PT. Bahtera is an IT service company located in North Bekasi, 15 km east of Jakarta. We specialize in developing and implementing systems such as production management systems, inventory management systems, and sales/purchasing systems, primarily for manufacturing companies in areas like Cibitung, Cikarang, Karawang, and Tangerang.
Listening to On-Site Feedback, Understanding Needs, and Supporting Operations
In recent years, Indonesia's manufacturing industry has faced increasing burdens due to the shift toward high-mix, low-volume production. Changes in order quantities and delivery deadlines from customers have made demand forecasting more challenging to avoid risks related to inventory costs and opportunity losses.
One of the tools to achieve the goal of improving operational efficiency is systemization. By implementing systems, we can enhance data entry efficiency and accuracy while enabling effective use of information through visualization, sharing, and systematization. We believe that information from the field can generate a competitive edge for companies, contributing to the revitalization of the local economy and, ultimately, the high-value transformation of Indonesia as a whole.
With the motto "Listening to on-site feedback, understanding needs, and supporting operations," we propose system implementations that deliver tangible results—improving current operations and creating new outcomes.
| Company Name | PT BAHTERA HISISTEM INDONESIA |
| Type | PMDN (Domestic Investment Company) / PKP (Taxable Entrepreneur) |
| Business Activities | Development and Implementation of Business Systems |
| Indonesia Standard Industrial Classification (KBLI) | 62029: Other Computer Consultancy and Computer Facility Management Activities |
| Business Identification Number (NIB) | 0220103321031 |
| Taxpayer Identification Number (NPWP) | 84.444.925.6-407.000 |
| Bank | Bank Mandiri, KCP Bekasi Pejuang |
| Address | Alinda Kencana Permai 1 Blok M 02 No. 4A, RT 011 RW 021, Kaliabang Tengah Village, North Bekasi Sub-District, Bekasi City, West Java Province, 17125 Indonesia |
| yama@bahtera.jp (Japanese, Indonesian, English) |
Origin of the Company Name
The name "Bahtera" is derived from the Portuguese word bateira (meaning small boat), which is also the root of "battera," a type of pressed mackerel sushi. In Indonesian, "Noah's Ark" from the Book of Genesis in the Old Testament is referred to as "Bahtera Nuh."
About Me: Keiji Yamamoto
Born in Omuta City, Fukuoka Prefecture → Graduated from Kurume University Attached High School → Graduated from Keio University, Faculty of Commerce.
I grew up in Fukuoka until high school, spent eight years in Tokyo from my student days to early career, and moved to Indonesia in October 1997 to join a systems company in Jakarta.
While on a one-year assignment at the systems department of a Japanese bank’s Jakarta branch, the Jakarta riots broke out! Escaping the mob from the Summitmas Building, I took a four-hour detour through chaotic streets to reach Kuningan, passing crowds gathered at intersections and looters carrying their spoils from supermarkets. Though I narrowly escaped with my life (and maybe even enjoyed it a little), the scenes from that day remain etched in my memory.
Later, I started an export business in Bali focused on furniture and goods via a website. After the boom faded, I returned to Jakarta, where I worked on developing and implementing business systems such as accounting and production management systems.
With over 20 years of experience in business system development and implementation in Japan and Indonesia, I established and now manage PT. BAHTERA HISISTEM INDONESIA, the current IT service company.
Purpose of This Website
Without being able to answer their questions, making proposals is out of the question.
Personally, I’ve always been forgetful and inefficient, so I struggled with the question, “How can I organize the jumbled knowledge in my head?” The answer was to turn my thoughts into a public blog. Blogs are incredibly useful tools for organizing scattered knowledge into categories, archives, and tags—placing it on a grid of vertical and horizontal axes. Initially, I started with the title “Jakarta System Implementation Memo.”
Compared to just thinking in my head, putting thoughts into writing requires an entirely different level of energy. Publishing it online adds another layer—checking for typos, avoiding embarrassing content, and exercising a kind of self-discipline.
As I continued this “mental organization blog,” the content didn’t change drastically, but the site’s purpose subtly evolved into “creating a site that covers the main topics arising in conversations with customers during system implementations.” This shift was influenced by a new question that emerged while blogging my knowledge: “What is the work that Japanese people should truly be doing in Indonesia?”
Despite the self-centered nature of this modest content, I’ve received grateful emails saying, “I learned something from your site” or “It was helpful.” This unexpected satisfaction led me to rename the site “Indonesia IT Navi” and aspire to create “a site that benefits its visitors”—a rather ambitious goal. Beyond IT, I’ll also touch on interesting topics related to the keyword “Indonesia.”
With the company’s incorporation in February 2018, the old domain “Indonesia IT Navi” (indonesia-japan.com) was redirected via a 301 redirect (permanent transfer) to the company domain “Bahtera Hisistem” (bahtera.jp).
Fortunately, this site has led to business opportunities, and for now, I’ve set the lofty goal of making it “a site helpful to people considering system implementation in Indonesia,” updating content irregularly. In today’s fast-changing world, where information quickly becomes outdated, I aim to refresh the site with the latest details whenever I notice it’s growing stale.
Humans always need continuous improvement, and I, too, want to keep evolving. Amidst that, I value the “unchanging foundational knowledge” that remains constant.
If you have any questions or feedback about this site, I’d be delighted if you could reach out via the Contact Form.
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