Senior React Developer at Intec Select

Job Description:

Latest job information from Intec Select for the position of Senior React Developer. If the Senior React Developer vacancy in United Kingdom matches your qualifications, please submit your latest application or CV directly through the updated Jobkos job portal.

Please note that applying for a job may not always be easy, as new candidates must meet certain qualifications and requirements set by the company. We hope the career opportunity at Intec Select for the position of Senior React Developer below matches your qualifications.

Senior React Engineer - £700 - £800 p/day – 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

• Degree in Computer Science, Engineering, or a related field
• 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

Desirable Skills and Experience

• Experience deploying apps to the Apple App Store
• Knowledge of web security best practices and cyber threat mitigation
• Familiarity with microservices and REST API architecture
• Exposure to Infrastructure as Code tools (e.g. Terraform)
• Experience working with real-time trading or data visualisation platforms

Package:

• Initial 12 month contract (high possibility of extension)
• Up to £800 p/day (dependent on level of experience)
• On-site (Central London)

Job Info:

• Company: Intec Select
• Position: Senior React Developer
• Work Location: United Kingdom
• Country: GB

How to Submit an Application:

After reading and understanding the criteria and minimum qualification requirements explained in the job information Senior React Developer at the office United Kingdom above, immediately complete the job application files such as a job application letter, CV, photocopy of diploma, transcript, and other supplements as explained above. Submit via the Next Page link below.