Application Support Engineer

Role Overview

Talan is seeking an experienced Application Support Engineer to join a high-performing global team supporting the eTrading environment for a leading investment banking client.

Operating within a Production & Application Support function, this role sits at the heart of front-office trading technology, ensuring the stability, performance, and continuous improvement of critical electronic trading platforms.

You will work in a complex, low-latency environment supporting high-volume trading flows, interacting closely with trading desks, development teams, and infrastructure specialists across a global follow-the-sun support model.

Key Responsibilities

Oversee day-to-day production support activities, including monitoring, incident management, and capacity planning

Act as a key point of contact for issue resolution, liaising with traders, developers, infrastructure teams, and external vendors

Take ownership of assigned applications and platforms, developing deep technical expertise

Support and enhance electronic trading systems, including pricing engines, algorithmic trading components, and STP workflows

Manage connectivity to external trading venues (e.g. exchanges, ECNs, market data providers)

Contribute to system design improvements, focusing on resilience, scalability, and performance optimisation

Coordinate release and change management activities, ensuring robust deployment processes

Participate in a shift-based rota (7am–6pm coverage) and on-call support, including occasional weekend work

Collaborate with global teams across Europe, North America, and Asia within a follow-the-sun support model

Continuously improve documentation, monitoring, and operational processes

Required Skills & Experience

Strong experience in Application Support within electronic trading or capital markets environments

Solid expertise across Linux and Windows server environments

Experienced withinWintel Engineering

Good understanding of market connectivity, networking, and infrastructure (firewalls, multicast, latency considerations)

Ability to analyse system performance across CPU, memory, network, and messaging layers

Proficiency in scripting and automation (e.g. Python, Shell, PowerShell, SQL)

Experience with CI/CD and deployment tools (e.g. Jenkins, Ansible, Artifactory)

Familiarity with application stacks involving Java, C++, or .NET

Strong stakeholder engagement skills with the ability to operate in a front‑office facing role

Proven ability to manage incidents and deliver improvements in high‑pressure environments

Experience with ION trading platforms or similar vendor systems

Knowledge of multicast messaging and low‑latency trading architectures

Monitoring tools such as Geneos or Zabbix

Experience with Splunk or similar log analytics platforms

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