Junior Web Application Engineer
Review the role details and submit your application.
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Overview
Background
We aim to drive DX (digital transformation) across the entire commercial real estate industry-centered on office real estate-by adopting a multi-product strategy and developing a business with different sets of functions that support our customers’ workflows.
To grow the business through multi-product expansion, each product needs to autonomously and rapidly run hypothesis testing cycles. To achieve this, our development organization forms multiple cross-functional teams of around five members, and we encourage these teams to operate autonomously while pursuing overall optimization.
Example development team:
2 web application engineers
1 product manager
1 designer
1 design engineer
To maximize business value, we are looking for someone who can contribute to maximizing the business value we create as a team member through product development.
Responsibilities
- Develop new features that deliver value to customers
- Resolve technical challenges proposed by engineers and improve implementations using more efficient approaches
- Generate ideas to better leverage large-scale real estate data, run PoCs, and build prototypes
- Launch new products and projects
- Contribute to the team to create compounding value, and drive technical growth and development
- Experience you can gain in this role
- Experience unlocking the value of data buried in a massive market where a single transaction can involve tens to hundreds of billions of yen
- Experience “inventing the future” by working in a rapidly growing organization with highly skilled engineers, leveraging data to solve the challenge of enabling predictions about the future of constantly changing cities
- Experience transforming industry structures by modeling complex, interwoven urban elements-such as buildings, land, and addresses-often considered impossible to normalize, and implementing them within systems
- Experience launching and driving a business as an engineer by adopting new technologies (e.g., GraphQL, generative AI) to solve real business challenges
- Development Environment
- Frontend
- Next.js
- React
- TypeScript
- Backend
- The backend has three environments, depending on the product.
- Common components are extracted as microservices, eliminating any inconveniences caused by language differences.
- GraphQL is used to interface with the frontend.
- Rust + actix-web + async-graphql
- Ruby on Rails
- TypeScript + Node.js + NestJS
- In addition, Python + Streamlit is used as an internal analysis tool.
- Development Tools
- Code Management: GitHub
- CI/CD: GitHub Actions
- Operational Monitoring: Sentry, Datadog
- Task Management: JIRA
- Communication Tools: Slack
- Development Support: GitHub Copilot, Claude Code, etc.
Required Skills
- Hold a degree in Informatics / Computer Science
- Have graduated from a College of Technology (KOSEN)
- Have personal development work that has been publicly released ※
- ※ “Publicly released” means it is published online (e.g., on GitHub, an app store, etc.) and is accessible and usable by users other than yourself.
- Must have the following track record:
- AtCoder: Green or higher (Rating 800+)
- Kaggle: Expert or higher
- Have placed in / received an award in a programming contest
Preferred Skills
- Professional experience in frontend development using JavaScript frameworks (e.g., React, Vue.js, Angular)
- Professional experience in backend development using web application frameworks, etc.
- Development experience using Rust, Ruby, TypeScript, AWS, and related technologies
- Experience launching in-house services, and continuously developing and operating services over time
- Experience in project management and/or serving as a team lead
- Ideal Candidates
- Someone who loves building products and can pursue quality without compromise, from design through implementation
- Someone who doesn’t settle for “it works,” but develops and implements with a strong drive to keep things in the best possible state
- Someone who adapts well to change and can approach tasks with flexibility
- Someone who acts with a team-first mindset and finds joy in achieving results by bringing out the best in each individual
- Someone who isn’t confined by a specific role or domain and wants to collaborate with other teams to create bigger outcomes
Quick Facts
Submit your application for this role at estie.