Mobile Software Engineer - iOS

United States Digital Space LLC; Greater London; On-site; GBP 77,000 - 96,000; Full time

Benefits offered by this job

Pension up to 15%

Annual bonus

Share schemes

Discounted shopping

30 days holiday

Wellbeing & parental leave

Job summary

United States Digital Space LLC in London is seeking a Mobile Software Engineer - iOS to design, build and ship high-quality iOS experiences. You’ll work with designers, product managers and engineers to deliver consumer fintech features that delight users.

The role requires strong Swift/SwiftUI skills, UIKit knowledge, and experience shipping apps to the App Store. This is a hybrid role in London offering an energetic, collaborative environment and opportunities to influence product direction.

Qualifications

• Experience developing mobile applications that delight users and deliver excellent customer experiences.
• Proven experience shipping one or more applications to the Apple App Store.
• Strong development experience with Swift and modern iOS frameworks.

Responsibilities

• Design, build and ship high-quality iOS experiences in a cross-functional team.
• Collaborate with designers, product managers and engineers to iterate features.
• Identify performance improvements, fix bugs and ensure robust test coverage.

Skills

Swift

SwiftUI

UIKit

Swift Concurrency

Unit tests

Agile/Scrum

OOP

Cross-functional

App Store

Job description

End Date

Tuesday 08 September 2026

Salary Range

£76,760 - £115,140

We support flexible working – click here for more information on flexible working options

Flexible Working Options

Hybrid Working

Job Description Summary

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Job Description

JOB TITLE: Mobile Software Engineer - iOS

SALARY: £76,760 - £95,950

LOCATION: Hybrid (London)

HOURS: Full Time (35 Hours)

WORKING PATTERN: Our work style is hybrid, which involves spending at least two days per week, or 40% of our time, at one of our office sites. Colleagues with disabilities can be supported with workplace adjustments including hybrid working expectations in line with our Flexibility Works policy.

What you’ll be doing…

You’ll join a cross-functional team responsible for designing, building and shipping high-quality mobile experiences for iOS users. Working closely with designers, product managers and fellow engineers, you’ll help create innovative, consumer-facing features that delight customers and simplify their financial lives. You’ll contribute exceptional engineering expertise, identify opportunities to improve user experiences, champion attention to detail, resolve bugs, improve application performance and iterate rapidly based on customer needs. This is an opportunity to take ownership, thrive in a fast-paced environment and help shape the future of one of the most exciting fintech products in the market.

Why Join us?

If you think all banks are the same, you’re wrong. We’re a pioneering, fast-changing business that’s shaping finance as a force for good. If you’re after a role where you can have an impact and do the best work of your career, you’ve just found it

What we’re looking for?

• Experience developing mobile applications that delight users and deliver excellent customer experiences
• Proven experience shipping one or more applications to the Apple App Store
• Strong development experience with Swift
• Experience building modern iOS applications using SwiftUI
• Experience developing with UIKit
• Experience using Swift Concurrency
• Experience writing unit tests, integration tests and UI tests
• Experience working within Agile or Scrum delivery environments
• Strong understanding of Object-Oriented Programming principles
• Ability to collaborate effectively within cross-functional teams
• Passion for creating intuitive and high-quality user experiences

And it would be great if you had any of the following…

• Experience designing and implementing consumer-facing fintech products
• Strong understanding of iOS UI patterns and best practices
• Experience optimising application performance and reliability
• Knowledge of modern mobile architecture patterns
• Experience contributing to product and design discussions
• Passion for continuous improvement and innovation
• Experience working in fast-paced, scaling technology organisations

This is a place for you…

Our ambition is to be the leading UK business for diversity, equity and inclusion, supporting our customers, colleagues and communities. We are committed to creating an environment in which everyone can thrive, learn and develop.

We were one of the first major organisations to set goals on diversity in senior roles, create a menopause health package, and launch a dedicated Working with Cancer initiative.

We offer reasonable workplace adjustments for colleagues with disabilities, including flexibility in office attendance, location and working patterns. As a Disability Confident Leader, we guarantee interviews for a fair and proportionate number of applicants who meet the minimum criteria for the role and have a disability, long-term health or neurodivergent condition, through the Disability Confident Scheme.

We provide reasonable adjustments throughout the recruitment process to reduce or remove barriers - just let us know what you need.

We also offer a wide-ranging benefits package, which includes…

• A generous pension contribution of up to 15%
• An annual bonus award, subject to Group performance
• Share schemes including free shares
• Benefits you can adapt to your lifestyle, such as discounted shopping
• 30 days’ holiday, with bank holidays on top
• A range of wellbeing initiatives and generous parental leave policies

At the company, we're driven by a clear purpose; to help Britain prosper. Across the Group, our colleagues are focused on making a difference to customers, businesses and communities. With us you'll have a key role to play in shaping the financial services of the future, whilst the scale and reach of our Group means you'll have many opportunities to learn, grow and develop.

We keep your data safe. So, we'll only ever ask you to provide confidential or sensitive information once you have formally been invited along to an interview or accepted a verbal offer to join us which is when we run our background checks. We'll always explain what we need and why, with any request coming from a trusted the company person.

We're focused on creating a values‑led culture and are committed to building a workforce which reflects the diversity of the customers and communities we serve. Together we’re building a truly inclusive workplace where all of our colleagues have the opportunity to make a real difference.