At a Glance
- Tasks: Support a low-latency Cash Equities trading platform and troubleshoot incidents.
- Company: Leading global investment bank in London with a high-performing team.
- Benefits: Gain exposure to high-frequency trading systems and global markets.
- Other info: Dynamic environment with opportunities for professional growth and learning.
- Why this job: Work directly with traders and quants, making a real impact in finance.
- Qualifications: Experience in trading systems, Unix/Linux, and scripting languages required.
The predicted salary is between 60000 - 80000 £ per year.
We are seeking an experienced Application Support Engineer (AVP level) to join a high-performing Application Production Support (APS) team within a leading global investment bank in London. You will play a critical role supporting a low-latency Cash Equities trading platform, working directly alongside front office traders, quants, and developers to ensure stability, performance, and continuous improvement of a mission‑critical execution environment. This is an excellent opportunity to gain exposure to high-frequency trading systems, global markets, and cutting‑edge real‑time technologies in a fast‑paced environment.
Key Responsibilities
- Provide hands‑on Level 1/2/3 support for the Cash Equities Execution platform
- Sit directly with High Touch and Low Touch trading desks, supporting real‑time trading activity
- Monitor system health, performance, and trading flows across global markets
- Develop and enhance monitoring, alerting, and observability frameworks
- Troubleshoot incidents, perform root cause analysis, and deliver timely resolution
- Own and manage incident lifecycle, including detailed post‑incident reporting
- Collaborate closely with Front Office developers, quants, and BA teams
- Support production releases and deployments, ensuring minimal disruption
- Automate manual processes using scripting to improve efficiency and reliability
- Maintain and improve operational documentation (runbooks, procedures, tools)
- Participate in on‑call and weekend rotations as part of a global support model
Required Skills & Experience
- Strong experience supporting trading systems or low‑latency platforms
- Solid expertise in Unix/Linux environments and system‑level troubleshooting
- Proficient in at least one scripting/programming language (e.g. Python, Bash, Go)
- Experience with monitoring & observability tools (e.g. Dynatrace, Prometheus, Grafana)
- Strong understanding of networking fundamentals (TCP/IP, DNS, latency, etc.)
- Proven ability to troubleshoot complex, distributed systems under pressure
- Experience working in production support / SRE / APS environments
- Exposure to electronic trading, equities, or financial markets
- Experience with log management tools (Splunk, OpenSearch)
- Knowledge of messaging systems (Kafka, Tibco, Solace)
- Familiarity with databases (Oracle, PostgreSQL, MySQL, KDB/q)
- Experience with network monitoring tools (e.g. Corvil)
- Background in high‑availability, high‑throughput environments
Personal Profile
- Strong client focus and ability to interact with front office stakeholders
- Excellent problem‑solving and analytical mindset
- Highly organised and detail‑oriented
- Proactive, self‑motivated, and able to work under pressure
- Strong communicator - able to clearly explain technical issues
- Team player with flexibility to adapt in fast‑moving environments
Why Join?
- Work directly with front office trading desks and quants
- Exposure to cutting‑edge trading systems and high‑frequency environments
- Opportunity to be part of a globally distributed APS/SRE team
- Gain deep insight into financial markets and execution platforms
Application Support Engineer (Cash Equities) employer: Lorien
Join a leading global investment bank in London as an Application Support Engineer, where you will thrive in a dynamic work culture that prioritises innovation and collaboration. With direct exposure to front office trading desks and cutting-edge technologies, you will have ample opportunities for professional growth and development in the fast-paced world of high-frequency trading. Enjoy a supportive environment that values your contributions and fosters a strong sense of teamwork, making it an excellent place for meaningful and rewarding employment.
