Senior Full Stack Developer (React & Node.js)

SavageOne Pty Ltd; Johannesburg; On-site; ZAR 900,000 - 1,300,000; Full time

Job summary

SavageOne Pty Ltd in Johannesburg is seeking a Senior Full Stack Developer to own end-to-end web solutions using React and Node.js. You will build scalable front-end interfaces, design robust APIs, and guide architectural decisions in a fast-paced environment.

You will collaborate with product and design teams, implement secure authentication, and contribute to CI/CD pipelines while mentoring junior developers and promoting engineering best practices.

Qualifications

• 5+ years of experience as a Full Stack Developer.
• Strong React.js skills with hooks and state management.
• Backend expertise in Node.js with Express.js and Nest.js.
• Experience designing RESTful APIs and GraphQL endpoints.
• Database design with PostgreSQL or MongoDB.
• Familiar with DevOps, CI/CD, Docker and cloud platforms.
• Proficiency in TypeScript and agile methodologies.

Responsibilities

• Develop and maintain scalable web applications using React for frontend and Node.js for backend.
• Design and implement RESTful APIs and GraphQL endpoints.
• Lead architectural decisions for performance, security, and scalability.
• Collaborate with UI/UX designers to build responsive interfaces.
• Integrate with databases like PostgreSQL, MongoDB, Firebase.
• Implement authentication/authorization mechanisms (JWT, OAuth).
• Ensure CI/CD pipelines and automated testing and deployment.
• Mentor junior developers and promote engineering best practices.

Skills

Full Stack Developer

React.js

Node.js

Express.js

Nest.js

PostgreSQL

MongoDB

GraphQL

WebSockets

REST APIs

TypeScript

Agile

OAuth

JWT

CI/CD

Docker

Cloud (AWS/GCP/Azure)

Jest

Cypress

Tools

Docker

Jest

Job description

Senior Full Stack Developer (React & Node.js)

About the job Senior Full Stack Developer (React & Node.js)

About the Role

Key Responsibilities

• Develop and maintain scalable web applications using React.js for frontend and Node.js for backend services.
• Design and implement RESTful APIs and GraphQL endpoints to support frontend and mobile applications.
• Lead architectural decisions, ensuring performance, security, and scalability.
• Work closely with UI/UX designers to implement responsive and user-friendly interfaces.
• Integrate with databases (SQL & NoSQL like PostgreSQL, MongoDB, Firebase) and caching solutions.
• Implement authentication and authorization mechanisms (JWT, OAuth, Role-based Access Control).
• Ensure CI/CD pipelines, automated testing, and deployment workflows are in place.
• Provide technical mentorship to junior developers and contribute to best practices.

Required Skills & Experience

• 5+ years of experience as a Full Stack Developer.
• Strong proficiency in React.js (Hooks, Context API, Redux, Next.js is a plus).
• Backend expertise in Node.js, Express.js, and Nest.js.
• Experience with database design and management (PostgreSQL, MongoDB, Firebase, or DynamoDB).
• Hands-on experience with REST APIs, GraphQL, and WebSockets.
• Strong understanding of DevOps practices, CI/CD, Docker, and cloud platforms (AWS, GCP, or Azure).
• Experience with testing frameworks (Jest, Cypress, Mocha).
• Proficiency in TypeScript is a plus.
• Knowledge of agile development methodologies (Scrum, Kanban).
• Excellent problem-solving skills and ability to work in a fast-paced environment.

Preferred Qualifications

• Experience with Microservices and Serverless architecture.
• Familiarity with Web3, blockchain, or AI/ML is a plus.
• Prior experience leading a development team.