Senior Front-End Engineer – React & TypeScript

Insightful Technology; Greater London; On-site; GBP 70,000 - 100,000; Full time

Job summary

Insightful Technology in London is seeking an experienced developer to design, implement and improve enterprise web applications. You will own features end-to-end, from user research and technical design through testing and deployment, working with React, TypeScript and .NET on complex data-driven dashboards.

The role emphasizes strong architectural judgment, performance, accessibility and collaboration with product, design and engineering teams.

Qualifications

• 5+ years of relevant commercial software development experience.
• Senior level: strong architectural judgement and end-to-end ownership preferred.

Responsibilities

• Design, develop and maintain modern web applications using React and TypeScript.
• Own front-end features from requirements to testing and release.
• Translate complex workflows into clear user experiences.
• Build reusable, well-documented components.
• Integrate front-end with REST APIs and .NET services.
• Mentor junior developers and contribute to coding standards.

Skills

C#

.NET

Microsoft SQL Server

React

TypeScript

HTML5

CSS

REST API

Front-end performance

Testing

Git

Education

Bachelor's degree or equivalent

Tools

Material UI

Entity Framework

Highcharts

Vite

Jest

IIS

Octopus Deploy

TeamCity

Job description

Insightful Technology in London is seeking an experienced developer to design, implement and improve enterprise web applications. You will own features end-to-end, from user research and technical design through testing and deployment, working with React, TypeScript and .NET on complex data-driven dashboards.

The role emphasizes strong architectural judgment, performance, accessibility and collaboration with product, design and engineering teams.