Senior Frontend Engineer - Hybrid, Cross-Platform (React)

Arcus Search; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Hybrid work (London)

Small engineering team

Autonomy

Job summary

Arcus Search is seeking a Senior Frontend Engineer to own and evolve a production React application across web and mobile platforms. You will collaborate closely with backend and ML engineers, shape the frontend architecture, and drive the release process for web and mobile apps.

Ideal candidates bring strong React, JavaScript, and TypeScript skills, with a track record of taking ownership of production apps and delivering robust, scalable frontend solutions in a cross-platform environment.

Qualifications

• Strong commercial experience with React.
• Excellent JavaScript and TypeScript skills.
• Experience taking ownership of existing production applications.
• Cross-platform development experience across web and mobile.
• CI/CD pipeline ownership and production deployment experience.
• Comfortable making architectural decisions independently.
• Experience integrating frontend applications with REST APIs.
• Ability to troubleshoot production issues and deliver solutions quickly.

Responsibilities

• Take ownership of an existing production React application.
• Drive frontend development across web, iOS and Android.
• Analyse and understand an inherited codebase with limited historical knowledge.
• Define the long-term frontend architecture and technical roadmap.
• Deliver new features while improving maintainability and performance.
• Build and manage CI/CD pipelines.
• Own deployments to production, including web and mobile app releases.
• Improve monitoring, observability and production reliability.
• Integrate frontend applications with Python/FastAPI backend services.
• Work independently while collaborating closely with a small engineering team.

Skills

React

JavaScript

TypeScript

Cross-platform

CI/CD

REST APIs

Production ownership

Tools

Python

FastAPI

Job description

Arcus Search is seeking a Senior Frontend Engineer to own and evolve a production React application across web and mobile platforms. You will collaborate closely with backend and ML engineers, shape the frontend architecture, and drive the release process for web and mobile apps.

Ideal candidates bring strong React, JavaScript, and TypeScript skills, with a track record of taking ownership of production apps and delivering robust, scalable frontend solutions in a cross-platform environment.