Jobs | Engineering Jobs in Japan

Backend 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

Library/Framework

Django

Programming Language

Go Python

Cloud / Infrastructure / DevOps tools

AWS Terraform

Language Requirements

Required

Preferred

Job Description

[Business Overview] 
The company develops and operates the "Hayaimon Series," a suite of 13 Real Estate Brokerage DX SaaS products. These solutions automate manual onsite tasks such as property data entry and vacancy confirmation. With implementation in over 3,500 stores nationwide, the company holds a top-tier market share and drives digital transformation across the industry.

[Recruitment Background]
Driven by the rapid growth of the "Hayaimon Series," the company is strengthening its organizational structure and product reliability in preparation for a future IPO. To achieve further business expansion and improved scalability, the team is seeking a server-side engineer to take ownership of product evolution.

[Job Overview]
Solve diverse product development challenges through technical expertise. Beyond server-side implementation, the successful candidate is expected to handle frontend tasks (React, Chrome Extensions) and take ownership of the entire process through to feature release.

[Key Responsibilities]
・Designing and implementing APIs for new "Hayaimon Series" features based on business strategy.
・Designing, developing, and operating Web APIs using Django and FastAPI.
・Managing database design and query optimization.
・Improving service reliability through monitoring, logging infrastructure, load balancing, and resolving technical debt.
・Contributing to technology selection and architectural design to support product growth.
・Developing frontend components using React/Next.js and Chrome Extensions.
・Addressing security vulnerabilities and ensuring system safety.

[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]
・High level of autonomy to participate in everything from design to implementation.
・Opportunities to contribute directly to technology selection.
・Ability to work across the full stack, bridging the gap between backend (Python/Django) and frontend development.

Required Skills and Experiences

[Mandatory Requirements] ・Over 3 years of professional experience in server-side development using full-stack frameworks such as Django (open to any programming language). ・Solid understanding of Relational Database (RDB) concepts and operations. ・Foundational knowledge of web application security. [Preferred Requirements] ・Hands-on experience developing microservices architectures using Go or Python. ・Background in development and operations utilizing AWS (EC2, ECS, RDS, API Gateway, etc.). ・Experience in infrastructure construction and management using Terraform. ・Familiarity with building and operating data analysis foundations using AWS Batch, Glue, or Athena. [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]
5,000,000 JPY - 7,000,000 JPY

[Monthly Salary]
416,000 JPY - 584,000 JPY (Base salary: 316,952 JPY+ / Fixed overtime allowance: 99,048 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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