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【★Senior Backend Engineer (Go)】No.1 Cloud Contract Management Platform / Full-remote / JLPT N1 Level~

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Japan
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Relocation support
Posted
Sep 30, 2026
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★Senior Backend Engineer (Electronic Contract Service)

  • Business Level Japanese Required


◆ Fully Remote Work

◆ Listed Company

◆ In-house Products/Services

◆ Great Welfare

◆ Annual salary: 7 million yen - 12 million yen


-------------【About the company】-------------


The company's philosophy is to create a society where people all over the world can freely utilize "wisdom to live better = intellectual information" and to create a society where people can live happily.

It provides a wide range of services, including different portal sites and the Web-based cloud contract service.


-------------【 Job Description】-------------


【About the Service】

The service is a Contract Management Platform that enables contracts to be seamlessly and entirely digitized, from execution to management and AI review. It allows for smooth and secure contract execution through electronic signatures and time stamps compliant with the Electronic Signature Act. In 2023, it became the first general-purpose electronic contract service in Japan to launch a 'My Number Card Signature' feature. Furthermore, by actively adopting AI technology, such as AI contract management and AI review support services, it achieves overall time reduction in contract operations. It is the No. 1 service in the electronic contract market, widely adopted by companies and local governments.*


*Source: Fuji Chimera Research Institute, Inc., "Software Business New Market 2023 Edition" (Electronic Contract Tool FY2022 results), Market Share.


【Introduction to the Recruiting Department】

Development Division, Product Engineering Department, Engineer Team


This team is responsible for the development of the Contract Management Platform. They drive product development—including new feature development and feature improvements—by collaborating with the business division.


【Recruitment Background】

The service has surpassed 2.5 million implemented client companies and holds the No. 1 market share in Japan. Expectations from the market are extremely high, particularly for expanding features for enterprise clients and supporting government digitalization. As the service grows daily into a critical, indispensable platform for customers' operations, strengthening the engineering organization is necessary. The company is recruiting a Backend Engineer to lead the future growth of the service.


【Your Role】

You will be responsible for backend development within the Contract Management Platform.


You will tackle technical challenges associated with business growth, in addition to development duties such as various feature development related to electronic contracts, architectural improvement, and security enhancement. Furthermore, it is expected that you will gain a complete understanding of the service's overall architecture and then specialize in a particular domain, where you will technically lead the team.


■Responsibilities

・Service requirements definition, design, and implementation.

・Project promotion to ensure smooth releases.

・Refactoring.

・Code review.

・Support for Customer Support.

・Service improvement and operation.

・Improvement and optimization of business processes.

Based on their aspirations, the individual can also be involved in the following tasks:

・Resolution of technical challenges, long-term technical selection, and formulation/execution of technical strategy.

・Development leadership.

・Talent development (promoting member growth from a technical perspective).


■Development Structure and Methodology

Product development is carried out by Scrum teams composed of members spanning various functions, including engineers, designers, and PdMs (Product Managers).

Each team is organized with about 10 members and proceeds according to its respective development theme, such as feature development or engineering improvement (backend/frontend).


【Development Environment】

Backend: Go/Revel/gorilla/gorm

Frontend: Vue.js/Nuxt.js/JavaScript/TypeScript/jQuery/Sass

Infrastructure: AWS (ECS, RDS, Lambda, S3, Redis, SES, SNS, SQS, ELB, etc.)

Database/Data Store: Aurora

Project Management: JIRA

Source code management: GitLab

CI/CD: GitLab CI / AWS CodeDeploy

Information sharing: Slack/Google Workspace/esa.io


■ Work Environment

MacBook Pro

Preferred Editor (paid options acceptable)


-------------【 Requirements】-------------


【Required】

Experience in backend development using modern technologies (5+ years)

1+ years of experience working on a single product


【Preferred】

Experience developing proprietary services

Experience as an infrastructure engineer in an AWS environment

Experience implementing and operating products requiring high-level security

Experience as an OSS committer

Experience in roles such as development team leader or Tech Lead

Experience as a Scrum Master or Agile Coach

Experience in team member development and management


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【Welfare】


■Housing Allowance: An allowance of up to ¥30,000 is provided to employees whose home is located less than 2km (straight-line distance) from the company office.


■Employee Stock Ownership Plan


■Defined Contribution (DC) Pension Plan


■Club Activity Subsidy System: Various clubs are organized internally to deepen interaction among employees. The company provides a partial subsidy for activity expenses when employees belong to a circle and actively participate.


■Regular Social Gatherings: To foster employee interaction, the company hosts gatherings such as a Beer Bash (held internally on a Friday once a month) and General Employee Meetings (held at an external venue with all employees present).


■Shuffle Lunch: To deepen employee interaction, once a month, the company subsidizes lunch for groups of 4-5 randomly selected employees. The company provides a subsidy of ¥1,500 per person for the lunch expense.


■Resort Support System: A system allowing employees to stay at a private, membership-based resort hotel, with access to diverse facilities such as hot springs, sports, and restaurants.


■Internal Commendation System: A system used during General Employee Meetings to recognize employees who embody excellence and serve as role models (e.g., MVP awards).


■Real Estate Brokerage Fee Discount: Employees relocating receive a discount on brokerage fees if they use the real estate agency with which the company has a corporate contract.


■Babysitter Expense Subsidy: Expenses are subsidized for employees who need to use a babysitter to attend internal events, starting with the regular social gatherings.


■Book Purchase System: The company covers the cost of purchasing books, provided certain conditions are met.


■Side Jobs (Fukugyo) Allowed: Side jobs are permitted upon approval.


■PC Provision: The standard PC provided is a MacBook Air. (MacBook Pro is provided to creative roles such as engineers and designers.)


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