Blockchain Engineer - Hedge Fund, Prediction Markets
Full Time, Barcelona Office

About the Company

BlueWalker Capital is a hedge fund developing systematic and quantitative trading strategies native to prediction markets.

We log hundreds of millions of trades and order book ticks per day, isolate market pairs from tens of millions of combinations, and continuously monitor for a range of arbitrage opportunities 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.

About the Role

We are a small engineering team, which means your responsibilities scale rapidly and your impact is clear and foundational. Much of our infrastructure is still greenfield, and entire systems can be yours to design and own. You’ll work across the full infrastructure stack to ensure reliability, speed, and robustness of systems handling hundreds of thousands of euros in daily trade volume.

Responsibilities

Build smart order routing that balances liquidity, latency, and MEV exposure.
Engineer low-latency execution pipelines managing signature, nonces, and gas optimization.
Integrate RPC and indexer nodes for transaction submission, state reads,



and event streaming.
Make thoughtful architectural decisions, balancing risk, performance, cost, and maintainability. We offer flexibility, not hand-holding.

Who we are looking for

Hard Skills:

2+ years of hands-on production experience in Rust/Solidity.
Ability to design and write production-grade systems without LLMs, while being proficient and deeply integrated with AI tools to maximize development velocity.
A background in statistics, computer science, mathematics, physics, or other quantitative fields.

Soft Skills:

Fluent English
Self-starter with intense intellectual curiosity.
Someone eager to take unconventional paths and creatively build from the ground up.

Preferred Skills:

Familiarity with trading systems and DeFi financial markets infrastructure.
Experience developing mission-critical, high-reliability systems.

What it’s like here

Fast paced environment.
We value strong integrity.
We’re direct and honest with each other.
5 days a week, in person. Full immersion.
Project ownership and autonomy, flat company structure.
We value people who take initiative and are able to figure things out.

Company culture is informal, non-hierarchical, ambitious, collaborative and entrepreneurial.

Compensation package

Competitive compensation, tailored to ability and experience.

Benefits

Team Offsite
Adaptable Holidays
Gym Membership
3' walking to 3200 m2 gym
5' walking to FCG train station
Cutting-edge infra and technology

Links

📌 Blockchain Engineer - Hedge Fund, Prediction Markets (Santiago de Compostela)
🏢 Talent
📍 Santiago de Compostela