services where iteration speed matters most; Rust covers latency-critical and concurrency-heavy components.Respons

📌 Trading Systems Engineer (Barcelona)
🏢 BlueWalker Capital
📍 Barcelona