Careers

Delivering trustworthy AI systems to the world.
Join the team creating the future of AI through the power of data.

Where Data Meets Discovery

Our Mission

To continuously create high-quality AI data that leads technological innovation.

Our Vision

We want to create a world where anyone can take on challenges by establishing an environment where necessary data is accessible.

To that end, APTO focuses on the AI data business as a source of innovative discovery.

Our Values

Fearlessly
Discover and
Act
Hungry for
Knowledge and
Experience
Maximize
Organizational
Power
Face Sincerely
and Exceed
Expectations

Our BenefitsSupporting Team Growth and Happiness

Health & Wellbeing
  • Complete social insurance (Health, Welfare Pension, Employment, Workers' Comp)
  • Health checkup / Comprehensive medical exam aid (Once a year, fully covered)
  • Mental health support & counseling services
  • Fitness gym subsidy (up to 5,000 JPY/month)
  • Staff cafeteria, free drinks, snacks provided
Growth & Career
  • Book purchase subsidy (Unlimited, work-related)
  • Conference/Seminar support (Domestic & International)
  • Qualification support (Exams & Learning costs)
  • Internal study sessions / LT events (Weekly/Monthly)
  • 1 on 1 Meetings & Career Consultation (Monthly)
Work-Life Balance
  • Flex-time system (Core time 10:00-15:00)
  • Remote work available (2-3 days/week, varies by role)
  • Full 2-day weekends (Sat/Sun/Holidays), 125 annual holidays
  • Paid leave (15 days first year, max 20), 75%+ uptake rate
  • Refresh leave, Summer leave, Year-end/New Year leave
Family & Childcare
  • Maternity/Paternity leave (Track record of use by all genders)
  • Shortened working hours for childcare (Until child finishes elementary school)
  • Childcare facility subsidy (up to 30,000 JPY/month)
  • Nursing care leave & shortened hours
  • Family allowance (10-20k JPY per spouse/child)
Housing & Commute
  • Rent subsidy (30-50k JPY/month)
  • Moving expense subsidy (Upon joining)
  • Full transportation reimbursement
Equipment & Environment
  • Latest PC & Display provided
  • Remote work equipment subsidy
  • High-performance GPU server access
Rewards & Evaluation
  • Industry-leading salary standards
  • Stock Option plan
  • Bonuses (2x/year) & Salary Review (1x/year)

Open PositionsPositions Available

Biz

BizDev/Solution Sales (AI Data Platform)Business Development
Job Description
You will be responsible for business development and solution sales for APTO's AI data platform "harBest". You will handle everything from proposing data strategies to implementation support for AI development departments of major enterprises.
  • New business development for enterprise clients
  • Hearing and proposal of data requirements in AI development projects
  • Planning and estimation of custom solutions
  • Promoting collaboration with partner companies
  • Sales strategy planning based on market analysis and competitive research
Requirements
  • 3+ years of B2B sales experience
  • Sales experience in IT/SaaS industry
  • Track record of new client acquisition
  • Interest in AI or data-related services
Employment & Treatment
  • Type: Full-time
  • Salary: 8M - 18M JPY (Determined based on experience/skills)
  • Location: Shibuya, Tokyo (Remote work available)
  • Hours: Flex-time (Core time 10:00-15:00)
Customer SuccessCustomer Success
Job Description
Support the success of customers who have implemented the harBest platform. From onboarding to continuous utilization support and upsell proposals, you will accompany the success of the customer's AI project.
  • Onboarding support for new customers
  • Regular business reviews & utilization monitoring
  • Hearing customer issues and proposing solutions
  • Feedback to the product team
  • Contract renewal & upsell proposals
Requirements
  • 2+ years of Customer Success or client-facing experience in IT
  • Data analysis & problem-solving skills
  • Project management experience
Employment & Treatment
  • Type: Full-time
  • Salary: 6M - 10M JPY (Determined based on experience/skills)
  • Location: Shibuya, Tokyo (Remote work available)
Marketing OperationsMarketing Operations
Job Description
Responsible for overall operations of APTO's marketing activities. You will handle a wide range of tasks from lead generation to nurturing and event management.
  • Operation of Marketing Automation tools
  • Lead management & scoring design
  • Planning and operation of webinars/events
  • Content marketing promotion
  • Management & reporting of marketing KPIs
Requirements
  • 2+ years of B2B marketing experience
  • MA/CRM tool operation experience
  • Data analysis & reporting skills
Employment & Treatment
  • Type: Full-time
  • Salary: 6M - 10M JPY (Determined based on experience/skills)
  • Location: Shibuya, Tokyo (Remote work available)
Head of Corporate Management (CFO Candidate)Head of Corporate Management
Job Description
As the person in charge of IPO preparation, you will oversee accounting, finance, legal, and general affairs. We expect you to participate in management as a CFO in the future.
  • Overall supervision & promotion of IPO preparation
  • Management of accounting and finance departments
  • Construction of internal controls & corporate governance
  • Fundraising & investor relations
  • Negotiation with auditing firms & securities companies
  • Participation in management meetings & reporting to executives
Requirements
  • IPO preparation experience or accounting/finance experience at a listed company
  • Management experience in accounting/finance departments
  • CPA qualification or equivalent expertise
  • Experience working in a startup environment is a plus
Employment & Treatment
  • Type: Full-time
  • Salary: 8M - 15M JPY (Determined based on experience/skills)
  • Location: Shibuya, Tokyo
  • Stock options available

Dev

AI Data Research EngineerAI Data Research Engineer
Job Description
R&D for improving data quality required for AI model training. Catch up with the latest AI technology trends while working on automation and efficiency of data annotation.
  • R&D of data quality evaluation methods
  • Development of annotation automation tools
  • Dataset design for LLM/Multimodal AI
  • Survey of academic papers & internal knowledge sharing
  • Data design support in client projects
Requirements
  • Practical or research experience in ML/Deep Learning
  • Development experience with Python, PyTorch/TensorFlow
  • Data analysis & preprocessing experience
  • Ability to read English papers
Employment & Treatment
  • Type: Full-time
  • Salary: 6M - 15M JPY (Determined based on experience/skills)
  • Location: Shibuya, Tokyo (Remote work available)
AI Data Platform EngineerAI Data Platform Engineer
Job Description
Responsible for development and operation of "harBest", APTO's AI data platform. Wide range of tasks from designing large-scale data processing infrastructure to developing annotation tool features.
  • Backend/Frontend development of harBest platform
  • Design & implementation of large-scale data processing pipelines
  • Feature development of annotation tools
  • Infrastructure construction & operation using AWS/GCP
  • Construction of MLOps pipelines
Requirements
  • 3+ years of Web application development experience
  • Backend/Frontend development experience with Python, TypeScript, etc.
  • Experience using cloud services (AWS/GCP)
  • Database design & operation experience
Employment & Treatment
  • Type: Full-time
  • Salary: 6M - 15M JPY (Determined based on experience/skills)
  • Location: Shibuya, Tokyo (Remote work available)

Our TeamTeam Members

CEO & Co-founder
Ryo Takashina
Engaged in infrastructure backend development in various industries. After becoming a freelancer, worked on backend development for a major HR company. Founded APTO in Jan 2020 after realizing data challenges in AI development.
COO
Yoichi Karino
Graduated from Rikkyo University. After working at a general publishing company and a cybersecurity company, joined APTO in 2022. Assumed current position in 2024. Supports solving corporate AI challenges starting with data.
Co-founder / CDO
Shunsaku Endo
Won numerous awards at internal competitions at Vantan Game Academy. Interested in AI development, co-founded APTO in Jan 2020. Currently manages both development and business as CDO.
Software Engineer
Jeongmyeong Lee
From South Korea. Gained extensive experience as a software engineer at venture companies, startups, and global enterprises. Joined APTO in 2025, working on product development.

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FAQsFrequently Asked Questions

About Hiring & Selection

Can I apply without any experience in AI?
Yes, it is possible. In the interview, we focus more on your experience in non-AI areas. Regarding AI, we mainly evaluate your attitude towards interest and learning for catching up after joining the company.
What is the selection process like and how long does it take?
Depending on the position, we anticipate 2 interviews. If arrangement of the position occurs while judging aptitude during selection, additional interviews may be conducted to prevent mismatch. The duration is about 4 weeks from application to offer, depending on the number of interviews.
Can I apply even if I'm not thinking of changing jobs immediately?
Yes, we can conduct only a casual interview. Please state so in the "Message to the applicant" on the application page.
Are interviews online?
The final selection may be offline, but basically, we complete it online.

Working Style

Can I work remotely?
Remote work is available. To facilitate communication and collaboration, we encourage coming to the office as much as possible (typically 2-3 days a week).
What benefits does APTO offer?
We plan to expand further, including granting SO, to make it easier for employees to work.
◾️Holidays & Vacation
  • Annual paid leave
  • Weekends & Holidays
  • Summer vacation
  • Year-end and New Year holidays
  • Congratulatory and condolence leave
  • Maternity/Paternity leave
  • Childcare leave
  • Menstrual leave
◾️Benefits
  • Complete social insurance
  • Full transport reimbursement
  • Health checkup
  • Influenza vaccination
  • Book purchase cover
  • Conference fee cover
  • Internal study sessions
  • Internal team dinner support
  • 1on1
  • Free drinks
  • Monitor lending

Data that sparks innovation

Unlock new possibilities for your business with APTO's AI data.
Feel free to get started by requesting our materials.