Senior Front-end Engineer - React/TS for Analysis Platform

NIF; Greater London; Hybrid; GBP 70,000 - 100,000; Full time

Job summary

Portal Biotech is seeking a Senior Front-end Software Engineer to join the Analysis Platform team. You’ll build the UI scientists use to launch analyses, follow runs and interact with reports from our analysis pipeline.

The role focuses on the launch/run/results interface, reusable React components, and API integration. London-based preference with remote UK overlap for a 6-month contract starting October 2026.

Qualifications

• 6+ years of frontend development experience from concept to production
• Deep React and TypeScript expertise with production-grade web applications
• Experience with modern testing frameworks (Vitest, Playwright) and end-to-end testing
• Ability to own outcomes, make decisions, and push work to completion in a fast-moving environment
• Strong collaboration with backend engineers, domain experts, and product leads

Responsibilities

• Build the launch, run and results interface for analyses used by internal teams and external users
• Design report layouts and interactions
• Create reusable React components that assemble pipeline launch forms from our API
• Integrate with and influence backend APIs; align with backend teams
• Support deployment and knowledge-sharing with DevOps for smoother releases

Skills

React

TypeScript

End-to-end testing

Vitest

Playwright

Frontend ownership

Collaboration

Job description

Portal Biotech is seeking a Senior Front-end Software Engineer to join the Analysis Platform team. You’ll build the UI scientists use to launch analyses, follow runs and interact with reports from our analysis pipeline.

The role focuses on the launch/run/results interface, reusable React components, and API integration. London-based preference with remote UK overlap for a 6-month contract starting October 2026.