Senior Application Support Engineer – Elite Systematic Trading Firm - Prop Trading - Up to £400[...]

Mondrian Alpha; London; On-site; GBP 35,000 - 40,000; Full time

Job summary

An elite systematic trading firm in London seeks a Senior Application Support Engineer. This role focuses on providing critical support for low-latency trading systems, automating processes, and collaborating with traders and engineers in an innovative environment. Opportunities for professional growth and competitive compensation are offered to suitable candidates.

Benefits

Comprehensive health coverage

Daily meals

Pension contributions

Professional development opportunities

Qualifications

• 5+ years' experience in trading systems support, preferably in Linux.
• Strong knowledge of trade lifecycle in various asset classes.
• Proficiency in FIX protocol and using relational databases.

Responsibilities

• Deliver L1/L2 support for trading applications globally.
• Automate support functions using Python and SQL.
• Collaborate with traders and developers to troubleshoot issues.

Skills

Scripting for automation

Communication

Problem Solving

Education

Bachelor's degree or equivalent in relevant field

Tools

Python

SQL

Splunk

Grafana

Job description

Senior Application Support Engineer – Elite Systematic Trading Firm - Prop Trading - Up to £400k TC - WFH

Senior Application Support Engineer – Elite Systematic Trading Firm - Prop Trading - Up to £400k TC - WFH

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Direct message the job poster from Mondrian Alpha

Senior Application Support Engineer – Elite Systematic Trading Firm - Prop Trading - Up to £400k 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 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.

Why Apply?

• Compensation: Highly competitive base salary and performance-based bonus—well above industry benchmarks.
• Career Trajectory: Accelerated progression into senior and team-lead roles.
• Technology Focus: Full exposure to advanced trading tech, hardware-accelerated infrastructure (e.g., FPGA), and bleeding-edge automation.
• Benefits: Comprehensive health coverage, daily meals, pension contributions, and professional development.
• Culture: Join a collaborative and intellectually rigorous environment where engineers directly impact business outcomes.

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

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Finance, Engineering, and Information Technology

• Industries

  Financial Services, Software Development, and IT Services and IT Consulting

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