101 to 125 of 152 Mobile App Jobs in Central London

a skilled and enthusiastic Penetration Tester to join its growing team. Suitable candidates will have the following: Proven history in the delivery of penetration testing across web applications, mobile applications and infrastructure A solid understanding of programming (ideally in Python) Good understanding of networking concepts Knowledge or experience of security build reviews for all common operating systems (e.g. More ❯

a skilled and enthusiastic Penetration Tester to join its growing team. Suitable candidates will have the following: Proven history in the delivery of penetration testing across web applications, mobile applications and infrastructure A solid understanding of programming (ideally in Python) Good understanding of networking concepts Knowledge or experience of security build reviews for all common operating systems (e.g. More ❯

a skilled and enthusiastic Penetration Tester to join its growing team. Suitable candidates will have the following: Proven history in the delivery of penetration testing across web applications, mobile applications and infrastructure A solid understanding of programming (ideally in Python) Good understanding of networking concepts Knowledge or experience of security build reviews for all common operating systems (e.g. More ❯

a skilled and enthusiastic Penetration Tester to join its growing team. Suitable candidates will have the following: Proven history in the delivery of penetration testing across web applications, mobile applications and infrastructure A solid understanding of programming (ideally in Python) Good understanding of networking concepts Knowledge or experience of security build reviews for all common operating systems (e.g. More ❯

Lead Mobile Developer (Flutter) 📍 Remote-first (UK-based) 💰 £65,000 – £85,000 DOE We’re a fast-growing tech company building digital products that power some of the UK’s largest contractors. Our mobile apps are used every day on site — and we’re looking for a Lead Mobile Developer to help us take … iOS and Android Shape architecture, best practices, and CI/CD pipelines Mentor developers and drive a positive engineering culture Work closely with product & backend teams to deliver mobile-first features What we’re looking … for 5+ years in mobile dev, 3+ years with Flutter Strong Dart, async programming, and architecture patterns (BLoC, Clean, MVC) Experience with APIs, push notifications, Git, and app store release flows Great communicator and leader who can align tech with business goals What we offer ✅ Remote-first & flexible working ✅ Competitive salary (£65–85k DOE) ✅ Autonomy to shape 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 ❯

the starting point for this position; the exact responsibilities will develop over time. Backend Development: Confident development and engineering of scalable, cloud-based solutions accessible via web and mobile apps. Scalability and Connectivity: building systems designed to handle sudden peaks in concurrent users trying to read and write data simultaneously; and to accommodate for poor network connectivity. Coding … Ability to work within project timelines, proactively communicate any delays and contribute to task re-prioritisation to keep things on track Experience in developing websites, web applications and mobile apps, with a focus on user-centric design Familiarity with DevOps practices, CI/CD pipelines and QA processes Application process We are looking for team members that are More ❯

the starting point for this position; the exact responsibilities will develop over time. Backend Development: Confident development and engineering of scalable, cloud-based solutions accessible via web and mobile apps. Scalability and Connectivity: building systems designed to handle sudden peaks in concurrent users trying to read and write data simultaneously; and to accommodate for poor network connectivity. Coding … Ability to work within project timelines, proactively communicate any delays and contribute to task re-prioritisation to keep things on track Experience in developing websites, web applications and mobile apps, with a focus on user-centric design Familiarity with DevOps practices, CI/CD pipelines and QA processes Application process We are looking for team members that are More ❯

Provide Thought Leadership on iOS platform ● Analyse software requirements and map them to iOS architecture or extend the architecture in order to support the new requirements. ● Responsible for designing app architecture and integration design to various external systems ● Document and communicate architectural decisions and designs ● Responsible for choosing the needed technology stack based on the functional, non-functional requirements … and based on other factors like client drivers, environment and feasibility ● Provide direction, guidance, and expert advice to the App development and delivery teams ● Develop prototypes, proof of concepts, and feasibility analysis. ● Interact with 3rd party providers to integrate additional services into the platform ● Cooperate with project and product management to scope, estimate, and plan new efforts ● Follow best … other behaviour patterns ● Deep understanding of Object-Oriented Programming, data structures, and design patterns Proficiency ● Have published at least 5 iOS apps on Play Store ● Must possess knowledge on App Security and Cryptography ● Good exposure to API Caching and defining NFRs (Non-Functional Requirements) for mobile application ● Must have worked on Core Data, Offline Sync, Caching, Local More ❯

Provide Thought Leadership on iOS platform ● Analyse software requirements and map them to iOS architecture or extend the architecture in order to support the new requirements. ● Responsible for designing app architecture and integration design to various external systems ● Document and communicate architectural decisions and designs ● Responsible for choosing the needed technology stack based on the functional, non-functional requirements … and based on other factors like client drivers, environment and feasibility ● Provide direction, guidance, and expert advice to the App development and delivery teams ● Develop prototypes, proof of concepts, and feasibility analysis. ● Interact with 3rd party providers to integrate additional services into the platform ● Cooperate with project and product management to scope, estimate, and plan new efforts ● Follow best … other behaviour patterns ● Deep understanding of Object-Oriented Programming, data structures, and design patterns Proficiency ● Have published at least 5 iOS apps on Play Store ● Must possess knowledge on App Security and Cryptography ● Good exposure to API Caching and defining NFRs (Non-Functional Requirements) for mobile application ● Must have worked on Core Data, Offline Sync, Caching, Local More ❯

Provide Thought Leadership on iOS platform ● Analyse software requirements and map them to iOS architecture or extend the architecture in order to support the new requirements. ● Responsible for designing app architecture and integration design to various external systems ● Document and communicate architectural decisions and designs ● Responsible for choosing the needed technology stack based on the functional, non-functional requirements … and based on other factors like client drivers, environment and feasibility ● Provide direction, guidance, and expert advice to the App development and delivery teams ● Develop prototypes, proof of concepts, and feasibility analysis. ● Interact with 3rd party providers to integrate additional services into the platform ● Cooperate with project and product management to scope, estimate, and plan new efforts ● Follow best … other behaviour patterns ● Deep understanding of Object-Oriented Programming, data structures, and design patterns Proficiency ● Have published at least 5 iOS apps on Play Store ● Must possess knowledge on App Security and Cryptography ● Good exposure to API Caching and defining NFRs (Non-Functional Requirements) for mobile application ● Must have worked on Core Data, Offline Sync, Caching, Local 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 ❯

of the world’s most advanced smart-building platforms, powered by digital twins, real-time analytics, and seamless third-party integrations They’re now looking for a Lead Mobile Engineer with deep Flutter expertise to take ownership of their client-facing apps. This is a hands-on technical leadership role, you’ll set the technical direction, mentor a … small team, and work directly with senior leadership to deliver the roadmap. What you’ll be doing: Own the mobile roadmap & architecture (Flutter, Swift, Java) Lead from a technical perspective: design, code, review, and mentor Integrate with complex third-party SDKs (BLE, mobile access, indoor wayfinding) Drive engineering excellence … in testing, performance, monitoring, and CI/CD Collaborate closely with back-end and product teams to deliver new features What we’re looking for: 3+ years of Flutter app development in production environments Strong background in iOS/Android (Swift/Java) Experience with state management, testing frameworks, monitoring tools (Crashlytics, Sentry, etc.) Ability to guide technical decisions More ❯

of the world’s most advanced smart-building platforms, powered by digital twins, real-time analytics, and seamless third-party integrations They’re now looking for a Lead Mobile Engineer with deep Flutter expertise to take ownership of their client-facing apps. This is a hands-on technical leadership role, you’ll set the technical direction, mentor a … small team, and work directly with senior leadership to deliver the roadmap. What you’ll be doing: Own the mobile roadmap & architecture (Flutter, Swift, Java) Lead from a technical perspective: design, code, review, and mentor Integrate with complex third-party SDKs (BLE, mobile access, indoor wayfinding) Drive engineering excellence … in testing, performance, monitoring, and CI/CD Collaborate closely with back-end and product teams to deliver new features What we’re looking for: 3+ years of Flutter app development in production environments Strong background in iOS/Android (Swift/Java) Experience with state management, testing frameworks, monitoring tools (Crashlytics, Sentry, etc.) Ability to guide technical decisions More ❯

Here at Venator, we are working with an eCommerce company who have UK's biggest technology platform - they have a live mobile application as well as a web based application- the company is now looking to grow! Please Note- this is a hybriod role but will require you to be in the office (London) 4 days per week … us in curating a codebase to be proud of, driving for quality, maintainability and testability The candidate You have built great products for the web and/or mobile You have analysed business problems then scoped and built technical solutions to solve them You can quickly become productive using our backend or frontend technologies, or both You’re … are: Python on the server side, using Django as a web framework, and Django Rest Framework for our API Angular and TypeScript on the client side for our mobile apps and booking flow Next.js and React for parts of our marketing website Ionic for hybrid and progressive mobile apps PostgreSQL for our database, using some of More ❯

Here at Venator, we are working with an eCommerce company who have UK's biggest technology platform - they have a live mobile application as well as a web based application- the company is now looking to grow! Please Note- this is a hybriod role but will require you to be in the office (London) 4 days per week … us in curating a codebase to be proud of, driving for quality, maintainability and testability The candidate You have built great products for the web and/or mobile You have analysed business problems then scoped and built technical solutions to solve them You can quickly become productive using our backend or frontend technologies, or both You’re … are: Python on the server side, using Django as a web framework, and Django Rest Framework for our API Angular and TypeScript on the client side for our mobile apps and booking flow Next.js and React for parts of our marketing website Ionic for hybrid and progressive mobile apps PostgreSQL for our database, using some of More ❯

Automation Test Engineer (Selenium Java & Python) London, UK (Hybrid work model) We are seeking a highly skilled and proactive Senior Quality Analyst with strong expertise in web and mobile application testing, automation frameworks, and API testing. The ideal candidate will have hands-on experience with Selenium (Python), Postman, SQL, and a solid understanding of quality assurance best practices. … Exposure to fund accounting, fund administration, or wealth management domains is a strong plus. Key Responsibilities: Lead and execute end-to-end testing of web and mobile applications. Design, develop, and maintain automation test scripts using Selenium with Python. Perform API testing using tools like Postman, including validation of request/response payloads, headers, and authentication. Write and … of QA deliverables in Agile/Scrum environments. Provide QA metrics and status reports to stakeholders. Required Skills: Strong experience in manual and automation testing of web and mobile applications. Proficiency in Selenium with Python for automation. Solid understanding of API testing using Postman or similar tools. Strong command over SQL for data validation and backend testing. Experience More ❯

Automation Test Engineer (Selenium Java & Python) London, UK (Hybrid work model) We are seeking a highly skilled and proactive Senior Quality Analyst with strong expertise in web and mobile application testing, automation frameworks, and API testing. The ideal candidate will have hands-on experience with Selenium (Python), Postman, SQL, and a solid understanding of quality assurance best practices. … Exposure to fund accounting, fund administration, or wealth management domains is a strong plus. Key Responsibilities: Lead and execute end-to-end testing of web and mobile applications. Design, develop, and maintain automation test scripts using Selenium with Python. Perform API testing using tools like Postman, including validation of request/response payloads, headers, and authentication. Write and … of QA deliverables in Agile/Scrum environments. Provide QA metrics and status reports to stakeholders. Required Skills: Strong experience in manual and automation testing of web and mobile applications. Proficiency in Selenium with Python for automation. Solid understanding of API testing using Postman or similar tools. Strong command over SQL for data validation and backend testing. Experience More ❯

s degree in Computer Science, Engineering, or a related field. 2 years+ experience as a .Net Developer or similar role. Strong proficiency in the .Net Stack. Experience developing mobile applications in Xamarin/.Net MAUI/Flutter. Experience with software development methodologies such as Agile or Scrum. Excellent problem-solving skills and attention to detail. Strong communication and … working from home and 3 days in our stylish, modern and collaborative office close to East Croydon Station Company pension matching and bonus We offer Wagestream - a money management app that gives you access to a percentage of your pay as you earn it Being part of more! We are part of a group who work closely with Savers More ❯

Masters degree in Computer Science, Engineering, or a related field. 2 years+ experience as a .Net Developer or similar role. Strong proficiency in the .Net Stack. Experience developing mobile applications in Xamarin/.Net MAUI/Flutter. Experience with software development methodologies such as Agile or Scrum. Excellent problem-solving skills and attention to detail. Strong communication and … working from home and 3 days in our stylish, modern and collaborative office close to East Croydon Station Company pension matching and bonus We offer Wagestream - a money management app that gives you access to a percentage of your pay as you earn it Being part of more! We are part of a group who work closely with Savers More ❯

s about creating a sleek, user-first mobile experience that makes traditional telecoms look like dial-up. You’ll be leading the development of a cross-platform app, built with a clean, scalable architecture and a product that’s already live and growing fast. You’ll be hands-on with everything from UI polish to performance tuning … collaborates. We move fast, iterate constantly, and keep meetings to a minimum. You’ll be trusted to lead features end-to-end, mentor other devs, and help scale the app as it expands across Europe. You’ll work closely with product and design to ship experiences that feel effortless but are anything but simple under the hood. This isn … t just another app job. It’s a chance to help build the future of mobile from the ground up. The mission is to make connectivity as seamless and modern as the apps we use every day—and the team is backed by experienced founders and operators who know how to build and scale consumer tech. If More ❯

s about creating a sleek, user-first mobile experience that makes traditional telecoms look like dial-up. You’ll be leading the development of a cross-platform app, built with a clean, scalable architecture and a product that’s already live and growing fast. You’ll be hands-on with everything from UI polish to performance tuning … collaborates. We move fast, iterate constantly, and keep meetings to a minimum. You’ll be trusted to lead features end-to-end, mentor other devs, and help scale the app as it expands across Europe. You’ll work closely with product and design to ship experiences that feel effortless but are anything but simple under the hood. This isn … t just another app job. It’s a chance to help build the future of mobile from the ground up. The mission is to make connectivity as seamless and modern as the apps we use every day—and the team is backed by experienced founders and operators who know how to build and scale consumer tech. If More ❯

s about creating a sleek, user-first mobile experience that makes traditional telecoms look like dial-up. You’ll be leading the development of a cross-platform app, built with a clean, scalable architecture and a product that’s already live and growing fast. You’ll be hands-on with everything from UI polish to performance tuning … collaborates. We move fast, iterate constantly, and keep meetings to a minimum. You’ll be trusted to lead features end-to-end, mentor other devs, and help scale the app as it expands across Europe. You’ll work closely with product and design to ship experiences that feel effortless but are anything but simple under the hood. This isn … t just another app job. It’s a chance to help build the future of mobile from the ground up. The mission is to make connectivity as seamless and modern as the apps we use every day—and the team is backed by experienced founders and operators who know how to build and scale consumer tech. If 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. Im working with a fast-scaling Consumer Tech/Tech-for-Good brand who have built the worlds 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 MidSenior 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 apps evolution, leading on new feature delivery, and driving forward technical excellence. Both teams love clean, native, modern More ❯

About Us We craft cutting-edge mobile experiences that captivate users and deliver meaningful impact. As our team continues to expand, were looking for a detail-oriented Mobile QA Tester to help ensure our iOS and Android apps meet the highest standards of quality and performance. What Youll Be Doing Develop and maintain manual and automated … test plans, cases, and scripts for mobile platforms (iOS and Android). Log and track bugs with clear reproduction steps, prioritization, and supporting visuals (screenshots or videos). Collaborate closely with product managers, designers, and engineers to understand user journeys and technical requirements. Conduct regression, compatibility, performance, and exploratory testing across various devices, OS versions, and screen sizes. … release planning and provide input on potential risks. Support test automation initiatives and assist with managing test environments and data. What Were Looking For Hands-on experience testing mobile apps on iOS and/or Android (using real devices or emulators). Solid grasp of mobile QA practices including functional, usability, compatibility, and performance testing. Familiarity More ❯