Senior Specialist Mobile Developer

Overview

Senior Specialist Mobile Developer – DLK Group, Johannesburg, South Africa. Full time. Posted on 19 / 08 / .

Job Information : Date Opened : 19 / 08 / Job Type : Full time Industry : IT Services Work Experience : 5-7 years Salary : Market Related City : Johannesburg Province : Gauteng Country : South Africa

Responsibilities

• Develop mobile applications utilizing Microsoft Xamarin / .NET MAUI mobile development toolset with React Native knowledge
• Backend : Web API service-oriented application running on .NET framework utilizing C# API services integrate with MS SQL database as the data store
• Links to numerous API services to integrate into a broad enterprise architecture
• Extensive experience with Microsoft mobile applications written in Xamarin and .NET MAUI
• Proven track record of delivering mobile application solutions
• Experience with app deployments in all three mobile application stores : Apple iOS App Store, Android, Huawei
• Work includes support and refactoring of existing code
• Support existing mobile applications
• Understand existing product and domain elements and work with business analysts to refine and implement requirement changes
• Refactor and improve code to keep the product maintainable and adaptable
• Evaluate and improve application performance and high availability features
• Create unit and integrated system tests to validate functionality
• Create and execute functional test scenarios (dev testing)
• Write technical documentation explaining system components and usage
• Perform root cause analysis on bugs and fix issues in integrated systems
• Build and deploy mobile applications via DevOps processes to app stores
• Collaborate effectively in a team environment, improving development processes and standards

Minimum Requirements

Relevant tertiary qualification in IT or Computer / Engineering Sciences, OR 8+ years continuous development experience in mobile app development with multiple go-live events

Strong knowledge of Microsoft Xamarin and conversion from Xamarin to .NET MAUI

Experience in .NET MAUI framework and development up to .NET 95

NET 95+ years relevant experience as a senior mobile developer in a multi-tiered .

Experience with API service integration in mobile apps

Experience coding functionality for mobile device components (camera, geolocation, etc.)

Experience in web browser scripting languages preferred (JavaScript / TypeScript, Angular, ASP, HTML5, React)

Knowledge of REST frameworks involving JSON and XML

Working knowledge of mobile app security vulnerabilities and prevention techniques

Ability to work in a team and translate use cases / user stories into user‑friendly applications

Strong understanding of SDLC processes (Agile & Waterfall), tools, and techniques

Technologies & Tools

Xamarin, Xamarin Forms, XAM.NET MAUI, C# and .NET framework, Mobile store deployments (iOS, Android, Huawei), Integration (Web / RESTful services), XML, JSON, namespace management, SQL (MS SQL onwards), SoapUI / Postman, React Native : JavaScript, TypeScript, UI design (flexbox), Node & npm, Azure DevOps : repo management, CI pipelines, release, Strong knowledge of OOP principles and design pattern, IDE : Visual Studio, VS Code, REST / SOAP services, Microsoft Application Center, .NET 4.7.2, jQuery, Web API, WCF, Unity, Bootstrap

Personal Profile

Self‑starter, self‑motivated, and team player. Experience managing a development team. Excellent communication & interpersonal skills. Strong attention to detail. Works well under pressure and meets deadlines. Ability to perform root cause analysis under operational pressure. Lifelong learner, adaptable to new technologies.

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