About Appier 

Appier is a software-as-a-service (SaaS) company that uses artificial intelligence (AI) to power business decision-making. Founded in 2012 with a vision of democratizing AI, Appier’s mission is turning AI into ROI by making software intelligent. Appier now has 17 offices across APAC, Europe and U.S., and is listed on the Tokyo Stock Exchange (Ticker number: 4180). Visit www.appier.com for more information.

About the role

Frontend engineers at Appier focus on handcrafting sophisticated web UI using cutting-edge front-end development technologies / tools. We work closely with UI/UX designers and backend engineers and deliver high-quality, fluent and elegant web applications to our enterprise customers, or to aid daily operations within Appier.

 [The seniority/title is determined by job-related skills, experience, and evaluation after the interview.]

Responsibilities

• Design & develop front-end architecture & interactive user interfaces
• Work closely with backend engineers to integrate services, and contribute to building lightweight RESTful APIs when necessary to support frontend functionality
• Ensures the flexibility of front-end architecture and the high performance of responsiveness
• Build reusable code and UI design systems for cross-product consistency and scalability
• Write unit, integration, and end-to-end tests to ensure code quality
• Perform code reviews to ensure existing code stay high-quality, fast, and flexible
• Handle and resolve issues escalated from the production operational environment
• Participate in idea brainstorming and contribute ideas to technology, algorithms and products

About you

[Minimum qualifications]

• 3+ years of experience in software development
• Good knowledge of HTTP, CSS, modern JavaScript (ES6+ / ECMAScript 2015+), TypeScript, HTML, DOM, and web standards
• Respect coding convention, language standard syntax, documentation
• In-depth knowledge of front-end frameworks and technologies (e.g., React.js, Vue.js) and their ecosystems.
• Proactive, good interpersonal and problem-solving skill
• Self-motivated, proactive, and a strong team player
• Solid understanding of version control (Git) and CI/CD workflows
• Experience leveraging AI-assisted development tools (e.g., GitHub Copilot, Cursor, Windsurf) to accelerate coding, debugging, and refactoring. Familiarity with these tools is expected as part of our team’s daily development workflow.
• Passion for clean code, scalability, and performance, curious about new technologies and enthusiastic about developer experience
  
  

[Preferred qualifications]

• Familiarity with modern build tools and bundlers (e.g., Babel, Webpack, Vite, Rspack, esbuild, etc.)
• Experience in CSS Pre/Post-processors (PostCSS, SASS or LESS) or modern CSS solutions (e.g., CSS Modules, Tailwind CSS, Styled Components).
• Experience in Node.js, Python, GraphQL, and integrating with various backend services and databases (e.g., MySQL, MongoDB)
• Experience with testing frameworks such as Jest, React Testing Library, Vitest, or Playwright
• Experience building or integrating SDKs or capable of developing across multiple browsers, platforms
• Experience in web performance optimization
• Familiarity with micro-frontend architecture
• Experience with data visualization

#LI-AK1

About Appier 

Appier is a software-as-a-service (SaaS) company that uses artificial intelligence (AI) to power business decision-making. Founded in 2012 with a vision of democratizing AI, Appier’s mission is turning AI into ROI by making software intelligent. Appier now has 17 offices across APAC, Europe and U.S., and is listed on the Tokyo Stock Exchange (Ticker number: 4180). Visit www.appier.com for more information.

About the role

Frontend engineers at Appier focus on handcrafting sophisticated web UIs and ad content using cutting-edge front-end development technologies and tools. We collaborate closely with designers and backend engineers to deliver high-quality, smooth, and elegant web applications for the advertising domain as well as support daily operations within Appier.

 [The seniority/title is determined by job-related skills, experience, and evaluation after the interview.]

 Responsibilities

• Design and develop reusable advertising UI components (e.g., banners, video ads) and supporting systems using modern JavaScript frameworks and AI-powered tools.
• Build and maintain a modular JavaScript library or SDK to ensure scalable, consistent, and easily integrated ad rendering and tracking.
• Optimize ad content performance through efficient loading strategies and responsive design.
• Develop integrations with external SSP platforms, ensuring compliance with technical standards.
• Implement and manage analytics tools to monitor user interaction and ad effectiveness, delivering actionable insights.
• Participate in brainstorming sessions, contributing innovative technical solutions across UI/UX, algorithms, and product development.
• Utilize AI-powered development tools (e.g., GitHub Copilot, Tabnine, Cursor) to enhance coding efficiency and maintain code quality.

About you

[Minimum qualifications]

• Solid understanding of HTML, CSS, JavaScript, TypeScript, DOM, HTTP and web standards.
• Knowledge of modern front-end frameworks like React, Vue, Svelte.
• Experienced in integrating with REST APIs and GraphQL
• Experienced with bundler: Vite, Webpack, esbuild, and Rollup.
• Familiarity with Git for version control.
• Experience ensuring cross-browser compatibility.
• Practice coding conventions, syntax standards, and thorough documentation.
• Shows initiative and strong interpersonal skills in problem-solving.
• Ability to work effectively both independently and as part of a team.

[Preferred qualifications]

• Explores and shares insights on AI tools like GitHub Copilot, Tabnine, Cursor, and AI-driven testing to enhance front-end development and code quality.
• Experienced with meta frameworks like: Next.js, Nuxt.js, SvelteKit.
• Experienced with CSS-in-JS, PostCSS, SASS, and Tailwind CSS.
• Skilled in Jest, React Testing Library, Cypress, and Playwright for testing.
• Experienced in web performance optimization using Core Web Vitals, Lighthouse, WebPageTest, and Chrome DevTools.
• Experienced in debugging on any web environments like webview or browser.
• Experienced in server-side JavaScript runtime: Node.js, bun, deno.
• Experienced with relational databases or NoSQL databases.
• Familiar with CI/CD tools (GitHub Actions, Jenkins, Bitbucket) and Docker.

#LI-AK1

About the Company

The company is the world’s first licensed hybrid decentralized exchange (DEX), on a mission to make wealth-building as natural as daily life. It is building a compliant, self-custodial platform for premium tokenized strategies—from crypto to alternative investments—on trusted infrastructure.

Key Responsibilities:

• Architect and Develop: Build and maintain sophisticated, responsive web applications using React, Next.js, Sass, and TypeScript.

• Design Collaboration: Work closely with UX/UI designers to translate complex design specifications into high-quality code, ensuring visual consistency and an intuitive user interface.

• Performance Optimization: Audit and optimize applications to ensure maximum speed, responsiveness, and scalability across various devices and browsers.

• Code Excellence: Write clean, modular, and well-documented code while adhering to industry best practices and internal coding standards.

• Technical Troubleshooting: Identify, debug, and resolve complex frontend issues to maintain optimal platform performance and stability.

• Continuous Improvement: Stay at the forefront of frontend technologies and industry trends to continuously evolve our development processes and toolkit.

Required Qualifications:

• Education: Bachelor’s degree in Computer Science, Software Engineering, or a related technical field.

• Professional Experience: 2 to 4+ years of proven experience in frontend development, specifically within high-traffic or complex application environments.

• Technical Mastery: Advanced proficiency in React and a deep understanding of core web technologies including HTML5, CSS3, and JavaScript/TypeScript.

• Responsive Design: Demonstrated expertise in implementing responsive web design and ensuring seamless cross-browser compatibility.

• Version Control: Strong experience using Git for version control and collaborative development workflows.