Mid/Senior Frontend Engineer - ReactJS

About Us

Hello Clever is building the next generation of payments and loyalty infrastructure by turning every transaction into growth for merchants.

We’re an AI-powered fintech operating across 26+ markets, helping businesses move money in real time and convert payments into measurable outcomes like higher repeat rates, bigger baskets, and smarter customer engagement. Our platform combines local account-to-account rails, embedded cashback and loyalty products, and powerful data intelligence through Clever AI, so merchants can launch offers, optimise ROI, and scale faster, all through a single integration.

We recently crossed $70M in live ARR and are on track to pass $100M by the end of 2026-just 2.3 years after reaching our first $1M. It’s an exciting milestone that reflects the scale of what we’re building and the opportunity ahead.

We’re also proud to be recognised on the global stage, including being named Australia’s fastest-growing fintech, recognised in Forbes Asia’s Top 100, ranked among the AFR Fastest-Growing Companies, and selected for Inc. Magazine’s Best in Business.

Role Focus

This is a Mid/Senior Frontend Engineering role focused on building and evolving production-grade React web applications, with React and TypeScript as the core technologies. You will own frontend architecture and help shape engineering standards across the products you work on.

This is a full-time, hybrid role based in Ho Chi Minh City, with occasional in-person catch-ups at our office and no fixed office days. You will work Vietnam business hours, with availability to join regular meetings with our US team outside those hours.

Responsibilities

• Design, build, and maintain accessible, responsive React experiences across our payment, merchant, dynamic checkout and internal operations products.
• Own frontend architecture across the codebase, including application structure, state management, data flow, component boundaries, API integration, and dependencies. Surface architectural, performance, and reliability risks early.
• Establish reusable patterns, shared components, and engineering standards across products and teams.
• Act as the technical point of contact for frontend decisions with US-based stakeholders, and raise the quality bar through code review, pairing, and guidance.
• Implement complex flows involving payments, multi-currency experiences, asynchronous states, retries, failures, validations, and edge cases.
• Improve performance, reliability, accessibility, security, and maintainability across the frontend codebase.
• Investigate production issues, support root-cause analysis, and help prevent recurring problems.

Requirements (Must Have)

• 3+ years of frontend engineering experience, with proven ownership of production-grade React applications shipped end to end.
• Strong hands-on experience with React and TypeScript, plus solid fundamentals in JavaScript, HTML, CSS, browser APIs, responsive layouts, and accessibility.
• Strong understanding of frontend architecture, covering component design, state management, data flow, API integration, and application structure, with the judgment to balance trade-offs and evolve existing systems without unnecessary complexity.
• Experience acting as a technical anchor on a team: driving architecture decisions, establishing reusable patterns and standards, and lifting code quality through review and guidance.
• Experience integrating with REST APIs, strong debugging skills using browser DevTools and performance tooling, and a good understanding of unit, integration, and end-to-end testing.
• Clear written and verbal English communication, with the ability to work independently across distributed teams.

Nice to Have

• Experience with Next.js or similar ReactJS frameworks.
• Experience building or maintaining design systems and reusable component libraries.
• Payment, fintech, banking, marketplace, or e-commerce experience, including PCI-aware frontend practices.
• Experience with Playwright, Cypress, Jest, React Testing Library, or similar testing tools.
• Experience with React Native or mobile-first product development.
• A disciplined approach to AI-assisted development, using tools like Cursor, Claude Code, or GitHub Copilot without letting review standards slip.

Why Join Hello Clever?

• High-growth fintech: Help shape the future of real-time payments and merchant growth infrastructure, live in 22+ markets.
• Meaningful technical challenges: Build experiences that support real money movement, reliability, and scale.
• Room to grow: The frontend team is being built from the ground up, with real scope to expand your technical influence over time.
• Dynamic culture: A results-driven team that values innovation, ownership, and collaboration.

How to Apply

Here’s what to expect:

• Phone screen: A conversation with our HR team covering your experience, motivation, and English communication.
• Technical interview: A technical discussion with our Engineering Lead covering your frontend experience, architecture decisions you've owned, and how you approach problems.
• Leadership interview: A final conversation with our Head of Engineering and Head of Product on collaboration, ownership, and how you would contribute to the team.

Sound like you? Let’s talk. Drop us a note at [email protected]

Direct applicants only, no agencies.