Web3 Java Jobs in London, United Kingdom

Who We Are:Galaxy is a global leader in digital assets and data center infrastructure, delivering solutions that accelerate progress in finance and artificial intelligence. We believe that blockchain and digital asset innovation will transform how value moves through the world – and we’re building the products and services to make that future a reality. Our institutional digital assets platform spans trading, investment banking, asset management, staking, self-custody, and tokenization technology. We also invest in and operate cutting-edge data center infrastructure to power AI and high-performance computing, addressing the growing demand for scalable energy and compute in the U.S. We work at the intersection of finance and technology, helping institutions, startups, and developers navigate a digitally native economy. Led by CEO and Founder Michael Novogratz, our team blends deep crypto expertise with institutional experience and a shared commitment to shaping the future of Web3 and AI. Galaxy is headquartered in New York City, with offices across North America, Europe, the Middle East, and Asia. To learn more about our businesses and products, visit www.galaxy.com.

What We Value:

We are a diverse team of free thinkers, and fast movers united to help investors and creators energize the global economy. We are looking for individuals who thrive in a culture of builders and overachievers and embrace high performance, transparent feedback, and a mission-first approach. Our culture shapes our way of working and gets us where we want to be.

• Seek Excellence.
• Be Selective To Be Effective.
• Be Highly Aligned, Loosely Coupled.
• Disagree Transparently.
• Encourage Independent Decision-Making.
• Build Dream Teams.

Who You Are:

We’re seeking an experienced EMS / SOR Developer to join our team in London. You will have a proven track record of building and benchmarking execution algorithms from the ground up.

Ideally, you’ve been actively engaged with the crypto markets, or have a strong curiosity about them. In this role, you will take a lead in developing greenfield algorithmic trading systems, shaping the core of our next-generation trading infrastructure.

You’ll work closely with trading teams, stakeholders, and external partners to deliver critical initiatives that drive our business forward. If you’re a natural problem-solver with a passion for hands-on technical development in a global, fast-paced environment, we want to hear from you.

What You’ll Do:

• Design and development of a low-latency, high-throughput EMS/Smart Order Router system
• Implement intelligent routing algorithms based on execution quality, liquidity, latency, and cost
• Collaborate with traders and product managers to refine routing logic and build new algorithmic capabilities
• Monitor and optimize system performance under real-world trading conditions
• Contribute to system resilience and business continuity
• Provide support for production trading issues

What We’re Looking For:

• 8+ years of experience developing routing strategies for specific markets (e.g., FX Markets, crypto exchanges) in Java
• Knowledge of tick data analytics and real-time market data processing
• Familiarity with cloud-based market access or hybrid deployments
• Experience working in high-frequency or algorithmic trading environments
• Experience building low-latency systems and working with multicast/unicast market data feeds
• A solid understanding of the application and infrastructure stack associated with electronic and algorithmic trading
• Strong technical background, with the ability to understand system architecture and technical workflows
• Proficiency with trading system architecture (OMS/EMS, market gateways)
• Strong understanding of concurrency, networking, and memory management
• Experience with Linux systems and performance profiling tools
• A proactive, problem-solving mindset and the ability to thrive in a fast-paced, collaborative environment

Bonus Points:

• Experience in theDeFi, or crypto space
• Exposure to regulatory or compliance-driven environments
• Familiarity with cloud-based infrastructure (e.g., AWS, GCP) or DevOps processes

What We Offer:

• Competitive base salary and discretionary bonus
• Company-paid health and protective benefits for employees and their eligible dependents
• Free virtual coaching and counseling sessions
• Opportunities to learn about the Crypto industry
• Smart, entrepreneurial, and fun colleagues
• Employee Resource Groups

*Benefits may vary depending on location.

Galaxy respects diversity and seeks to provide equal employment opportunities to all employees and job applicants for employment without regard to actual or perceived age, race, color, creed, religion, sex or gender (including pregnancy, childbirth, lactation and related medical conditions), gender identity or gender expression (including transgender status), sexual orientation, marital or partnership or caregiver status, ancestry, national origin, citizenship status, disability, military or veteran status, protected medical condition as defined by applicable state or local law, genetic information or predisposing genetic characteristic, or other characteristic protected by applicable federal, state, or local laws and ordinances.

We will endeavor to make a reasonable accommodation to the known limitations of a qualified applicant with a disability unless the accommodation would impose an undue hardship on the operation of our business. If you believe you require such assistance to complete the application process or to participate in an interview, please contact