Senior Web Developer at Lesaka Technologies

About the Role

• We're looking for a Senior Web Developer with deep expertise in React and the TanStack ecosystem to help build modern, scalable, and high-performing web applications.
• This role is ideal for someone who enjoys solving complex technical challenges, designing robust frontend architectures, and mentoring fellow developers while delivering exceptional user experiences.
• Working within an Agile environment, you'll collaborate closely with Product Owners, Designers, QA Engineers, and Backend Developers to deliver innovative digital solutions that are secure, maintainable, and built to scale.

What You'll Do

• Design, develop, and maintain modern web applications using React and the TanStack ecosystem.
• Build reusable, responsive, and accessible UI components.
• Design scalable frontend architecture and promote clean, maintainable code.
• Integrate RESTful APIs and third-party services.
• Optimise application performance, accessibility, and overall user experience.
• Conduct code reviews and mentor junior and intermediate developers.
• Collaborate with cross-functional teams throughout the software development lifecycle.
• Troubleshoot complex technical issues and implement effective solutions.
• Contribute to technical planning, solution design, estimations, and continuous improvement initiatives.
• Champion engineering best practices and high development standards.

What You'll Bring

Essential Skills & Experience

• 6+ years' experience in frontend web development.
• Expert knowledge of React, TypeScript, and modern JavaScript (ES6+).
• Strong experience with the TanStack ecosystem, including:
• TanStack Router
• TanStack Query
• TanStack Table
• TanStack Virtual (advantageous)
• Experience building responsive, cross-browser compatible web applications.
• Strong understanding of component-based architecture and reusable design systems.
• Experience integrating RESTful APIs and implementing authentication using JWT and OAuth.
• Experience with state management solutions such as TanStack Query, Zustand, or Redux Toolkit.
• Strong knowledge of HTML5, CSS3, Tailwind CSS, CSS Modules, or SCSS.
• Experience improving application performance and implementing WCAG accessibility standards.
• Strong understanding of frontend security principles, including:
• XSS prevention
• CSRF protection
• Content Security Policy (CSP)
• Secure token handling
• Clickjacking protection
• Dependency security
• Secure handling of sensitive information
• Experience collaborating with backend and security teams to implement secure authentication, authorisation, session management, and auditability.
• Development Practices

You'll have experience working with:

• Git version control
• GitHub, GitLab, or Azure DevOps
• Agile/Scrum delivery methodologies
• Sprint planning, backlog refinement, code reviews, and CI/CD pipelines
• Clean code principles and modern software engineering practices

Bonus Points If You Have

• Experience implementing frontend telemetry, logging, monitoring, and error tracking.
• Experience with tools such as Sentry, OpenTelemetry, Application Insights, Datadog, or New Relic.
• GraphQL experience.
• Storybook and design system experience.
• Automated testing using Playwright, Cypress, or Jest.
• Docker and modern CI/CD pipelines.
• Micro-frontend architecture experience.
• Cloud platform experience with Azure or AWS.

What Makes You Successful

You'll thrive in this role if you are:

• A strong technical leader who enjoys mentoring others.
• A collaborative communicator who works well across multidisciplinary teams.
• A proactive problem-solver with strong analytical thinking.
• Comfortable working independently while driving technical initiatives.
• Detail-oriented with a passion for delivering high-quality software.

Closing Date 14 July 2026