Frontend Engineer - Trading Systems (FX) - Contract
Role Summary
Wagglyn is seeking a Frontend Engineer – Contractor to build and improve the user-facing layer of our FX trading platform.
This role focuses on developing real-time interfaces for monitoring, control, and diagnostics across trading, execution, and market data systems.
While not part of the core execution path, this role is important in improving visibility, operational effectiveness, and system understanding as we move into live trading.
You will work closely with the CTO and engineering team to deliver clear, reliable interfaces that accurately reflect real-time system behaviour.
Responsibilities
- Build and improve monitoring and control interfaces, including:
- Order and execution visibility
- Position and PnL dashboards
- System health and performance metrics
- Develop tools to support:
- Strategy control (e.g. start/stop, configuration updates)
- Debugging and investigation of trading behaviour
- Work with real-time data streams:
- Integrate frontend systems with backend services
- Ensure accurate and consistent representation of system state
- Improve operational visibility:
- Surface key system metrics and anomalies
- Make system behaviour easier to understand in real time
- Contribute to usability:
- Build clear, functional interfaces for internal users
- Prioritise clarity and correctness over visual complexity
- Improve UI performance and responsiveness:
- Handle frequent updates efficiently
- Ensure a smooth experience under load
Required Experience
- Strong experience building frontend applications using modern frameworks
- Proficiency in:
- TypeScript / JavaScript
- React (or similar frameworks)
- Experience working with:
- Real-time or near real-time data (e.g. WebSockets, streaming APIs)
- Data-heavy or dashboard-style applications
- Solid understanding of:
- State management in frontend systems
- Performance considerations in modern web applications
Technical Environment
- Frontend: TypeScript, React (Next.js)
- Data: Real-time streaming (WebSockets or equivalent)
- Backend Integration: APIs and event-driven systemsWhat Success Looks Like
Preferred Experience
- Experience with Next.js or similar frameworks
- Experience building:
- Internal tools or dashboards
- Monitoring or observability systems
- Familiarity with:
- Financial markets or real-time systems
What Success Looks Like
In the first 2–3 months, you will:
- Deliver core monitoring dashboards for trading activity and system state
- Improve visibility into orders, positions, and system performance
- Build tools that make it easier to operate and understand the trading platform in real time
Profile
- Strong engineer (typically 2–5 years’ experience) comfortable taking responsibility for key frontend components
- Able to operate effectively in a small, fast-moving team
- Pragmatic and delivery-focused:
- Builds tools that are clear, reliable, and useful
- Strong attention to detail:
- Understands the importance of accurate data representation
Contract Structure
· Full-time contractor
· Rolling fixed-term arrangement
· Immediate start preferred
About Wagglyn
Wagglyn is a bespoke FX consultancy mandated by a single-family office to develop and implement a systematic total return strategy in foreign exchange markets.
We are building an institutional-grade algorithmic FX trading capability, combining quantitative research and high-performance engineering.