Senior Frontend Engineer

Senior Frontend Engineer + TypeScript)

Location: Johannesburg South (Meyersdal)

Employment Type: Full-time (Office-Based)

Salary: Based on experience + performance-based bonuses

Start Date: ASAP

Department: Software Development / Engineering

About Us

At travSIM, we help travellers stay connected worldwide through a wide range of SIM and eSIM solutions. We're expanding fast and are now looking for a skilled Senior Frontend Engineer + TypeScript) to join our engineering team. You'll be responsible for delivering a high-performing e-commerce website with Stripe integration, built on and deployed on Vercel.

Our backend engineers own the NestJS backend — your focus will be building a clean, scalable, and performant frontend integrated with Payload CMS and external APIs.

Read Before Applying

Do Not Apply If:

• You do not have proven, hands-on experience with (App Router & RSC) in production
.

• You do not have strong, practical experience with
TypeScript
on the frontend (4+ years).

• You have
not
worked on frontend payment flows using
Stripe
in production.

• You cannot demonstrate practical experience with
Payload CMS
(or a similar headless CMS) in real projects.

• You have not built
mobile-responsive
user interfaces for production.

• You are not comfortable working in a fast-paced, collaborative environment.

What You'll Be Doing

You will take full ownership of the frontend delivery for a global e-commerce platform, working closely with backend engineers and product teams to ensure seamless API and CMS integration.

Core Responsibilities

• Develop, test, and maintain a + TypeScript
e-commerce frontend (deployed on Vercel).

• Integrate
Stripe
payments (Payment Element, Checkout, Apple Pay, Google Pay, 3DS flows).

• Implement
Payload CMS
integration, including live previews, block-based content, and revalidation triggers.

• Ensure high performance and SEO (Core Web Vitals, structured data, i18n routing).

• Build responsive and accessible UI with
Tailwind CSS
, following WCAG 2.1 fundamentals.

• Implement robust API integration and data caching (
SWR / React Query
).

• Handle forms and validation with
React Hook Form + Zod/Yup
.

• Write and maintain unit, e2e, and performance tests (
Jest/RTL, Playwright, Lighthouse CI
).

• Monitor and improve quality (
Sentry, GA4, A/B testing, feature flags
).

• Apply modern security and best practices (XSS/CSRF mitigation, secure headers, secrets management).

Required Skills & Experience

• Strong hands-on experience with (App Router & RSC)
in production.

• Proficiency in
React + TypeScript
with modern hooks and state management (4+ years).

• Experience integrating
Stripe frontend payment flows
in production.

• Proven work with
Payload CMS
and content-driven routing (or very similar headless CMS experience).

• Strong grounding in
performance, SEO, and accessibility
fundamentals.

• Experience writing and maintaining
unit and e2e tests
.

• Solid understanding of
frontend security
practices.

Nice-to-Have (Bonus Skills)

• Experience deploying and managing apps on Vercel
(environments, previews, edge functions).

• Familiarity with
Prisma/Postgres
concepts and
Redis
caching.

• Experience with large-scale
i18n and localisation
.

• Exposure to growth and analytics tools (
PostHog, GTM server-side, affiliate tracking
).

• Knowledge of customer tooling integrations (
Crisp/Intercom
).

Why Join Us

• Build high-performance web platforms with direct impact on global travellers.

• Collaborate with an international team of engineers and product experts.

• Opportunity to work on cutting-edge frontend tech + TypeScript
, deployed on
Vercel
).

• Competitive compensation, performance incentives, and growth opportunities.

If you're ready to deliver world-class frontend experiences, we'd love to hear from you