1,965,612open jobs
116,119companies
248,608added this week
Browse all
Location
Remote (Japan, 10am - 7pm)

Confirmed on the employer's own hiring board on Oct 24, 2026. First seen by Alion on Jul 4, 2025.

Overview
Company
Impact
Profile match
Fast Accounting is a Japanese AI company that researches large language models and AI agents and develops its own AI products for corporate accounting work. Established in June 2016 and listed on the Tokyo Stock Exchange Growth market in September 2023, it serves enterprise clients and hires machine learning engineers, backend engineers, product managers and solution consultants. The company is headquartered in Minato, Tokyo, Japan.
Backed by Global Brain

PD-2E.Machine Learning Engineer (AI Specialist)

Description

We have developed and proposed a cloud service (SaaS) that automates work in the fields of accounting and finance by utilizing AI (deep learning) and combining it with deep learning technology centered on AI-OCR.

This service is attracting a great deal of attention as a service that realizes accounting DX and realizes the way of accounting in the digital and AI age, and opportunities for introduction and business negotiations are increasing dramatically, mainly among enterprise companies.

In September 2023, we listed on the TSE Growth Market and are aiming to further expand our business.

We are looking for new colleagues to strengthen our team to realize continuous improvement of service functions and quality of each product.

◆ Job Description

As a backend engineer (full stack engineers welcome), you will develop AI services specialized in the accounting field developed in-house.

The main in-house developed products are “Robota”, “Remota”, and “Billing (Peppol) platform service”, and there are three major development projects related to them.

1) Web application service to support DXing of accounting tasks by AI

2) AI engine API service to support accounting automation

3) Standard (Peppol) platform service to send and receive electronic invoices from various systems

This position will be involved in all projects and develop common infrastructure areas using AI.

FA is developing in scrum teams, collaborating with in-house research teams (research scientists (CV, NLP)) and related engineers to carry out projects.

◆Main areas of application

- Development of AI programs and implementation of AI models for “Robota,” “Remota,” and “Peppol compatible products

Research related items :

image recognition, natural language processing, document analysis, LLM, research papers, reproduction implementation, deep learning, data analysis

Development related items :

API development, AI model implementation, prototyping

In order to continuously improve system development to enhance experience, quality, and development efficiency, and to improve the development capabilities of the entire team, we never fail to provide technical input and encourage participation in and sponsorship of study groups.

◆Attractiveness of this position

・We have a strong market share in the accounting DX and AIxOCR areas, and are involved in AI development for cutting-edge products.

・We have an in-house research and development department, where we collaborate with excellent research scientists and engineers to build original AI models and develop cutting-edge technologies such as generative AI and self-developed LLM.

・We develop products that are actually used in business. We can utilize abundant data from the business field for development.

Our company culture encourages teamwork, and we provide an open environment where people can work independently and cooperate with each other in a supportive manner without hierarchical relationships.

Let's work together to create and propose the “future” of accounting, which will be realized by cutting-edge technologies such as AI !

Requirements

We have developed and proposed a cloud service (SaaS) that automates work in the fields of accounting and finance by utilizing AI (deep learning) and combining it with deep learning technology centered on AI-OCR.

This service is attracting a great deal of attention as a service that realizes accounting DX and realizes the way of accounting in the digital and AI age, and opportunities for introduction and business negotiations are increasing dramatically, mainly among enterprise companies.

In September 2023, we listed on the TSE Growth Market and are aiming to further expand our business.

We are looking for new colleagues to strengthen our team to realize continuous improvement of service functions and quality of each product.

◆ Job Description

As a backend engineer (full stack engineers welcome), you will develop AI services specialized in the accounting field developed in-house.

The main in-house developed products are “Robota”, “Remota”, and “Billing (Peppol) platform service”, and there are three major development projects related to them.

1) Web application service to support DXing of accounting tasks by AI

2) AI engine API service to support accounting automation

3) Standard (Peppol) platform service to send and receive electronic invoices from various systems

This position will be involved in all projects and develop common infrastructure areas using AI.

FA is developing in scrum teams, collaborating with in-house research teams (research scientists (CV, NLP)) and related engineers to carry out projects.

◆Main areas of application

- Development of AI programs and implementation of AI models for “Robota,” “Remota,” and “Peppol compatible products

Research related items :

image recognition, natural language processing, document analysis, LLM, research papers, reproduction implementation, deep learning, data analysis

Development related items :

API development, AI model implementation, prototyping

In order to continuously improve system development to enhance experience, quality, and development efficiency, and to improve the development capabilities of the entire team, we never fail to provide technical input and encourage participation in and sponsorship of study groups.

◆Attractiveness of this position

・We have a strong market share in the accounting DX and AIxOCR areas, and are involved in AI development for cutting-edge products.

・We have an in-house research and development department, where we collaborate with excellent research scientists and engineers to build original AI models and develop cutting-edge technologies such as generative AI and self-developed LLM.

・We develop products that are actually used in business. We can utilize abundant data from the business field for development.

Our company culture encourages teamwork, and we provide an open environment where people can work independently and cooperate with each other in a supportive manner without hierarchical relationships.

Let's work together to create and propose the “future” of accounting, which will be realized by cutting-edge technologies such as AI !

Preferred Experiences

・Experience in research, writing papers, and presenting at conferences related to machine learning

・Ph.D. in CS field

・Experience in research or development using LLM

・Experience with LLM research and development

・Experience contributing to Open Source Software (OSS)

・Experience in agile product development

We are looking for

・Applicant have to have a passion for development

・Mindset to actively contribute Applicant’s experience to the team.

・Mindset to adopt new technologies

・Those who value working in a team-oriented environment.

・Those who can feel the value of accomplishing a big task.

  • Our Values

We value the following ideas. We place great importance on the following five keywords in our selection process.

- Can Do Attitude: Always looking for ways to do things

- Trust: We trust each other and also earn the trust of our customers.

- Teamwork: There is only so much one person can do. We work as a team to support each other to accomplish our mission.

- Passion: To succeed, you must be passionate about what you do.

- Move Fast: To succeed, it is essential to move fast.

Working Conditions

Salary

Annual salary: 7 million yen to 12 million yen

*The above is a general guideline. We will determine the amount in consideration of your experience, skills, and current salary.

*Includes 45 hours/month of deemed overtime.

(Fixed overtime: 146,321 yen/month *for 7 million yen/year). Overtime in excess of the above will be paid.

Location

Shiba Park Building A, 3F, 2-4-1 Shiba-Koen, Minato-ku, Tokyo

*5 minutes walk from Hamamatsucho Station on JR Line, Daimon Station and Shibakoen Station on Toei Line.

Job Type

permanent employee

Work hours

◆Working Hours and Work Style

・Working hours: 9:30-18:30, in-office work

◆Holidays and leave

・Weekends off (Saturdays and Sundays), Japanese national holidays

・Summer vacation (3 days; the number of days may vary each year depending on company policy)

・Long-Service Recognition Leave (additional paid leave granted based on tenure, with up to one month available)

・Year-end/New Year holidays (generally December 29 - January 3; the number of days may vary each year depending on company policy)

・Paid leave, caregiver leave (paid leave separate from annual paid leave), nursing leave (paid leave separate from annual paid leave), condolence leave, menstrual leave, special prenatal leave, etc.

*Nursing leave can be used not only when caring for a child under 12 due to illness, but also for school-related events such as entrance ceremonies, graduation ceremonies, and other school functions.

◆Smoking Policy

Smoking is prohibited indoors

Probation period

Trial period: 3 months (As a general rule, three months from the date of joining the company. However, it may be extended up to a maximum of six months.)

Benefits

◆Insurance

Various social insurances (health insurance, employee's pension, unemployment insurance, workers' accident compensation insurance)

(health insurance, employee pension, unemployment insurance, workers' accident compensation insurance)

◆Benefits

・Transportation expenses are paid (up to a maximum limit).

・Trust stock option plan

・ESPP(Employee Stock Purchase Plan)

・MVP Award (half year), President's Award

・Support for purchase of technical books

・Certification exam fee subsidy

・Incentive program for obtaining certifications

・Influenza vaccination subsidy

・Free dress code

・Social gatherings (once a month at the company's expense, held at the Tokyo and Fukuoka offices)

◆Other amenities

・Free drinks (mineral water, coffee)

・A weekly banana delivery is provided to the office

Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
1,965,612 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

AI/ML
Similar stack
Same company
Minato
AI Engineer 1 hour ago
≈ $19k – $39k per year (Estimated) • Remote (India) • 4+ years exp • India
Python
JavaScript
Node JS
Databases
Neo4j
Apache Iceberg
FAISS
OpenSearch
AI/ML
LangGraph
LangChain
Multimodal AI
AI Agents
Ray
Agentic Workflows
Apply
GenAI Architect 5 hours ago
≈ $152k – $305k per year (Estimated) • Remote (United States) • Full-Time
AI/ML
OpenAI
Frontend
GraphQL
DevOps
Rest API
Azure
CI/CD
Apply
$120k – $240k per year • Remote (United States) • Contractor
Python
AI/ML
Machine Learning
Apply
≈ $51k – $131k per year (Estimated) • Remote (Brazil) • Brazil
AI/ML
LangGraph
LangChain
Claude
LlamaIndex
Embeddings
Function Calling
AI Agents
LangSmith
Semantic Kernel
AWS Bedrock
Gemini
LLM
RAG
Reranking
OpenAI
Anthropic
OpenAI Agents SDK
AWS Strands Agents
GraphRAG
Human-in-the-Loop
Knowledge Graph
LLM Guardrails
Multi-Agent Systems
DevOps
OpenTelemetry
Datadog
Azure
CI/CD
AWS
Docker
GitHub
Apply
≈ $12k – $32k per year (Estimated) • Remote (India) • 2+ years exp • India
Python
Rust
SQL
AI/ML
XGBoost
Fine-tuning
Scikit-learn
Prompt Engineering
AI Agents
NumPy
LLM
Machine Learning
Apply
≈ $25k – $60k per year (Estimated) • Hybrid • 1+ year exp • Moscow
SQL
Databases
PostgreSQL
AI/ML
Function Calling
LLM
OpenAI
DevOps
Rest API
gRPC
WebSockets
CI/CD
Git
Docker
Linux
Apply
up to $46k per year (gross) • Hybrid • Full-Time • 3+ years exp • Moscow
Python
Bash
DevOps
Terraform
Ansible
VMWare
Proxmox VE
Hyper-V
CentOS Stream
Linux
Astra Linux
DNS
VLAN
Management
Agile
Scrum
Kanban
Apply
≈ $25k – $66k per year (Estimated) • In office • Bengaluru
Python
Python
FastAPI
Databases
PostgreSQL
Redis
AI/ML
LangGraph
LangChain
Model Context Protocol
Prompt Engineering
AI Agents
LLM
RAG
Human-in-the-Loop
Knowledge Graph
LLM Guardrails
Multi-Agent Systems
DevOps
AWS
Docker
Apply
≈ $26k – $60k per year (Estimated) • Hybrid • Full-Time • 3+ years exp • Moscow
Management
Scrum
Apply
$13k per year (net) • Remote (EAEU) • 2+ years exp • Samara
JavaScript
PHP
SQL
PHP
Bitrix
DevOps
Rest API
Management
Agile
Scrum
Apply
$45k – $78k per year • In office • Full-Time • Tokyo
Python
AI/ML
MLFlow
NLP
TensorFlow
PyTorch
LLM
Hugging Face
DevOps
Rest API
Datadog
AWS
Docker
GitHub
Management
Confluence
Apply
$45k – $78k per year • In office • Full-Time • Tokyo
Python
Go
TypeScript
AI/ML
LLM
OCR
DevOps
Docker
Kubernetes
Apply
$45k – $71k per year • In office • Full-Time • Tokyo
AI/ML
LLM
Apply
$45k – $78k per year • In office • Full-Time • Tokyo
AI/ML
LLM
Management
Confluence
Apply
$45k – $71k per year • In office • Full-Time • Tokyo
AI/ML
LLM
Apply
In office • Full-Time • Minato
AI/ML
Fine-tuning
Quantization
Knowledge Distillation
Transfer Learning
Transformers
PyTorch
LLM
Pre-training
Interpretability
Model Distillation
Machine Learning
DevOps
GCP
AWS
Apply
≈ $77k – $176k per year (Estimated) • In office • 5+ years exp • Minato
Apply
≈ $60k – $143k per year (Estimated) • In office • 7+ years exp • Minato
Apply
In office • Master's Degree • Minato
Apply
≈ $56k – $130k per year (Estimated) • In office • Minato
Apply
See all jobs
This is one of many
1,965,612 more open roles from verified company boards, updated every day.