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- Tasks: Design and develop high-performance front-end applications using React or Angular.
- Company: Join MARGO, a tech-native consultancy in the heart of London.
- Benefits: Enjoy a supportive environment with long-term career opportunities and engineering quality focus.
- Why this job: Tackle real-time UI challenges and make an impact in financial services.
- Qualifications: Expertise in either React or Angular and strong web application experience required.
- Other info: Collaborate closely with teams and contribute to innovative UI solutions.
The predicted salary is between 36000 - 60000 £ per year.
Join MARGO in the UK (London) – Permanent & Contracting Opportunity. MARGO is a tech-native consultancy delivering high value-added IT expertise to the financial services industry. We operate in complex Front Office and Risk environments where user interfaces are critical components of trading, risk and decision-making systems. Our consultants design and build high-performance, real-time and maintainable UI platforms used daily by Front Office, Risk and technology teams.
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. 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.
Key Responsibilities
- Design and develop high-performance front-end applications using React or Angular
- 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
Real-Time & Performance Considerations
- Develop UIs consuming real-time or near real-time data streams
- 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
Collaboration & Integration
- Work closely with backend teams to define and consume APIs
- 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
Quality & Engineering Standards
- Enforce high standards for code quality, testing and documentation
- 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
Technical Environment
- Core Front-End Technologies: React OR Angular (expert level – one is mandatory), TypeScript and modern JavaScript, State management (Redux, NgRx or equivalent), HTML5, CSS3 and modern styling approaches, Component-based architecture and modular design
Real-Time & Performance Constraints
- User interfaces consuming real-time or near real-time data
- 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
Valued Front-End Exposure
- Real-time UI patterns (WebSockets, streaming APIs or equivalent)
- 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
Supporting Technologies (Context)
- API-driven architectures
- Authentication and authorisation mechanisms (SSO, JWT, OAuth or similar)
- CI/CD pipelines and version control systems
- Interaction with backend systems and databases
Required Experience & Skills
- Strong experience as a Front-End Developer on complex web applications
- 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
Valued (but not restrictive)
- Exposure to Front Office, Risk or real-time systems
- Experience working on data-intensive or analytical UIs
- Familiarity with real-time communication patterns
- Mentoring or technical leadership experience
Why Join MARGO
- 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
Interested? Motivated? Apply on our website or at staff.uk@margo.com
Front-End Developer – React or Angular (Front Office & Risk Systems) in London employer: Margo
Contact Detail:
Margo Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Front-End Developer – React or Angular (Front Office & Risk Systems) in London
✨Tip Number 1
Get your networking game on! Connect with folks in the industry, especially those at MARGO. Attend meetups or online events where you can chat about front-end development and show off your React or Angular skills.
✨Tip Number 2
Showcase your work! Create a portfolio that highlights your best projects using React or Angular. Make sure to include real-time applications or any complex UI platforms you've built – this will grab attention!
✨Tip Number 3
Prepare for technical interviews by brushing up on your coding skills. Practice common front-end challenges and be ready to discuss your approach to performance optimisation and UI architecture.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to get noticed. Tailor your application to highlight your expertise in either React or Angular and how you can contribute to MARGO's exciting projects.
We think you need these skills to ace Front-End Developer – React or Angular (Front Office & Risk Systems) in London
Some tips for your application 🫡
Show Off Your Skills: Make sure to highlight your expertise in either React or Angular. We want to see your hands-on experience and how you've tackled complex web applications. Don't hold back on showcasing your best projects!
Tailor Your Application: Customise your CV and cover letter to reflect the specific requirements of the Front-End Developer role. Mention your understanding of front-end architecture and performance optimisation, as these are key for us at MARGO.
Be Clear and Concise: When writing your application, keep it straightforward and to the point. We appreciate clarity, so make sure your experience and skills shine through without unnecessary fluff.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it shows you're keen on joining our team!
How to prepare for a job interview at Margo
✨Master the Framework
Make sure you have a deep understanding of either React or Angular, as this is crucial for the role. Prepare to discuss your past projects in detail, focusing on how you implemented complex features and optimised performance.
✨Showcase Your Problem-Solving Skills
Be ready to tackle real-time data challenges during the interview. Think about examples where you've managed high-frequency UI updates or improved rendering efficiency, and be prepared to explain your thought process.
✨Communicate Effectively
Since collaboration with backend teams and other departments is key, practice articulating your ideas clearly. Use examples from your experience to demonstrate how you’ve successfully worked with cross-functional teams.
✨Emphasise Quality and Best Practices
Highlight your commitment to code quality, testing, and documentation. Be prepared to discuss your approach to code reviews and how you ensure maintainability and scalability in your projects.
