Job Description

Join Us in Building the Future of Security Learning

We are developing a system that enables people to efficiently and practically gain security knowledge, by personalizing learning based on each individual's skill level and activity history .
Our engineering-driven team is at the heart of this initiative, creating impactful products that make real-world learning more effective.

We're now looking to welcome two new engineers to the core development team driving this mission forward.

Open Positions (1 person each)

① Backend & Infrastructure Engineer

You'll be responsible for building and operating a robust, scalable, and secure infrastructure to support our product-mainly using Python and AWS .

② Product Engineer (Feature & User Experience Focus)

You'll work closely with the PdM and designers to create valuable features from scratch , building experiences that directly improve how users learn and grow.

Why Join Us?

High autonomy in a close-knit team

A nimble team structure where you can take initiative and focus deeply on development.

Fully remote & flexible work style

Work from anywhere, anytime. The only in-person requirement is for occasional team events.

A learning-first culture

We actively support continuous learning with book and exam subsidies , regular internal tech talks, and study groups.

Real impact in the growing field of Security × Education

You'll build a product that contributes directly to society, while expanding both your technical expertise and domain perspective .

What We're Looking For

We welcome candidates with the following skills and experience :

• 4+ years of web application development

• Backend experience in Python or TypeScript

• 2+ years of development using AWS

• 1+ year of experience with IaC tools like Terraform, CloudFormation, or Ansible

• Experience working in Agile or Scrum teams

Experience in security or education is not required-but curiosity and a willingness to learn are highly valued!

Our Tech Stack & Tools

Languages & Frameworks
Python (Django, DRF), TypeScript (Next.js, React)

Infrastructure
AWS (ECS, Lambda, CloudFormation, ECR), Terraform, Docker

Database & Others
PostgreSQL, Redis, Elasticsearch, GitHub Actions, Sentry

AI / LLM
Azure OpenAI

Tools We Use
Slack, Miro, Figma, ChatGPT, Gather, Cursor, etc.

Work Conditions

• Employment type : Full-time (4-month probation period)

• Annual salary : ¥7M-¥12M (based on experience and skills)

• Work style : Fully remote by default (with a Tokyo office), flexible working hours

• Time off : Weekends, national holidays, year-end/New Year, summer break, paid leave, and special leave (e.g., bereavement)

• Benefits :

  • Full social insurance

  • Transportation reimbursement

  • Annual health check (support for full medical checkups)

  • Certification/learning support

  • Internal recognition system

  • Childcare and nursing support

  • Stock ownership plan, and more

Reference Number: 06940-0013263495

By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice . Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.

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