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Application Services Engineer - Trading - Low Latency
Job Posted: 27 minutes ago
Salary: £ 500 - 550 / Day
Job Type: Contract
Location: London
Expire in: a month
Job Description
Job Title: Application Services Engineer - Trading - Low Latency
Location: London - 3 days per week in the office
Salary/Rate: Up to £500 per day INSIDE IR35
Start Date: 18/10/2025
Job Type: Contract
Job Responsibilities/Objectives
You will be a member of the team that is responsible for the support and management of the of the infrastructure that supports the Bank's electronic business. Team members will work closely with core Infrastructure teams, development and the business responding to requests, fault reports, often being required to resolve issues quickly, under pressure and sometimes out of hours. In addition to business as usual activity there are a great number of infrastructure projects and tasks that must be completed.
Deliver and support low latency connectivity and monitoring solutions for the Global Markets business, aligned with front-office trading and regulatory needs.
Apply SRE principles to improve availability, latency, performance, and capacity planning across trading infrastructure.
Collaborate with network and platform engineers to design reliable, self-healing systems and reduce manual intervention through automation.
Own and execute the Global Markets connectivity roadmap, from project delivery through to operational handoff and lifecycle management.
Partner with business stakeholders and platform owners to ensure infrastructure and observability tooling meets evolving trading requirements.
Monitor and manage capacity and performance of global connectivity systems, working with regional teams to aggregate local intelligence.
Conduct deep-dive post-incident analysis and forensic reviews during high-impact market events (e.g., non-farm payroll), using packet analysis to identify systemic improvements.
Develop and maintain automated alerting, health checks, and dashboards, supporting proactive detection of issues and system degradation.
Lead lab-based testing and benchmarking initiatives for new connectivity solutions, ensuring readiness for production deployment.
Produce operational and performance KPIs, SLO/SLI metrics, and executive summaries to support senior decision-making.
Champion continuous improvement and innovation, driving technology adoption in monitoring, resiliency, and incident response tooling.Required Skills/Experience
The ideal candidate will have the following:
Strong background in low latency network engineering, including TCP/IP, multicast, traffic shaping, and performance analysis.
Proven experience with packet capture and analysis tools (Wireshark, tcpdump, Corvil/PICO); ability to build custom decoders is highly advantageous.
Familiarity with SRE tools and practices, including infrastructure as code (IaC), CI/CD pipelines, error budgets, and reliability-focused SLIs/SLOs.
Experience supporting real-time trading applications, including feed handlers, matching engines, and algo trading platforms.
Strong working knowledge of messaging middleware (Solace, 29West, Tibco, LBM, or equivalent) in performance-sensitive environments.
Proficient in scripting and automation using Python, Bash, or PowerShell to streamline monitoring, alerting, and recovery workflows.
Knowledge of FIX, market data, and order routing protocols in a trading environment.
Exposure to observability platforms such as ITRS Geneos, Prometheus, Grafana, or custom telemetry stacks.
Comfortable working across Linux systems, hybrid infrastructure, and global production environments.
Excellent communication and reporting skills, with ability to translate technical data into actionable business insights.If you are interested in this opportunity, please apply now with your updated CV in Microsoft Word/PDF format.
Disclaimer
Notwithstanding any guidelines given to level of experience sought, we will consider candidates from outside this range if they can demonstrate the necessary competencies.
Square One is acting as both an employment agency and an employment business, and is an equal opportunities recruitment business. Square One embraces diversity and will treat everyone equally. Please see our website for our full diversity statementBefore You Apply
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