(Senior/Staff) Frontend Engineer, Billing

Airwallex5 months ago

Location

SG - Singapore

Type

Full Time

Salary

SGD 120,000 – 180,000

Level

Senior

Role

Frontend Engineer

Posted

Oct 9, 2025

Full TimeSenior

The role

Summary

Airwallex is seeking a Senior/Staff Frontend Engineer to join their Billing team in Singapore, focusing on building next-generation billing and invoicing platforms. The role involves developing scalable micro frontend applications using React, TypeScript, and GraphQL while collaborating across global teams to create seamless financial solutions for businesses worldwide.

What you'll do

Frontend Development: Code with the latest version of React and TypeScript to build high-quality billing products and user interfaces

Micro Frontend Architecture: Build micro frontend web applications with domain-based design architecture using single SPA framework and best practices

Backend Integration: Leverage Apollo GraphQL as Backend for Frontend (BFF) to build scalable, high-performance Node.js services with contract-based backend integration

Design System Development: Collaborate with design teams to build design systems and common components, providing universal UI/UX experience across domain teams

Library Development: Deliver NPM packages and library widgets with open source projects for easy client integration

Cloud Deployment: Deploy micro frontend and Node.js services using GCP & Aliyun Kubernetes, Bucket CDN, and Cloudflare with GitLab CI/CD best practices

Quality Assurance: Implement comprehensive testing using React Testing Library, Cypress for unit and e2e tests with 80%+ coverage

CMS Development: Build no-code/serverless CMS systems using Contentful and Next.js for corporate and branding landing pages

Technical Leadership: Actively engage with frontend guild, research cutting-edge technologies, and drive initiatives to build high-quality products while managing technical debt

What we look for

Technical

Frontend FrameworksProficient in React, Vue, Angular and their corresponding technology stacks

Modern Web TechnologiesExpert knowledge of HTML5, CSS3, ECMAScript 6+, and TypeScript

Styling TechnologiesExperience with Emotion, Styled-Components, SCSS, and CSS frameworks like Material UI, Ant Design, Bootstrap

Build ToolsProficiency with Webpack, Polyfill, Rollup.js for application bundling and optimization

Backend IntegrationFamiliar with HTTP(S) protocol, RESTful APIs, and Node.js for BFF development

Financial SystemsExperience developing large-scale financial web systems and applications

Education

Degree RequirementBachelor's degree or above in Computer Science or related technical field

Experience

Frontend DevelopmentMore than 3 years of professional frontend development experience

Frontend ArchitectureMore than 2 years of frontend architecture and system design experience

Large-Scale SystemsProven experience in developing and maintaining large-scale financial web systems

Skills

Required skills

React & TypeScriptExpert-level proficiency in React framework and TypeScript for type-safe development

Modern JavaScriptAdvanced knowledge of ECMAScript 6+ features and modern JavaScript development practices

Web FundamentalsStrong foundation in HTML5, CSS3, and responsive web design principles

Frontend ArchitectureExperience designing and implementing scalable micro frontend architectures

API IntegrationProficiency with RESTful APIs, HTTP(S) protocols, and GraphQL for backend integration

Build ToolsHands-on experience with Webpack, build optimization, and modern frontend tooling

Nice to have

GraphQL & Next.jsExperience with GraphQL for data management and Next.js for serverless applications

DevOps SkillsKnowledge of Docker, Kubernetes, CI/CD pipelines, and cloud deployment practices

Testing ExpertiseExperience with BDD, TDD, automated testing frameworks, and maintaining high test coverage

Analytics & TrackingExperience with Google Analytics, Google Tag Manager, and data analytics implementation

Technical LeadershipExperience with technical writing, blogs, open source contributions, or frontend community involvement

International ExperienceOverseas study or work experience, particularly in fintech or financial services

Compensation & benefits

Salary

SGD 120,000 – 180,000 (annual)

Stock options

Available

Benefits

Global Collaboration

Work with cross-functional teams across 26 offices worldwide including Shanghai and Singapore

Career Growth

Accelerated learning opportunities and true ownership in a fast-growing fintech unicorn

Cutting-Edge Technology

Work with latest technologies and contribute to open source projects and NPM packages

Impactful Work

Build solutions that empower over 200,000 businesses worldwide including major brands like Brex, Rippling, and SHEIN

Equal Opportunity

Diverse and inclusive workplace that values merit, qualifications, and talent regardless of background

Innovation Focus

Opportunity to research cutting-edge technologies and drive technical initiatives within the frontend guild

Interview process

1
Application Review — Initial screening of resume, portfolio, and GitHub contributions focusing on React/TypeScript projects and financial system experience
2
Technical Phone Screen — 45-minute technical discussion covering JavaScript fundamentals, React concepts, and system design for frontend applications
3
Coding Assessment — Take-home or live coding challenge involving React component development, TypeScript implementation, and API integration
4
System Design Interview — Technical interview focusing on micro frontend architecture, scalability considerations, and billing system design patterns
5
Behavioral Interview — Discussion of past projects, collaboration experience, and alignment with Airwallex's operating principles and mission
6
Final Round — Meeting with senior engineering leadership and team members to discuss technical vision, career goals, and cultural fit