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

JR United Kingdom; London; On-site; GBP 300,000 - 450,000; Full time

Job summary

A leading elite systematic trading firm is seeking a Senior Application Support Engineer to ensure maximum uptime for low-latency trading systems. This role involves delivering high-level support, automating processes, and collaborating with various teams to optimize trading operations. Ideal candidates will have extensive experience in a trading environment with strong programming skills, notably in Python and SQL.

Qualifications

• 5+ years’ experience supporting high-performance trading systems.
• Expertise in FIX protocol and trading workflows.
• Strong communicator capable of leading investigations.

Responsibilities

• Deliver L1/L2 support for trading applications across global markets.
• Automate and enhance support functions using Python and SQL.
• Drive operational excellence through incident management and process improvement.

Skills

Python

Linux

SQL

Monitoring Tools

Tools

Ansible

Geneos

Grafana

Splunk

Postgres

Sybase

Oracle

Job description

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

Client:

Location:

London, United Kingdom

Job Category:

Other

EU work permit required:

Yes

Job Views:

6

Posted:

16.06.2025

Expiry Date:

31.07.2025

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.