Senior Frontend Engineer — React & TypeScript, Sandton

Placements24; Sandton; On-site; ZAR 900,000 - 1,200,000; Full time

Benefits offered by this job

Competitive salary

Health insurance

Professional development

Modern office in Sandton

Conferences/training

Retirement plan

Job summary

Placements24 in Sandton, Gauteng, is seeking a Senior Frontend Engineer specialized in React and TypeScript to build high-traffic user interfaces for a leading e-commerce platform.

You will translate designs into performant UI, collaborate with backend teams, and mentor junior devs while shaping the frontend architecture. This role offers a competitive salary, modern office amenities, and strong professional development opportunities within a fast-paced, innovative team.

Qualifications

• Bachelor's degree or equivalent work experience in CS or related field.
• Minimum 5 years of professional frontend experience.
• Expertise in JavaScript (ES6+) and TypeScript.
• Proven React.js experience building complex apps.
• Strong state management knowledge (Redux, Context API).
• Experience with Webpack, Babel, HTML5, CSS3 and preprocessors (SASS/LESS).
• Experience consuming RESTful APIs and Git.
• Familiarity with Next.js is a plus.
• Testing with Jest and React Testing Library.

Responsibilities

• Develop, test, and deploy high-quality, responsive user interfaces using React and TypeScript.
• Collaborate with UI/UX designers to translate wireframes and mockups into functional web pages.
• Work closely with backend engineers to integrate frontend components with server-side logic via APIs.
• Optimize application components for maximum speed, scalability, and user experience.
• Write clean, maintainable, and well-documented code.
• Implement and manage state management solutions (e.g., Redux, Zustand).
• Ensure cross-browser compatibility and performance optimization.
• Participate in code reviews, providing constructive feedback to peers.
• Troubleshoot and debug frontend issues, identifying and implementing effective solutions.
• Stay up-to-date with the latest frontend technologies and best practices.
• Mentor junior frontend developers and contribute to team best practices.
• Contribute to architectural discussions and decisions for the frontend stack.

Skills

React.js

TypeScript

JavaScript (ES6+)

Redux

Zustand

Unit testing (Jest)

React Testing Library

Web performance

Education

Bachelor's degree in Computer Science, Web Development, or related field

Tools

Webpack

Babel

HTML5

CSS3

RESTful APIs

Git

Next.js

Job description

Placements24 in Sandton, Gauteng, is seeking a Senior Frontend Engineer specialized in React and TypeScript to build high-traffic user interfaces for a leading e-commerce platform.

You will translate designs into performant UI, collaborate with backend teams, and mentor junior devs while shaping the frontend architecture. This role offers a competitive salary, modern office amenities, and strong professional development opportunities within a fast-paced, innovative team.