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Senior Software Engineer at Gengo
Tokyo, JP

Gengo is looking for a passionate Senior Software Engineer to join our growing team of internationally talented engineers. Depending on experience, you will be responsible for many phases of the software development lifecycle including technical research, requirements analysis, implementation or enhancements to the product, unit testing, debugging, and maintenance.

As a key member of the team, you will be expected to work on new projects as well as improving various aspects of our legacy code. Thinking in terms of scalability and reliability will be essential, and you will be working within a service-oriented architecture and use all of the Gengo APIs.

The Gengo development team is passionate and results-driven. Whether you are a veteran python developer or just getting started, it's your drive for excellence and perfection that will matter.


  • Translating functional requirements into conceptual and detailed design.
  • Providing time estimates for development effort.
  • Implementing proof of concept, prototypes, and production-grade software.
  • Creating unit tests.
  • Coordinating sign-off from our QA/Test team.
  • Working with Operations and Support staff to troubleshoot software issues as well as implementing bug fixes.

Required Skills

  • At least 5+ years of professional experience in one of the following languages: Java, C#, Javascript (TypeScript preferred), Go or Python.
  • Experience with web application development and intermediate/advanced knowledge of HTML and CSS.
  • Experience with information retrieval and intermediate/advanced knowledge of SQL and/or noSQL database technologies.
  • Experience with distributed or parallel systems and micro services.
  • Working on projects that have been deployed to the public that had high scalability and availability requirements a plus.
  • Interest and ability to learn other coding languages as needed.
  • Working proficiency and communication skills in verbal and written English.

At Gengo, our goal is to continually improve our software products and services while at the same time improving ourselves as software development professionals.  We offer an exciting product development roadmap in the field of AI/machine learning training data and the freedom to research, prototype, and champion new and innovative solutions to challenges along the way.  Your career growth and professional development is crucial to us and we will support you every step of the way.