Senior Frontend Developer @ Link Group

We are looking for a Senior Frontend Developer with strong experience in React and TypeScript , building real-time, event-driven single-page applications (SPA) for a global financial platform.

The platform supports Sales and Trading teams across multiple asset classes (FX Options, Interest Rate Derivatives, Commodities, Credit Derivatives), providing real-time pricing, risk, and trade booking capabilities.

As part of this role, you will work with a custom React framework ensuring UI consistency , integrating closely with backend services, and optimizing performance-sensitive interfaces that update dynamically via WebSockets and RxJS observables .

Why This Role Is Unique

• Work on a strategic, real-time financial platform with global impact
• Build high-performance, event-driven frontends used by traders and sales teams
• Collaborate with an international team (Warsaw, London, Singapore)
• Engage in complex, intellectually challenging projects in a strong engineering culture
• Opportunity to influence architecture, design patterns, and performance optimization across the platform
• 7+ years of experience in frontend development
• Strong hands-on experience with React (Hooks) , TypeScript , RxJS , WebSockets , Webpack , and building SPA applications
• Practical experience with real-time UI communication , observables, and performance optimization
• Solid understanding of software design patterns and frontend best practices
• Ability to write clean, maintainable code and collaborate effectively with backend teams
• Fluent in English (spoken and written)

Nice to Have

We are looking for a Senior Frontend Developer with strong experience in React and TypeScript , building real-time, event-driven single-page applications (SPA) for a global financial platform.

The platform supports Sales and Trading teams across multiple asset classes (FX Options, Interest Rate Derivatives, Commodities, Credit Derivatives), providing real-time pricing, risk, and trade booking capabilities.

As part of this role, you will work with a custom React framework ensuring UI consistency , integrating closely with backend services, and optimizing performance-sensitive interfaces that update dynamically via WebSockets and RxJS observables .

Why This Role Is Unique

,[Build and maintain React + TypeScript SPAs with a focus on real-time data updates , Implement observables and reactive UI patterns using RxJS  , Integrate frontend with backend services through WebSockets, REST APIs, and event-driven messaging , Optimize performance and maintain high-quality, clean, and testable code , Participate in all stages of the software development lifecycle, from requirements to production support , Mentor junior developers and collaborate with global teams on technical design and feature delivery , Ensure adherence to coding standards and best practices across the UI stack , Contribute to unit tests and CI / CD pipelines (Azure DevOps) ] Requirements : React, TypeScript, UI, RxJS, REST API, CI / CD Pipelines, DevOps, Webpack, Design Patterns, Redux, Unit testing, Testing, Java, Docker, Nginx, Yarn, Prometheus, ELK Stack