Senior Flutter Engineer

Harvey Nash; Greater London; On-site; GBP 86,000 - 105,000; Full time

Job summary

Harvey Nash in London is seeking a Senior Mobile Software Engineer to own mobile development across Flutter and native technologies. This onsite role focuses on delivering scalable, high-performance applications used by thousands of users daily.

You will collaborate with Product, UX, QA and engineering teams, drive code quality through testing and reviews, and help shape technical direction while exploring AI-assisted development approaches.

Qualifications

• Experience building mobile apps with Flutter or native Android/iOS.
• Strong understanding of mobile architecture, testing and design patterns.
• Experience delivering production-grade mobile applications at scale.

Responsibilities

• Build and enhance mobile applications using Flutter and native Android/iOS technologies.
• Collaborate with Product, UX, QA and engineering teams.
• Design clean, scalable solutions and contribute to architecture decisions.
• Drive code quality through testing, reviews and engineering best practices.

Skills

Flutter

Kotlin/Jetpack Compose

SwiftUI

REST APIs

Mobile architecture

Testing

Code reviews

Job description

Senior Mobile Software Engineer (Flutter)

London | Onsite | Up to £95,000

We're working with a technology business that powers high-volume, real-world operational platforms used by thousands of users daily. They're looking for a Senior Mobile Engineer to take ownership of mobile development across Flutter and native mobile technologies.

You'll be joining a collaborative engineering team focused on building scalable, high-performance applications, helping shape technical direction while delivering new features and improving customer experience.

What you'll be doing:

• Building and enhancing mobile applications using Flutter
• Working across native Android (Kotlin/Jetpack Compose) and/or iOS (SwiftUI)
• Designing clean, scalable solutions and contributing to architecture decisions
• Collaborating with Product, UX, QA and engineering teams
• Driving code quality through testing, reviews and engineering best practices
• Helping optimise performance and reliability across mobile platforms
• Exploring modern AI-assisted development approaches and tooling

What we’re looking for:

• Background in native Android or iOS development
• Experience building and integrating REST APIs
• Strong understanding of mobile architecture, testing and software design patterns
• Experience delivering production-grade mobile applications at scale
• Comfortable working in a highly collaborative engineering environment

Opportunity to influence a growing mobile capability and work on business-critical products