551 to 575 of 715 Mobile App Jobs in the UK

edge innovations in computing and are seeking exceptional talent to join their team. Your Role: You will play a crucial role in optimizing the performance of a new mobile operating systems. Your responsibilities include: Performance Optimization : Leverage your extensive experience to enhance system architecture, boost performance, and ensure efficient power consumption and heat management. System Expertise : Apply your … deep understanding of mobile operating system principles to innovate and drive system improvements. Cutting-edge Innovation : Collaborate with top-tier teams to push the boundaries of mobile OS performance. Main Responsibilities : Enhancing Operating System Performance: Conduct in-depth research on runtime resource management and control policies. Investigate kernel task scheduling and SOC frequency modulation mechanisms. Analyze … e.g., JAVA, C++, Python, JS, HTML, JavaScript, GO) Extensive experience in engineering roles specializing in operating system performance optimization, systems optimization, or related areas. Desirable: Experience in developing mobile application software, Internet software or iOS/Android operating systems Familiarity with front-end development technologies including but not limited to JavaScript frameworks (e.g., React, Angular, Vue.js), HTML5, and More ❯

Lead Mobile Engineer Hybrid/Remote working options. Salary circa £70,000 - £75,000 plus benefits iOS, Swift, Android, Kotlin We have an exciting opportunity for a Lead Mobile Engineer with a market leading company who are at the forefront of delivering technology to the transport sector. The technology is used by hundreds of thousands of … users every day for travel to education, work and independence. The Lead Mobile Engineer is expected to be an experienced developer in either iOS or Android development and the enthusiasm to take the lead in delivering and supporting these apps. The Role: Serve as the technical backbone for all mobile initiatives Leading the mobile … new features About You! The ideal candidate will have passion and enthusiasm for quality and best practice Technically you will have demonstrable experience building & delivering iOS and Android mobile applications for fast-growing, consumer-facing organisations. You will be a champion of Object-Oriented programming and software engineering principles Technical: Knowledge of the following technologies is expected: iOS More ❯

Lead Mobile Engineer Hybrid/Remote working options. Salary circa £70,000 - £75,000 plus benefits iOS, Swift, Android, Kotlin We have an exciting opportunity for a Lead Mobile Engineer with a market leading company who are at the forefront of delivering technology to the transport sector. The technology is used by hundreds of thousands of … users every day for travel to education, work and independence. The Lead Mobile Engineer is expected to be an experienced developer in either iOS or Android development and the enthusiasm to take the lead in delivering and supporting these apps. The Role: Serve as the technical backbone for all mobile initiatives Leading the mobile … new features About You! The ideal candidate will have passion and enthusiasm for quality and best practice Technically you will have demonstrable experience building & delivering iOS and Android mobile applications for fast-growing, consumer-facing organisations. You will be a champion of Object-Oriented programming and software engineering principles Technical: Knowledge of the following technologies is expected: iOS More ❯

Fully flexible hybrid (remote-friendly) Our client is a homegrown SaaS success story – a multi-award-winning software company developing a powerful field service management platform used by mobile workforces across the UK and Ireland. Their platform helps organisations in sectors like construction, maintenance, and fire & safety manage jobs, assets, and communication efficiently — enabling teams in the field … customers, the business continues to invest heavily in innovation and new features. Backed by a leading communications group, they provide customers with an integrated service offering — from rugged mobile hardware through to the software itself. It’s a collaborative, family-run environment with a modern culture, strong technical standards, and a fully refurbished HQ in Belfast. The Role … They’re looking for a Senior Full Stack Developer to take a lead role in the design, development, and delivery of their web and mobile applications. You’ll work across the full development lifecycle — from shaping technical requirements and implementing new features, to optimising performance and supporting product scalability as the platform continues to evolve. This is a More ❯

Lead Mobile Engineer Hybrid/Remote working options. Office in Bournemouth, Dorset Salary circa £70,000 - £75,000 plus benefits iOS, Swift, Android, Kotlin We have an exciting opportunity for a Lead Mobile Engineer with a market leading company who are at the forefront of delivering technology to the transport sector. The technology is used by … hundreds of thousands of users every day for travel to education, work and independence. The Lead Mobile Engineer is expected to be an experienced developer in either iOS or Android development and the enthusiasm to take the lead in delivering and supporting these apps. The Role: Serve as the technical backbone for all mobile initiatives Leading … the mobile team by providing coaching and mentoring to promote knowledge sharing and guiding the ways of working Onboard new customers, seeking to identify opportunities for efficiency Lead the architecture/implementation planning of new features About You! The ideal candidate will have passion and enthusiasm for quality and best practice Technically you will have demonstrable experience building More ❯

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 mobile development for iOS and/or Android . Solid understanding of offline-first principles and data sync mechanisms. Hands-on experience with More ❯

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 mobile development for iOS and/or Android . Solid understanding of offline-first principles and data sync mechanisms. Hands-on experience with More ❯

on call/shifts To be published on job boards from below onwards The Role We are looking for a passionate and experienced Android Developer to join our mobile development team. The ideal candidate will have a strong grasp of Kotlin, MVVM Clean Architecture, and modern Android development practices including Jetpack Compose and reactive programming. You will play … a key role in building high-quality, scalable, and maintainable mobile applications that deliver exceptional user experiences. Your responsibilities: (Up to 10, Avoid repetition) Design, develop, and maintain Android applications using Kotlin and Jetpack Compose. Implement MVVM Clean Architecture to ensure scalable and testable code. Apply reactive programming principles using Coroutines, Flows, Channels, and RxJava. Integrate data binding … Scrum environments. Desirable skills/knowledge/experience: (As applicable) Exposure to CI/CD tools and mobile DevOps practices. Familiarity with Firebase, Google Play Console, and app deployment processes. Experience with performance tuning and memory optimization. Knowledge of security best practices in mobile development.. More ❯

to the PropTech sector are looking for a talented .NET MAUI/Xamarin Developer to join their product engineering team. You will be building and enhancing cross-platform mobile apps used by a range of private and public institutions. You'll be working C# and .NET MAUI/Xamarin, working on mobile UI, offline sync, device … integrations and secure API connections. This position will give you scope to shape mobile architecture and contribute your ideas directly to a platform used by high profile clients. You'll collaborate closely with product managers, designers and backend engineers, with future opportunities to mentor junior developers and influence the technical direction of the company. Requirements Proven experience building … in .NET MAUI/Xamarin and C#. Strong knowledge of MVVM and offline-first design patterns. Experience integrating with RESTful APIs, authentication and role-based security. CI/CD (App Center, GitHub Actions, Azure DevOps). Solid communication skills, with the ability to work across technical and non-technical stakeholders. Desirables Xamarin to .NET MAUI migration experience Azure cloud More ❯

Mobile Application Tester - Appium £40,000 + benefits Belfast – flexible hybrid working This is an opportunity for a Mobile Application Tester to join an expanding software and cloud engineering team. They have grown and established themselves as key player in their field and require an experienced … Automation Test Engineer to provide Quality Assurance for a key product making a positive social impact. This role will be working across mobile applications, therefore Appium or App Automation experience is essential to be considered for this position. Required experience Appium OR App Automation experience is essential Typescript, JavaScript or C# Experience working alongside software developers More ❯

Mobile Tech Lead Up to £95k Fully remote working (UK) Would you like the opportunity to work as a Mobile Tech Lead for a leading travel organisation, where you will be responsible for architecting and delivering a brand-new post-booking mobile app. You’ll be both architect and hands-on developer, setting the … foundations, leading the technical direction, and ensuring fast, high-quality delivery with a small team. As a Mobile Tech Lead, you will define and own the mobile architecture (React Native, Expo, SDUI-first, BFF integration) as well as establishing CI/CD pipelines, release cadence, and observability. The ideal candidate will have experience mentoring other engineers. … Key requirements: 5+ years in mobile development, including 2+ in leadership/architecture. Strong expertise in React Native. Knowledge of offline-first architectures. Familiarity with BFF patterns. Experience with CI/CD and release management. Background with native mobile environments (Swift/Kotlin) would be a bonus If you’re a Mobile Tech Lead More ❯

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 … 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 mobile development … 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 of modern app architecture, testing practices, and asynchronous programming. Experience with CI/CD pipelines and a passion for building reliable, maintainable applications. A track record of delivering high-quality apps; portfolio More ❯

that enhance user experience and operational efficiency. Collaborate with clients to understand their goals through workshops, site assessments, and discovery sessions, turning technical requirements into actionable architectures. Integrate mobile applications (iOS and Android) with our spatial intelligence platform to deliver seamless navigation and indoor positioning capabilities. Develop architecture blueprints ensuring interoperability, security, and extensibility across cloud environments and … you’ll bring: 8+ years’ experience in solutions architecture, systems integration, or technical consulting within IoT, SaaS, or smart infrastructure. Technical expertise in indoor positioning, location services, or mobile navigation technologies. Solid understanding of Bluetooth Low Energy (BTLE) and infraless positioning systems. Experience building and supporting mobile applications for: iOS (Swift or Objective-C) Android (Java More ❯

Corporate Digital & Applications is a small department that builds internal applications to help BBC Staff get their work done. We look after the BBC's intranet, Gateway, internal mobile applications, public facing corporate sites, and dozens of internal bespoke web applications. Almost every person in the BBC uses at least one of our systems most weeks, and our … public every month. iPages is an internal page building system used to build Gateway and BBC Corporate sites. iPages manages a small number of editor tools, like the Uploader App and the iPages dashboard providing status info and stats for internal sites and internal comms (IC) emails. We're friendly, flexible and supportive. If you are too, you'll More ❯

with expertise in Microsoft Azure to join us and work as part of an enthusiastic, motivated, and delivery-focused agile team. We run over 50 websites and 10 Mobile Applications - including some of the biggest names in Retail. This role will focus on designing, deploying, and maintaining Azure-based infrastructure to support our global operations, implementing and optimising … classes for employees as well as discounted memberships to our clubs. Frasers Fit is our wellbeing programme which aims to support and improve colleagues Physical, Financial & Mental wellbeing. The app is accessible for every employee and includes training, nutrition and lifestyle advice- all completely free. Retail Trust – We know that its not just about physical health, mental wellness is More ❯

with expertise in Microsoft Azure to join us and work as part of an enthusiastic, motivated, and delivery-focused agile team. We run over 50 websites and 10 Mobile Applications - including some of the biggest names in Retail. This role will focus on designing, deploying, and maintaining Azure-based infrastructure to support our global operations, implementing and optimising … classes for employees as well as discounted memberships to our clubs. Frasers Fit is our wellbeing programme which aims to support and improve colleagues Physical, Financial & Mental wellbeing. The app is accessible for every employee and includes training, nutrition and lifestyle advice- all completely free. Retail Trust – We know that its not just about physical health, mental wellness is More ❯

.NET Developer, .NET 9, C# - Digital Download Site - Witney (Tech stack: .NET Developer, .NET 9, C#, Winforms, WPF, iOS, Android, Mobile, Programmer, Full Stack Engineer, Architect, .NET Developer)With operations in over 20 countries our client has fast become a major player within the digital download arena. In addition to an award winning website they have launched mobile … brings delight to their users. .NET Developer should be experienced in: .NET, C#, Winforms or WPF and Azure SQL. We are keen to hear from candidates with any mobile development experience (iOS or Android). You will be trained in all aspects of: .NET 9, Web API 2, Entity Framework, Microservices, Azure, JavaScript, Angular 19, Bootstrap, Agile and More ❯

area) Work pattern: Fully flexible hybrid (remote-friendly) Our client is a multi-award-winning SaaS company that has built one of the UK and Ireland’s leading mobile workforce management platforms. Their software enables field-based teams in construction, facilities management, and fire & safety to manage jobs, assets, and communication in real time. With over a decade … for their innovation, customer support, and industry impact. They’re now seeking an Android Developer to join their engineering team and help shape the next phase of their mobile platform’s evolution. You’ll be part of a close-knit, cross-functional product team, collaborating with designers, backend engineers, and testers to build reliable, user-friendly applications that … best practices Experience with unit testing , instrumentation testing , and debugging tools Familiarity with offline data handling , push notifications , and background services Advantageous: exposure to mobile/web app interoperability or hybrid frameworks Approx. 4 years’ experience in commercial Android development What’s on offer Salary: £60,000–£70,000 Flexible hybrid working – remote-friendly with optional access More ❯

area) Work pattern: Fully flexible hybrid (remote-friendly) Our client is a multi-award-winning SaaS company that has built one of the UK and Ireland’s leading mobile workforce management platforms. Their software enables field-based teams in construction, facilities management, and fire & safety to manage jobs, assets, and communication in real time. With over a decade … for their innovation, customer support, and industry impact. They’re now seeking an Android Developer to join their engineering team and help shape the next phase of their mobile platform’s evolution. You’ll be part of a close-knit, cross-functional product team, collaborating with designers, backend engineers, and testers to build reliable, user-friendly applications that … best practices Experience with unit testing , instrumentation testing , and debugging tools Familiarity with offline data handling , push notifications , and background services Advantageous: exposure to mobile/web app interoperability or hybrid frameworks Approx. 4 years’ experience in commercial Android development What’s on offer Salary: £60,000–£70,000 Flexible hybrid working – remote-friendly with optional access More ❯

Senior Solution Architect – Digital (Web & App) Join a team that’s shaping the future of one of the UK’s most iconic digital brands. This is your chance to help redefine a major national platform — creating secure, scalable, and cutting-edge digital experiences used by millions every week. Role Overview Location: Hybrid (Hertfordshire) Package: £100,000 - £110,000 + … Benefits Industry: Digital/Technology What You’ll Be Doing Designing modern digital architectures across web and mobile platforms. Leading technical solutions that balance performance, scalability, and security. Partnering with in-house and nearshore development teams to shape design and delivery. Transforming legacy systems into next-generation cloud-native solutions. Producing detailed design documentation — from high to low … that serves millions of users. Main Skills Needed 5–7 years’ experience in Solution Architecture, ideally in large-scale digital environments. Expertise in Kotlin, Swift, modern web/mobile frameworks, and cloud technologies (AWS/Azure). Strong background in scalable, enterprise-grade design and integration. Hands-on understanding of coding, automation, CI/CD, and DevOps tooling. More ❯

Android & iOS Engineer Roles | Kotlin/Swift | London Hybrid | Consumer App | Tech for Good 💚 Are you passionate about building high-quality mobile apps that make a genuine impact on the lives of others? 📱 Do you want to work on a product used by millions of users globally every single day? 🌍 If so, this could be the opportunity … for you. I’m working with a fast-scaling Consumer Tech/Tech-for-Good brand who have built the world’s largest app in its category. With over 15 million users and hundreds of thousands of success stories to date, this business are well on their way to Unicorn status and are seeking several talented Mobile Engineers to join them as they embark on their next phase of growth 🦄 Live roles: ✨ x2 Mid–Senior Android Engineer (Kotlin) – building cutting-edge native features, improving app performance, and working across design, architecture, and delivery. ✨ x1 Senior iOS Engineer (Swift) – shaping the iOS app’s evolution, leading on new feature delivery, and driving forward technical More ❯

Android & iOS Engineer Roles | Kotlin/Swift | London Hybrid | Consumer App | Tech for Good 💚 Are you passionate about building high-quality mobile apps that make a genuine impact on the lives of others? 📱 Do you want to work on a product used by millions of users globally every single day? 🌍 If so, this could be the opportunity … for you. I’m working with a fast-scaling Consumer Tech/Tech-for-Good brand who have built the world’s largest app in its category. With over 15 million users and hundreds of thousands of success stories to date, this business are well on their way to Unicorn status and are seeking several talented Mobile Engineers to join them as they embark on their next phase of growth 🦄 Live roles: ✨ x2 Mid–Senior Android Engineer (Kotlin) – building cutting-edge native features, improving app performance, and working across design, architecture, and delivery. ✨ x1 Senior iOS Engineer (Swift) – shaping the iOS app’s evolution, leading on new feature delivery, and driving forward technical More ❯

interface. Your challenge is to build the “magic”: the live transcription, the mid-call intervention, the post-call summaries, that defines our premium user experience. You will own the app that we will showcase to the world at Mobile World Congress (MWC) 2026, and your work will be the primary driver for our monetization strategy. Key Responsibilities … fidelity designs (e.g., Figma, Sketch) into beautiful, performant, and maintainable code. A strong understanding of Android UI performance optimization, memory management, and threading models. Experience with the full mobile development lifecycle, from ideation and prototyping to testing, release, and maintenance. Preferred Qualifications Advanced UI/UX & Conversational AI Prior experience designing or building conversational interfaces (e.g., chatbots, voice … assistants). A strong portfolio that explicitly showcases beautiful, complex, and highly responsive mobile UIs you have built. Relevant Technical Experience Familiarity with Android's native call-handling APIs (e.g., CallScreeningService, ConnectionService), as you will be integrating closely with the engineer who owns this. Experience with performance testing and profiling Android applications to hunt down and eliminate bottlenecks. More ❯

interface. Your challenge is to build the “magic”: the live transcription, the mid-call intervention, the post-call summaries, that defines our premium user experience. You will own the app that we will showcase to the world at Mobile World Congress (MWC) 2026, and your work will be the primary driver for our monetization strategy. Key Responsibilities … fidelity designs (e.g., Figma, Sketch) into beautiful, performant, and maintainable code. A strong understanding of Android UI performance optimization, memory management, and threading models. Experience with the full mobile development lifecycle, from ideation and prototyping to testing, release, and maintenance. Preferred Qualifications Advanced UI/UX & Conversational AI Prior experience designing or building conversational interfaces (e.g., chatbots, voice … assistants). A strong portfolio that explicitly showcases beautiful, complex, and highly responsive mobile UIs you have built. Relevant Technical Experience Familiarity with Android's native call-handling APIs (e.g., CallScreeningService, ConnectionService), as you will be integrating closely with the engineer who owns this. Experience with performance testing and profiling Android applications to hunt down and eliminate bottlenecks. More ❯

interface. Your challenge is to build the magic: the live transcription, the mid-call intervention, the post-call summaries, that defines our premium user experience. You will own the app that we will showcase to the world at Mobile World Congress (MWC) 2026, and your work will be the primary driver for our monetization strategy. Key Responsibilities … fidelity designs (e.g., Figma, Sketch) into beautiful, performant, and maintainable code. ? A strong understanding of Android UI performance optimization, memory management, and threading models. ? Experience with the full mobile development lifecycle, from ideation and prototyping to testing, release, and maintenance. Preferred Qualifications ? Advanced UI/UX & Conversational AI ? Prior experience designing or building conversational interfaces (e.g., chatbots, voice … assistants). ? A strong portfolio that explicitly showcases beautiful, complex, and highly responsive mobile UIs you have built. ? Relevant Technical Experience ? Familiarity with Android's native call-handling APIs (e.g., CallScreeningService, ConnectionService), as you will be integrating closely with the engineer who owns this. ? Experience with performance testing and profiling Android applications to hunt down and eliminate bottlenecks. More ❯