700Junior Web Application Engineer | Developing Innovative Features for Customer Value

Working with modern technologies such as React Rust and GraphQL you will be part of a small highly autonomous team that rapidly delivers products to market. This is an excellent opportunity to sharpen your technical skills while developing services that have a meaningful impact on society.

Job Description

You will work within a cross-functional team of approximately five members including engineers product managers and designers with a shared goal of maximizing product value.

Key Responsibilities

• Develop new product features that deliver value to customers
  

• Improve system architecture and implementation to resolve technical challenges and enhance performance
  

• Build proof-of-concepts (PoCs) and prototypes utilizing real estate data
  

• Launch new products and strategic projects
  

• Contribute to improving the teams technical capabilities and maximizing business impact
  

Technology Stack

Frontend

• 
  

• React
  

• TypeScript
  

Backend

• Rust Actix Web Async GraphQL
  

• Ruby on Rails
  

• TypeScript NestJS
  

Analytics & Data Tools

• Python
  

• Streamlit
  

Development Tools

• GitHub
  

• GitHub Actions
  

• Sentry
  

• Datadog
  

• JIRA
  

• Slack
  

• GitHub Copilot
  

• Claude Code
  

About the Company

Our mission is "Unlocking the True Potential of Industries."

We are a rapidly growing startup building the data infrastructure for the real estate industry.

By collecting structuring and managing one of Japans largest office real estate datasets we have developed multiple SaaS products powered by proprietary data assets. Our goal is to transform a traditionally analog industry into a data-driven ecosystem.

As our business expands and our product portfolio continues to grow strengthening our data infrastructure has become a critical factor in our future success. We offer an opportunity to work in a fast-paced environment where technology and large-scale data are used to reshape an entire industry.

Why Join Us

• Build products powered by one of Japans largest real estate datasets
  

• Work with modern technologies including React Rust and GraphQL
  

• Gain experience maximizing product value within a small autonomous team
  

• Apply emerging technologies such as Generative AI to real-world business challenges
  

• Help model urban and real estate data to create products that transform industry structures
  

• Contribute directly to the digital transformation of one of Japans largest markets
  

Requirements

Required Qualifications

Candidates must meet at least one of the following criteria:

• Hold a degree in Computer Science Informatics or a related field
  

• Graduate of a College of Technology (KOSEN)
  

• Have publicly available personal software development projects (e.g. GitHub portfolio open-source contributions independent applications)
  

• Demonstrate outstanding technical achievements through one of the following:
  

  • AtCoder Rating of 800 or higher (Green rank)
    

  • Kaggle Expert or above
    

  • Award-winning experience in programming competitions or hackathons
    

Preferred Qualifications

• Frontend development experience using modern JavaScript frameworks such as React Vue or Angular
  

• Backend development experience using web application frameworks
  

• Hands-on experience with technologies such as Rust Ruby TypeScript and AWS
  

• Experience launching and developing proprietary products or services
  

• Experience in continuous product development operation and maintenance
  

• Project management and/or engineering team leadership experience
  

Ideal Candidate Profile

• Passionate about software craftsmanship and committed to excellence from design through implementation
  

• Strives not only to build functional solutions but to create the best possible solution
  

• Adaptable and comfortable working in rapidly changing environments
  

• Enjoys collaborating in a team-oriented culture and contributing to collective success
  

• Motivated to work across functions and disciplines to create meaningful business and societal impact
  

Benefits

Compensation

• Annual Salary: Up to JPY
  

• Opportunity for salary reviews and promotions twice per year based on performance
  

Location

• Tokyo Midtown Akasaka Minato-ku Tokyo
  

• Hybrid work arrangement available
  

• Candidates are expected to reside within the Greater Tokyo Area (Tokyo Kanagawa Saitama or Chiba) with a commuting distance of approximately 90 minutes or less
  

Working Style

• Discretionary Labor System
  

• Flexible Working Hours (Flextime)
  

Holidays & Leave

• 125 annual holidays per year
  

• Weekends (Saturday and Sunday) and national holidays off
  

• Summer vacation
  

• Welcome Leave (special paid leave granted upon joining)
  

• Year-end and New Year holidays
  

Benefits

• Stock Option Program
  

• Housing Allowance and Relocation Assistance
  

• Book Purchase and Professional Certification Support
  

• Subsidies for Training Programs Workshops and Industry Conferences
  

• Comprehensive Social Insurance Coverage