Senior iOS Developer

WARACLE; Greater London; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

27 days annual leave

Company pension 5%

Death in Service benefit

Health Cash Plans

Employee Assistance Programme

Hybrid working

Udemy/learning budget

Cycle to Work

Gym/retail discounts

Parental leave

Job summary

Waracle is seeking a Senior Developer to join our hybrid team, blending remote work with two days per week in the London office or on client sites. You will own the craft of building high-performance iOS components, while staying curious across the mobile ecosystem and collaborating with React Native/Flutter skill sets.

You’ll lead delivery, mentor colleagues, and contribute to a culture of engineering excellence, testing, and continuous improvement within a world-class technology consultancy.

Qualifications

• Proficient Swift/iOS development with Xcode, Git/GitHub, XCTest and XCUITest.
• Strong understanding of modular app architecture and MVVM patterns.
• Experience building, maintaining and validating SDKs for consumption by teams.

Responsibilities

• Design and deliver end-to-end iOS features and subsystems, optimise performance and accessibility.
• Explain trade-offs clearly to clients and stakeholders and demo progress.
• Lead delivery of features or workstreams and mentor junior engineers.

Skills

Swift

Xcode

Git/GitHub

XCTest

XCUITest

MVVM

SDK development

Swift Concurrency

Flutter

React Native

Tools

GitHub Actions

Fastlane

Job description

The Role

Waracle are looking for a Senior Developer for an exciting new role joining our world-class digital technology consultancy and home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation.

We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients to innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design and delivery to operations.

This is a Hybrid role, offering the flexibility to balance your professional and personal life, with 2 days a week spent connecting with colleagues in our London office or on client site

We arelooking for a self- motivated Senior Developer, proficient in iOSmobile development. In this position, you will drive the end-to-end craft of building, developing, and deploying high-performance iOS components and services.

Whilst iOS will be your core area of expertise, we’re looking for someone with a curiosity and willingness to work across the wider mobile ecosystem. Experience with, or an openness to working with, frameworks such as React Native and Flutter would be highly valued.

You don’t need to be an expert in every framework - we’re interested in developers who have strong engineering fundamentals, can adapt to different technologies and enjoy learning new approaches to solving mobile challenges!

Key aspects of the role include:

• Technical Excellence & Delivery: Designing and delivering end-to-end features and small subsystems; optimising app performance, accessibility, and responsiveness; and being accountable for successful delivery of features.
• Communication & Stakeholder Management: Explaining technical trade-offs in plain language; and presenting demos confidently to clients and stakeholders to shape tactical direction.
• Leadership & Team Collaboration: Leading delivery of specific features or workstreams; and mentoring junior colleagues in both craft and process.
• Culture & Community of Practice: Regularly mentoring others across the practice; and representing Waracle in interviews and recruitment panels.
• Participating in ad-hoc duties from time to time as required by management.

Research shows that underrepresented groups tend to only apply for roles that they believe they meet 100% of the criteria for. At Waracle, we want to buck that trend! We hire for passion, potential and mindset as much as credentials. If you think you'd be incredible in the role, then apply - even if you don't think you tick every box.

What you'll bring

Essential Skills & Experience:

• Core Language & Framework Expertise: Strong programming expertise in Swift, with hands-on experience across Xcode, Git/GitHub, XCTest and XCUITest, and a proven track record of shipping high-quality, production-scale iOS applications.
• Architecture & Scalability: Deep understanding of modular app architecture and proven experience implementing scalable patterns such as MVVM.
• SDK Development: Experience building, maintaining and integrating clean, scalable and well-documented SDKs designed for seamless adoption across engineering teams.
• Swift Concurrency & Performance: Solid grasp of multi-threading and concurrency models—including async/await, GCD, and Operations—to engineer performant, thread-safe solutions.
• Cross-Functional Collaboration: Excellent communication skills with a focus on driving engineering reusability, inner-sourcing, and minimising technical waste across distributed teams.
• Quality & Engineering Practices: Active advocate for software excellence, using practices like Pair Programming, Test-Driven Development (TDD), thorough Code Reviews, CI, and robust Automated Testing.
• Cross-Platform Knowledge: Direct experience or familiar exposure with cross-platform mobile frameworks such as Flutter or React Native.

Desirable Skills & Experience:

• Mobile Security: Understanding of core mobile security principles, including secure data storage, robust authentication flows, and safe data handling.
• Mobile DevOps & CI/CD: Hands-on experience building and maintaining mobile deployment pipelines using tools like GitHub Actions and Fastlane to automate build, test, and release workflows.

What to expect from our hiring process

1. First Hello: An informal chat with your dedicated Talent Attraction Partner to talk about Waracle, what you want out of your next move, salary, benefits, and office hybrid working model.

2. Craft Showcase: A chance to demonstrate your real-world expertise. Depending on the role, this will be a focused take-home task (capped at 2–3 hours to respect your time).

3. Talking Impact: A collaborative deep dive into how you solve problems, work with others, and raise the bar, guided by our core values and competency framework.

Your Talent Attraction Partner will be in your corner through every step right up to your Welcome Ritual on day one.

Our Benefits

We believe in supporting our team, inside and outside of work. Here's a glimpse of what you can expect:

• Rest & Recharge: You'll receive 27 days of annual leave, plus 8 bank holidays, totaling 35 days of holiday to unwind and pursue your passions.
• Financial Future & Security: Plan for retirement with our company-matched 5% pension contribution. For added peace of mind, we also offer a Death in Service benefit, providing 2 x your annual salary for your loved ones.
• Health & Wellness: Our Medicash Health Cash Plans help cover everyday healthcare costs, complemented by an Employee Assistance Programme for confidential support, and Group Sickness Cover for peace of mind.
• Flexible Working: We champion hybrid working, providing a home office setup budget to ensure you're comfortable and productive wherever you are.
• Learning & Development: Invest in yourself with access to Udemy Business and a dedicated learning and development budget for continuous growth.
• Lifestyle Perks: Make the most of our Cycle to Work Scheme, and enjoy exclusive gym and retail discounts.
• Family First: Our enhanced parental leave policies include support for fertility journeys, recognising diverse family needs.
• Community & Connection: We foster a vibrant culture with regular fun meet-ups and lunch on us in the office once a month. You'll also have the opportunity to make a local impact through Spirit of Waracle, our initiative for getting involved in charitable causes locally, building strong team bonds and giving back.

We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, gender, disability, religion/belief, sexual orientation or age.