Mobile app developers in Gauteng | Gumtree Classifieds in Gauteng

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An established organisation within the financial services sector is seeking a Senior Mobile Developer (React Native) to join their software development team. The successful candidate will be responsible for developing and refining mobile and web applications, improving existing functionality, and contributing to architectural and performance enhancements.Youll collaborate closely with analysts and technical teams to interpret requirements, build wellâ??structured code, diagnose system issues, and ensure optimal application performance. This role requires a selfâ??driven, detailâ??oriented individual who can work effectively in both team and independent settings.Key Responsibilities:Build, test, and deploy mobile applications using React Native.Build and deploy web portals using React.js (TypeScript).Develop and enhance new and existing components.Work with analysts to refine requirements and translate them into technical solutions.Improve code quality through refactoring and bestâ??practice implementation.Create unit tests, integration tests, and technical documentation.Conduct rootâ??cause analysis and resolve system issues.Manage mobile app store deployments (iOS, Android, and Huawei).Perform functional testing and support quality testing phases.Integrate mobile applications with API services.Maintain application servers and support deployment processes.Job Experience and Skills Required:Education:Grade 12 / Matric.IT-related Degree/Diploma OR Matric with 5+ years relevant mobile development experience.Experience:Minimum 5 years mobile development experience in a professional environment.Strong experience integrating mobile apps with API services.Experience building backend API services using .NET Framework.Proficient in relational database design and development.Experience accessing device components (camera, geolocation, etc.).Familiarity with SDLC, Agile methodologies, and development standards.Technical Skills:React Native, JavaScript, and TypeScript.React Native best practices & mobile architecture patterns..NET / C#.NET (advantageous).RESTful APIs, XML, and JSON.SQL Server & relational databases.Mobile store deployment for iOS, Android, and Huawei.Google Services, Firebase, and Sentry.Azure DevOps (repos, CI pipelines, and release management). https://www.executiveplacements.com/Jobs/S/Senior-Mobile-Developer-React-Native-1271146-Job-Search-04-17-2026-00-00-00-AM.asp?sid=gumtree

Executive Placements

Mamelodi

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Overview Senior QA Engineer with strong experience in test automation and a focus on ensuring the quality and reliability of their mobile apps (React Native, iOS, Android, Harmony OS) and backend services (Rails, REST APIs, Sidekiq, PostgreSQL, Heroku/Digital Ocean). As part of an Agile Scrum team, you will work closely with Developers, Product Managers and DevOps to integrate quality into every stage of the development process. As the team grows, you will also play a key role in supporting and guiding Junior QA Engineers.Key Responsibilities:Test Automation & Quality StrategyDesign, develop and maintain automated test frameworks for mobile apps (React Native, iOS, Android, Harmony OS) and backend services (Rails, REST APIs).Build and extend test coverage for UI, API and mobile app workflows, ensuring strong automation for reliable releases.Integrate automated tests into CI/CD pipelines (GitHub Actions, Firebase Test Lab) to ensure efficient, repeatable testing.Explore and implement new testing tools and practices to improve automation and streamline testing processes. Hands-On QA ExecutionPerform automated and exploratory testing across mobile and backend systems, ensuring product stability, performance and scalability.Work closely with developers to ensure comprehensive test coverage for new features and functional requirements.Validate third-party service integrations like Twilio, SendGrid, Huawei Push Kit and Google APIs.Track, document, prioritize and reproduce defects, ensuring timely resolution. Team CollaborationWork within an Agile Scrum team, collaborating with developers, product managers and other stakeholders to ensure quality throughout the development lifecycle.Share knowledge and provide support to junior QA engineers as the team grows, ensuring consistent application of QA best practices.Collaborate with DevOps to improve testing processes and integrate tests into the deployment pipeline.Collaborate with Project Managers in task scoping to ensure developers follow test-driven development principles.Process ImprovementAdvocate for shift-left testing, ensuring that testing starts early and continues throughout the development process.Continuously evaluate and improve QA processes, focusing on increased automation, coverage and efficiency.Participate in sprint reviews, retrospectives and other Agile ceremonies to ensure quality is prioritized.Coordinate with DevOps on creating and maintaining compliance processes and documents.Required Qualifications5+ years in QA engineering, with strong experience in test automation.Expertise in React Native, iOS, https://www.executiveplacements.com/Jobs/S/Senior-QA-Engineer-1259260-Job-Search-04-13-2026-00-00-00-AM.asp?sid=gumtree

Executive Placements

Kensington

Imbewu Africa App – Connect, Trade and Grow Your Business Across Africa

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Imbewu Africa is a powerful business networking and opportunity-matching app designed to connect African entrepreneurs, professionals, investors, and organisations across the continent and into key global markets. It brings together buyers, sellers, service providers, and partners in one easy-to-use mobile platform, helping users turn conversations into real deals and long-term relationships.At its core, Imbewu Africa focuses on unlocking practical opportunities for African businesses – from small start-ups and SMMEs to established companies and organisations. Users can create a rich business profile, showcase their products and services, and connect directly with leads who are actively looking for what they offer. The app is built to cut out noise and guesswork, making it easier to find serious, relevant connections rather than random contacts.The platform offers structured matchmaking so that users can search and be discovered by sector, location, keywords, and interests. This means agribusiness, manufacturing, services, logistics, technology, creative industries, NGOs, and many other sectors can all find tailored networks instead of being lost in generic social feeds. Imbewu Africa is especially relevant for Africa-to-Africa trade and Africa-to-Asia linkages, giving users an intentional space for cross-border collaboration.Beyond connection, Imbewu Africa supports deal flow. Members can promote opportunities, tenders, requests for proposals, partnerships, training, and events inside the app. The goal is to create an ecosystem where conversations easily become meetings, introductions, collaborations, and signed agreements. For many users, this offers a more focused and purposeful alternative to general social media platforms.The app is designed with African realities in mind: data-conscious, simple to navigate, and mobile-first. It allows busy entrepreneurs and professionals to manage key connections on the go, while still keeping profiles businesslike and credible. Features are continuously evolving to support better matchmaking, sector groups, and regional clusters, making it easier to plug into the right networks at the right time.Imbewu Africa is ideal for:Entrepreneurs and SMMEs wanting new markets and partnersCorporates and buyers looking for vetted suppliers or project partnersNGOs and development programmes supporting enterprise or value-chain developmentInvestors, mentors, and consultants seeking deal flow and pipeline visibilityBy joining Imbewu Africa, users tap into a growing community that believes in African-led growth, collaboration, and shared value. The app’s mission is simple: to connect people, opportunities, and markets in a way that is structured, scalable, and authentically rooted in the continent’s potential.

1mo

Centurion

Imbewu Africa: Smart Networking App for SMMEs, Startups & Professionals

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1mo

Johannesburg CBD

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"mobile app developers" in Gauteng

mobile app developers in Gauteng (24 results)

Results for mobile app developers in "mobile app developers" in Gauteng in Gauteng