Remote Web3 Java Jobs in London, United Kingdom

We are a team to design, develop, maintain, and improve software for various ventures projects, i.e., projects that are adjacent to our core businesses and are bootstrapped fast with a lean team. You will be actively involved in the design of various components behind scalable applications, from frontend UI to backend infrastructure.But it doesn't stop there...In another bold move, Crypto.com acquired Nadex (North American Derivatives Exchange) who were founded in 2008 and is the premier US exchange for binary options, call spreads, and knock-outs, offering secure and innovative ways to participate in the markets. We are regulated by the Commodity Futures Trading Commission (CFTC) as a registered DCO and DCM. The North American Derivatives Exchange (NADEX), a wholly owned subsidiary of  Crypto.com, is fully regulated Chicago-based derivatives Exchange. It is unique in its offering, as it is the first exchange where retail investors can become members of an exchange directly, without the need for a broker. On the Nadex exchange, we list innovative capped-risk derivatives contracts on a wide range of global financial markets.

What You'll Do

• Develop, test, and maintain high-quality, low-latency Java applications handling millions of requests per day.
• Collaborate with cross-functional teams to design systems that meet business and regulatory requirements.
• Continuously improve system performance and scalability through thoughtful design and optimization.
• Implement automated testing, CI/CD pipelines, and performance monitoring.
• Document system workflows, architecture, and design decisions.
• Participate in peer code reviews and design discussions.

Must-Have Qualifications

• 5+ years of Java development experience.
• Strong focus on concurrency, garbage collection tuning, and low-level performance optimizations.
• Proficient in data structures and memory-efficient design patterns.
• Solid experience in low-latency trading systems, particularly in Order Management Systems (OMS) and Execution Management Systems (EMS).
• Strong system design skills; capable of explaining full system workflows and identifying scalability bottlenecks.
• Skilled at recommending improvements to reduce latency and increase throughput.
• Experience with Spring Framework, and Java build tools (Gradle/Maven).
• Comfortable working in Linux environments and understanding of OS-level behavior.
• Effective communicator and a collaborative team player.

Nice-to-Have Experience

• Cloud technologies (e.g., AWS or Azure)
• Experience with our tech stack and tools–Kafka, Gradle/Maven, Grafana, PostgreSQL, Python
• GC-free system design for ultra-low-latency applications
• Knowledge or hands-on experience with Aeron
• Knowledge or hands-on experience with FIX protocol
• Familiarity with messaging systems such as RabbitMQ or Artemis
• Understanding of financial markets, derivatives pricing, or risk management
• Experience with DevOps tools: Jenkins, Docker, Kubernetes, Ansible

#LI-SF1#LI-MidSenior#LI-HybridLife @ Crypto.comEmpowered to think big. Try new opportunities while working with a talented, ambitious and supportive team.Transformational and proactive working environment. Empower employees to find thoughtful and innovative solutions.Growth from within. We help to develop new skill-sets that would impact the shaping of your personal and professional growth.Work Culture. Our colleagues are some of the best in the industry; we are all here to help and support one another.One cohesive team. Engage stakeholders to achieve our ultimate goal - Cryptocurrency in every wallet.Work Flexibility Adoption. Flexi-work hour and hybrid or remote set-upAspire career alternatives through us - our internal mobility program offers employees a new scope.Work Perks: crypto.com visa card provided upon joiningAre you ready to kickstart your future with us?BenefitsCompetitive salaryAttractive annual leave entitlement including: birthday, work anniversaryWork Flexibility Adoption. Flexi-work hour and hybrid or remote set-upAspire career alternatives through us. Our internal mobility program can offer employees a diverse scope.Work Perks: crypto.com visa card provided upon joiningOur Crypto.com benefits packages vary depending on region requirements, you can learn more from our talent acquisition team.About Crypto.com:Founded in 2016, Crypto.com serves more than 150 million customers and is the world's fastest growing global cryptocurrency platform. Our vision is simple: Cryptocurrency in Every Wallet™. Built on a foundation of security, privacy, and compliance, Crypto.com is committed to accelerating the adoption of cryptocurrency through innovation and empowering the next generation of builders, creators, and entrepreneurs to develop a fairer and more equitable digital ecosystem.Learn more at https://crypto.com.Crypto.com is an equal opportunities employer and we are committed to creating an environment where opportunities are presented to everyone in a fair and transparent way. Crypto.com values diversity and inclusion, seeking candidates with a variety of backgrounds, perspectives, and skills that complement and strengthen our team.Personal data provided by applicants will be used for recruitment purposes only.Please note that only shortlisted candidates will be contacted.We may use artificial intelligence tools to analyze the content of your Resume/CV against the specific requirements for the position. The purpose is to support our recruitment team in reviewing applications more effectively. These tools assist our recruitment team in their evaluation of your application by providing recommendations, but they do not replace human judgment. Final hiring decisions are ultimately made by humans who consider the insights generated by the tools along with other relevant information. If you would like more details about how your personal information is processed, please contact us.