Senior MERN Stack Developer South Africa - 3 Month Contract

We are hiring a Senior MERN Stack Developer for a 3-month contract in South Africa.
(South Africa Residents Only - No Visa Sponsorship).

This role is ideal for engineers experienced in full-stack development with the MERN stack who thrive in fast-paced, contract-based projects, solving architectural challenges, and mentoring other developers.

You will contribute to evolving our cloud-native microservices architecture, ensuring maintainable, high-performance, and secure software for the duration of the contract.

• Contribute to the design and evolution of scalable microservices architectures

• Translate business requirements into technical designs and implementation plans

• Make long-term architectural decisions to ensure maintainability during the contract

• Drive best practices in code quality, testing, performance, and security

• Develop high-performance applications using MERN stack (MongoDB, Express.js, React.js, Node.js)

• Write clean, maintainable TypeScript code

• Design and maintain RESTful APIs and backend services

• Optimize performance and troubleshoot production issues

• Participate in full SDLC activities: design, implementation, testing, deployment, support

• Ensure robust testing with unit, integration, and E2E tests

• Work closely with product owners, UX designers, QA, and DevOps teams

• Conduct peer code reviews and uphold engineering standards

• Mentor junior and mid-level developers where relevant

• Contribute to technical documentation and knowledge sharing

• Support CI/CD pipelines and automation

• Assist in Docker containerization and cloud deployment strategies

• Monitor performance and production stability

• 5+ years' experience in MERN stack development

• Expertise in MongoDB, Express.js, React.js, Node.js, and TypeScript

• Proven experience building scalable RESTful APIs

• Strong understanding of microservices architecture and distributed systems

• Experience with API security, authentication (JWT, OAuth, RBAC)

• Familiarity with CI/CD pipelines and DevOps practices

• Experience with containerisation (Docker)

• Proficiency with Git and collaborative workflows

• Solid understanding of Agile/Scrum methodologies

• Experience leading technical initiatives and mentoring developers

• Cloud platform experience (AWS preferred)

• Infrastructure-as-Code (IaC) concepts

• SQL databases (MySQL, PostgreSQL)

• High-transaction or enterprise-scale application experience

• Exposure to Domain-Driven Design (DDD)

• Strong ownership mentality and accountability

• Architecturally curious and solution-oriented

• Excellent analytical and problem-solving skills

• Clear and professional communicator

• Collaborative team player with leadership potential

• Passionate about modern engineering practices and continuous learning

• Ability to operate independently

• 3-month contract for senior engineers

• Remote-friendly within South Africa. ️ Please note: Applications from candidates outside South Africa will not be considered.

• Work on large-scale, cloud-native applications

• Modern agile engineering culture

• Mentor and grow with a collaborative, skilled team