Senior Developer (City of London)

Senior React Developer

London, United Kingdom · Full-time

Description

A fast-growing investment technology platform is seeking a talented Senior React Developer to join its frontend development team. The successful candidate will work on a suite of web applications supporting trade execution, portfolio management, and risk analysis across private equity, private debt, and real estate investment strategies.

The frontend team collaborates closely with quantitative analysts, backend engineers, and platform teams to evolve the company’s core technology platform.

Key Responsibilities:

Deliver high-quality, tested features across core applications such as the order and risk management systems

Collaborate with cross-functional teams on end-to-end features

Mentor junior developers through code reviews and guidance

Enhance UX and maintain consistent design principles across the platform

Participate in Agile ceremonies including stand-ups, backlog refinement, and retrospectives

Evaluate and improve the frontend architecture, including state management and API integrations

Help implement real-time frontend/backend communication using WebSockets

Extend and optimise the use of Nx for a frontend monorepo setup

Leverage Zustand and TanStack Query for state/data handling, and React Router for navigation

Work on real-time data visualisation, such as interactive market data graphs using HighCharts

Improve spreadsheet-like data displays using HandsOnTable for better performance and usability

Requirements:

Strong TypeScript and React skills

Experience with state management libraries (e.g., Zustand)

Proficiency in writing clean, testable code with solid test coverage

Experience with testing frameworks such as Vitest and Playwright

Familiarity with REST or GraphQL API design

Ability to write high-quality CSS

Independent ownership of deliverables and strong communication skills in a collaborative environment

Preferred Qualifications:

Experience working on financial risk management software or related platforms

Compensation & Benefits:

Competitive salary with eligibility for annual bonus

Enhanced health insurance with dental, optical, and mental health coverage

Financial support for continued professional development and qualifications

Pension scheme