Front-End Developer – React or Angular (Front Office & Risk Systems)Margo-Group

You will work within Front Office and Risk technology environments, contributing to the design and evolution of modern web-based user interfaces.

These platforms typically support:

·        real-time trading and monitoring workflows

·        risk and P&L visualisation

·        analytics and control dashboards

·        operational and decision-support tools

The role requires strong ownership of UI architecture, performance and code quality, with close interaction with backend, production and business teams.

We are looking for a Front-End Developer with deep expertise in either React or Angular to work on complex Front Office and Risk UI platforms.

Candidates are expected to be experts in one of the two frameworks.

We are not looking for profiles with superficial exposure to both.

The role is hands-on, engineering-driven and focused on building scalable, real-time and maintainable front-end applications operating under production and performance constraints.

·        Own UI architecture, component design and state management

·        Build data-intensive and real-time user interfaces

·        Ensure scalability, maintainability and long-term evolvability of UI platforms

·        Apply best practices around clean code, refactoring and testing

·        Manage high-frequency UI updates and rendering efficiency

·        Optimise performance under real-time constraints

·        Control latency perception, responsiveness and user experience

·        Work with event-driven and streaming data sources

·        Collaborate with production, infrastructure and QA teams

·        Translate business and user needs into robust UI solutions

·        Act as a technical reference on front-end topics within the team

·        Participate in code reviews and architectural discussions

·        Contribute to continuous improvement of front-end practices and tooling

·        Support mentoring and knowledge sharing while remaining hands-on

·        TypeScript and modern JavaScript

·        State management (Redux, NgRx or equivalent)

·        HTML5, CSS3 and modern styling approaches

·        Component-based architecture and modular design

·        High-frequency UI updates and data refresh mechanisms

·        Performance optimisation under real-time constraints

·        Management of rendering efficiency, responsiveness and latency perception

·        Interaction with event-driven and streaming data sources

·        Data grids and complex visual components

·        Performance profiling and optimisation techniques

·        Modern build tools and frameworks (Vite, Webpack or equivalent)

·        Unit and integration testing frameworks

·        Authentication and authorisation mechanisms (SSO, JWT, OAuth or similar)

·        CI/CD pipelines and version control systems

·        Interaction with backend systems and databases

·        Expert-level proficiency in either React or Angular

·        Solid understanding of front-end architecture and design patterns

·        Experience building scalable and maintainable UI platforms

·        Strong attention to performance and user experience

·        Ability to work in demanding Front Office or Risk environments

·        Excellent communication and collaboration skills

·        Experience working on data-intensive or analytical UIs

·        Familiarity with real-time communication patterns

·        Mentoring or technical leadership experience

·        Access to complex Front Office and Risk UI platforms

·        Strong emphasis on engineering quality and clean front-end architecture

·        Real-time, performance-sensitive UI challenges

·        Human-sized consultancy with close support and long-term focus

·        Long-term career opportunities across engineering and architecture