Senior Java Engineer for High-Perf FinTech (Hybrid, UK)

Ascendion; Greater London; Hybrid; GBP 90,000 - 110,000; Full time

Job summary

Ascendion is seeking a Senior Java Consultant in London, UK for a hybrid, full-time role. The candidate will join a banking technology team building high-performance applications with a focus on low-latency systems.

Required are strong Core Java skills, expertise in concurrency, and experience in equity or fixed income domains, with a preference for algo-trading exposure and financial services background.

Qualifications

• Strong Core Java development experience.
• Excellent knowledge of concurrency and multithreading.
• Experience building high-performance, low-latency applications.
• Equities or Fixed Income experience preferred.
• Low-latency experience across asset classes considered.
• Financial services experience highly desirable.
• Prior algo-trading or pricing experience is a plus.

Responsibilities

• Develop and maintain high-performance Java services for banking applications.
• Collaborate with trading and infrastructure teams to optimize low-latency systems.
• Implement robust concurrency patterns and scalable architectures.
• Contribute to pricing/algorithmic workflows within asset classes.

Skills

Core Java

Concurrency

Low-latency

High-performance

Algo-trading exp

Equities FI exp

Financial services

Job description

Ascendion is seeking a Senior Java Consultant in London, UK for a hybrid, full-time role. The candidate will join a banking technology team building high-performance applications with a focus on low-latency systems.

Required are strong Core Java skills, expertise in concurrency, and experience in equity or fixed income domains, with a preference for algo-trading exposure and financial services background.