Senior MERN Stack Developer
IQbusiness · Sandton
Posted 6 August 2026
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Start free — we apply for you →iqx the Technology Division of iqbusiness is seeking an experienced Senior MERN Stack Software Developer to join our team on a 12-month contract. The ideal candidate will have strong expertise in MongoDB, Express.js, React.js, and Node.js, with a proven track record of building scalable, high-performance web applications. This is a fully onsite role based in Sandton. Key Responsibilities
• Design, develop, and maintain full-stack web applications using the MERN stack • Build robust RESTful APIs and microservices using Node.js and Express.js • Develop responsive, user-friendly front-end interfaces using React.js • Work with MongoDB to design schemas, optimize queries, and manage data effectively • Collaborate with cross-functional teams including product owners, designers, and QA • Write clean, maintainable, and well-documented code • Participate in code reviews and mentor junior developers • Troubleshoot, debug, and enhance application performance • Ensure application security, scalability, and reliability Required Skills & Experience • 7+ years of software development experience • Strong proficiency in: • MongoDB • Express.js • React.js • Node.js
- Solid understanding of JavaScript (ES6+) and TypeScript (advantageous)
- Experience with RESTful API development and integration
- Familiarity with version control tools such as Git
- Experience with modern front-end build tools and frameworks
- Strong problem-solving and analytical skills