Senior Frontend Software Engineer (React/Angular/Vue & JavaScript/TypeScript) (CPT Onsite)

DataFin; Cape Town; On-site; ZAR 300,000 - 400,000; Full time

Job summary

A cutting-edge FinTech company in Cape Town seeks a Senior Frontend Software Engineer to lead a team and architect robust solutions for cloud applications. Candidates should have 4+ years of experience with React and advanced JavaScript skills. This role involves mentoring junior engineers and working closely with backend teams to create full stack products, ensuring best practices in performance and security. Competitive benefits and a dynamic work environment await you.

Qualifications

• 4+ years experience working as a Developer in a Software Development team.
• Modern SPA framework fluency — React, Angular, or Vue (React preferred).
• Advanced JavaScript / TypeScript skills required.
• Solid client-side state management.
• Performance, security, and accessibility best practices.

Responsibilities

• Lead the team in implementing and optimising Frontend technologies.
• Architect and build robust Frontend solutions for cloud applications.
• Collaborate closely with Backend teams to create seamless Full Stack products.
• Mentor the team - review code and level-up Junior Engineers.

Skills

React

Advanced JavaScript

TypeScript

Angular

Vue

State Management

CI/CD

Mentorship

Job description

Environment

BUILD & LEAD a Frontend team while raising the bar on customer-facing interfaces as the next Senior Frontend Software Engineer for a cutting-edge FinTech company providing cloud-native software to optimise the processing of financial transactions. As one of the first senior hires in this team, you will shape the technical direction, establish standards, and mentor future team members — all while architecting, scaling, and continually shipping a data-intensive single-page application that powers complex, real-time payment workflows for banks, retailers and FinTech partners. You will require 4+ years’ experience in a similar role with React, Angular or Vue (React preferred), Advanced JavaScript/TypeScript skills, CI/CD with automated tests and linting & experience operating enterprise-scale SPAs (feature flags, telemetry, observability).

Duties

• Lead the team in implementing and optimising Frontend technologies.
• Architect and build robust Frontend solutions for our cloud applications.
• Collaborate closely with Backend teams to create seamless Full Stack products.
• Architect and evolve the SPA - own Frontend from first commit through to production.
• Design predictable state - model complex payment flows with Redux (and sagas) or equivalent patterns; keep logic testable and deterministic.
• Drive the component library - extend the design system, enforce consistency, accessibility, and responsive behaviour.
• Collaborate with UX/UI Designers - translate prototypes into polished components, validate interactions, and iterate on feedback.
• Partner with Backend teams - define API contracts, optimise data payloads.
• Guard quality in the pipeline - maintain CI/CD scripts, automated tests, and lint rules; block regressions before they reach main.
• Mentor the team - review code, share patterns, and level-up Junior Engineers.
• Champion security and compliance - implement OWASP best practices, uphold requirements, and conduct regular audits.
• Monitor and iterate - Collaborate with the Site Reliability function to track real-world performance.

Requirements

• 4+ Years experience working as a Developer in a Software Development team.
• Modern SPA framework fluency — React, Angular, or Vue (React preferred).
• Advanced JavaScript / TypeScript skills (required).
• Solid client-side state management.
• Design-system and reusable component library know-how.
• REST/GraphQL (Optional).
• CI/CD with automated tests and linting.
• Performance, security, and accessibility best practices.
• Experience operating enterprise-scale SPAs (feature flags, telemetry, observability).
• Proven ability to mentor and guide team members in Frontend Development best practices.

Advantageous

• Previous experience working in the FinTech industry.
• Built a Frontend function from the ground up - stood up processes, tooling, and team culture in the early, ambiguous phase of a product or company, rather than inheriting a mature setup.
• Experience in Agile / Scrum methodologies.