1 to 25 of 64 Mobile First Jobs in London

them via the platform! Good luck! 🙂 About the Company Certonymity is building the next generation of secure communication. Our mission is to make email encryption simple, accessible, and privacy-first — combining advanced post quantum secure cryptography with real-world identity verification. Our first product, C.Email, allows users to send and receive end-to-end encrypted emails without relying … team based across the UK and France. Operating independently allows us to move quickly, innovate freely, and stay focused on our mission to build cutting-edge cryptographic, blockchain, and mobile-first privacy technology. About the Role We’re looking for a Senior React Native Engineer to play a key role in building, improving, and scaling our encrypted email … Lead development of new features from concept to release, owning them end-to-end — from design discussions and prototyping through to testing and deployment. Develop and enhance the C.Email mobile app using React Native (Expo + CNG). Improve app stability and performance; resolve bugs and UI issues. Implement cryptography improvements for performance and integration. Write modular, testable, maintainable More ❯

them via the platform! Good luck! 🙂 About the Company Certonymity is building the next generation of secure communication. Our mission is to make email encryption simple, accessible, and privacy-first — combining advanced post quantum secure cryptography with real-world identity verification. Our first product, C.Email, allows users to send and receive end-to-end encrypted emails without relying … team based across the UK and France. Operating independently allows us to move quickly, innovate freely, and stay focused on our mission to build cutting-edge cryptographic, blockchain, and mobile-first privacy technology. About the Role We’re looking for a Senior React Native Engineer to play a key role in building, improving, and scaling our encrypted email … Lead development of new features from concept to release, owning them end-to-end — from design discussions and prototyping through to testing and deployment. Develop and enhance the C.Email mobile app using React Native (Expo + CNG). Improve app stability and performance; resolve bugs and UI issues. Implement cryptography improvements for performance and integration. Write modular, testable, maintainable More ❯

First Product Design hire 🚀 💰£50,000-£55,000 🏡Hybrid working Our client is a forward thinking, VC backed startup transforming the retail industry with an innovative solution that redefines customer engagement. Their product suite includes a mobile first web app, a client facing dashboard and supporting marketing platforms. They’re now looking for their first Product … user journeys and iterate quickly in a fast-paced startup environment. This is a great opportunity to take on more ownership and really make your mark as the companies first Product Designer! What are they looking for? 2-5 years of experience in UX/UI design for digital products, ideally in a startup or fast-paced environment Strong … portfolio showcasing UX and UI skills across web and mobile platforms Proficiency in Figma Comfortable working cross-functionally with engineers and stakeholders Excellent communication skills and attention to detail Experience with responsive and mobile-first design This role would suit someone early in their career with a pro-active attitude and passion for progressing their career in More ❯

First Product Design hire 🚀 💰£50,000-£55,000 🏡Hybrid working Our client is a forward thinking, VC backed startup transforming the retail industry with an innovative solution that redefines customer engagement. Their product suite includes a mobile first web app, a client facing dashboard and supporting marketing platforms. They’re now looking for their first Product … user journeys and iterate quickly in a fast-paced startup environment. This is a great opportunity to take on more ownership and really make your mark as the companies first Product Designer! What are they looking for? 2-5 years of experience in UX/UI design for digital products, ideally in a startup or fast-paced environment Strong … portfolio showcasing UX and UI skills across web and mobile platforms Proficiency in Figma Comfortable working cross-functionally with engineers and stakeholders Excellent communication skills and attention to detail Experience with responsive and mobile-first design This role would suit someone early in their career with a pro-active attitude and passion for progressing their career in More ❯

First Product Design hire 🚀 💰£50,000-£55,000 🏡Hybrid working Our client is a forward thinking, VC backed startup transforming the retail industry with an innovative solution that redefines customer engagement. Their product suite includes a mobile first web app, a client facing dashboard and supporting marketing platforms. They’re now looking for their first Product … user journeys and iterate quickly in a fast-paced startup environment. This is a great opportunity to take on more ownership and really make your mark as the companies first Product Designer! What are they looking for? 2-5 years of experience in UX/UI design for digital products, ideally in a startup or fast-paced environment Strong … portfolio showcasing UX and UI skills across web and mobile platforms Proficiency in Figma Comfortable working cross-functionally with engineers and stakeholders Excellent communication skills and attention to detail Experience with responsive and mobile-first design This role would suit someone early in their career with a pro-active attitude and passion for progressing their career in More ❯

First Product Design hire 🚀 💰£50,000-£55,000 🏡Hybrid working Our client is a forward thinking, VC backed startup transforming the retail industry with an innovative solution that redefines customer engagement. Their product suite includes a mobile first web app, a client facing dashboard and supporting marketing platforms. They’re now looking for their first Product … user journeys and iterate quickly in a fast-paced startup environment. This is a great opportunity to take on more ownership and really make your mark as the companies first Product Designer! What are they looking for? 2-5 years of experience in UX/UI design for digital products, ideally in a startup or fast-paced environment Strong … portfolio showcasing UX and UI skills across web and mobile platforms Proficiency in Figma Comfortable working cross-functionally with engineers and stakeholders Excellent communication skills and attention to detail Experience with responsive and mobile-first design This role would suit someone early in their career with a pro-active attitude and passion for progressing their career in More ❯

for landing pages, booking flows, and dashboards Prepare developer-ready files and support design handoff Use typography, colour, spacing, and hierarchy with confidence Think through navigation, information architecture, and mobile-first layouts Front-End Collaboration Build or support building responsive layouts with HTML/CSS Work with Tailwind, Bootstrap, or similar frameworks Read/modify simple JavaScript for …/CSS , responsive design, and modern layout techniques (Flexbox, Grid) Experience creating and evolving design systems Confident presenting design decisions to technical and non-technical stakeholders Solid understanding of mobile-first and accessibility fundamentals Able to debug and support front-end builds with a developer mindset Nice-to-Haves Experience with user testing , interviews, or internal user research More ❯

for landing pages, booking flows, and dashboards Prepare developer-ready files and support design handoff Use typography, colour, spacing, and hierarchy with confidence Think through navigation, information architecture, and mobile-first layouts 💻 Front-End Collaboration Build or support building responsive layouts with HTML/CSS Work with Tailwind, Bootstrap, or similar frameworks Read/modify simple JavaScript for …/CSS , responsive design, and modern layout techniques (Flexbox, Grid) Experience creating and evolving design systems Confident presenting design decisions to technical and non-technical stakeholders Solid understanding of mobile-first and accessibility fundamentals Able to debug and support front-end builds with a developer mindset Nice-to-Haves Experience with user testing , interviews, or internal user research More ❯

for landing pages, booking flows, and dashboards Prepare developer-ready files and support design handoff Use typography, colour, spacing, and hierarchy with confidence Think through navigation, information architecture, and mobile-first layouts 💻 Front-End Collaboration Build or support building responsive layouts with HTML/CSS Work with Tailwind, Bootstrap, or similar frameworks Read/modify simple JavaScript for …/CSS , responsive design, and modern layout techniques (Flexbox, Grid) Experience creating and evolving design systems Confident presenting design decisions to technical and non-technical stakeholders Solid understanding of mobile-first and accessibility fundamentals Able to debug and support front-end builds with a developer mindset Nice-to-Haves Experience with user testing , interviews, or internal user research More ❯

for landing pages, booking flows, and dashboards Prepare developer-ready files and support design handoff Use typography, colour, spacing, and hierarchy with confidence Think through navigation, information architecture, and mobile-first layouts 💻 Front-End Collaboration Build or support building responsive layouts with HTML/CSS Work with Tailwind, Bootstrap, or similar frameworks Read/modify simple JavaScript for …/CSS , responsive design, and modern layout techniques (Flexbox, Grid) Experience creating and evolving design systems Confident presenting design decisions to technical and non-technical stakeholders Solid understanding of mobile-first and accessibility fundamentals Able to debug and support front-end builds with a developer mindset Nice-to-Haves Experience with user testing , interviews, or internal user research More ❯

builds. You’ll shape the future of their website, ecommerce flow and digital design language to drive engagement and improve ecommerce conversion through user centric design. All with a mobile-first mindset. Specifically, you will: Lead UI design and development for their website across mobile and desktop to drive engagement, signups and ecommerce growth. Utilize a diverse … design tools and methodologies, including but not limited to Figma, wireframing, workflow diagramming, and prototyping. CMS site-building experience: design and publishing content and pages within a CMS (Storyblok) Mobile first designs are your bread and butter. You understand user flows, design psychology and an ability to wireframe and design solutions that drive engagement and ecommerce growth. Proven … streams. Self-motivated and capable of thriving in a fast-paced, startup-like environment. Portfolio: The client is interesting in seeing 4-6 recent pieces that showcase: Desktop and mobile website designs (ecommerce example highly desirable) Wireframing and prototype designs with a clear understanding of the customer funnel. Examples designing and building component libraries for multi-language websites with More ❯

builds. You’ll shape the future of their website, ecommerce flow and digital design language to drive engagement and improve ecommerce conversion through user centric design. All with a mobile-first mindset. Specifically, you will: Lead UI design and development for their website across mobile and desktop to drive engagement, signups and ecommerce growth. Utilize a diverse … design tools and methodologies, including but not limited to Figma, wireframing, workflow diagramming, and prototyping. CMS site-building experience: design and publishing content and pages within a CMS (Storyblok) Mobile first designs are your bread and butter. You understand user flows, design psychology and an ability to wireframe and design solutions that drive engagement and ecommerce growth. Proven … streams. Self-motivated and capable of thriving in a fast-paced, startup-like environment. Portfolio: The client is interesting in seeing 4-6 recent pieces that showcase: Desktop and mobile website designs (ecommerce example highly desirable) Wireframing and prototype designs with a clear understanding of the customer funnel. Examples designing and building component libraries for multi-language websites with More ❯

builds. You’ll shape the future of their website, ecommerce flow and digital design language to drive engagement and improve ecommerce conversion through user centric design. All with a mobile-first mindset. Specifically, you will: Lead UI design and development for their website across mobile and desktop to drive engagement, signups and ecommerce growth. Utilize a diverse … design tools and methodologies, including but not limited to Figma, wireframing, workflow diagramming, and prototyping. CMS site-building experience: design and publishing content and pages within a CMS (Storyblok) Mobile first designs are your bread and butter. You understand user flows, design psychology and an ability to wireframe and design solutions that drive engagement and ecommerce growth. Proven … streams. Self-motivated and capable of thriving in a fast-paced, startup-like environment. Portfolio: The client is interesting in seeing 4-6 recent pieces that showcase: Desktop and mobile website designs (ecommerce example highly desirable) Wireframing and prototype designs with a clear understanding of the customer funnel. Examples designing and building component libraries for multi-language websites with More ❯

builds. You’ll shape the future of their website, ecommerce flow and digital design language to drive engagement and improve ecommerce conversion through user centric design. All with a mobile-first mindset. Specifically, you will: Lead UI design and development for their website across mobile and desktop to drive engagement, signups and ecommerce growth. Utilize a diverse … design tools and methodologies, including but not limited to Figma, wireframing, workflow diagramming, and prototyping. CMS site-building experience: design and publishing content and pages within a CMS (Storyblok) Mobile first designs are your bread and butter. You understand user flows, design psychology and an ability to wireframe and design solutions that drive engagement and ecommerce growth. Proven … streams. Self-motivated and capable of thriving in a fast-paced, startup-like environment. Portfolio: The client is interesting in seeing 4-6 recent pieces that showcase: Desktop and mobile website designs (ecommerce example highly desirable) Wireframing and prototype designs with a clear understanding of the customer funnel. Examples designing and building component libraries for multi-language websites with 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 things to … for 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 tech direction & product strategy ✅ Build products that make a real impact every day Apply now 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 things to … for 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 tech direction & product strategy ✅ Build products that make a real impact every day Apply now More ❯

financial freedom. You will build our next generation Unified Client Experience (UCX) frontend that will streamline client journeys across a range of products and services, in both web and mobile domains. It's an opportunity to design, architect and build a modern frontend using latest technologies and best practices to transform our savings and investment platform. The UCX team … part of the future of investing. Shape it with us. What You'll Be Doing Building and deploying scalable, secure, and compliant software at pace. Integrating HL web and mobile apps with existing and new systems to deliver a seamless client experience across a range of products and services. Delivering value iteratively, always focused on customer outcomes and short … or Wealth Management . Deep expertise in React or React Native , with hands-on experience in secure API integration , authentication flows , and frontend architecture . Strong proficiency in native mobile development using Swift (iOS) and/or Kotlin (Android) - capable of guiding mobile-first initiatives and bridging web-mobile experiences. Skilled in writing clean, maintainable, and More ❯

teams to translate technical requirements into effective web solutions, maintaining scalability and reliability Develop and maintain modules, APIs, and integrations to optimise website functionality and performance Champion accessibility and mobile-first design principles across all projects, ensuring compliance with modern standards and best practices Drive innovation by researching emerging technologies and recommending improvements that enhance user experience and More ❯

s ecommerce platform and digital products, ensuring consistency and attention to detail. Translate customer needs and business goals into simple, elegant, and effective design solutions. Ensure all designs are mobile-first, accessible, and aligned with Liberty’s brand guidelines and visual identity. Participate in usability testing and customer research, helping to plan sessions, observe user behaviour, and apply More ❯

s ecommerce platform and digital products, ensuring consistency and attention to detail. Translate customer needs and business goals into simple, elegant, and effective design solutions. Ensure all designs are mobile-first, accessible, and aligned with Liberty’s brand guidelines and visual identity. Participate in usability testing and customer research, helping to plan sessions, observe user behaviour, and apply More ❯

s ecommerce platform and digital products, ensuring consistency and attention to detail. Translate customer needs and business goals into simple, elegant, and effective design solutions. Ensure all designs are mobile-first, accessible, and aligned with Liberty’s brand guidelines and visual identity. Participate in usability testing and customer research, helping to plan sessions, observe user behaviour, and apply More ❯

s ecommerce platform and digital products, ensuring consistency and attention to detail. Translate customer needs and business goals into simple, elegant, and effective design solutions. Ensure all designs are mobile-first, accessible, and aligned with Liberty’s brand guidelines and visual identity. Participate in usability testing and customer research, helping to plan sessions, observe user behaviour, and apply More ❯

Are you a highly skilled Java Developer with a passion for building scalable, high-performance financial systems? Do you enjoy working with cutting-edge technologies across backend, cloud, and mobile ecosystems? If so, this is a fantastic opportunity to join a growing FinTech organisation at the heart of digital transformation in financial services. Our client, an international financial technology … developing, and deploying next-generation financial applications. You will work on complex, high-availability systems built using Spring Boot , deployed on AWS EKS/Kubernetes , and integrated with modern mobile and analytics platforms. As part of a collaborative, Agile development team, you will be responsible for building robust microservices, managing data pipelines across PostgreSQL and Amazon Redshift , and delivering … performant, secure RESTful APIs used across web and mobile platforms. You'll work closely with iOS and Android engineers to ensure seamless end-to-end integration, supporting mobile-first financial products that reach thousands of users daily. To succeed, you'll need strong Java and Spring Boot experience, solid understanding of Kubernetes and AWS services, and hands More ❯

your work distributed to thousands of users at launch, and compound impact across multiple products, not just one. Role Description You’ll lead end-to-end product development for mobile-first apps: scoping, building, testing, shipping, and iterating across tight cycles. This is an early-stage, hands-on role with significant autonomy and responsibility to drive product development … paths. Build and integrate AI features (LLM/agent workflows, RAG/vector DB integration, eval hooks, cost/safety guardrails). Essential Requirements 3–6+ years building production mobile apps (React Native), with shipped apps. Strong React Native proficiency (Expo experience strongly preferred). Full-stack capability: backend in Python (FastAPI) and databases; API design; basic cloud infra … decisions Evidence of shipping quickly in small teams (portfolio/GitHub/TestFlight links). Desired Working deeply with Expo (EAS builds, OTA updates). CI/CD for mobile, App Store/TestFlight flows. Analytics, feature flagging, experimentation frameworks. Planning & execution in Linear (or similar). Tools & Stack Frontend (mobile): React Native (Expo). Frontend (web, when More ❯

your work distributed to thousands of users at launch, and compound impact across multiple products, not just one. Role Description You’ll lead end-to-end product development for mobile-first apps: scoping, building, testing, shipping, and iterating across tight cycles. This is an early-stage, hands-on role with significant autonomy and responsibility to drive product development … paths. Build and integrate AI features (LLM/agent workflows, RAG/vector DB integration, eval hooks, cost/safety guardrails). Essential Requirements 3–6+ years building production mobile apps (React Native), with shipped apps. Strong React Native proficiency (Expo experience strongly preferred). Full-stack capability: backend in Python (FastAPI) and databases; API design; basic cloud infra … decisions Evidence of shipping quickly in small teams (portfolio/GitHub/TestFlight links). Desired Working deeply with Expo (EAS builds, OTA updates). CI/CD for mobile, App Store/TestFlight flows. Analytics, feature flagging, experimentation frameworks. Planning & execution in Linear (or similar). Tools & Stack Frontend (mobile): React Native (Expo). Frontend (web, when More ❯