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James Joseph Associates jobs

Java Quantitative Developer

£41,000 - 73,500
James Joseph Associates
City Road 152-160, Broad Street
£41,000 - 73,500
Company Size icon
Company Size
<50
Company Type icon
Company Type
Services
Exp Level icon
Exp Level
Regular
Job Type icon
Job Type
Full-Time
Language icon
Language
English
Visa sponsorship icon
Visa sponsorship
No

Requirements

Must:
We are looking for candidates with expertise in market-making or algorithmic trading, possessing a deep understanding of order book dynamics and pricing techniques. A proven track record in Java programming, particularly in building fast, low-latency trading systems, is essential. You should have strong familiarity with market data and order execution protocols (e.g., FIX, binary, or custom APIs), alongside hands-on experience with JVM tuning, garbage collection, and deep performance analysis. Knowledge of fast messaging and data serialization technologies for high-speed environments, as well as proficiency in networking concepts (including TCP/UDP, multicast, and low-level optimizations like DPDK or kernel bypass) is required. Mastery of concurrent programming, including lock-free algorithms and shared memory architecture, is necessary. Additionally, practical experience with Linux performance tuning, a background in high-frequency trading and real-time market operations, and the ability to design tools for live trade analysis, PnL tracking, and risk alerting are important. Familiarity with time-series or relational databases for logging and analytics and experience with cloud platforms and containerized infrastructure (AWS, Docker, Kubernetes) are also valuable. Comfort in working in distributed teams across time zones, excellent communication skills under pressure, and a commercially sharp mindset to balance speed and risk in decision-making are essential.

Responsibilities

As a Quant Developer, you will build and refine algorithmic trading models for various digital asset exchanges and improve and maintain dynamic hedging systems and automated order execution frameworks. You will achieve top-tier speed and reliability in order processing to maximize execution quality and drive automation of core trading functions to increase scalability and reduce operational risk. Partnering with quants, you will develop, back test, and deploy strategic trading logic. You will create monitoring tools for real-time analysis of trade metrics and strategy efficiency, engineer and optimize ultra-fast connections to trading venues with a focus on throughput, and design architecture capable of handling large volumes in a latency-sensitive environment. Your tasks will include implementing and managing high-performance messaging frameworks like Aeron and SBE, performing in-depth profiling and tuning to eliminate latency and optimize microsecond-level performance, and developing robust order routing and execution components that handle market volatility. Additionally, you will apply advanced networking principles to minimize round-trip times and network jitter, continuously assess and remove inefficiencies in JVM performance and memory management, and strengthen operational resilience through improved monitoring, alerting, and fault tolerance.

Description


Our company is a leading and well-established player in the Digital Asset and Cryptocurrency Quantitative/Algorithmic trading industry. We are currently experiencing exponential growth and enjoying record profits. As part of this expansion, we are seeking a Trade Platform Specialist with a focus on either Quantitative Development or low-latency performance optimization. You will be involved in greenfield projects aimed at building and enhancing our low latency trading systems. Working in a fast-paced trading environment, you will collaborate closely with expert traders, quantitative analysts, and engineering specialists to craft and fine-tune trading strategies across both spot and derivative markets, contributing to our complex, high-frequency trading landscape.
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