20 of 20 Contract Mobile App Jobs in London

Title: Freelance UI Designer, Mobile App Refresh Start: Monday 3rd August Length: 20 days, with potential to extend Work set-up: Hybrid, one day a week in the office Client: Global telecoms brand Contract: Outside IR35, Ltd or Umbrella only, no Sole Trader Location: Paddington, London Working … days a week Career level: Midweight to Senior Rate: £500 a day Brief A global telecoms brand is refreshing its mobile app and needs a freelance UI designer to help ship it. This is hands-on, production-focused work for a designer who has come up inside ...

Therefore they require an immediately available Digital Project Manager who ideally has worked on search engine or browser focused e-commerce & mobile app transformation. Wider E-commerce and mobile app delivery experience within the right sector would also work. Excellent stakeholder and vendor management … also required. Experience: - Experienced and credible Digital Project Manager - E-Commerce and Mobile App delivery experience - Any exposure to search engine or web browser related projects would be highly beneficial - Must have worked within the Retail of FMCG sector - Excellent stakeholder management - Happy to be on site ...

digital project. This role is distinct from traditional motion graphics, video, or social animation positions. The emphasis is on motion within digital products and app experiences — including UI transitions, interaction patterns, loading states, navigation, scrolling, and underlying motion principles. The ideal candidate will demonstrate strong experience in product … motion or interaction design, preferably within app-based, mobile, technology, or digital product environments. You will be confident presenting your work and articulating how your motion and interaction decisions have been implemented in production. Key Responsibilities: - Designing product-led motion and interaction experiences - Creating UI elements ...

delivery Experience of working on: Mobile apps Consumer-facing products Regulated environments (e.g. financial services) Additional Nice-to-Haves Mobile app delivery experience. Knowledge of: Integrations Digital marketing App release cycles Banking or financial services experience viewed as potentially transferable. ...

experience of best practice in both manual and automated testing. Experience of testing differing types of applications and scenarios, e.g. web, data and mobile applications. Knowledge of Azure Data Factory. Medium to strong SQL skills (understanding and writing). Knowledge of data models and dimensional models, together with ...

data, across the spectrum of digital channels on a some of their critical customer journeys. You'll be working with cross functional mobile and web teams to help improve the overall user experience by using Google/Adobe/Amplitude and SQL Responsibilities: Acting as a trusted partner … implementation Provide tag specifications for additional tracking to ensure stakeholders' reporting and decision-making requirements are met Work with web/mobile app developers to ensure tag specifications are implemented as specified Provide support to the wider business on the use of Analytics toolset Respond ...

React Native Engineer/React Native Developer/Senior React Native Developer/Senior Mobile Developer - React Native We've partnered with well known FinTech who are on a complex transformation programme across their mobile apps … platform and entire technology stack. They want to improve the functionality of a couple of their core products on their mobile app click apply for full job details ...

Objective-C. The role involves working closely with Product, Design, Backend, QA, and DevOps teams to deliver new features, resolve issues, and ensure overall app performance, quality, and security. Candidates should be comfortable managing their own workload, contributing to code reviews and architecture discussions, and keeping up to date ...

Objective-C. The role involves working closely with Product, Design, Backend, QA, and DevOps teams to deliver new features, resolve issues, and ensure overall app performance, quality, and security. Candidates should be comfortable managing their own workload, contributing to code reviews and architecture discussions, and keeping up to date ...

Senior Mobile QA Engineer (iOS & Android) £350 to £400 per day | Outside IR35 | Initial 6-Month Contract | Hybrid (Stratford, London) | Immediate Start Available Our trusted partner within the Ed-Tech sector, employing over 10,000 people across 100 countries and supporting more than 600 million users globally … seeking an experienced Senior Mobile QA Engineer to join a high-profile product engineering team developing innovative mobile learning applications. This role is ideal for a QA professional with extensive experience testing native and cross-platform mobile applications across iOS and Android environments, coupled ...

client developers and other backend developers. Ability to work with different teams and provide mentorship to junior developers Experience with developing backend for mobile apps. Desired Experience with C# and Unity engine. Experience with Gradle build systems. Experience using Jenkins or other CI systems for automation. Experience with ...

Role: Mobile iOS Developer Duration: 12 Months Start Date: ASAP Location: London/Remote Rate: £477.57 per day We're currently seeking an experienced Mobile iOS Developer to join a high-performing team on an initial 12-month contract. This is an excellent opportunity … developer with strong Swift and/or Objective-C expertise to work on enterprise-scale mobile applications, delivering new features and enhancements used by a large customer base. The Role As part of a collaborative Agile environment, you'll work closely with Product Managers, Designers, Backend Engineers ...

testing. Validate merchant onboarding journeys, our Accept application flows, payment processing, settlements, and terminal management capabilities. Execute testing across web, mobile (iOS & Android), API, and backend systems. Prepare detailed test plans, test scenarios, test cases, and test execution reports. Perform API testing and integration testing across internal … Retrospectives. Skills & Technologies Testing & Quality Assurance Functional Testing System Integration Testing (SIT) User Acceptance Testing (UAT) End-to-End Testing Regression Testing Mobile Application Testing API Testing Production Verification/FOV Testing Defect Management & Root Cause Analysis Test Planning & Test Execution Automation & Tools Selenium Playwright (essential) Postman REST ...

React Native Engineer/React Native Developer/Senior React Native Developer/Senior Mobile Developer - React Native We've partnered with well known FinTech who are on a complex transformation programme across their mobile apps, web platform and entire technology stack. They want to improve … functionality of a couple of their core products on their mobile app. So we are looking for experienced React Native Developer to join this major digital transformation programme. You'll play a key role in enhancing and modernising mobile applications across iOS and Android , delivering ...

month contract Rate: Up to £420/day Inside IR35 Overview We are seeking an experienced iOS Engineer to join a high-performing mobile engineering team delivering enterprise-scale digital products used by millions of customers globally. This role offers the opportunity to work on modern, customer-facing … mobile applications within a collaborative Agile environment. The successful candidate will contribute to the development of scalable, high-quality iOS applications while working closely with product, design, QA, and engineering teams. Key Responsibilities Design, develop, and enhance native iOS applications using modern development practices Collaborate with cross-functional ...

ground running, work independently, and deliver high-quality features quickly. What you'll be doing Building and improving features for an Android fitness app using React Native. Working within an Expo-based codebase. Collaborating remotely with the product and engineering team to deliver outcomes quickly. Using Claude, agentic workflows … What we're looking for Strong commercial experience as a React Native Engineer. Extensive hands-on experience with Expo. Proven experience building Android mobile apps. Familiarity with Claude, agentic development approaches, and AI-assisted engineering workflows. Ability to work independently in a fully remote contract role. Comfortable delivering ...

Project Manager - Business Banking Digital & Mobile Banking Implementation Location: Harrow/Hybrid Contract: 12-month Fixed-Term Contract Start Date: August/September 2026 Salary: Up to £80,000 per annum Reporting to: Head of Digital & New Initiatives About the Role We are seeking an experienced Project Manager … core banking system. Define integration test coverage with vendors and agree clear ownership for defect triage and resolution. Proactively manage external dependencies, including Apple App Store and Google Play review cycles, as part of the critical path. Vendor & Systems Integrator Management Act as the Bank's principal delivery counterpart ...

currently working with a Tier 1 Investment Bank who are actively seeking a Senior Designer to develop and maintain a business-critical mobile application. What you'll need to succeed : Expert Mobile Motion Design experience, ideally within financial services or a highly regulated environment. Strong experience ...

associated authentication journeys. Review and assure API designs, data flows, integration components and system dependencies. Support the design of mobile and in-app webview customer experiences. Produce architecture artefacts, solution options, design decisions and technical roadmaps. Coordinate suppliers, delivery partners and senior stakeholders to achieve alignment across … enterprise APIs, integration patterns and middleware technologies. Experience with SSO, customer identity, authentication and federation standards. Experience designing mobile applications and in-app webview journeys. Strong senior stakeholder and supplier management experience within complex multi-vendor environments. ...

with application delivery through Intune. Understanding of Entra ID group and how they are used to control application deployments, policies and access within Intune. App Protection Policies (MAM) - knowledge of Microsoft Intune security controls, including application protection policies, mobile application management and securing corporate data on managed ...