Senior Java Developer (Trading Platform)

Crypto.com; City Of London; On-site; GBP 70,000 - 90,000; Full time

Job summary

A leading cryptocurrency platform in London seeks an experienced Java backend developer to create high-performance trading systems. This includes designing and implementing low-latency components and collaborating effectively with product and trading teams. The ideal candidate has over 5 years of Java experience and deep knowledge of multithreading and memory models, along with strong communication skills. Competitive salary and flexible working options available.

Benefits

Competitive salary

Flexible working hours

Crypto.com visa card

Qualifications

• 5+ years of Java backend development experience.
• Deep understanding of Java core internals.
• Familiarity with low-latency messaging libraries.

Responsibilities

• Design and develop core backend systems including market connectivity.
• Implement low-latency and GC-free components.
• Collaborate with product and trading teams.

Skills

Java backend development

Multithreading

GC-free programming

Event-driven architecture

Communication skills

Tools

Aeron

ClickHouse

CI/CD tools

Job description

Overview

The Trading Infrastructure team is building a high-performance, front-to-back Trading Platform that supports multi-asset trading. The platform handles financial instruments with low-latency execution, robust risk controls, and seamless integration across trading, risk, operations, and finance workflows. The system is modular, including market data feeds, order gateways, execution algorithms, risk engines, UI dashboards, middle office reconciliation, and account infrastructure. We emphasize event-driven, deterministic design, real-time observability, and strong security. Our tech stack includes Java (low-latency), Python, Web UI (React/Ag-Grid), Aeron, ClickHouse, Kubernetes, and modern CI/CD tooling, with a focus on automation, scalability, and performance. AI-assisted development tools are leveraged to boost productivity and quality across the team.

Responsibilities

• Design and develop core backend systems including market connectivity, order routing, execution engine, risk, and position tracking.
• Implement ultra-low-latency and GC-free components using best practices in lock-free and off-heap programming.
• Apply event-driven and fully deterministic design principles to ensure traceable and predictable system behavior.
• Collaborate closely with product and trading teams to translate requirements into performant, production-ready solutions.
• Participate in performance profiling, JVM tuning, and debugging complex issues in production.
• Develop and maintain automated test suites and CI/CD pipelines.
• Engage in code reviews, architecture discussions, and technical audits to ensure high standards across the codebase.
• Use AI-driven coding tools to accelerate development and improve productivity where appropriate.

Requirements

• 5+ years of Java backend development experience, preferably in a trading or real-time system environment.
• Deep understanding of Java core internals, multithreading, memory models, and garbage collection.
• Proven experience in GC-free or low-GC programming, including use of sun.misc.Unsafe, direct buffers, and memory-mapped files.
• Familiarity with Aeron, SBE, or other low-latency messaging libraries.
• Strong grasp of event-driven architecture and experience designing fully deterministic systems.
• Solid knowledge of time-series and analytical databases like ClickHouse; exposure to kdb+ or InfluxDB is a plus.
• Experience with distributed systems, message queues, and performance tuning at the network and application layer.
• Comfortable using AI-powered development tools to enhance code quality and development speed.
• Strong testing discipline including TDD, benchmarking, and resilience testing.

Communication and Collaboration

• Proficient in English (spoken and written); Chinese or other languages are a plus but not required.
• Comfortable working in a global team with colleagues across APAC, EMEA, and North America.
• Strong communication skills; able to interface across all levels from senior leadership to engineers and stakeholders.
• Able to collaborate effectively with people from different cultural and technical backgrounds, aligning tech decisions with business goals.

Life @ Crypto.com

Empowered 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-up

Aspire career alternatives through us - our internal mobility program offers employees a new scope.

Work Perks: crypto.com visa card provided upon joining

Are you ready to kickstart your future with us?

Benefits

Competitive salary

Attractive annual leave entitlement including: birthday, work anniversary

Work Flexibility Adoption. Flexi-work hour and hybrid or remote set-up

Aspire career alternatives through us. Our internal mobility program can offer employees a diverse scope.

Work Perks: crypto.com visa card provided upon joining

Our 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 worlds 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 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.