Front End Developer – UI (React/TypeScript)
Our embedded engineering teams work alongside client technology organisations, delivering modern software across electronic trading, capital markets and enterprise platforms.
We're looking for talented Front End Engineers to join our London embedded engineering team. You'll be working with a Tier 1 investment bank, helping modernise a suite of electronic trading applications by replacing legacy Angular and desktop technologies with high-performance React applications used by traders around the world.
This is an opportunity to work on technically demanding software where milliseconds matter. You'll build responsive, low-latency trading interfaces, consume live market data, optimise browser performance for high-volume streaming applications and help shape the next generation of front-office trading technology.
The Role
As a Front End Engineer, you'll build mission-critical trading applications that process and visualise real-time market data for front-office users. Working as part of a collaborative engineering team, you'll help deliver modern React applications while contributing to shared engineering standards, reusable UI components and platform tooling.
The work combines modern front-end engineering with distributed systems, messaging technologies and performance optimisation, making it ideal for engineers who enjoy solving complex technical challenges.
Essential functions
Responsibilities
Design, develop and maintain high-performance React and TypeScript applications.
Build responsive user interfaces supporting pricing, execution and post-trade workflows.
Consume and process real-time market data using WebSockets, RSocket and messaging technologies.
Optimise browser rendering, memory usage and application performance for large streaming datasets.
Develop reusable UI components and shared application frameworks.
Migrate legacy Angular and AngularJS applications onto modern React architecture.
Collaborate closely with backend Java engineers to deliver end-to-end solutions.
Build automated UI testing using Playwright, Cypress or similar frameworks.
Contribute to architecture, code reviews and engineering best practices.
Deploy applications through modern CI/CD pipelines into containerised production environments.
Qualifications
Essential Skills
Strong commercial experience with React and TypeScript.
Experience delivering complex production front-end applications.
Excellent understanding of browser rendering, performance profiling, memory management and optimisation.
Experience consuming real-time streaming data using WebSockets, RSocket or similar technologies.
Strong understanding of asynchronous programming and responsive UI design.
Comfortable understanding backend Java services and collaborating across the full technology stack.
Experience with automated testing frameworks including Playwright, Cypress or Selenium.
Excellent software engineering fundamentals and Agile development experience.
Technology Stack
Front End
React
TypeScript
ag-Grid
HTML5
CSS3
Modern JavaScript
Real-Time Technologies
WebSockets
RSocket
Solace
Simple Binary Encoding (SBE)
Streaming Market Data
Backend
Java
Spring Boot
REST APIs
Microservices
DevOps & Platform
OpenShift
Tekton
CI/CD Pipelines
Containers
Testing
Playwright
Cypress
Selenium
AI Development
GitHub Copilot (including Agent Mode)
Modern AI-assisted engineering tools
Would be a plus
Desirable Skills
Experience migrating Angular or AngularJS applications to React.
Experience with Solace, Kafka, Tibco EMS, Aeron or similar messaging technologies.
Knowledge of binary messaging formats including SBE, FlatBuffers or Protocol Buffers.
Experience working with ag-Grid or enterprise-scale data grid frameworks.
Financial Markets or Electronic Trading experience, particularly FX.
Experience with RFQ, RFS, Order Management or Single Dealer Platforms.
Knowledge of Kubernetes, OpenShift and containerised deployments.
We offer
- Opportunity to work on bleeding-edge projects
- Work with a highly motivated and dedicated team
- Competitive salary
- Flexible schedule
- Benefits package - medical insurance, sports
- Corporate social events
- Professional development opportunities
- Well-equipped office
About us
Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & DevOps, application modernization and customer experience. Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.Apply to the position
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Grid Dynamics is an equal opportunity employer. We are committed to creating an inclusive environment for all employees during their employment and for all candidates during the application process.
All qualified applicants will receive consideration for employment without regard to, and will not be discriminated against based on, age, race, gender, color, religion, national origin, sexual orientation, gender identity, veteran status, disability or any other protected category. All employment is decided on the basis of qualifications, merit, and business need.