---
title: 'Front-End Developer – React or Angular (Front Office & Risk Systems) at MARGO'
canonical: 'https://feeny.ai/job/front-end-developer-react-or-angular-front-office-risk-systems-margo-london-t0bd2yv09gfd'
type: 'job'
last_seen: '2026-09-07'
---

# Front-End Developer – React or Angular (Front Office & Risk Systems) at MARGO

- **Company:** MARGO
- **Location:** London, United Kingdom
- **Employment:** contract
- **Work type:** hybrid
- **Posted:** 2026-01-15
- **Last confirmed live:** 2026-09-07
- **Apply:** https://jobs.lever.co/margo-group/2eec9a1f-633d-44a6-989e-02e59f92f43a

## Job description

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

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.

Joining MARGO means working on technically demanding UI platforms, close to business users, while benefiting from a human-sized structure, strong engineering standards and tailored career paths.

Business Context

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.

## Role Overview

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.

## Key Responsibilities

Front-End Architecture & Development

- 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

Essential

- 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

## About MARGO

## Company Overview
- **One-liner**: MARGO is an international technology engineering and AI consulting group that transforms technological complexity into business performance for global leaders in finance, insurance, energy, manufacturing, and tech.
- **Entity Type**: Private (100% organically grown, no external funding disclosed)
- **Headquarters**: Paris, France (with offices in London and Warsaw)
- **Founded**: 2005
- **Founders**: Olivier Hemar and Xavier Lagarrigue

## Core Business
- **Primary industries**: Data, Cloud, and AI consulting; IT engineering services
- **Target customers**: B2B – large enterprises and global leaders in Finance, Insurance, Energy, Manufacturing, and Technology
- **Mission/purpose**: To solve highly complex IT challenges by combining engineering excellence with world-class partner solutions, transforming technological complexity into business performance and competitive advantage.

## Products & Services
- **Data, Cloud & AI Architecture Consulting**: Design and deployment of critical data, cloud, and AI architectures for high-stakes environments. Service type: Consulting & Engineering Services.
- **Hyper-specialized IT Consulting**: Focus on highly complex IT projects where the complexity of the mission correlates with its value. Service type: Consulting.

## Market Standing
- **Valuation/Market Cap**: Not publicly available (private company)
- **Key Metric**: €45M turnover in 2025 (annual revenue)
- **Notable Investors/Partners**: No external investors cited; company is 100% organically grown. Partners include global technology leaders (e.g., cloud and data platform providers).
- **Growth Signals**: 19+ consecutive years of growth; expanded from Paris to London and Warsaw with a team of 450; 34% of consultants from Tier 1 universities; certified Great Place to Work (Top 30 in France).

## Competitive Advantages
- **Hyper-specialization**: Focuses exclusively on highly complex IT projects, avoiding volume-driven commodity consulting.
- **Elite talent pool**: 34% of consultants from top-tier engineering schools (Polytechnique, CentraleSupélec, Télécom Paris, ENSIMAG) – 15% above market average.
- **Strong culture of excellence**: Peer-led EXCELLENCE Hub delivers 726 coaching sessions/year, 35 Learning Expeditions, one certified training per employee per year.
- **100% organic growth** since 2005, demonstrating a resilient and independent business model.

## Strategic Focus
- Continue organic growth by deepening relationships with key accounts in finance, insurance, and industry.
- Invest in the EXCELLENCE Hub to further develop technical skills and personal branding (e.g., speaking at Devoxx, ACCU, CppCon).
- Expand the hybrid work model that balances in-person collaboration (headquarters in La Défense, Paris) with remote flexibility.
- Maintain a selective project portfolio – prioritize quality and intellectual challenge over volume.

## Why Work Here
- **Culture**: Emphasizes excellence, exemplarity, and ambition. Peer-led acceleration with continuous learning (Learning Lunches, meetups, certifications). Encourages personal branding and thought leadership.
- **Work environment**: Hybrid approach – offices in La Défense (27th floor of Tour Aurore) with collaborative spaces, auditorium, rooftop terrace, and private gym. On-site presence is valued for social cohesion and innovation.
- **Perks**: Guaranteed certified training each year; sports communities (Running, Football, Yoga); participation in major events like Marathon de Paris. Great Place to Work certified (Top 30 in France with 83% employee approval).
- **Hiring process**: 3-step recruitment (Talent Acquisition + Business Developer, technical employee interview with logic exercises and algorithmic challenges, Head of Department final round). AI tools may be used in application review.

## Sources
1. [margo.com – Company overview](https://www.margo.com/en/accueil-english/)
2. [margo.com – Company Life](https://www.margo.com/en/company-life/)
3. [margo.com – DNA & History](https://www.margo.com/en/dna-margo-en/)
4. [margo.com – Recruitment process](https://www.margo.com/en/recruitment-process/)
5. [jobs.lever.co – MARGO careers page](https://jobs.lever.co/margo-group)

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