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Frontend Engineer

5M JPY - ***M JPY

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Tokyo

Full-time (permanent)

Online Interview: Yes

Remote Work from Overseas: No / Remote Work in Japan: No

Top-Selling Points

Rate of Foreigners

Less Than

Frequency of English Usage

Less Than

Short overtime work (less than 20 hours) Japanese learning support Management In-house product development

Related Skills

Programming Language

TypeScript

Library/Framework

React

Language Requirements

Required

Preferred

Job Description

[Recruitment Background]
Following the rapid growth of the "Hayaimon Series," the company is expanding quickly with a view toward an upcoming IPO. As user experience (UX) is a critical factor for business success, the company is seeking a Frontend Engineer capable of delivering high usability and performance using cutting-edge technologies.

[Job Overview]
Mainly responsible for web frontend development using React and Chrome Extension development using TypeScript.

[Key Responsibilities]
・Development tasks: Handle implementation, adding test code, reviews, verification, and releases cross-functionally across the product lifecycle.
・Frontend development: Design and develop interfaces using React/Next.js and Chrome Extensions using TypeScript.
・Product lifecycle: Participate in the planning, design, implementation, testing, measurement, and improvement of both new and existing products/features.
・Problem-solving: Identify and resolve product-related issues.

[Organizational Structure]
・Engineering Manager: 1
・Frontend Engineers: 20 (including 2 also handling server-side)
・Server-side Engineers: 2
・Infrastructure Engineers: 2

[Development Environment]
・Languages: JavaScript, TypeScript, HTML, CSS, Python, Go
・Frameworks/Libraries: React, Next.js, Vue.js, Nuxt.js, Django, FastAPI
・Testing: Jest, pytest
・Infrastructure: AWS (EC2, ECS, AWS Batch, RDS, Aurora Serverless V2, Glue, Athena, API Gateway, Terraform)
・Tools: Notion, QuickSight, Git, Slack, Google Meet, GitHub, GitHub Copilot, Claude Code, CodeRabbit, Figma

[Learning Environment] 
The company hosts internal study sessions twice a week and fully covers expenses for attending conferences outside the prefecture, ensuring employees stay updated on the latest technologies.

[Position Highlights]
・Exercise high autonomy in everything from design to implementation and technology selection.
・Gain hands-on experience across multiple technical layers required for modern web service development.

Required Skills and Experiences

[Mandatory Requirements] ・Practical experience in modern frontend development using TypeScript (familiarity with build environments using tools such as Webpack or Vite). ・Background in developing applications that integrate with Web APIs. [Preferred Requirements] ・Hands-on experience with React-based frameworks. ・Proven track record in developing and releasing web applications. ・Ability to actively participate in discussions regarding technology selection. [Desired Candidate Profile] ・Resonates with our corporate vision and professional style. ・Maintains smooth and effective communication with internal team members.

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Working Condition

[Expected Annual Salary]
4,200,000 JPY - 7,000,000 JPY

[Monthly Salary]
350,000 JPY - 584,000 JPY (Base salary: 266,667 JPY+ / Fixed overtime allowance: 83,333 JPY+ for 40 hours per month. Excess overtime paid separately.)

[Work Location]
Kayabacho Tower 12F, 1-21-2 Shinkawa, Chuo-ku, Tokyo
‐7-minute walk from Kayabacho Station (Tokyo Metro Hibiya Line)
‐8-minute walk from Hatchobori Station (JR Keiyo Line)
‐9-minute walk from Suitengumae Station (Tokyo Metro Hanzomon Line)

[Working Hours]
・Flextime System
‐Core time: 11:00 AM – 3:00 PM
‐Flexible time: Start 7:00 AM – 11:00 AM / End 3:00 PM – 10:00 PM
‐Standard working hours: 8 hours per day (approx. 160 hours per month)
*Average monthly overtime: 14 hours (previous year's result)
・Remote work: 2 days per week for engineers / 1 day per week for business staff

[Holidays and Leave]
・125 annual holidays: Full weekends off (Sat/Sun), public holidays, New Year, and summer leave.
・Paid leave: 5 days granted upon joining, additional 5 days after 6 months.
・Paid leave utilization rate: 81% (previous year's result)
・Others: Based on company calendar.

[Benefits and Welfare]
・Full social insurance coverage
・Commuting allowance
・High-spec office chairs and choice of MacBook Pro or Windows laptop
・Office lounge/kitchen, free drinks, free rice, and subsidized bento lunches
・Monthly recreation events, weekly shuffle lunches, and company trips
・Book purchase allowance (approx. 20,000 JPY/year), support for study groups/conferences, and certification support
・Influenza vaccinations

RECRUITMENT PROCESS

・Casual Interview (Online) ↓
・Document Screening & Online Aptitude Test ↓
・Interview (Online) ↓
・Final Interview (In-person)
*Please note that the selection process is subject to change depending on the position.

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