Principal Engineer, Trading Engineering

The Bullish Group has built an ecosystem focused on developing financial services for the digital assets sector through technology and investment businesses. These include: Bullish Exchange - digital asset trading services that utilize central limit order matching and proprietary market making technology to deliver deep liquidity and tight spreads within a compliant framework. The business is licensed by the Hong Kong SFC, German Federal Financial Supervisory Authority (BaFIN), and the Gibraltar Financial Services Commission. Since its launch in November 2021, Bullish Exchange has surpassed US$1.1 trillion in total trading volume, with 2H 2024 volume exceeding US$2 billion per day. Bullish Capital - an investment company which offers strategic capital, industry expertise and an extensive network of resources to support initiatives that connect conventional finance with the revolutionary possibilities of the digital economy. CoinDesk - an award-winning media, events, indices and data business servicing the global crypto economy. 

Reports to:

Chief Technology Officer

As a Principal Engineer in Trading Engineering, you will play a critical role in architecting and optimizing our high-performance, low-latency trading systems. This individual contributor position focuses on utilizing your extensive expertise in Java development to design and implement optimized micro-services, matching engines, and FIX flows. You will collaborate closely with quant engineering and product teams to deliver cutting-edge trading solutions.

Role & Responsibilities

• Architect and optimize trading systems to ensure they meet the highest standards of performance and reliability.

• Collaborate with quant engineering and product teams to define best-in-class products and translate them into technical designs with a focus on performance.

• Engage with stakeholders and senior management to gather feedback and develop tactical and strategic solutions.

• Provide Level 3 support with high-level debugging skills, designing plans to tackle production issues 24/7.

• Design, build, and maintain efficient, reusable, and reliable Java code, implementing performant and quality modules.

• Measure and tune Java code and middleware solutions for optimal performance, identifying bottlenecks and devising solutions.

• Maintain high standards of code quality, organization, and automation.

Experience & Qualifications

• Degree in Computer Science or a related field.

• 10+ years of experience as a Java backend engineer, with mastery in Java 17+ and key JDK classes/packages, especially Java Collections and Concurrency.

• Proven experience in architecting trading systems.

• Solid understanding of trading products like Spot, Margin, and various derivatives.

• Experience in writing low-GC or no-GC Java applications and implementing trade matching engines.

• Hands-on familiarity with Java frameworks such as Spring/Micronaut.

• Knowledge of API development, RESTful and WebSocket designs, and frameworks

• Experience with FIX protocols and related workflows.

• Expertise in designing high-throughput, low-latency systems from the ground up.

• Proficiency in performance measurement and tuning.

• Proficient with git (GitHub), Docker, Kubernetes, JIRA, Confluence.

• Understanding of messaging technologies like Rabbit MQ, Solace, Aeron, etc.

• Knowledge of network protocols and computer architecture

• Familiarity with DevOps and CI/CD practices.

Bonus Experience

• Familiarity with Google Cloud Platform (GCP).

• Understanding of blockchain technologies.

Bullish is proud to be an equal opportunity employer. We are fast evolving and striving towards being a globally-diverse community. With integrity at our core, our success is driven by a talented team of individuals and the different perspectives they are encouraged to bring to work every day.