Imagine you are the “Ace” of your team—fixing supplier bugs in half the time… Now imagine your salary is less than half of the “20-year veteran” next to you.
Based on my experience as an OBD engineer at a major Japanese automaker, I’ll expose the logic of the Nenko Joretsu (Seniority System) and provide the roadmap to break through this “Glass Ceiling.
The Glass Ceiling: Understanding the Seniority System and Seniority Based Pay
To work for a large Japanese corporation, you must first understand the rules of their game: the seniority system (Nenko Joretsu) and its linked seniority based pay. This is not just an outdated relic; it is a sophisticated ecosystem designed to maintain company stability.
Why Your Performance Often Loses to “Years of Service” in a JTC
Under a seniority system, an employee’s rank and salary are strongly proportional to their “years of service” and “age.”
Let’s look closer at the “Young Ace” I mentioned earlier. Back when I was an OBD engineer at a leading automotive manufacturer, we had a young ace on our team. He was incredible—he could test massive programs delivered by suppliers faster than anyone and write pinpoint-accurate bug reports. He possessed an overwhelming processing capacity, instantly identifying the root causes of defects on actual vehicles or simulators and providing logical feedback that suppliers couldn’t refute. Thanks to him, the development schedule barely stayed on track. He was truly the “breakwater” and “accelerator” of the project.
However, despite protecting quality on the front lines and keeping the project moving, his salary was less than half that of a “20-year veteran employee (the so-called ‘middle-aged slacker’)” who spent his days doing nothing but formatting Excel specifications. In a JTC evaluation system, no matter how much “execution capability” you demonstrate, the absolute yardstick of “years of service” takes priority. The structural absurdity where the youth supporting the system are valued less than elders who just sit there is the true source of Japan’s technical debt.
The Hidden Logic of Pay Rises: Waiting for Your Turn in the Hierarchy
The logic behind seniority based pay is based on lifetime employment: “Even if your salary is low now, you will move up the escalator into management positions once those above you retire.” This seniority based pay model assumes that employees will stay at the same company for decades, gradually increasing their salary as they age.
However, for foreign engineers who grew up in a global competitive environment and measure their market value by “current technical skills,” accepting a low salary while waiting for “your turn in 10 years” is nothing but a “Glass Ceiling” that halts your career.
Decoding the Japan IT Industry Structure: Why Promotions are Stagnant
In addition to the seniority system, the “pyramid structure” unique to Japanese software development (japan it industry structure) makes promotion even more difficult for engineers.
The Tiered SIer Model: How Organizational Layers Kill Individual Growth
Many large Japanese companies do not employ software engineers in-house; instead, they outsource system development to large “SIers” (System Integrators). These large SIers then subcontract the work to mid-sized SIers (secondary contractors), who further outsource to small firms (tertiary and quaternary contractors). This is the multi-layered subcontracting structure.
The terrifying part of this japan it industry structure is that the higher you go, the less code you write. Your job becomes “Excel-based progress management.” In other words, even if you are a highly skilled foreign hacker who wants to master technical skills, you will hit a salary ceiling in this pyramid unless you become a “manager.”
What is SES in Japan? Understanding the Impact of Outsourcing on Your Career
Supporting the bottom of this multi-layered subcontracting structure is a contract type called “SES” (System Engineering Service). If you are wondering what is ses in japan when looking at Japanese IT job postings, the answer is essentially “labor dispatch” (on-site client work). In simple terms, what is SES in Japan? It means engineers are assigned to client companies and work under the client’s direction rather than developing their own company’s product. In an SES company, you don’t work on your own company’s products. Instead, you are stationed at another company’s office (a large SIer or end-user company) and write code under their direction.
Impact on Career: Since SES is a “man-month” business based on how much you can be billed for monthly, your salary will never increase beyond the cap your SES company charges the client—no matter how talented you are. SES can be a good entry point into the Japanese market, but it is not a place to stay for long.
Breaking the Nenko Joretsu Cycle: How Foreign Devs Can Bypass the Ceiling
So, within the japan it industry structure, how can you obtain fair evaluation and compensation?
Identifying “Performance-Based” Companies Within the Japan IT Industry Structure
Not all Japanese companies follow the seniority system. Companies with the following characteristics are shifting toward “meritocracy,” valuing ability over age:
- Mega-Ventures / Startups: Companies like Mercari, LINE, and Rakuten have adopted merit-based evaluation systems (job-based employment) similar to foreign-affiliated firms.
- In-house Product Companies: Companies that develop their own web services or SaaS—rather than acting as SIers or SES—tend to offer higher salary levels because they directly link an engineer’s technical skills to business value.
Leveraging Your Global Perspective to Overcome Seniority-Focused Management
If you choose to remain in a JTC, it is effective to position yourself as a “Global Bridge” professional. By taking the lead in managing offshore development or deploying the latest English-language technical documentation within the company, you can aim for early promotion as a “special case” outside the traditional seniority system framework.
Why the Seniority System Still Exists in Japan
Many foreign engineers ask why the seniority system still exists in modern Japan. The reason is that this system was originally designed to support lifetime employment and maintain stability within large corporations.
While this model worked well during Japan’s high-growth era, it often conflicts with today’s global tech industry where engineers are evaluated based on performance rather than age.
Conclusion: Don’t Wait for the Seniority System to Change—Take Action
The seniority system (Nenko Joretsu) and the subcontracting structure in JTCs are massive systems optimized over decades. They will not change through the efforts of a single foreign engineer. When you realize your performance is not being fairly evaluated, waiting for the system to change is a waste of time.
Action Step: Evaluate Your Market Value Beyond Your Current JTC Rank
Your true market value is not written in a JTC’s internal grade table. First, look at the world outside. One option is to register with a recruitment agency that specializes in foreign-affiliated firms or modern Japanese tech companies that value meritocracy. Be sure to check our guide on “5 Best Recruitment Agencies for Software Engineers in Japan” to learn how to use them wisely.
Next Steps: Level Up Your Navigation
This article is a sub-module of Layer 3. To master the complete career optimization protocol or explore the entire blueprint, choose your next destination:
🔼 Back to Layer 3: Career Strategy & Hacking Seniority (Return to the module overview: Salary Negotiation, Visa Hacks, and Promotion Logic)
🏠 Return to The Engineer’s Blueprint: Decoding Japanese Workplace Culture (Access the Master Manual including Genba Communication, Tech Specs, and Business Etiquette)
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