Fullstack Engineer

  • Remote OK - Anywhere in Japan
  • Full-time
  • May 3, 2024
6,000,000 - 12,000,000 JPY /yr
Apply from Japan Only
No relocation to Japan
(No visa sponsorship from overseas)
Language Requirements
Japanese: Business Level
English: Business Level
Minimum Experience
Mid-level or above

Job Overview

Acompany, a privacy tech company specializing in privacy protection technologies and personal information protection, offers "AutoPrivacy," a data infrastructure for integrating personal data. AutoPrivacy is a data infrastructure that allows for data integration while protecting the privacy of personal data. After several pilot tests with multiple partner companies, we began offering this service in August 2023.

In addition to data integration, we are launching several new businesses to solve all issues related to the utilization of personal data.

To support our rapid growth, we seek to expand our team with Full-Stack Engineers who are committed to developing better customer experiences.

"AutoPrivacy" is a product targeted at enterprise companies, necessitating the development of new features for optimization. In this environment, optimizing with a clear division between front-end and back-end is challenging. We aim to maximize customer value and speed up development by having individuals handle a coherent set of features from end to end.

As our service and market grow rapidly, we are recruiting full-stack engineers to continue exceeding user expectations with great products.


Job Responsibilities

  • Developing the front-end/back-end of "AutoPrivacy," equipped for the rapid growth of our business
  • Full-cycle product development based on requirements, including design, implementation, testing, verification, and release
  • Product development focused on thorough domain understanding and addressing customer issues
  • Team development in collaboration with PdM, designers, and other roles
  • Sharing knowledge and practices through engineering community engagements, such as speaking at events and writing tech blogs


Examples of Specific Tasks

  • Participating in the roadmap planning process
  • Engaging in the user experience planning process based on customer needs
  • Specifying, designing databases, coding, and implementing features to meet customer needs
  • Developing user-friendly UI/UX in collaboration with designers
  • Sharing insights and practices obtained during development through blogging


Technical Features of the Product

  • Privacy protection technologies (such as secure computation, differential privacy, and federated learning) are available in the cloud.
  • Capable of processing and coordinating table data ranging from tens of millions to hundreds of millions of records per customer.
  • Advanced security levels required by major corporations.
  • Highly flexible workflow and permission management features.


Technical environment

  • Product development
    • Language: C++, Go, Python, TypeScript, React, Next.js
    • Environment: FastAPI, Hasura, PostgreSQL, Argo Workflow, Google Compute Engine, Google Kubernetes Engine, Cloud Run, Google App Engine, Cloud SQL, AWS EC2, AWS Fargate, Azure VM, Azure Kubernetes Service, gRPC, GraphQL
  • Core technology development(R&D)
    • Language: C++, Python, Julia
    • Environment: gRPC, Bazel
  • Infrastructure
    • CI: GitHub Actions
    • Monitoring Platform: Prometheus, Grafana, Loki, Thanos, Uptime Kuma
    • Environment Configuration: Docker Compose, Kubernetes, Docker, Terraform
    • Infrastructure: GCP, AWS, Azure, On-premises (in-house GPU environment)
  • Other tools
    • Source Code Management: GitHub
    • Documentation: Notion, GitHub
    • Communication: Slack, Discord, Figma


Required Skills


  • Experience in back-end development using statically typed languages (Go, Java, Rust, TypeScript, etc.)
  • Experience in developing and operating front-ends using modern frameworks (such as React)
  • Communication skills in Japanese: Business level or above

(Note: Currently, Acompany's language environment is primarily Japanese)



  • Experience in backend development and operation that requires high security standards for major companies
  • Experience in running container orchestration tools such as k8s in production
  • Award-winning experience in ISUCON (a programming contest focused on improving system performance)
  • Knowledge of data warehouses, data clean rooms, BI tools, and related products, SaaS development, etc.


The Appeal of the Job

Entering a Phase that Accelerates Business Growth!

The foundation of our business in terms of core technology, capital, and customer base is becoming solidified.

  • Success in inventing and modularizing core technology through R&D
  • Completion of fundraising totaling 790 million yen through Series A shares + loans
  • Successful customer acquisition of major companies such as Hakuhodo and CTC

Privacy protection is indispensable for data collaboration between companies, and the larger the company, the more interest they have shown in our AutoPrivacy. Right now, initial market needs are emerging, and our product is starting to grow.

Would you like to join us in tackling the market for privacy protection and data collaboration?


Customize Your Work Style with Full Remote & Flex!

Members are thriving from Hokkaido in the north to Okinawa in the south, all working fully remotely.

With a flex system that allows for flexible working hours from 5 AM to 10 PM, except for the core time from 1 PM to 4 PM, it has become easier to balance work with family and hobbies.

Except for once every four months (three times a year) when we align the company's direction at an offsite meeting, full remote work is possible.

Acompany is a privacy tech company that specializes in technology and risk analysis concerning privacy.

The privacy tech in which Acompany excels includes technologies designed to protect individual privacy, such as enabling computations on encrypted data. We offer a service called "AutoPrivacy", which is a Data Clean Room service.

View Acompany's company page

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Fullstack Engineer at Acompany
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