Systems Engineering Consultants Co.,LTD.
3741・Prime Market・Information & Communication
Systems Engineering Consultants Co.,LTD.
3741・Prime Market・Information & Communication
Business
SEC Co., Ltd. is a real-time technology specialist company founded in 1970. Centered on its core technology of "developing computer systems that closely interact with a constantly changing external environment," the company conducts software development across four business fields: Social Infrastructure Systems BF, Space Advanced Systems BF, Mobile Network BF, and Internet BF. Its major clients span a wide range, including government agencies, national research institutions, mobile network operators, electronics manufacturers, automobile manufacturers, and heavy industry manufacturers. The company provides highly reliable systems that support the safety and development of society, ranging from expressway traffic control and satellite-mounted software to medical AI and quantum computing. It is listed on the Prime Market of the Tokyo Stock Exchange.
Business Model
The majority of net sales consists of contracted software development for government agencies and private companies. Building on QCD (Quality, Cost, Delivery) capabilities, the company differentiates itself through high-value-added proposals centered on New Elements (innovative technologies, solution products, patents, etc.), achieving quantitative expansion through repeat orders and horizontal deployment. In addition, the company has a compound revenue structure that earns subsidy income (¥109 million in FY2026 (ending March 2026)) from joint research with national research institutions such as JAXA, NEDO, and AMED.
Company Strengths
Since its founding in 1970, the company has accumulated over 50 years of development experience in social infrastructure and space fields, including expressway traffic control systems, rocket testing, and onboard satellite software. Its real-time technology, centered on interrupt processing, priority processing, and concurrent processing, represents a specialized domain that competitors find difficult to replicate in the short term, and multiple certifications such as ISO 9001, ISMS, and ISO 22301 underpin its quality and reliability.
The order backlog at the end of FY2026 (ending March 2026) reached ¥9,065 million (144.8% year-on-year), of which Social Infrastructure Systems BF alone accounted for ¥7,247 million (149.9% year-on-year). This represents approximately 77% of the ¥11,800 million net sales plan for the following fiscal year already secured through orders, giving the company extremely high earnings predictability. Continued receipt of large-scale orders from government agencies underpins this structure.
As of the end of FY2026 (ending March 2026), the equity ratio stood at 82.9% (improved from 79.2% in the previous fiscal year), with net assets of ¥10,313 million and cash and cash equivalents of ¥3,321 million. Interest-bearing debt consists only of a portion of short-term borrowings for bonus funds, maintaining an essentially debt-free management structure. Operating cash flow was ample at ¥1,697 million, giving the company the financial strength to fund continued investment in human resources, R&D, and working environments from its own funds.
ENVALITH's Perspective
Performance Trend
In FY2026 (ending March 2026), the company achieved net sales of ¥11,220 million (up 9.0% year on year), operating income of ¥1,879 million (up 4.8% year on year), and net income of ¥1,509 million (up 12.3% year on year), marking six consecutive fiscal years of revenue and profit growth. Net sales growth decelerated from 20.6% in the previous fiscal year to 9.0%, but Internet BF (+33.5%) and Social Infrastructure Systems BF (+11.3%) served as growth drivers. As for the external environment, domestic IT demand, as also reflected in Ministry of Internal Affairs and Communications statistics, has shown a monthly year-on-year increasing trend in sales, providing tailwinds from the push for DX and increased development work for government agencies. The operating margin declined slightly to 16.8% (from 17.4% in the previous fiscal year), but this reflects the absorption of active investment in R&D expenses and personnel costs, and the company's structural earnings power remains intact. For the next fiscal year (FY2027, ending March 2027), the company forecasts net sales of ¥11,800 million (+5.2%), operating income of ¥1,980 million (+5.3%), and net income of ¥1,575 million (+4.3%).
Growth Strategy
Pursuit of sustained business growth through deepening advanced technology and open innovation
Development for government agencies, particularly in the medical, environmental, and judicial fields, increased substantially. Orders received in FY2026 (ending March 2026) grew sharply to ¥7,950 million (up 145.0% year on year), with the order backlog expanding to ¥7,247 million (up 149.9% year on year). Continued strength is expected in the next fiscal year as well, and this business is positioned as a core pillar of company-wide growth.
In addition to steady progress in autonomous vehicle driving R&D projects, an increase in space astronomy-related development pushed FY2026 (ending March 2026) sales to ¥3,159 million (up 3.1% year on year). Further growth is expected in the next fiscal year, driven additionally by increased development for national research institutions. Subsidy income from commissioned research by national research institutions (¥109 million in FY2026, ending March 2026) also supports ordinary profit.
To "master advanced technologies," the company continues to implement substantial base pay increases in addition to regular pay raises, expanded advanced technical education, and R&D investment (¥217 million in FY2026, ending March 2026, up 44% year on year). It is promoting joint research with universities, national institutions, and corporate research organizations to sustainably strengthen technological superiority. The company aims to expand operating profit while absorbing increased investment through productivity gains.
Driven by increased contactless IC-related development and expanded DX-related development for private companies, Internet BF sales in FY2026 (ending March 2026) grew sharply to ¥1,784 million (up 33.5% year on year). A temporary decline is expected in the next fiscal year due to optimization of personnel allocation across business fields, but the company intends to capture the medium- to long-term expansion of DX demand.
Last updated: July 19, 2026

