Application Support Engineer
Posted Today by Harrington Starr
£575 Per day
Inside
Hybrid
London Area, United Kingdom
Summary: The Application Support Engineer role focuses on enhancing trading and post-trade systems within a fintech environment in London. This position emphasizes automation, system stability, and performance, requiring collaboration with traders and vendors. The role offers a blend of support and engineering responsibilities, with potential for long-term extension or permanent conversion. Candidates should possess strong scripting skills and experience in financial services.
Key Responsibilities:
- Own stability and performance of production trading and post-trade systems
- Drive automation across support processes (PowerShell / Python)
- Troubleshoot complex issues across Windows, SQL, and integrated applications
- Work closely with traders, ops, and vendors to resolve and prevent issues
- Improve post-trade workflows, reconciliation, and data processing pipelines
- Influence system improvements and future platform direction
- Engage with vendor platforms (e.g. TT, ATEO or similar post-trade/reconciliation solutions)
Key Skills:
- Strong PowerShell and/or Python scripting capability
- Experience in trading / financial services environments
- Solid Windows and SQL background
- Exposure to post-trade or reconciliation platforms - Preferably Trading Technologies ATEO system or similar such as Duco, SmartStream, etc.
- Proven track record of automating and improving support functions
- Comfortable in high-pressure, front-office-aligned environments
- Interest or exposure to AI / LLM tooling (bonus)
Salary (Rate): £575 daily
City: London
Country: United Kingdom
Working Arrangements: hybrid
IR35 Status: inside IR35
Seniority Level: undetermined
Industry: IT
Application Support Engineer – Trading Systems (Fintech) £500–£575/day Inside IR35 6-Month Contract - Hybrid (London – 3 days) - With the option to convert to perm. You'll be working in a front-office trading environment in Central London. The business is scaling its support and engineering capability across critical trading and post-trade systems. They are investing heavily in automation, resilience, and next-gen tooling (including AI/LLMs), creating a role that sits beyond traditional support — closer to engineering, optimisation, and platform ownership. This hire is driven by growth, system complexity, and the need to modernise workflows across both execution and post-trade operations. Strong likelihood of long-term extension or permanent conversion.
The Role This is a high-impact support & engineering role within a live trading and post-trade ecosystem:
- Own stability and performance of production trading and post-trade systems
- Drive automation across support processes (PowerShell / Python)
- Troubleshoot complex issues across Windows, SQL, and integrated applications
- Work closely with traders, ops, and vendors to resolve and prevent issues
- Improve post-trade workflows, reconciliation, and data processing pipelines
- Influence system improvements and future platform direction
- Engage with vendor platforms (e.g. TT, ATEO or similar post-trade/reconciliation solutions)
What We’re Looking For
- Strong PowerShell and/or Python scripting capability
- Experience in trading / financial services environments
- Solid Windows and SQL background
- Exposure to post-trade or reconciliation platforms - Preferably Trading Technologies ATEO system or similar such as Duco, SmartStream, etc.
- Proven track record of automating and improving support functions
- Comfortable in high-pressure, front-office-aligned environments
- Interest or exposure to AI / LLM tooling (bonus)
Why This Role
- Direct impact across trading and post-trade operations
- Blend of support, automation, and engineering ownership
- Exposure to AI-driven initiatives and modernisation work
- Clear path to long-term role in a growing platform environment
To apply – click the link or email Barry.Ansell@HarringtonStarr.com for a faster response