Senior Frontend Engineer - React/React Native (Hybrid London)

Zilch; City of Westminster; On-site; GBP 85,000 - 110,000; Full time

Job summary

Zilch is seeking an FE Software Engineer IV to drive the mobile experience across iOS and Android using React Native. You will craft high‑quality code, lead technical design, and focus on performance, security, and reliability.

With 6+ years in software, you will champion best practices, collaborate with backend teams, and push for improvements in testing, deployment, and developer experience. London-based, on-site 3 days per week.

Qualifications

• 6+ years' overall experience in software development.
• 4+ years' experience with TypeScript and React.js.
• 4+ years' experience building React Native mobile apps (iOS/Android).

Responsibilities

• Lead design and refinement of mobile app features with performance goals.
• Develop rock-solid, secure, well-tested mobile components.
• Collaborate with API and back-end teams to ensure secure data handling.
• Improve build, test, and deployment processes for mobile apps.
• Support ad-hoc development and related duties as needed.

Skills

Typescript development

Reactjs

React Native

Mobile app development

iOS and Android native bridging

Tools

Appium

Maestro

PactFlow

Firebase

CodePush

Bitrise

ContentStack

Job description

Zilch is seeking an FE Software Engineer IV to drive the mobile experience across iOS and Android using React Native. You will craft high‑quality code, lead technical design, and focus on performance, security, and reliability.

With 6+ years in software, you will champion best practices, collaborate with backend teams, and push for improvements in testing, deployment, and developer experience. London-based, on-site 3 days per week.