—
Senior React Developer - £120,000 - £140,000 – On-site (Central London) Overview We are hiring a Senior React Engineer to join a high-performance technology team within a leading financial services organisation operating in the oil and energy derivatives space. The business runs a cutting-edge electronic trading platform that serves both internal trading teams and external clients, offering low-latency, highly reliable trading access via a modern UI. We are looking for a self-starter who takes ownership of technical challenges and delivers robust solutions, with the ability to work under pressure in a fast-moving trading environment. You must also be a collaborative team player who communicates clearly and contributes to a high-quality engineering culture. Role & Responsibilities • Design, build, and maintain a React/TypeScript trading UI, delivering real-time streaming data and a seamless user experience • Integrate the UI with RESTful and streaming APIs (built in Rust and Python) • Own performance improvements across dashboards, widgets, and live data visualisation • Collaborate with QA and DevOps to enhance automated testing and deployment pipelines • Lead efforts in securing, scaling, and monitoring the frontend environment • Use observability tools (Prometheus, Grafana, Loki) to monitor UI health and performance • Drive UI architectural decisions, performance benchmarking, and best practice implementation Essential Skills and Experience • 5+ years of experience in frontend/UI engineering, with a focus on performance and scale • Deep expertise in React, TypeScript, and JavaScript • Strong understanding of WebSocket integration, low-latency data streaming, and threading • Experience troubleshooting data-heavy UIs and optimising load times • Familiarity with tools like Redis, Kafka, and cloud platforms such as Azure or AWS • Proficient in Git and modern source control workflows • Knowledge of performance diagnostics (e.g. Google PageSpeed Insights) and responsive UI optimisation Package: • Up to £140,000 (dependent on level of experience) • Up to 20% bonus • Excellent corporate benefits • On-site (Central London)
| Skill | Source | Confidence |
|---|---|---|
| JavaScript | llm_hard |
100%
|
| React | llm_hard |
100%
|
| Git | llm_hard |
100%
|
| RESTful APIs | llm_hard |
100%
|
| Azure (Microsoft) | llm_hard |
80%
|
| Responsive Web Design | llm_hard |
80%
|
| Google PageSpeed Insights | llm_hard |
80%
|
| AWS (Amazon Web Services) | llm_hard |
80%
|
| Skill | Source | Confidence |
|---|---|---|
| Initiative | llm_soft |
100%
|
| Team Player Attitude | llm_soft |
100%
|
| Problem-Solving | llm_soft |
100%
|
| Self-Motivation | llm_soft |
100%
|
| Verbal Communication | llm_soft |
100%
|
| Collaboration | llm_soft |
100%
|
| Written Communication | llm_soft |
80%
|
| Clarity of Speech and Writing | llm_soft |
80%
|
| Decision-Making | llm_soft |
80%
|
| Adaptability | llm_soft |
80%
|
| Query | Country | Status | Response ms | Created |
|---|---|---|---|---|
| Senior React Developer | extracted | 4918 | 2026-03-21 22:53 | |
| Senior React Developer | classified | 543 | 2026-03-21 18:50 | |
| junior programmer in United Kingdom | gb | duplicate | 16810 | 2026-03-21 17:48 |
| graduate web developer in United Kingdom | gb | duplicate | 20448 | 2026-03-21 16:02 |
| junior frontend engineer in United Kingdom | gb | duplicate | 11724 | 2026-03-21 15:25 |
| junior web developer in United Kingdom | gb | processed | 13421 | 2026-03-21 15:18 |
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"job_description": "Senior React Developer - £120,000 - £140,000 – On-site (Central London)\n\nOverview\n\nWe are hiring a Senior React Engineer to join a high-performance technology team within a leading financial services organisation operating in the oil and energy derivatives space. The business runs a cutting-edge electronic trading platform that serves both internal trading teams and external clients, offering low-latency, highly reliable trading access via a modern UI.\n\nWe are looking for a self-starter who takes ownership of technical challenges and delivers robust solutions, with the ability to work under pressure in a fast-moving trading environment. You must also be a collaborative team player who communicates clearly and contributes to a high-quality engineering culture.\n\nRole & Responsibilities\n• Design, build, and maintain a React/TypeScript trading UI, delivering real-time streaming data and a seamless user experience\n• Integrate the UI with RESTful and streaming APIs (built in Rust and Python)\n• Own performance improvements across dashboards, widgets, and live data visualisation\n• Collaborate with QA and DevOps to enhance automated testing and deployment pipelines\n• Lead efforts in securing, scaling, and monitoring the frontend environment\n• Use observability tools (Prometheus, Grafana, Loki) to monitor UI health and performance\n• Drive UI architectural decisions, performance benchmarking, and best practice implementation\n\nEssential Skills and Experience\n• 5+ years of experience in frontend/UI engineering, with a focus on performance and scale\n• Deep expertise in React, TypeScript, and JavaScript\n• Strong understanding of WebSocket integration, low-latency data streaming, and threading\n• Experience troubleshooting data-heavy UIs and optimising load times\n• Familiarity with tools like Redis, Kafka, and cloud platforms such as Azure or AWS\n• Proficient in Git and modern source control workflows\n• Knowledge of performance diagnostics (e.g. Google PageSpeed Insights) and responsive UI optimisation\n\nPackage:\n• Up to £140,000 (dependent on level of experience)\n• Up to 20% bonus\n• Excellent corporate benefits\n• On-site (Central London)",
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