a global impact, and ready to excel in a dynamic, high-energy environment. Join our team and help shape the future of AI. Location and Legalities This full-time Mobile Developer position is based onsite in our brand-new Ultralytics office in London, UK. Applicants must have legal authorization to work in the UK, as Ultralytics does not provide … visa sponsorship. What You'll Do As a Mobile Developer at Ultralytics, you will contribute to the development and refinement of our open-source iOS and Android apps, which facilitate real-time edge inference of trained YOLO models. Key responsibilities include: Designing and implementing mobile applications using Flutter for both iOS and Android platforms (native experience is … and ship new features with a focus on cloud-to-edge AI capabilities. Maintaining code quality, organization, and automatization. Staying up-to-date with the latest industry trends in mobiledevelopment and machine learning technologies. Your strategic vision and technical expertise will be essential in supporting Ultralytics' mission of delivering top-tier machine learning tools and models to More ❯
Lead Mobile/Flutter Developer On behlaf of a fantastic client, we're looking for an experienced Flutter Engineer to take ownership of mobiledevelopment and help shape the future of our apps. You'll lead a squad of talented engineers, drive technical excellence, and ensure our apps deliver a clean UI, smooth performance, and a great … user experience. The role Build and refine Flutter apps with strong focus on UI, animations, performance, and reliability Own the mobile architecture: state management, networking, CI/CD pipelines, testing frameworks, monitoring, and alerting Lead and mentor the squad: plan sprints, unblock engineers, coach junior developers, and raise risks early Collaborate with cross-functional teams to align technical decisions … code quality through reviews, feedback, and technical leadership What we're looking for 3+ years building and maintaining production Flutter apps at scale 5+ years in iOS and Android development (Swift, Java, Flutter) 10+ years of professional software engineering experience Deep knowledge of modern state management approaches Hands-on experience with monitoring tools (Firebase Crashlytics, Sentry, New Relic, or More ❯
Southampton, Hampshire, England, United Kingdom Hybrid/Remote Options
Hays Specialist Recruitment Limited
React Native Mobile Developer (Bluetooth LE/IoT)Hybrid in Hampshire or UK Remote£60000- £75000 + Benefits Note: - This role cannot offer Visa Sponsorship.- Must have 3+ years working commercially with React Native and must have Bluetooth LE experience. Your new company A leading UK-based engineering firm with decades of innovation experience is looking to hire a … React Native Mobile Engineer to join their technology team on a permanent, full-time basis. The company designs and manufactures advanced equipment used across multiple sectors. With a strong focus on quality, sustainability, and technical excellence, they offer a collaborative environment where software developers contribute to real-world solutions across R&D, manufacturing, and calibration.Their modern facility houses multi … edge projects that blend hardware, software, and data and you can work hybrid in the office, or UK remote in this role. Your new role You will possess deep mobile expertise, specialising in React Native end to end (develop, test, deploy and maintain) working on full deployments to both the Google Play and Apple Store, including CI/CD More ❯
Lymington, Hampshire, South East, United Kingdom Hybrid/Remote Options
Hays
React Native Mobile Developer (Bluetooth LE/IoT) Hybrid in Hampshire or UK Remote £60000- £75000 + Benefits Note: - This role cannot offer Visa Sponsorship. - Must have 3+ years working commercially with React Native and must have Bluetooth LE experience. Your new company A leading UK-based engineering firm with decades of innovation experience is looking to hire a … React Native Mobile Engineer to join their technology team on a permanent, full-time basis. The company designs and manufactures advanced equipment used across multiple sectors. With a strong focus on quality, sustainability, and technical excellence, they offer a collaborative environment where software developers contribute to real-world solutions across R&D, manufacturing, and calibration. Their modern facility houses … edge projects that blend hardware, software, and data and you can work hybrid in the office, or UK remote in this role. Your new role You will possess deep mobile expertise, specialising in React Native end to end (develop, test, deploy and maintain) working on full deployments to both the Google Play and Apple Store, including CI/CD More ❯
Ready to work on innovative mobile tech that supports real-world sustainability? We're expanding our Mobile Engineering team and looking for a Mobile Engineer to help drive feature development and improvement across our Android and cross-platform apps. As part of Selected Interventions — now a proud member of the AMCS Group — you'll work in … a Microsoft stack and deployed via Azure, ECHO is used by global, multi-billion turnover companies to manage complex field operations through a seamless suite of web, desktop, and mobile applications. What Makes Us Different We're specialists in environmental services, with a mission to help the planet operate more sustainably. Now part of AMCS Group, we offer the … agility of a close-knit team with the global scale and resources to grow your career. Role Description This is a full-time hybrid role for an experienced Mobile Engineer. You'll support the Mobile Team in maintaining and developing features for Onboard. Working within a focused squad under the direction of the Mobile Team Lead, you More ❯
Lead Flutter Developer We're looking for an experienced Flutter Engineer to take ownership of mobiledevelopment and help shape the future of our apps. You'll lead a squad of talented engineers, drive technical excellence, and ensure our apps deliver a clean UI, smooth performance, and a great user experience. The role Build and refine Flutter apps … with strong focus on UI, animations, performance, and reliability Own the mobile architecture: state management, networking, CI/CD pipelines, testing frameworks, monitoring, and alerting Lead and mentor the squad: plan sprints, unblock engineers, coach junior developers, and raise risks early Collaborate with cross-functional teams to align technical decisions with product goals Track and improve app health, including … code quality through reviews, feedback, and technical leadership What we're looking for 3+ years building and maintaining production Flutter apps at scale 5+ years in iOS and Android development (Swift, Java, Flutter) 10+ years of professional software engineering experience Deep knowledge of modern state management approaches Hands-on experience with monitoring tools (Firebase Crashlytics, Sentry, New Relic, or More ❯
Reading, Oxfordshire, United Kingdom Hybrid/Remote Options
Hays Technology
Hays are now looking for a Mobile Application Developer for one of our local clients. Day Rate is Negotiable, Inside IR35 Remote Working 6-month contract Role Summary This position plays a key role in sustaining and improving a mobile platform that enables offline capabilities and supports operational teams in the field. The role will start as a … contract engagement, with the possibility of becoming a permanent opportunity. Core Responsibilities Design, build, and refine mobile applications with a strong emphasis on offline usability. Work closely with technical and business teams to deliver intuitive, reliable solutions. Diagnose and resolve issues, particularly those impacting offline performance, to ensure smooth user experience. Document technical workflows and participate in knowledge-sharing … sessions. Assist in scaling and deploying the mobile solution across operational environments. Engage with stakeholders to gather requirements and deliver solutions within agreed timelines. Required Skills & Experience Demonstrated expertise in mobiledevelopment for iOS and/or Android . Solid understanding of offline-first principles and data sync mechanisms. Hands-on experience with frameworks such as React More ❯
Reading, Berkshire, United Kingdom Hybrid/Remote Options
Hays Technology
Hays are now looking for a Mobile Application Developer for one of our local clients. Day Rate is Negotiable, Inside IR35 Remote Working 6-month contract Role Summary This position plays a key role in sustaining and improving a mobile platform that enables offline capabilities and supports operational teams in the field. The role will start as a … contract engagement, with the possibility of becoming a permanent opportunity. Core Responsibilities Design, build, and refine mobile applications with a strong emphasis on offline usability. Work closely with technical and business teams to deliver intuitive, reliable solutions. Diagnose and resolve issues, particularly those impacting offline performance, to ensure smooth user experience. Document technical workflows and participate in knowledge-sharing … sessions. Assist in scaling and deploying the mobile solution across operational environments. Engage with stakeholders to gather requirements and deliver solutions within agreed timelines. Required Skills & Experience Demonstrated expertise in mobiledevelopment for iOS and/or Android . Solid understanding of offline-first principles and data sync mechanisms. Hands-on experience with frameworks such as React More ❯
Mobile Apps Developer (Native iOS & Android, Cross Platform) Guildford, Surrey (Office-Based) £70000 - £120000 + 25% Bonus, 10% Pension, Private Medical. Must haves: - Must work 5 days per week in the office in Guildford. - Must have Native App examples, both iOS and Android platforms live in the App Store. Your new company This leading Software provider are looking to … bolster their engineering team with a Mobile Apps Developer hire (we need experience with at least 2 out of 3 from native iOS, native Android and Cross-Platform/Hybrid apps). You'll be the first dedicated Mobile Developer in the business so it's a massive opportunity to shape the future direction of the App Development … an exciting time to be joining. Your new role Working for a business that is recognise as the dominant player in their industry, you'll be contributing to the Development of 2 best-in-class existing applications for iOS and Android platforms, as well as leading the charge for exciting new cross platform app developments for the organisation. You More ❯
technology companies. They are now looking for a React Native Engineer to join their expanding engineering group. This person will play a key role in developing and scaling their mobile applications, working closely with product, AI and infrastructure teams to deliver high impact features. What You Will Do Build and maintain high quality mobile applications for iOS and … app store release lifecycle including submissions, updates and maintenance Monitor app stability and performance using tools for analytics, logging and crash reporting Influence architectural and tooling decisions as the mobile stack evolves What Makes You a Strong Match Extensive hands-on experience shipping React Native applications to production Strong background in native mobiledevelopment for either iOS … or Android with a preference for iOS Experience bridging React Native with Swift or Kotlin for native modules Experience managing production mobile apps including releases, monitoring and issue resolution A track record of owning and delivering polished mobile experiences end to end A Computer Science degree or equivalent technical background Comfort working in a fast moving environment where More ❯
iOS applications that integrate with a suite of advanced electronic systems. This role is ideal for someone who thrives in a fast-moving engineering environment and enjoys shaping modern mobile experiences from the ground up. About the Role You will take a key role in developing cross-platform mobile applications, while also delivering high-quality native iOS solutions … contribute to architectural decisions, uphold coding standards, support agile release cycles, and collaborate closely with UI/UX, architecture, QA, and product stakeholders. What Youll Bring Strong experience in mobiledevelopment, with deep expertise in native iOS (Swift, SwiftUI, UIKit). Practical experience with Kotlin Multiplatform and Compose Multiplatform, ideally with apps shipped to both stores. Solid understanding More ❯
London, South East, England, United Kingdom Hybrid/Remote Options
Noir
Front End Developer - Global Workforce Technology Innovator - London (Tech stack: React, React Native, TypeScript, JavaScript (ES6+), HTML, CSS, Component Libraries, Design Systems, State Management (Redux, Zustand, MobX, Apollo), Web & Mobile UI/UX, Accessibility, Front End Architecture) Our client began over a decade ago with a bold vision: to transform organisational scheduling by replacing outdated processes with intelligent, beautifully … intuitive, high-performance interfaces, and excited about delivering cross-platform experiences using React Native . You'll play a key role in shaping the UI across both web and mobile platforms, while influencing architectural decisions and raising the bar for engineering excellence. You'll be working in a modern front-end environment that includes React , React Native , TypeScript, component … driven development, and a rapidly evolving design system. The team values engineers who are curious, collaborative, and eager to explore new ways of solving complex challenges, whether that's improving performance, enhancing accessibility, or leveraging tools like Storybook, Vite, and cutting-edge AI workflows. As a senior engineer, you'll help define the future of their shared codebase while More ❯
iOS Developer - Build the Next Generation of Mobile Banking London/Hybrid Make a Real Impact in a Prestigious Private Bank Ready to build something that genuinely matters? An exceptional opportunity has opened with one of Britain’s most historic private banks as they fast-track their digital transformation and you could play a key role in delivering an … outstanding mobile banking experience for high-net-worth customers who expect nothing but excellence. They are modern, ambitious, and investing heavily in technology. Now, they’re searching for an iOS Developer who wants to create real impact, push boundaries, and help shape the future of premium digital banking. Why This Role Is Special This isn’t just another app … discerning, digitally engaged customers. Developing cutting-edge features using Swift, Objective-C, and modern iOS frameworks. Bringing fresh ideas to enhance UX, security, reliability, and performance. Embedding testing throughout development to ensure an exceptional customer experience. Working within a modern agile squad, contributing to planning, refinement, and continuous improvement. Taking ownership across the full lifecycle: concept code test release More ❯
platform Job Description: Join a pioneering team as a Technical Co-Founder, building the social discovery layer for the creator economy. You'll lead the technical vision, hands-on development of the MVP, and scale the engineering team for a multi-market consumer social app. This role demands a builder, leader, and strategist ready to ship fast and scale … economy and ex-HelloFresh leadership. Build a hyper-personalized recommendation engine from the ground up, shaping the future of social discovery. What you will do: Lead the hands-on development and delivery of the Alpha and MVP for closed and beta testing, targeting a Q1/Q2 2026 public launch. Define and execute the technical roadmap for post-launch … foundation for growth, including hiring founding engineers and establishing robust engineering practices. The ideal candidate: Possesses 5-10 years of senior/lead full-stack engineering experience, with strong mobiledevelopment skills (React Native, Flutter). Has previous early-stage startup experience (first 1-3 technical hires) and a track record of shipping consumer-facing mobile products. More ❯
Mid-Level Mobile Developer (iOS) Brighton, 4 days per week in office, £50,000-£70,000 DOE Mid-Level iOS Developer required by a Brighton based Software House. This is a new role which would be perfect for someone looking to build polished, high-performing mobile apps while working in a collaborative, creative environment. We are looking for … integrate app functionality Ensuring apps perform smoothly through memory management, multi-threading, and performance optimisation Collaborating with cross-functional teams on exciting projects Nice to have: experience with Android development (Kotlin) Our client offers a vibrant office culture and you will have the opportunity to work on diverse, challenging projects with a skilled and supportive team. Salary More ❯
Mid-Level Mobile Developer (iOS) Brighton, 4 days per week in office, £50,000-£70,000 DOE Mid-Level iOS Developer required by a Brighton based Software House. This is a new role which would be perfect for someone looking to build polished, high-performing mobile apps while working in a collaborative, creative environment. We are looking for … integrate app functionality Ensuring apps perform smoothly through memory management, multi-threading, and performance optimisation Collaborating with cross-functional teams on exciting projects Nice to have: experience with Android development (Kotlin) Our client offers a vibrant office culture and you will have the opportunity to work on diverse, challenging projects with a skilled and supportive team. Salary More ❯
Weybridge, Surrey, England, United Kingdom Hybrid/Remote Options
Noir
.NET Developer with React Native - Weybridge (.NET Developer, Web Developer, Mobile Developer, .NET, React Native, React, CSS, HTML, Bootstrap, APIs, Web Applications, Mobile Applications, SQL, Azure, .NET Developer, Web Developer, Mobile Developer) Our client is an exciting and cutting-edge technology giant with a global presence. They have been a market leader within the financial services sector … strong React Native skills to join an exceptional team and take the lead on developing our in-house platforms, which include both B2B and B2C applications, working with both mobile and web technologies. The successful candidate will possess expert skills in .NET and React Native, as well as React, CSS, HTML and Bootstrap. Previous experience with APIs, Web Applications … Native experience from all backgrounds. This is an opportunity to work for a prestigious brand that will do wonders for your career. They invest heavily in training and career development; top performers are guaranteed a career path into senior and lead positions within 12 months. Location: Weybridge/Hybrid Salary: £45k - £55k + Bonus + Pension + Excellent Benefits More ❯
to lead the build of a cutting-edge healthtech app that uses computer vision and AI to measure vital signs through a smartphone camera. This role combines hands-on development, technical leadership, and collaboration within a regulated medical software environment. What You'll Do Lead architecture and development of a high-performance iOS app. Work within ISO … multithreading, memory management, and performance optimisation. Strong communication and ability to mentor others. Background in regulated, healthtech, or real-time processing is a bonus. Experience 7+ years of iOS development, including 2+ years in a lead or principal role. Proven delivery of high-quality production apps. More ❯
Mid-Level Mobile Developer (iOS) Brighton, 4 days per week in office, £50,000-£70,000 DOE Mid-Level iOS Developer required by a Brighton based Software House. This is a new role which would be perfect for someone looking to build polished, high-performing mobile apps while working in a collaborative, creative environment click apply for full More ❯
Mid-Level Mobile Developer (iOS) Brighton, 4 days per week in office, £50,000-£70,000 DOE Mid-Level iOS Developer required by a Brighton based Software House. This is a new role which would be perfect for someone looking to build polished, high-performing mobile apps while working in a collaborative, creative environment. We are looking for More ❯
Mid-Level Mobile Developer (iOS) Brighton, 4 days per week in office, £50,000-£70,000 DOE Mid-Level iOS Developer required by a Brighton based Software House. This is a new role which would be perfect for someone looking to build polished, high-performing mobile apps while working in a collaborative, creative environment. We are looking for More ❯