Senior Engineer, Trading Product Engineering

Bullish, Inc.; Greater London; On-site; GBP 120,000 - 180,000; Full time

Job summary

Bullish, Inc. is seeking a Senior Engineer for Trading Product Engineering in London. You will design and deliver low-latency Java code powering the Bullish Exchange, working across a hybrid architecture that blends a Central Limit Order Book with proprietary market making.

You will optimize performance, expand automated testing, and collaborate with cross-functional teams to ensure reliability in high-throughput trading environments.

Qualifications

• Strong Java (17+) fluency with performance tuning.
• Track record of designing and building high-throughput, low-latency systems.
• Hands-on experience with agentic AI development: LLM integration, prompt engineering, and SDLC automation.
• Solid understanding of middleware and messaging technologies such as Chronicle Queue, RabbitMQ, Aeron, and Kafka.
• Working knowledge of Spring or Micronaut, Docker, and Kubernetes.
• Deep knowledge of testing methodologies, SDLC practices, and CI/CD pipelines.
• Ownership of the components the Exchange depends on.

Responsibilities

• Design and deliver reusable, reliable, low-latency Java code powering the Exchange.
• Raise the bar on code quality, organization, and automation as the system scales under load.
• Profile and resolve performance bottlenecks in the order-processing path.
• Improve stability through automated tests at unit, integration, and performance levels.
• Collaborate across a distributed team of engineers, product managers, and project managers.

Skills

Java 17+

Performance tuning

AI development

Middleware messaging

Chronicle Queue

RabbitMQ

Aeron

Kafka

Spring

Micronaut

Docker

Kubernetes

CI/CD

Testing methodologies

SDLC practices

Ownership

Tools

Docker

Kubernetes

Spring

Micronaut

Job description

## Senior Engineer, Trading Product EngineeringApplylocations: Londontime type: Full timeposted on: Posted 30+ Days Agojob requisition id: JR2001236## **About Bullish**## Bullish is an institutionally focused global digital asset platform that provides market infrastructure and information services. These include: **Bullish** **Exchange** – a regulated and institutionally focused digital assets spot and derivatives exchange, integrating a high-performance central limit order book matching engine with automated market making to provide deep and predictable liquidity. Bullish Exchange is regulated in Germany, Hong Kong, and Gibraltar. **CoinDesk** **Indices** – a collection of tradable proprietary and single-asset benchmarks and indices that track the performance of digital assets for global institutions in the digital assets and traditional finance industries. **CoinDesk** **Data** - a broad suite of digital assets market data and analytics, providing real-time insights into prices, trends, and market dynamics. **CoinDesk** **Insights** – a digital asset media and events provider and operator of Coindesk.com, a digital media platform that covers news and insights about digital assets, the underlying markets, policy, and blockchain technology.**Reports to:**Vice President, Engineering**Engineering Organization & Culture**At Bullish, we are engineering the institutional standard for the digital asset industry. Our mission is to build a platform centered on security and compliance, requiring a commitment to technical excellence that extends beyond delivering code. As a global organization, we set a high bar for those driven to do their best work alongside experienced, deeply specialized peers.Engineers here treat development as a craft and own the outcome from concept to deployment. Our teams bring structure to ambiguity and shape the frameworks that support a global organization. We refuse to compromise on quality and seek problem solvers who thrive on complex technical challenges with real market consequences.**The Team: Trading Product Engineering**The Trading Product Engineering team builds the core distributed systems that drive the global trading experience on Bullish Exchange. We own the end-to-end order lifecycle, orchestrating a hybrid matching engine that combines a Central Limit Order Book with proprietary Automated Market Making. Our high-throughput APIs enable trading across Spot, Futures, and Options. The work demands absolute correctness in managing complex financial state transitions, translating intricate market structures into scalable solutions.**What You'll Do*** Design and deliver reusable, reliable, low-latency Java code that powers the Exchange.* Raise the bar on code quality, organization, and automation as the system scales under load.* Profile and resolve performance bottlenecks in the order-processing path.* Improve stability through automated tests at the unit, integration, and performance layers.* Collaborate across a distributed team of engineers, product managers, and project managers.**What You'll Bring*** Strong Java (17+) fluency with experience in performance tuning.* Track record of designing and building systems for high throughput and low latency.* Hands-on experience with agentic AI development: LLM integration, prompt engineering, and SDLC automation.* Solid understanding of middleware and messaging technologies such as Chronicle Queue, RabbitMQ, Aeron, and Kafka.* Working knowledge of Spring or Micronaut, Docker, and Kubernetes.* Deep knowledge of testing methodologies, SDLC practices, and CI/CD pipelines.* Ownership of the components the Exchange depends on.**Nice to Haves*** Experience working on core trading functionality such as order matching and orderbook generation.* Familiarity with financial derivative products (Options, Futures), the FIX protocol, and related workflows.* 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.**