Web Application Engineer (New graduates)

  • Tokyo
  • Partial Remote
  • Full-time
  • January 15, 2024
5,040,000 JPY or more/yr
Apply from Japan Only
(You must live in Japan to apply)
Language Requirements
Japanese: Conversational
English: Business Level
Minimum Experience
New Grad or above

Web Application Engineer (new graduate, class of 2024)


Turning encounters into innovation


Our world is built on encounters; they are the very basis of society. People encounter people. Companies encounter companies.

We believe these connections bring innovation, which in turn leads to new ways of working and doing business.

By developing innovative products, we change how people and companies value their encounters and even change how those encounters take place.


Become business infrastructure


Transport networks, electrical grids, the internet. These are some of the roads of society.

We believe another road is possible. A new form of infrastructure for the business world.

This road connects people with people, companies with companies, and turns everyday business into innovation.

We aim to be that new road, that business infrastructure.

Products and services

Sansan – The sales DX solution

Eight – Manage your contacts and your career

Bill One – Cloud-based invoice management solution


mimi blog

About this position

We are seeking passionate and driven international engineers to join our Tokyo-based global engineering team. 

Sansan is Japan’s leading business card-based contact management solution for corporations, and one of Japan's leading SaaS products. With over 80% market share in Japan, we are expanding globally. We continue to build a multinational global team within the engineering division. The global team is principally focused on building new features for a global audience, as well as supporting the effective localization of the product as a whole.

We seek motivated and ambitious software engineers to apply and enhance their skills. They will deeply understand and improve our products and their features, integrating and scaling them for new markets, and placing user experience and needs first.

Work Responsibilities

As a software engineer, you’ll work on web application development for our products. We provide the Sansan B2B service powering digital transformation in companies, the Eight career management app for individual professionals, Bill One for cloud-based invoice management, and Contract One for cloud-based contract management. You will likely be involved with one or more of these.

Job Description

    • Participate in backlog grooming, sprint planning, and retrospectives

    • Develop, code review, test, and release features that mainly impact Sansan’s global customers

    • Design database tables and develop migration scripts 

    • Receive and integrate mentorship and feedback from experienced engineers

    • Take part in learning sessions on our products and technologies

Required Skills

  • Bachelor’s, Master’s, or doctorate in a field involving computer science, software engineering, computer engineering or technology and with an emphasis on software development

  • Demonstrable proficiency with an object-oriented language (e.g., C#, Java, C++)

  • Demonstrable knowledge of object-oriented design and development

  • Write clean, maintainable and tested code

  • Design domain models, database schemas and system architecture

  • Confidence and a forward-looking understanding of user expectations and needs

  • Proactive and motivated to learn and improve your craft

Preferred Skills

  • Experience with web development using the following or similar technologies: Java/Kotlin, Typescript, React, RDBMS (PostgreSQL)

  • Experience working with a cloud platform (preferably GCP or AWS)

  • Experience working in a team, doing code reviews, using Gitflow, and releasing your own code

Language Requirements

  • English: Native or fluent written and spoken 

  • Japanese: Minimum of conversational ability (equivalent to JLPT N4 or above level but not certification required)

Employee Empowerment (Benefits)

Sansan has a strong reputation of being a progressive company that embraces new styles of working. We offer a wide range of programs to support employees. They include the following.

  • Know Me - Company subsidizes eating/drinking out bringing together colleagues from different teams

  • Geek Seek - We pay for work-related books, hardware and software you request.

  • Ocean - Subsidized language lessons

  • H2O - Subsidized rent for employees living within 2 train stops of Omotesando or Shibuya stations in Tokyo

  • M2O - Subsidized moving allowance if new graduates move to H2O area  

  • Donicho - Weekdays can be taken off in exchange for working on weekends/holidays

  • Oyaco - Subsidies for services supporting employees with children (up to elementary 6th grade) in balancing their work with the needs of raising their children

  • Charge Leave - 3 consecutive paid days off between July and October (not deducted from paid holiday allowance)


  • Relocation

  • Acquiring a Japanese work visa

Employment Status

  • Full-time

  • Probation period: 6 months (with full pay and benefits)

Office location

  • Head Office  – Aoyama Oval Building 13F, 5-52-2 Jingumae, Shibuya-ku, Tokyo 150-0001, Japan

Remote work policy

  • Employees can work remotely in part, but must live in Japan. 

  • Employees must work at the office at least (A) three times per week or (B) one time per week. 

  • A: Eligible to receive housing allowance (H2O), to have your own desk in the office.

  • B: Not eligible to receive housing allowance (H2O),  can use hotdesk areas when you work in the office.  

  • Both A and B, employees can come to the office more than three/one day if they want.

Work Hours

  • Full flextime (core hours are 10 a.m. - 4 p.m. JST)


  • Weekends and national holidays

  • Annual paid leave

  • Year-end holiday

  • Summer holiday

  • Marriage and bereavement leave


  • Bachelor: 360,000 yen/month~ (expected annual pay approx. 5.04 million yen)

  • Master or Doctor: 380,000 yen/month~ (expected annual pay approx. 5.32 million yen) 

  • Pay raises: Annual

  • Bonus: Twice per year

Insurance and pension

  • Social health insurance

  • Social pension

  • Industrial accident compensation insurance

  • Employment insurance

With the mission “Turning encounters into innovation,” Sansan provides its namesake Sansan B2B service powering digital transformation in companies, the Eight business card app for individual professionals, Bill One for cloud-based invoice management, and Contract One for the contract database.


Sansan – The database to power your sales

Sansan is the solution for digitally transforming sales. Sansan surpasses contact management, accurately digitizing information acquired from customer contact points, including business cards, email signatures, and web form entries, enabling centralized management. Additionally, with more than 1 million items of corporate information preloaded, insights such as business type, number of employees, sales revenue, and job position can be used for sales and marketing initiatives. Integrating this data with external systems enables an even wider range of aims, like strengthening of corporate governance and risk management.

Bill One – Cloud-based invoice management for fast monthly closing

Bill One is an invoice management solution from Sansan, Inc. Through Bill One, corporate users can receive all invoices (paper or electronic), by post or email, and quickly and accurately digitize them for processing and approval. Its centralized, cloud-based management modernizes inefficient, analog practices. Bill One speeds up management’s decision-making and streamlines the monthly closing process.

Contract One – Build your contract database, maximize your business

Contract One is the contract database solution from Sansan, Inc. Using Sansan’s proprietary technology, users can digitize all company contracts with high accuracy. In the process, the company builds a comprehensive database of business transaction terms and conditions, leveraging contracts as corporate assets. Contract One's function for automatically associating related contracts gives a 360-degree view of the entire company's contract activity. Meanwhile, generative AI is applied to create an environment in which all employees, not just those in the legal department, can easily search for, check, and comprehend contract data. A contract database operating company-wide enhances risk management and helps maximize your business.

Eight – One-touch business card exchange and management

Eight is a business card app enabling new connections to be made at a touch. More than 3.3 million users worldwide have enjoyed Eight since the app launched in 2012. Eight allows users to exchange digital business cards by simply holding their smartphones near each other. These contacts can then be managed within the app. With automatic updates and notifications about your contacts’ career movements, it’s the smart way to stay on top of your professional network. With one-touch business card exchange and contact management, Eight is a seamless system that leverages your personal contact network to create business opportunities.

Sansan's policies during COVID-19 are as follows:

  • First and second interviews are being conducted remotely.
  • Employees are working remotely.
View Sansan's company page

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