Appier is an AI SaaS company on a mission to make AI easy, by making software intelligent. Founded in 2012, Appier has 17 offices across APAC, U.S. and Europe and is listed on the Tokyo Stock Exchange. Visit for more information.

You are going to work in the AiDeal product team. AiDeal is one of our products, which presents discount offers to e-commerce site visitors at the most appropriate timing, personalized by technology to detect the visitor’s growing desire to buy. We do this by analyzing browser behavior data (mouse-moving, scrolling, clicks, gestures) in real-time.

Our technologies are based on AWS, Vue.js, GraphQL, Node.js, Python, Redis, MySQL and MongoDB and very open-minded to accepting new technologies. We are everyday tackling huge challenges like analyzing, machine-learning and visualizing online traffics of more than 1 billion page views per month.

If you are not currently located in Japan yet, we will help you relocate by sponsoring your VISA. As you are going to work in an international team, no Japanese skills are required because English is the most important language for our daily work.

Our Response to COVID-19

As our target market is e-commerce, the COVID-19 crisis has actually led to a boost in demand for our solution. Our team has been working from home since mid-February in 2020. Even before the crisis, our engineers were already working remotely with Appier members in Taiwan, so making the transition to working from home went smoothly.

Due to travel restrictions, we cannot help you relocate to Japan if you are currently not living in Singapore, Korea, Hong Kong, China, Australia, India, Malaysia, Thailand, Vietnam or Philippines as of now.

About the Role

As a Software Engineer, Full Stack Engineer, you will be involved in both web application and data pipelines development in order to provide high-quality services to achieve business needs. You will focus on architecture, system design, feature implementation, code review, test automation and deployment of new features with high scalability requirement. You will work at Appier Japan in Tokyo, Japan and co-work with teammates in Taipei, Taiwan.

Task of the Role

  • Full stack web application and data pipelines development

  • Ensure scalability, reliability and maintainability among micro-services

  • Design system architecture and apply proper technologies

  • Work closely with our PM/ML team to define feature specifications

  • Perform code reviews to ensure high-quality and clean code

  • Build and maintain unit tests and test automation

  • Handle and resolve system and clients issues escalated from operational environment

  • Stay on-call for critical alerts in rotation

About You


  • BS/BA degree in Computer Science or relevant technical field with min. 2 years of relevant experience

  • Ability to build services on Linux-based systems

  • Experience in developing Node.js applications

  • Experience in one of the modern frontend frameworks (Vue, React, etc.)

  • Experience in web API development (REST, GraphQL, etc.)

  • Experience in using SQL and NoSQL database (MySQL, MongoDB, Redis, etc.)

  • Experience in AWS, GCP or other cloud computing services

  • Familiarity with Git

  • Team player and able to work independently

  • Proactive, great interpersonal and problem-solving skills

[Nice to Have]

  • Experience in writing TypeScript, Ruby or Python

  • Experience in designing and architecting large scale distributed system

  • Familiarity with GraphQL

  • Familiarity with Socket.IO

  • Basic knowledge of machine learning

Why Join Us?

We believe in building a great working environment where passionate individual can give their best, and to work with a talented team. To reward Appiers for their contribution, we also work hard to offer perks and benefits to make their life better.

Perks and Benefits

  • Company office locations at the heart of central business district (CBD) in all our countries

  • Well stocked pantry with snacks and drinks

  • Competitive salary

  • Health insurance for all employees

  • Frequent company and team gatherings to celebrate success and life in general

  • We allow flexible working hours and do not have a hard core time

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