An adult engineer
is an otona engineer
otona check! otona check
Here, we share the philosophy behind the “Otona Engineer.”
We're confident you'll discover something that speaks to you.
check_boxWe believe work is meaningful only when our families and loved ones are healthy and living peacefully.
We manage overtime properly and encourage planned, balanced use of paid leave
We support major life events like childcare and caregiving, creating a sustainable work environment
We provide strong mental health support through meetings, one-on-ones, health consultations, supervisors, and meal subsidies.
We support major life events like childcare and caregiving, creating a sustainable work environment
We provide strong mental health support through meetings, one-on-ones, health consultations, supervisors, and meal subsidies.
check_boxWe believe engineers are craftsmen who work with integrity and pride
"Keep our promises", "Focus on quality", "Keep learning", "Comply with regulations", "Empower the team", "Contribute to society"
These six principles guide our actions.
We value long-term trust over short-term gain and act with gratitude, humility, and integrity.
These six principles guide our actions.
We value long-term trust over short-term gain and act with gratitude, humility, and integrity.
check_boxWe believe our growth comes from the growth of our team and organization
We believe education and growth are the strengths of a true organization.
Our team shares the conviction that what cannot be achieved alone can be accomplished by growing others.
Our team shares the conviction that what cannot be achieved alone can be accomplished by growing others.
otona learn！ The Otona Mindset
Otona engineers never neglect learning.
The IT industry evolves at an extraordinary pace, with constant technological innovation.
That is precisely why daily input and continuous learning are essential.
To remain an Otona engineer, one must study every day.
Without the discipline to keep improving, you cannot call yourself Otona.
That is what we believe.
boltPursue Certifications
Certifications themselves do not necessarily determine how a company or the market evaluates you. However, in order to grow, people need clear and achievable goals.
At our company, for designated certification exams, we fully cover the exam fee for the first attempt — regardless of whether you pass or fail.
Even if you do not pass, the experience of studying toward that goal will always be valuable. We believe the determination to aim for that goal continues to drive growth.
View the list of supported certifications here
At our company, for designated certification exams, we fully cover the exam fee for the first attempt — regardless of whether you pass or fail.
Even if you do not pass, the experience of studying toward that goal will always be valuable. We believe the determination to aim for that goal continues to drive growth.
View the list of supported certifications here
boltLearn from Others
For an Otona engineer, having the humility to learn from others is essential.
We provide not only on-the-job training, but also a variety of off-the-job training programs.
We are also members of several professional organizations and encourage participation in events, seminars, exhibitions, and networking gatherings.
An Otona engineer engages with people outside the company and values not only input (learning), but also output (putting knowledge into practice).
Find our regular meetup events here
We provide not only on-the-job training, but also a variety of off-the-job training programs.
We are also members of several professional organizations and encourage participation in events, seminars, exhibitions, and networking gatherings.
An Otona engineer engages with people outside the company and values not only input (learning), but also output (putting knowledge into practice).
Find our regular meetup events here
boltRead Books
When people want to gain knowledge, many turn to the web or AI. However, reading remains one of the best ways to acquire structured and reliable knowledge.
Our office bookshelves are stocked with a wide range of reference books—like a small library—and employees are free to use them at any time.
In addition, as part of our commitment to encouraging reading, we offer a program that covers the cost of purchasing books.
Our office bookshelves are stocked with a wide range of reference books—like a small library—and employees are free to use them at any time.
In addition, as part of our commitment to encouraging reading, we offer a program that covers the cost of purchasing books.
otona company！Otona Collective
The Otona Company / Stone System
You can probably find a few Otona engineers in almost any company.
However, we believe there is no other lean and elite company made up entirely of Otona engineers like Stone System.
When Otona engineers who truly understand one another form a team, they become an unstoppable force.
We continue to challenge the IT industry through the strength and appeal of Otona.
sentiment_satisfiedEmbracing Diversity
The Otona collective is made up of independent individuals.
If you take a closer look at our members, you'll find a group of truly unique personalities.
At times, those differences naturally lead to disagreements or even clashes.
But because we share the same core values and genuinely understand one another, even when we conflict, we respect each other. Over time, we deepen our bonds and steadily build a team that can enjoy work even more.
If you take a closer look at our members, you'll find a group of truly unique personalities.
At times, those differences naturally lead to disagreements or even clashes.
But because we share the same core values and genuinely understand one another, even when we conflict, we respect each other. Over time, we deepen our bonds and steadily build a team that can enjoy work even more.
sentiment_satisfiedProfessionalism
Otona engineers are true professionals.
They share knowledge, teach through internal tools, develop one another, and aim for higher levels together.
They are proactive, altruistic, and above all, kind.
Understanding the limits of working alone, they are deeply committed to growing with their teammates.
They know that the growth of those around them is what ultimately elevates them to greater heights.
They share knowledge, teach through internal tools, develop one another, and aim for higher levels together.
They are proactive, altruistic, and above all, kind.
Understanding the limits of working alone, they are deeply committed to growing with their teammates.
They know that the growth of those around them is what ultimately elevates them to greater heights.
sentiment_satisfiedAwakening
There are sayings such as, "Birds of a feather flock together," and "People are shaped by their environment."
The Otona engineers who thrive at our company were not "Otona" from the beginning.
By sharing time, experiences, and values, we have gradually cultivated what we now call the "Otona Engineer" brand.
If even a small part of our style resonates with you, it may be that the potential to become Otona is already within you.
Why not awaken that potential and take the journey toward becoming an Otona engineer with us?
The Otona engineers who thrive at our company were not "Otona" from the beginning.
By sharing time, experiences, and values, we have gradually cultivated what we now call the "Otona Engineer" brand.
If even a small part of our style resonates with you, it may be that the potential to become Otona is already within you.
Why not awaken that potential and take the journey toward becoming an Otona engineer with us?
become engineer！ Become Otona
Stone System Recruitment Information
We believe IT is a remarkable profession that transcends age, time, location, and nationality.
Whether driven by passion, experience in another field, or balancing childcare or caregiving, you are welcome here.
Our philosophy embraces diversity, and we believe your individuality will grow through new challenges.
We aim to offer IT opportunities to as many people as possible who share this vision.
| Job Description |
Software Development Business
Web application design, development, and requirements definition
Requirements definition, design, and development of smart device applications Operational system design, maintenance, and support Client specification discussions and schedule management
Software Development Business
Web service proposals and various system consulting
System Engineering Services (SES)
Product Development Business
Development and maintenance of in-house packaged software
Development and operation of proprietary services
Music Business
Music score editing and transcription
Creation and sale of music fonts Computer-based layout production |
|---|---|
| Qualifications |
No specific educational background required
[SE]
Approximately 3 years of development experience in web/open systems
（Java, PHP, C#, JavaScript, etc.） [Preferred Experience / Skills] Experience in system operations Knowledge of finance
[PL/PM]
5+ years of web/open system development experience
Experience as PL/PM [Preferred experience/skills] Experience in web/open system development |
| Who We're Looking For |
We are looking for people who:
- Love technology, are eager to learn, and are excited about new innovations
- Want to mentor and develop others, and believe everyone has their own unique strengths - Have business experience in another industry but no professional engineering experience - Resonate with our philosophy: "Creating a kinder world through IT"
We welcome individuals who share these values and aspirations.
|
| Salary |
Monthly salary starting from ¥250,000 or more
* Compensation will be determined based on age, experience, and ability.
|
| Holidays and Leave |
Two full days off per week (Saturday and Sunday)
Public holidays, summer and winter holidays, paid leave — 129 days off per year Refresh Leave New Year's Holiday Paid Leave Bereavement Leave Childcare Leave Caregiving Leave |
| Benefits and Welfare |
Salary Increase / Once a Year
Bonus System Available Social Insurance Complete Transportation Allowance Meal Subsidy Program Remote Work System Family Allowance (10,000 yen/month for spouse, 5,000 yen/month per child) Long Service Allowance (5,000 yen/month after 5 years, 10,000 yen/month after 10 years, increasing by 5,000 yen every 5 years thereafter) Position Allowance Sales Allowance Special Allowance |
Recruitment Process
-
EntryClick the entry button and apply via the application form.
If you would like a casual interview before the formal screening, please feel free to contact us. -
Document ScreeningWe review your application documents.
We would like to meet as many applicants as possible, so please feel free to apply! -
Interview (1–2 rounds)After completing an aptitude test, you will have an interview with our hiring staff.
The aptitude test does not affect the result; it is used to better understand your personality.
During the interview, we will explain the role and also discuss your future vision.
Please feel free to ask any questions. -
Offer & Final DiscussionWe will inform you of the results within one week.
We will also hold an offer meeting where the department head will explain employment conditions and expectations directly.
You will be able to join after resolving any concerns.
Your start date is negotiable.
We are looking for the "Otona" in you.
Will you join us and become an "Otona Engineer"?
Will you join us and become an "Otona Engineer"?