Java L3 Support Engineer

Natobotics; Greater London; On-site; GBP 73,800 - 110,700; Part time

Job summary

A leading financial technology firm is seeking an experienced L3 Java Support Engineer located in London. In this role, you will provide advanced production support for mission-critical banking applications. You must have strong expertise in Core Java and SQL, along with hands-on experience in L3 Production Support. The ideal candidate will collaborate closely with various teams to ensure system stability and performance. Familiarity with UNIX/Linux and ITIL processes is essential for success in this fast-paced environment.

Qualifications

• Strong hands-on experience in Core Java with multithreading and collections.
• Solid experience in SQL, including complex queries and performance tuning.
• Good knowledge of UNIX/Linux commands and shell scripting.
• Proven experience in L3 Production Support or Application Support roles.
• Familiar with log analysis tools and debugging techniques.
• Understanding of ITIL incident/problem management processes.

Responsibilities

• Provide advanced production support for mission-critical applications.
• Troubleshoot complex issues to ensure system stability.
• Collaborate with development and infrastructure teams to maintain high availability.

Skills

Core Java

SQL

UNIX/Linux

L3 Production Support

Log analysis tools

Incident/problem management (ITIL)

Banking/Financial Services experience

Job description

Job Title: L3 Java Support Engineer (Banking / Financial Services)

Location: London

Employment Type: Contract

Role Overview

We are seeking an experienced L3 Java Support Engineer with a strong background in banking/financial systems to provide advanced production support for mission-critical applications. The role involves troubleshooting complex issues, ensuring system stability, and collaborating with development and infrastructure teams to deliver high availability and performance.

Required Skills & Experience

• Strong hands‑on experience in Core Java (multithreading, collections, exception handling).
• Solid experience in SQL (complex queries, joins, performance tuning).
• Good working knowledge of UNIX/Linux commands and shell scripting.
• Proven experience in L3 Production Support / Application Support roles.
• Experience with log analysis tools and debugging techniques.
• Understanding of incident/problem management processes (ITIL preferred).
• Experience in Banking or Financial Services domain (payments, trading, cards, core banking, etc.).