VP, Trading Systems Developer in London

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.

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.

This role sits at the intersection of software engineering and infrastructure, with a primary objective of minimizing latency, maximizing throughput, and ensuring deterministic performance across critical trading workflows. We are looking for a Trading Systems Engineer to design and build high performance trading systems in support of market data ingestion, order routing and execution. The ideal candidate will have worked on the development of low latency trading systems and have experience of high‑performance messaging in Java, though similar experience in C++ will be considered. Further to the above, the candidate will have experience of optimizing multiple layers of the technology‑stack, from the application layer, through to the OS, network layers and supporting hardware.

This role will provide cross‑cutting solutions in support of multiple businesses, including OTC, Market Making, Prop and Systematic Trading. You will have the ability to work independently, have strong analytical and problem‑solving skills, with a desire to own issues and see them through to resolution. Embrace and champion the thoughtful adoption of AI to improve team performance and business outcomes. Leverage AI tools (e.g., generative AI, automation platforms, data copilots) to improve productivity, decision‑making, and output quality in your day‑to‑day work.

What We’re Looking For:

• Excellent core Java skills
• Extensive experience of Java Application and Garbage Collection optimization
• Exceptional knowledge of concurrency and multithreaded programming
• Experience of developing low latency pricing and trading systems
• Knowledge of low latency messaging (e.g. Aeron, 29West)
• Solid understanding of networking fundamentals (TCP/UDP, multicast, routing, switching, congestion control) and use of kernel bypass technologies (e.g., DPDK, Solarflare/OpenOnload, RDMA).
• Familiarity with Linux internals, to include scheduling, memory management, and performance tuning.

Bonus Points:

• eFX development experience in a low latency, zero GC environment
• Knowledge of institutional encodings (FIX, SBE)
• Fault tolerant, high availability, distributed computing
• Docker / Kubernetes / AWS

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 us.