Senior Application Support Engineer – Elite Systematic Trading Firm - Prop Trading - Up to £450[...]

JR United Kingdom; City Of London; Remote; GBP 450,000; Full time

Job summary

A leading elite systematic trading firm is seeking a Senior Application Support Engineer to join their London team. The role involves supporting low-latency trading systems, automating processes, and collaborating with various teams to ensure operational excellence. Ideal candidates should have extensive experience with trading systems, strong proficiency in Python, and a proactive approach to problem-solving.

Qualifications

• 5+ years’ experience supporting high-performance trading systems.
• Strong knowledge of trade lifecycle and FIX protocol.
• Skilled in Python scripting for automation.

Responsibilities

• Deliver L1/L2 support for trading applications across global markets.
• Automate and enhance support functions using Python.
• Collaborate with traders and developers to troubleshoot live issues.

Skills

Python

Linux

Trading workflows

Automation

SQL

Monitoring tools

FIX protocol

Communication

Tools

Grafana

Splunk

Ansible

Bash

Postgres

Sybase

Oracle

Job description

Social network you want to login/join with:

Senior Application Support Engineer – Elite Systematic Trading Firm - Prop Trading - Up to £450k TC - WFH, london (city of london)

col-narrow-left

Client:

Location:

london (city of london), United Kingdom

Job Category:

Other

-

EU work permit required:

Yes

col-narrow-right

Job Views:

2

Posted:

16.06.2025

Expiry Date:

31.07.2025

col-wide

Job Description:

Senior Application Support Engineer – Elite Systematic Trading Firm - Prop Trading - Up to £450k TC - WFH

My client, an elite and fast-growing systematic trading firm, is looking for an Application Support Engineer to join a high-impact, London-based team at the cutting edge of global markets.

This is a career-defining opportunity to join an engineering-driven firm where technology is core to every decision. You will provide mission-critical support for low-latency trading systems, automate infrastructure and application processes, and collaborate directly with trading, development, and infrastructure teams.

You will operate in a high-performance environment that values precision, initiative, and continuous innovation.

Key Responsibilities

• Deliver L1/L2 support for proprietary and third-party trading applications across global markets.
• Ensure maximum uptime of latency-sensitive trading platforms, proactively identifying and resolving production issues.
• Automate and enhance support functions using Python, SQL, and monitoring tools like Splunk and Grafana.
• Collaborate with traders, developers, and network engineers to troubleshoot live issues and optimise trading operations.
• Build, maintain, and document proactive alerting systems and health checks for internal and external connectivity (e.g., FIX, REST APIs).
• Drive operational excellence through robust incident management, process improvement, and knowledge-sharing across regions.
• Play a key role in onboarding new trading desks, products, and exchanges—delivering low-latency infrastructure and reliable integration.

Ideal Candidate Profile

• 5+ years’ experience supporting high-performance trading systems in a Python and Linux-heavy environment.
• Strong knowledge of the trade lifecycle in one or more asset classes (e.g., FX, Commodities, Equities).
• Proven expertise in FIX protocol, trading workflows, and exchange connectivity.
• Skilled in scripting for automation (Python, Bash) and familiar with tools like Ansible and Geneos.
• Experience with relational databases (Postgres, Sybase, Oracle) and writing performant SQL queries.
• Knowledge of production-grade monitoring tools (e.g., Grafana, Splunk), alert tuning, and system health validation.
• Understanding of low-latency infrastructure, colocation environments, and performance tuning (CPU affinity, NUMA).
• Strong communicator with a sense of urgency and ownership; capable of leading investigations and mentoring junior staff.

To apply, please send your CV to [emailprotected] or respond directly to this advert.