Senior Backend Engineer (Architect)

★Senior Back End Engineer (Architect)

• Business Level Japanese Required (N3 OK)

◆ Flextime & Hybrid Work

◆ In-house SaaS Products

◆ Annual Salary： 7 million ～ 9 million yen.

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

【About the Company】

The company aims to transform "work"—which occupies the majority of one's life—into something inherently more meaningful. It believes that by expanding one's potential through work and connecting with people and society, life as a whole becomes richer.

The vision the company strives to realize is a society where individuals feel excitement and a sense of fulfillment through their professional lives. It believes that the accumulation of these experiences adds color to people’s lives and ultimately leads society in a better direction. Driven by this philosophy, the company provides its own products and culture to expand "options and possibilities in work," making every day more enriching.

【Business Overview】

The company provides products designed to improve the way people work, with a specific focus on the meeting experience. Regardless of whether a team works in-office, in a hybrid model, or fully remote, the company believes that the key to improving work styles lies in "meetings," and has supported many organizations in transforming their corporate cultures.

In recent years, the company has also focused on developing AI-powered meeting scheduling functions and creating new office experiences through robot integration. The business continues to expand with the goal of building environments where everyone can feel excited and inspired while they work.

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

◤Recruitment Background

The company aims to redefine the essence of "work," transforming it into a more meaningful and exciting activity. Their workstyle platform is a SaaS product that supports diverse working styles—such as meeting room management, hot-desking, and remote work—to realize a "seamless workstyle" independent of location or circumstances. Starting with the "meeting experience" as a point of departure, the company is challenging itself to fundamentally upgrade the quality of how we work.

Due to the expansion of the product and a growing user base, the scope of technical challenges is broadening significantly, ranging from improving existing features and developing new functions to a complete architectural overhaul. To navigate this phase of change and growth, the company is seeking a Senior Backend Engineer who can lead both the team and the product from a technical perspective.

The development team does not merely "build features"; it pursues "Full-Cycle Engineering," where engineers are consistently involved in everything from problem discovery and product value validation to improvement proposals. The company welcomes those who want to challenge themselves by developing products that deliver intrinsic value while remaining close to both the business and its users.

◤Responsibilities

・Feature & Product Development: Organizing requirements for new features and products, followed by server-side design and implementation.

・Server-side Issue Resolution: Identifying technical bottlenecks or architectural challenges on the server side and leading the initiatives to solve them.

・Promotion of CI/CD: Driving continuous integration and deployment practices to ensure stable and efficient development cycles.

・Technical Leadership & Mentorship: Facilitating technical decision-making and empowering the growth of team members through professional guidance and mentorship.

■Technical Stack

・Go

・Ruby on Rails

・gRPC

・PostgreSQL

・AWS

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

Required

・Experience in server-side development and operations for large-scale web applications

・Development experience using cloud infrastructure such as AWS

・Experience developing web APIs

・Understanding of statically typed languages such as Go or C#

・5+ years of experience in web application development

Preferred

・Development experience using Go (including personal projects)

・Architecture design considering non-functional requirements

・Development experience using Ruby on Rails

・Experience as a team leader or manager

・Development experience and knowledge of DDD and Clean Architecture

・Experience and knowledge of refactoring

・Experience improving CI/CD and operational design

・Experience with incident response and troubleshooting

・English proficiency

Ideal Applicants

・Empathy with the copany's VISION, MISSION, and VALUES

・Able to discuss technology selection and optimal technical solutions

・Understands business goals and priorities, and collaborates with the team to achieve them

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【Working Time 】

Flextime System

【 Welfare 】

◆Standard Benefits

・Commutation Allowance: Reimbursed based on actual travel expenses.

・Comprehensive Social Insurance: Includes Health Insurance, Welfare Pension, Employment Insurance, and Industrial Accident Compensation Insurance.

◆Internal Systems

・Remote Work System: Support for flexible working locations.

・Flex-time System: Core hours and flexible start/end times.

・PC Selection: Choice between Mac or Windows laptops.

・Professional Development Support: Subsidies for attending study sessions, seminars, and training programs.

◆Allowances by Work Style

The company offers specific allowances tailored to the work style (O-type, H-type, or R-type) chosen by the employee:

・"Taimatsu" (Torchbearer) Allowance: 30,000 JPY / month

・For O-type (Office-based) employees who work from the office 4+ days a week and take the lead in driving company culture from the physical workspace.

・Practice & Spread Allowance: 10,000 JPY / month

・For H-type (Hybrid) and R-type (Remote) employees to support their efforts and practices in maximizing productivity within a remote environment.

・Relocation Allowance: (Upon switching to O-type)

・Support for moving expenses when transitioning from R-type to O-type.

・200,000 JPY for single employees / 400,000 JPY for those with families.

・Lunch: (Available to all types

・Company-sponsored weekly lunch meetings held at the office to foster team communication.

*Note: Specific allowances vary based on the selected work style (O/H/R). Further details will be provided during the interview process.

【 Holiday 】

• Saturday/Sunday/National Holiday
• Annual Paid Leave
• New Year Holiday
• Summer Holiday