Backend Engineer

THECOO

Backend

JavaScript

Node.js

About this role

The Backend Engineer will develop and operate server-side features for Fanicon, THECOO’s fan-community application. Responsibilities include building and improving core functions, identifying service improvements, testing hypotheses and measuring results, and discussing requirements and specifications with product managers to solve product issues. The role may also extend from backend development into infrastructure according to the engineer’s interests and strengths.

Fanicon is a closed, monthly membership application for icons and their core fans. It began in December 2017 and had approximately 2,300 communities and 180,000 fans as of March 2022. The product is being expanded from its current 10-to-100 growth phase, with feature updates released approximately every one to one and a half months.

Applicants must have either taken a server-side application from development through release as a lead engineer or central member of a development team, or worked as a server-side engineer in agile development while discussing work with a product manager through development and release. Welcome experience includes scaling systems in high-load environments, implementing payment systems using IAP or IAB, developing iOS, Android, or web clients, implementing live servers using HLS, developing and operating services of a certain scale, converting abstract requirements into systems, and collaborating with product managers or designers.

The stated technology environment includes GCP and AWS for infrastructure; JavaScript and Node.js; MySQL, BigQuery, and Redis; and Slack and Notion as development support tools. Agile development is used. The development team shares user feedback with product managers and works with a user-focused product perspective. Cross-department study sessions are held irregularly, and communication takes place through Slack and Zoom.

This is a permanent full-time position in Shibuya, Tokyo. Most members work remotely, while engineers have discretion over where and when they work and may also work from the office. The working system is a specialized discretionary work system. The annual salary range is 7,000,000 to 12,000,000 JPY, with an annual salary review, a settlement bonus, and a six-month probationary period that may vary by hiring grade.

Benefits include social insurance, commuting expenses, influenza vaccination, babysitter-ticket assistance, support for study sessions, training and books, freee welfare benefits, and full support for installation and usage fees for a company-designated high-speed home internet connection. Holidays include a two-day weekend on Saturdays, Sundays and public holidays, year-end and New Year holidays, annual paid leave, bereavement leave, sick leave, and special leave such as marriage, parental, caregiving and vaccination leave. The selection process consists of document screening, a first interview, a second interview, a final interview and an offer, with flexibility according to the selection situation.

This is an AI-generated summary of the employer's original posting — details can be incomplete, out of date or simply wrong. Always confirm everything on the official posting before applying.