Tech Lead - Low-Latency FX Engineering

LSEG•New York, NY

9d•$147,500 - $245,900•Onsite

About The Position

SEG (London Stock Exchange Group) is looking for a hands-on Tech Lead (Java) to drive the design, development, and delivery of large-scale, low-latency trading platforms within their FX engineering group. This role combines deep technical contribution with technical leadership, guiding engineers and shaping the architecture and direction of critical trading systems. The individual will remain close to the code while also leading projects end-to-end, partnering with architects, influencing engineering standards, and mentoring team members to deliver high-performance, highly reliable solutions. SEG values strong technical expertise, ownership, innovation, and a collaborative mindset.

Requirements

Strong hands-on expertise in Java development, with a passion for writing clean, efficient, production-grade code
Proven experience operating as a technical lead or senior engineer influencing design and delivery
Deep understanding of data structures, algorithms, and system design principles
Expertise in concurrency, multithreading, and performance optimization
Strong knowledge of low-latency system design and memory management
Experience with profiling, benchmarking, and performance tuning tools
Familiarity with network protocols (TCP, UDP, HTTP) and techniques for optimizing network communication
Proven track record of owning and delivering complex, business-critical systems
Experience working in agile environments with modern engineering practices
Exposure to DevOps practices, including automation of testing, deployment, and infrastructure
Strong problem-solving skills with the ability to investigate and resolve complex, cross-system issues
Ability to work effectively in a globally distributed team, balancing leadership and hands-on delivery

Nice To Haves

Experience with cloud platforms and cloud-native architecture
Knowledge of SQL and NoSQL databases
Experience mentoring or leading engineers in a technical capacity
Strong passion for technology and continuous learning
Excellent communication and stakeholder management skills

Responsibilities

Lead the design and development of low-latency trading systems, while remaining an active, hands-on contributor to the codebase
Own and drive technical delivery of projects, from design through implementation, testing, and production rollout
Provide technical leadership and mentorship to engineers, fostering best practices in coding, performance, and system design
Partner closely with architects, product teams, and other engineering groups to define and deliver scalable solutions for FX trading
Contribute to and guide the evolution of system architecture, ensuring performance, scalability, and resilience
Design, build, and support high-performance trading venues and services
Lead efforts to improve system observability, reliability, and operational excellence
Develop automation to detect, prevent, and resolve production issues, minimizing latency and downtime
Drive continuous improvements across performance optimization, cost efficiency, security, and developer experience
Champion agile and DevOps practices, promoting CI/CD, automated testing, and infrastructure as code