61 mobile app developer jobs found

Mobile App Developer (Freelance / LTD Contract) Remote (UK-based preferred) Contract Company: Feel Free Social LTD Contract Type: Freelance (Outside IR35, LTD Payment) Duration: 2–3 months (MVP build, with potential for ongoing work) ⸻ About the Role We’re an early-stage UK startup developing a new social and location-based mobile platform. We’re looking for a skilled mobile app developer to take our wireframes and product roadmap and deliver a cross-platform MVP that includes real-time location features, messaging, user profiles, and event-based logic. This is a hands-on build opportunity for someone who enjoys shaping early product direction and delivering clean, scalable code. ⸻ What You’ll Be Doing Develop a mobile app (React Native or Flutter preferred) Implement location-based features, user authentication, and private messaging Integrate a backend (e.g. Firebase or Supabase) Handle mobile app store deployment (TestFlight + Play Console) Collaborate...

Contract Role: React Native Mobile App Developer (Android Tablet / Geospatial Logistics) Duration: 1–2 months Location: Remote Start Date: ASAP We are hiring a  React Native  developer to deliver a  tablet-based Android app  focused on  geospatial tracking for logistics in agriculture . This is a contract role for an experienced individual who can deliver from day one — this is not a "learn on the job" opportunity. The backend engineering is already in place and a working prototype exists. Your role will be to take this forward into a robust, production-ready application. Key Skills Required: Strong experience with  React Native Proficient with  AWS Amplify , particularly  Auth  and  DataStore Experience working with  background services  on Android Solid knowledge of  offline-first apps , ideally using Amplify DataStore Demonstrable experience working with  GPS in...

Mobile App Developer (Freelance / LTD Contract) Remote (UK-based preferred) Contract Company: Feel Free Social LTD Contract Type: Freelance (Outside IR35, LTD Payment) Duration: 2–3 months (MVP build, with potential for ongoing work) ⸻ About the Role We’re an early-stage UK startup developing a new social and location-based mobile platform. We’re looking for a skilled mobile app developer to take our wireframes and product roadmap and deliver a cross-platform MVP that includes real-time location features, messaging, user profiles, and event-based logic. This is a hands-on build opportunity for someone who enjoys shaping early product direction and delivering clean, scalable code. ⸻ What You’ll Be Doing Develop a mobile app (React Native or Flutter preferred) Implement location-based features, user authentication, and private messaging Integrate a backend (e.g. Firebase or Supabase) Handle...

Mobile App Developer - AI Trainer Full job description We are looking for proficient programmers to join our team to train our AI chatbots to code. You will work with the chatbots that we are building in order to measure their progress, as well as write and evaluate code. To apply to this role, you will need to be proficient in either Python and/or JavaScript. Your role will require proficiency in at least one programming language/framework (JavaScript, TypeScript, Python, C, C#, C++, HTML/CSS, React, Go, Java, Kotlin, SQL, or Swift) in order to solve coding problems (think LeetCode, HackerRank, etc). For each coding problem, you must be able to explain how your solution solves the problem. As part of the application process, you will be asked to complete an assessment. If you pass, you will gain access to projects. Based on the quality of your work, you will continue to receive projects regularly. We find our most successful candidates...

Mobile App Developer (Freelance / LTD Contract) Remote (UK-based preferred) Contract Company: Feel Free Social LTD Contract Type: Freelance (Outside IR35, LTD Payment) Duration: 2–3 months (MVP build, with potential for ongoing work) ⸻ About the Role We’re an early-stage UK startup developing a new social and location-based mobile platform. We’re looking for a skilled mobile app developer to take our wireframes and product roadmap and deliver a cross-platform MVP that includes real-time location features, messaging, user profiles, and event-based logic. This is a hands-on build opportunity for someone who enjoys shaping early product direction and delivering clean, scalable code. ⸻ What You’ll Be Doing Develop a mobile app (React Native or Flutter preferred) Implement location-based features, user authentication, and private messaging Integrate a backend (e.g. Firebase or Supabase) Handle...

We are looking for proficient programmers to join our team to train our AI chatbots to code. You will work with the chatbots that we are building in order to measure their progress, as well as write and evaluate code. To apply to this role, you will need to be proficient in either Python and/or JavaScript. Your role will require proficiency in at least one programming language/framework (JavaScript, TypeScript, Python, C, C#, C++, HTML/CSS, React, Go, Java, Kotlin, SQL, or Swift) in order to solve coding problems (think LeetCode, HackerRank, etc). For each coding problem, you must be able to explain how your solution solves the problem. As part of the application process, you will be asked to complete an assessment. If you pass, you will gain access to projects. Based on the quality of your work, you will continue to receive projects regularly. We find our most successful candidates work between 5-20 hours per week, up to 40 hours. Benefits: This is a full-time or...

We are looking for proficient programmers to join our team to train our AI chatbots to code. You will work with the chatbots that we are building in order to measure their progress, as well as write and evaluate code. To apply to this role, you will need to be proficient in either Python and/or JavaScript. Your role will require proficiency in at least one programming language/framework (JavaScript, TypeScript, Python, C, C#, C++, HTML/CSS, React, Go, Java, Kotlin, SQL, or Swift) in order to solve coding problems (think LeetCode, HackerRank, etc). For each coding problem, you must be able to explain how your solution solves the problem. As part of the application process, you will be asked to complete an assessment. If you pass, you will gain access to projects. Based on the quality of your work, you will continue to receive projects regularly. We find our most successful candidates work between 5-20 hours per week, up to 40 hours. Benefits: This is a full-time or...

Full job description We are seeking a skilled Part-Time React Developer to join our innovative tech startup. The ideal candidate will have strong experience building Progressive Web Applications (PWAs) and mobile web apps. This role involves designing, coding, and maintaining modern web applications while ensuring optimal performance across mobile devices. You will work with cutting-edge technologies and contribute creative ideas to exciting projects. Duties Develop and maintain Progressive Web Applications using React and TypeScript. Build responsive, mobile-first user interfaces with modern CSS frameworks. Integrate with REST APIs and third-party services as required. Implement service workers and offline functionality for PWA capabilities. Collaborate with the team to define, design, and ship new features. Write clean, scalable code and participate in code reviews. Optimise applications for performance on mobile devices and tablets....

Full job description We are seeking a skilled Part-Time React Developer to join our innovative tech startup. The ideal candidate will have strong experience building Progressive Web Applications (PWAs) and mobile web apps. This role involves designing, coding, and maintaining modern web applications while ensuring optimal performance across mobile devices. You will work with cutting-edge technologies and contribute creative ideas to exciting projects. Duties Develop and maintain Progressive Web Applications using React and TypeScript. Build responsive, mobile-first user interfaces with modern CSS frameworks. Integrate with REST APIs and third-party services as required. Implement service workers and offline functionality for PWA capabilities. Collaborate with the team to define, design, and ship new features. Write clean, scalable code and participate in code reviews. Optimise applications for performance on mobile devices and tablets....

About Fliprly Fliprly is the world’s first and only mobile app dedicated to buying and selling domains, websites, mobile apps, and other digital assets. Our iOS app and web platform are live, and we’re now ready to expand our reach with a robust Android app. Join us on this exciting journey to revolutionize the digital asset marketplace! What We’re Looking For We’re seeking a skilled Android Developer (freelancer or agency) to build the Android version of Fliprly from scratch. You’ll work closely with our existing team and leverage our iOS/web apps as references for functionality and design consistency. Responsibilities Build a high-performance Android app using Java. Translate our iOS design and features into the Android ecosystem. Integrate APIs and backend services (already available). Ensure a smooth, responsive, and bug-free user experience. Requirements Proven experience building Android apps (at least 4 solid live apps). Proficient in...

About Fliprly Fliprly is the world’s first and only mobile app dedicated to buying and selling domains, websites, mobile apps, and other digital assets. Our iOS app and web platform are live, and we’re now ready to expand our reach with a robust Android app. Join us on this exciting journey to revolutionize the digital asset marketplace! What We’re Looking For We’re seeking a skilled Android Developer (freelancer or agency) to build the Android version of Fliprly from scratch. You’ll work closely with our existing team and leverage our iOS/web apps as references for functionality and design consistency. Responsibilities Build a high-performance Android app using Java. Translate our iOS design and features into the Android ecosystem. Integrate APIs and backend services (already available). Ensure a smooth, responsive, and bug-free user experience. Requirements Proven experience building Android apps (at least 4 solid live apps). Proficient in...

About Unily Unily partners with the world’s largest and most complex enterprises to power Organizational Velocity through digital Employee Experience transformation. Iconic brands, including Estée Lauder Companies, CVS Health, and British Airways, use Unily’s market-leading Employee Experience platform to improve productivity, streamline communication, and foster a highly connected workplace.   Unily is the only triple leader recognized by all three of the major analysts. Unily is recognized as a Leader in the 2024 Gartner® Magic Quadrant™ for Intranet Packaged Solutions, the 2024 Forrester Wave™: Intranet Platforms, and the IDC MarketScape: Worldwide Experience-Centric Intelligent Digital Workspaces 2024. With these accolades, we continue to grow and expand our employee community with people who are passionate about joining us on this exciting journey.   Job Purpose   As we continue to expand our market...

6 Month Contract - Outside IR35   About Us: As part of our exciting growth journey, we’re expanding our Mobile Engineering team and are on the lookout for a talented Android Contract Engineer to join us on a hybrid basis at our London office.   This is a rare chance to work on high impact greenfield products for some of the biggest and most iconic sports brands in the world. You’ll be at the forefront of building modern, scalable apps from the ground up, helping shape the future of fan engagement across global sport.   As a contractor, you’ll bring deep technical expertise and strong delivery focus. Contributing high-quality code, collaborating closely with our in-house teams, and helping us hit key milestones.   You’ll be embedded in a passionate, cross-functional team and supported to do your best work while working on fast-moving, purpose-driven projects that reach millions of fans worldwide....

6 Month Contract - Outside IR35   About Us: As part of our exciting growth journey, we’re expanding our Mobile Engineering team and are on the lookout for a talented iOS Contract Engineer to join us on a hybrid basis at our London office.   This is a rare chance to work on high impact greenfield products for some of the biggest and most iconic sports brands in the world. You’ll be at the forefront of building modern, scalable apps from the ground up, helping shape the future of fan engagement across global sport.   As a contractor, you’ll bring deep technical expertise and strong delivery focus. Contributing high-quality code, collaborating closely with our in-house teams, and helping us hit key milestones.   You’ll be embedded in a passionate, cross-functional team and supported to do your best work while working on fast-moving, purpose-driven projects that reach millions of fans worldwide....

About Fliprly Fliprly is the world’s first and only mobile app dedicated to buying and selling domains, websites, mobile apps, and other digital assets. Our iOS app and web platform are live, and we’re now ready to expand our reach with a robust Android app. Join us on this exciting journey to revolutionize the digital asset marketplace! What We’re Looking For We’re seeking a skilled Android Developer (freelancer or agency) to build the Android version of Fliprly from scratch. You’ll work closely with our existing team and leverage our iOS/web apps as references for functionality and design consistency. Responsibilities Build a high-performance Android app using Java. Translate our iOS design and features into the Android ecosystem. Integrate APIs and backend services (already available). Ensure a smooth, responsive, and bug-free user experience. Requirements Proven experience building Android apps...

6 Month Contract - Outside IR35   About Us: As part of our exciting growth journey, we’re expanding our Mobile Engineering team and are on the lookout for a talented Android Contract Engineer to join us on a hybrid basis at our London office.   This is a rare chance to work on high impact greenfield products for some of the biggest and most iconic sports brands in the world. You’ll be at the forefront of building modern, scalable apps from the ground up, helping shape the future of fan engagement across global sport.   As a contractor, you’ll bring deep technical expertise and strong delivery focus. Contributing high-quality code, collaborating closely with our in-house teams, and helping us hit key milestones.   You’ll be embedded in a passionate, cross-functional team and supported to do your best work while working on fast-moving, purpose-driven projects that reach millions of fans worldwide....

6 Month Contract - Outside IR35   About Us: As part of our exciting growth journey, we’re expanding our Mobile Engineering team and are on the lookout for a talented iOS Contract Engineer to join us on a hybrid basis at our London office.   This is a rare chance to work on high impact greenfield products for some of the biggest and most iconic sports brands in the world. You’ll be at the forefront of building modern, scalable apps from the ground up, helping shape the future of fan engagement across global sport.   As a contractor, you’ll bring deep technical expertise and strong delivery focus. Contributing high-quality code, collaborating closely with our in-house teams, and helping us hit key milestones.   You’ll be embedded in a passionate, cross-functional team and supported to do your best work while working on fast-moving, purpose-driven projects that reach millions of fans worldwide....

About Us As a leading group of companies, the ECA International Group stands as a global frontrunner in simplifying international global mobility. Our collective vision is to make a positive impact by delivering exceptional tech products and services to our prestigious list of large enterprise clients. Our global presence across the UK, EU, Hong Kong, Australia, and the US offers our team a world of opportunities, and our commitment to innovation ensures that you will be at the leading edge of your field. We love to invest in our people’s success and development pathways, creating a diverse and inclusive community where your unique talents shine. Your work here has a global impact, and we prioritise work-life balance, offering flexibility to enable you to perform your best. Join us to experience a rewarding career where your potential is celebrated, and your journey to excellence begins.   About the Role We are on the lookout for a talented and...

Role: Data & Migration Workstream Lead (3-6 Month Contract) Location: London (Oxford Circus) Hybrid: 1-2 days per week in the office About Monument Technology Limited In building its core UK banking business, Monument has developed an open, scalable, cloud native and world-leading banking technology platform, the third pillar of the Banks’ strategy, which has allowed it to make significant inroads fast into the asset-rich, time-poor, and under-served mass-affluent market. The platform was designed from the start to be modular, flexible and extendable into other banking products and channels which also makes it easy to power other banks and to travel globally. Monument has received significant inbound interest from local and legacy players worldwide to licence its technology on a “Software-as-a-Service” (SaaS) basis and has established a Subsidiary business, Monument Technology Limited to take advantage of the opportunity and to unlock the value in our...

Job Description: As a Senior Mobile Automation Test Engineer, you will be responsible for driving our mobile testing strategy and ensuring the quality and reliability of mobile applications. This is a key role, requiring expertise in mobile UI automation, integration testing, and regression testing, with a focus on native mobile frameworks. Key Responsibilities: Develop and maintain mobile test automation frameworks using XCUITest (iOS) and Espresso (Android). Drive testing strategy for mobile applications, including manual, automation, and regression testing. Collaborate with cross-functional teams (Product, Engineering, Design) to ensure test coverage and functionality. Perform non-functional testing including localization, performance (UI and network), and snapshot testing for design validation. Debug complex issues using tools like Charles Proxy, Splunk, and logcat. Integrate automated tests into CI/CD pipelines using Jenkins, GitLab CI, or similar...