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Senior React Developer
Job in
Greater London, London, Greater London, W1B, England, UK
Listed on 2026-02-28
Listing for:
TopTek Talent
Full Time
position Listed on 2026-02-28
Job specializations:
-
Software Development
Software Engineer
Job Description & How to Apply Below
Are you a seasoned Frontend Engineer who thrives on building high-performance systems for the global financial markets? We are looking for a Senior React Developer to lead a front-end transformation for a global leader in financial infrastructure.
In this role, you will be responsible for rewriting and refactoring mission-critical UI applications—including Margin and Collateral Managers—integrating them into a unified, strategic workspace platform.
The Opportunity- Location: London, UK (Hybrid)
- Duration: 9–12 Months (likely extension)
- The Mission: Build a high-performance web interface for post-trade services, ensuring systemic resiliency and seamless integration with distributed microservices.
- Modernize Infrastructure: Rewrite existing UI applications using strategic workspace components to create a unified portal with a common look and feel.
- Architect for Scale: Design frontends that interact with scalable distributed APIs in an AWS environment.
- Uphold Excellence: Champion clean code and SOLID principles while meeting rigorous "quality gates" for systems handling up to 50 million messages per second.
- Collaborate: Partner closely with Java backend teams to ensure seamless interaction across the financial data ecosystem.
- Experience: 8+ years of software engineering experience.
- Technical Mastery: Expert-level proficiency in ReactJS and Type Script .
- Architecture: Proven ability to design frontends for scalable, distributed microservices.
- Domain Knowledge (Bonus): Understanding of collateral management for bilateral and cleared OTC derivatives is highly beneficial.
Position Requirements
10+ Years
work experience
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