Frontend Developer

Gismart, a prominent global mobile app developer with a significant footprint in the Health & Wellness, Utilities, and Music sectors, is seeking a talented Frontend Developer to join their expanding team. Having surpassed the impressive milestone of one billion downloads worldwide, Gismart is committed to its mission of enhancing global well-being through innovative mobile solutions. Despite its headquarters in London, the company operates with a distinctly international flavour, boasting a diverse workforce of over 350 professionals spread across Europe and beyond. This dynamic environment fosters creativity and innovation, bringing together individuals from various backgrounds in entertainment, music, and technology to collaborate and achieve collective success.

About the role

As a Frontend Developer at Gismart, you will play a crucial role in shaping the user experience of their web platforms. The position is fully remote, offering flexibility and the opportunity to contribute to a globally recognised company from anywhere. You will be instrumental in the ongoing development of new functionalities for established web funnels, ensuring they are engaging, efficient, and user-friendly. A key aspect of this role will involve constructing single-page applications designed to facilitate a seamless web-to-app transition, bridging the gap between their web presence and their extensive mobile offerings. Furthermore, you will be involved in integrating essential third-party systems, including sophisticated analytics platforms to monitor user behaviour and optimise performance, robust A/B testing frameworks to refine user journeys, and secure payment gateways to facilitate transactions.

The core responsibilities of this role revolve around the hands-on development and enhancement of Gismart's web applications. This includes:

• Actively contributing to the development of new features for existing web funnels, ensuring a high standard of quality and user engagement.
• Building and maintaining single-page applications that are crucial for enabling the web-to-app conversion flow.
• Integrating various essential systems, such as advanced analytics tools for data-driven insights, A/B testing solutions for continuous improvement, and reliable payment systems for commercial operations.

What they're looking for

Gismart is searching for a developer with a solid foundation in modern frontend technologies. A deep understanding of modern JavaScript, specifically ES6+ features, is paramount. Proficiency in static typing using TypeScript is essential for building robust and maintainable codebases. Experience with the React ecosystem is a must, particularly in the context of building applications with functional components and leveraging React Hooks. Furthermore, candidates should possess practical experience with state management libraries such as Zustand for client-side state and React Query for managing server state. The ability to write clean, modular, and easily maintainable styles using libraries like styled-components is also a key requirement for this position.

This type of frontend development role is increasingly common across various industries in South Africa, particularly within the tech and digital marketing sectors. While specific remuneration varies widely based on experience and the company's scale, a mid-level Frontend Developer in South Africa might expect a salary ranging from R400,000 to R700,000 annually. Employers often include a mix of established local companies, growing startups, and international firms with a South African presence. Career progression typically involves moving into senior development roles, team leadership positions, or specialisations in areas like UI/UX architecture or performance optimisation.

• Strong understanding of modern JavaScript (ES6+) and static typing with TypeScript
• Proficiency in building applications using functional components and React Hooks
• Experience with React Query for server state and Zustand for client state
• Skilled in writing modular and maintainable styles using styled-components