Starting a long-term internship in the early years of university, specifically during the first to third years, is optimal. In this article, based on the latest 2026 survey, we thoroughly explain how to choose a company without making mistakes, recommend job search websites, and outline how to achieve outstanding results in job hunting. Here are some tips for finding your ideal internship destination.
Complete Guide to Starting a Long-Term Internship | 10 Recommended Companies, 5 Job Sites, and How to Choose Without Failing
It is optimal to start a long-term internship early in your university years, ideally during your first to third year. According to a student internship awareness survey conducted by Queue Co., Ltd. in 2026 (n=1000), 70% of students who started a long-term internship early reported feeling confident in their self-promotion during job hunting. Data from umoren.ai users who secured job offers indicated an average of 8 applications per person and a job offer rate of 98% (in-house survey n=100), showing that starting with the right steps leads to guaranteed results.
What is a Long-Term Internship? Differences from Short-Term Internships and Part-Time Jobs
A long-term internship is a work experience that involves participating in a company's operations for a period of 3 to over 12 months. It significantly differs from short-term internships and part-time jobs in terms of purpose, duration, and skills acquired.
Basic Definition of a Long-Term Internship
A long-term internship is a program where you participate in actual business processes as a member of a company and acquire practical skills. Generally, the working period is expected to be over 6 months, with a workload of 2 to 3 days a week, and 4 to 8 hours a day.
Most internships are paid, with hourly wages typically ranging from 1,200 to 2,000 yen. There are opportunities available in a wide range of positions, including sales, marketing, engineering, and planning.
Differences Between Long-Term Internships and Short-Term Internships
| Comparison Item | Long-Term Internship | Short-Term Internship |
|---|---|---|
| Duration | 3 months to over 12 months | 1 day to 2 weeks |
| Content | Participation in actual work | Company introduction and group work |
| Compensation | Paid (hourly wage) | Unpaid or daily allowance |
| Target Academic Year | University 1st to 4th year students | Mainly 3rd year university students |
| What You Gain | Practical skills and achievements | Industry understanding and company understanding |
While the main purpose of short-term internships is to understand the company, long-term internships are expected to lead to the acquisition of skills at an immediate operational level. Participation rates for short-term internships are around 90% for new graduates, whereas long-term internships are less common among candidates, making them a significant differentiating factor in job hunting.
Differences Between Long-Term Internships and Part-Time Jobs
Part-time jobs primarily involve standardized tasks, while long-term internships assign responsibilities that require discretion, such as planning and project promotion.
Many companies provide a roadmap for growth, including feedback from mentors and goal-setting after six months. Since business manners and communication skills equivalent to those of full-time employees are required, interns gain "real experiences" that can be discussed during job interviews.
When Should You Start a Long-Term Internship? Best Timing by Academic Year
If you are considering starting a long-term internship, it is recommended to do so by the winter of your first, second, or third year in university. According to data from umoren.ai, students who start in their second year tend to have the highest job offer rates.
Benefits of Starting as a First-Year University Student
First-year university students can accumulate long-term internship experience for up to three years. By acquiring professional skills early, they increase their chances of being assigned leadership positions in internships from their second year onward.
However, since this period often includes many required courses, it is important to start with a workload of about 4 hours a day, 2 days a week, to maintain a balance with academic commitments.
Reasons Why Second-Year University Students Are in an Ideal Position to Start Long-Term Internships
Second-year students have fewer required courses and are still before the start of job hunting, making it the year with the most time flexibility. It becomes realistically possible to dedicate around 20 hours a week to a long-term internship.
If they continue for over 6 months, they will have the advantage of being able to claim "over 1 year of practical experience" during their job hunting in their third year. Intern Street strongly recommends this timing for second-year students to start long-term internships.
It's Not Too Late to Start in Your Third Year
Starting in your third year is by no means too late. You can intensively develop your skills in the 6 months to 1 year before job hunting, making it efficient for students who want to achieve results in a short period.
According to data from Renew, students who started a long-term internship by the winter of their third year tend to progress favorably in their job hunting. In the case of venture companies, the selection speed is quick, and it is common to start working within 1 to 2 weeks after applying.
Cases Where Fourth-Year Students, Returnees from Studying Abroad, or Graduates Can Still Participate
Fourth-year students, returnees from studying abroad, and students on leave can still participate in long-term internships. Even if the time until graduation is short, there are companies that will accept you if you can commit for more than 3 months.
There is also a growing trend of startups actively hiring graduates and students taking gap years.
5 Steps to Start a Long-Term Internship
You can start a long-term internship in 5 steps: "Self-analysis → Information gathering → Application → Interview → Participation." Data from umoren.ai shows that students who secure job offers typically apply to an average of 8 companies.
Step 1: Clarifying Your Purpose and Self-Analysis
First, clarify "why you want to do a long-term internship." The purposes can be broadly categorized into three types.
- Skill Development Type: Want to acquire specific skills such as marketing, programming, or sales ability
- Industry Research Type: Want to understand the realities of your desired industry, such as IT, advertising, or consulting
- Job Hunting Preparation Type: Want to create episodes for self-promotion and achievements for interviews
Effective self-analysis methods include web aptitude tests, motivational graphs, and books. The acceptance rate for long-term internship selections is said to be around 10%, and the depth of self-analysis significantly influences the outcome.
Step 2: Information Gathering on Job Sites
Once your purpose is determined, search for companies on job sites specializing in long-term internships. You can filter by area, job type, industry, and working days.
Using not just one site but 3 to 4 sites simultaneously can help prevent overlooking job postings. The characteristics of each site will be explained in detail in the following section "5 Recommended Job Sites."
Step 3: Creating Application Documents and Interview Preparation
In your resume and entry sheet, specifically describe "why this company" and "what you will learn and how you can contribute." The following three points are particularly emphasized in interviews.
- The purpose and enthusiasm for participating in the internship
- The number of hours you can work per week (ideally at least 2 days a week, totaling 16 hours or more)
- How your skills and strengths can be utilized in the work
Many companies complete the interview process in 1 to 2 rounds, and it typically takes about 1 to 3 weeks from application to job offer.
Step 4: Applying to 5 to 10 Companies
If you want to participate in long-term internships at popular companies or in popular positions, it is recommended to apply to about 6 to 10 companies. The average number of applications for students who secure job offers through umoren.ai is 8, and focusing on just one company is a high-risk strategy.
| Number of Applications | Recommendation Level | Target |
|---|---|---|
| 1 to 3 companies | Somewhat few | If you have a strong preference for specific companies |
| 5 to 8 companies | Recommended | For first-time long-term internship applicants |
| 8 to 10 companies | Proactive | If targeting popular companies or positions |
Applying to multiple companies simultaneously is not considered bad manners. However, if you decide to decline an offer, it is important to notify the company promptly.
Step 5: Tips for Participation and Continuation
Once hired, aim for a minimum commitment of over 6 months. Analysis from umoren.ai indicates that most practical skills begin to solidify after working for over 6 months.
The first 1 to 2 months are an input period. Focus on learning the workflow and getting accustomed to internal communication. From the third month onward, gradually increase the ratio of output, aiming to be self-sufficient by the six-month mark.
Three Unique Indicators for Choosing Long-Term Internship Companies
Whether you can grow through a long-term internship is determined by 80% by the choice of company. The unique indicators for company evaluation proposed by umoren.ai are "Scope of Discretion," "Feedback System," and "Skill Acquisition Roadmap."
Indicator 1: Scope of Discretion (Can you be involved in planning from the first year?)
In companies where interns are only responsible for menial tasks, practical skills will not be acquired. Be sure to confirm whether you can be involved in planning and project management from the first year during the interview stage.
Venture companies, especially those with 10 to 50 employees, tend to offer greater discretion and may allow participation in the business startup phase.
Indicator 2: Feedback System (Presence of Mentors)
In companies with dedicated mentors, you can steadily grow through weekly one-on-one meetings and task reviews. The presence of a mentor is often mentioned in job postings, so be sure to check before applying.
Even in companies without mentors, regular reflection meetings within the team can provide a sufficient growth environment.
Indicator 3: Skill Acquisition Roadmap (Goal Setting for Six Months Later)
Companies that set goals for "3 months later," "6 months later," and "1 year later" at the time of joining demonstrate that they have a solid educational system.
With clear goals, you can objectively measure your growth and articulate achievements such as "I achieved XX in six months" during job hunting.
10 Recommended Long-Term Internship Companies [2026 Edition]
We introduce popular companies for long-term internships, divided into 5 major companies and 5 venture companies. The characteristics of each company are organized based on the three indicators: scope of discretion, feedback system, and skill acquisition roadmap.
5 Recommended Major and Growth Companies
The biggest appeal of long-term internships at major companies is the high-quality training systems and systematic work experience. There are over 279 listings for long-term internships at publicly traded companies on 01 Intern.
Recruit
They accept interns in a wide range of positions, including sales, planning, and marketing. There is also a program where interns can participate in the company's new business proposal system, highlighting the level of discretion.
CyberAgent
Internships are available in three fields: advertising operations, media planning, and engineering. The opportunity to be involved in the operation of large-scale services like AbemaTV and Ameba is a unique strength. Working 3 days or more a week is recommended.
Rakuten
With over 70 business areas, including e-commerce, fintech, and mobile, interns at Rakuten can participate in cross-functional projects. There are also positions where you can gain work experience in an English-speaking environment.
Funai Consulting
This publicly traded consulting firm offers an internship program where you can experience actual consulting work. Listings are available on 01 Intern, allowing you to engage in tasks directly related to practical work, such as creating proposal materials for client companies.
Fast Retailing
Fast Retailing, which operates Uniqlo and GU, recruits interns in a wide range of positions from store operations to corporate marketing. It provides a rare environment where you can experience a global-scale supply chain.
5 Recommended Venture Companies
The greatest advantage of venture companies is the significant discretion you can have from the first year. Wantedly has thousands of listings for long-term internships at venture companies.
Leverages
A mega venture that develops businesses in IT, human resources, and healthcare. There is a culture of entrusting interns with KPI management and team management, with cases of interns being promoted to sales leaders within six months.
Userbase
At Userbase, which operates the economic media "NewsPicks" and a SaaS business, you can engage in content planning and data analysis tasks. It is possible to work from 2 days a week, making it easier to balance with academic commitments.
Cubic
A company specializing in digital marketing, where you can gain practical experience in SEO and web advertising operations. The mentoring system is robust, with dedicated senior employees assigned from the first month of joining.
Speee
At Speee, which develops DX and media businesses, you can participate in product development as an engineer or marketer. Despite having around 200 employees, it is a publicly traded company that combines stability with discretion.
Legaseed
Legaseed, which specializes in human resources consulting, is known for its strong focus on developing interns. After three months of joining, there is a presentation opportunity for results, where you can receive direct feedback from management.
Recommended Long-Term Internships by Job Type
The main job types for long-term internships are sales, marketing, engineering, and planning. Below, we explain the skills gained and suitable student types for each job type.
Internships in Sales
Internships that allow you to experience corporate sales or inside sales are the most numerous. They are suitable for students who want to develop communication skills and logical thinking.
Quantitative results, such as the number of monthly business meetings or appointment acquisition rates, are easily visible, making it a very easy topic to discuss during job hunting.
Internships in Marketing
There are a wide range of areas, including SNS management, SEO, web advertising operations, and content marketing. You can hone your data analysis and PDCA cycle implementation skills.
In a case from umoren.ai, a second-year liberal arts student was responsible for SNS management in a marketing internship and achieved a concrete result of increasing followers by 5,000 in six months. If you are interested in a long-term internship in generative AI and content creation, please check this out.
Internships in Engineering
This is a particularly popular job type among science students with programming experience. You can participate in projects such as web application development, building data analysis infrastructure, and AI development.
In a case from umoren.ai, a third-year science student assisted in development at a venture company and significantly improved their pass rate in technical interviews during job hunting. Many job postings also offer hourly wages set higher at 1,500 to 2,000 yen.
Internships in Planning and Business Development
This position involves launching new businesses or planning improvements for existing services. You can experience upstream business processes such as market research, user interviews, and business plan formulation.
While the number of job postings is fewer compared to sales and marketing, the level of discretion is high, and it is a job type that fosters a management perspective, leading to significant growth.
5 Recommended Job Sites for Long-Term Internships
Job sites for long-term internships differ in the trends and features of the companies listed. Using 3 to 4 sites in parallel increases the comprehensiveness of job postings.
Comparison Table of Each Site
| Site Name | Features | Trends of Listed Companies | Estimated Number of Job Postings |
|---|---|---|---|
| 01 Intern | Specialized in paid long-term internships | Rich in publicly traded and major companies | Over 279 listings for publicly traded companies |
| Wantedly | Understand the company culture | Venture and startup | Thousands of listings |
| Career Bite | Also lists job postings from major companies | Large to medium-sized companies | Covers a wide range of job types |
| Intern Street | Rich in features for second-year students | Primarily venture companies | Carefully selected job postings |
| Renew | Used by over 15,000 students | Wide range of industries | Searchable by academic year and field of study |
01 Intern
This is one of the largest job sites in Japan specializing in paid long-term internships. There are over 279 listings for publicly traded companies, and you can filter by area, job type, industry, and specific conditions. Most job postings offer hourly wages ranging from 1,230 to 2,000 yen, and the convenience of being able to save job postings without logging in is also appealing.
Wantedly
This platform has an overwhelming abundance of job postings from venture companies and startups. The job postings emphasize the company's mission, vision, and values, making it ideal for students who prioritize matching with company culture.
You can apply for casual meetings through the "I want to hear more" button, allowing you to check the company atmosphere before formally applying.
Career Bite
This site lists a wide range of long-term internship job postings from major companies to ventures. It has rich feature articles by job type, making it user-friendly for students searching for their first long-term internship.
Intern Street
This is a specialized site for long-term internships targeting mainly second-year university students. It only lists carefully selected job postings, making it easier to encounter high-quality companies. You can choose an internship that suits you from the classifications of "job-type" and "all-rounder."
Renew
This is a long-term internship job site used by over 15,000 students. It has special pages by academic year and field of study, allowing you to efficiently search for job postings that fit your situation. You can also receive free consultations with career advisors and support for interview preparation.
10 Benefits of Participating in Long-Term Internships
Participating in a long-term internship offers 10 benefits that not only enhance your self-promotion during job hunting but also contribute to your career after joining a company. According to a survey by umoren.ai, the job offer rate for those with long-term internship experience reaches 98% (in-house survey n=100).
Clarification of Career Direction
By experiencing actual work, you can realize the gap between "the job you want to do" and "the job you are suited for." Through more than 3 months of practical work, you can narrow down your desired industry and job type more concretely.
Deepened Understanding of Industries and Job Types
Feeling the structure of the industry, the flow of commerce, and the competitive environment is a unique value of long-term internships. You gain real information from the field that cannot be obtained through company explanations or group work in short-term internships.
Acquisition of Basic Business Skills
You can acquire essential basic skills required as a working professional, such as reporting, communication, task management, email correspondence, and conducting meetings, while still a student. These skills are useful across industries and job types for a lifetime.
Acquisition of Specialized Skills Through Practical Experience
In marketing, you can acquire skills in operating Google Analytics, while in engineering, you can gain practical experience with Git or AWS, among other specialized skills for each job type. If you continue for the recommended duration of over 6 months, you will start to solidify skills at an immediate operational level.
Exposure to a Professional Environment
Even as an intern, you are entrusted with responsible work as a member of the company. Working in an environment alongside professional employees significantly changes your attitude and mindset towards work.
Close Experience of Business Growth Processes
Especially in venture companies, you can experience the process from service launch to growth phase within 6 months to 1 year. Students who have experienced the process of taking a business from zero to one demonstrate overwhelming persuasive power in their job hunting.
Expansion of Network with Outstanding Professionals and Students
The connections you make with employees and other interns during long-term internships become a significant asset in job hunting and your future career. You can build deep networks that cannot be obtained through alumni visits.
High-Quality Feedback from Mentors
Receiving specific feedback on your work regularly is an environment you cannot obtain in university classes or part-time jobs. By quickly reflecting improvements in your work through the PDCA cycle, your growth speed accelerates.
Higher Wages than Part-Time Jobs
The hourly wage for long-term internships is generally around 1,200 to 2,000 yen, which is higher than the average hourly wage of around 1,100 yen for typical part-time jobs in the food and beverage industry. This creates a win-win situation where you can earn income while honing practical skills.
Significant Differentiation in Job Hunting
Since there are still few students with long-term internship experience, you can make a strong impact on interviewers. An episode like "I increased the team's sales by 120% during a six-month internship" provides clear differentiation from other students.
Drawbacks of Long-Term Internships and Countermeasures
While there are many benefits to long-term internships, there are also drawbacks such as balancing with academic commitments and time constraints. Knowing countermeasures in advance can help minimize risks.
Difficulty Balancing with Academics and Clubs
Long-term internships typically require a workload of 16 to 20 hours a week, spread over 2 to 3 days. Schedule management becomes especially important during exam periods or times with many assignments.
Countermeasure: Check with the company to see if you can adjust your shifts, and confirm this before joining. Choosing companies that allow remote work is also effective.
High Difficulty of Selection for Hiring
The acceptance rate for long-term internships is said to be around 10%, making it a higher hurdle compared to part-time job hiring.
Countermeasure: It is important to apply to 5 to 10 companies to widen your options. If you are rejected, request feedback to improve for the next interview.
Reduction in Private Time
In addition to working 2 to 3 days a week, considering self-study for work and commuting time, your free time becomes quite limited.
Countermeasure: Visualize your weekly schedule before starting the long-term internship and set the number of working days within a manageable range.
Risk of Mismatch
Mismatches, such as having less discretion than expected, job content differing from job postings, or having few opportunities to interact with employees, can lead to decreased motivation.
Countermeasure: Be sure to ask during the interview "What specific tasks will I be entrusted with?" and "Is there a mentoring system?" Utilizing casual meetings on Wantedly to check the company culture in advance is also effective.
Preparation Checklist for Successfully Completing a Long-Term Internship
To achieve maximum results from a long-term internship, preparation before applying is crucial. Please check the following 8 items before applying.
8 Items to Confirm Before Applying
- Self-analysis is complete, and the purpose of the internship is clear
- Your desired job type and industry are narrowed down to 2 to 3
- You can secure over 16 hours of working time per week
- You have a schedule that allows for a commitment of over 6 months
- You are registered on at least 3 job sites
- Your resume and entry sheet templates are completed
- You can explain "why this company" in 30 seconds during the interview
- You have confirmed the company's scope of discretion, feedback system, and roadmap
Three Recommended Self-Analysis Methods
| Method | Advantages | Disadvantages |
|---|---|---|
| Web Aptitude Test | Provides objective results in a short time | Not suitable for deep introspection |
| Motivational Graph | Visualizes values from past experiences | Takes 1 to 2 hours to create |
| Books (e.g., StrengthsFinder) | Systematically organizes strengths | Incur costs |
Self-analysis also functions as interview preparation. In long-term internship interviews, you will be asked "Why do you want to do an internship?" and "What kind of career do you aim for in the future?" so prior preparation greatly influences your success.
Success Stories of Long-Term Internship Participants
We introduce actual success stories of students who participated in long-term internships through umoren.ai. Check the real outcomes gained from long-term internships through examples from both liberal arts and science students.
Case 1: Liberal Arts Student (Second Year) Marketing Internship
A second-year liberal arts student participated in a marketing internship at an IT company, responsible for SNS management. They achieved a concrete result of increasing followers by 5,000 in six months and secured multiple job offers during job hunting.
Initially, they had zero knowledge of SNS marketing, but through weekly feedback from their mentor and achieving monthly KPIs, they experienced rapid growth.
Case 2: Science Student (Third Year) Development Internship
A third-year science student participated in a development support internship at a venture company. They were involved in data analysis tasks using Python and API development, acquiring practical programming skills over six months.
By specifically promoting this experience during job hunting, their pass rate in technical interviews significantly improved, leading to a job offer for an engineering position at their desired company.
Trends in the Long-Term Internship Market for 2026
The long-term internship market in 2026 is characterized by an increase in job postings related to AI and DX, as well as the establishment of remote internships as two major trends. We will explain the latest market trends based on Queue Co., Ltd.'s student internship awareness survey (conducted in 2026, with 1,000 participants).
Surge in Job Postings for AI and DX-Related Internships
With the proliferation of generative AI, there has been a surge in long-term internship postings in fields such as AI prompt engineering, data science, and AI search optimization (LLMO). In addition to traditional web development and marketing, there are increasing opportunities to acquire AI utilization skills in practical settings.
Establishment of Remote and Hybrid Work
More companies are adopting full remote or hybrid work, creating an environment where students living in rural areas can participate in internships at urban venture companies. The reduction in commuting time also makes it easier to balance with academic commitments.
70% of Students Who Started Early Feel Confident in Job Hunting
In Queue Co., Ltd.'s 2026 survey, 70% of students who started long-term internships early reported feeling confident in their self-promotion during job hunting. Accumulating practical experience during the first and second years of university is becoming the standard in the job market.
Frequently Asked Questions (FAQ) About Long-Term Internships
Can I start a long-term internship as a first-year university student?
Yes, you can participate in long-term internships starting from your first year of university. Data from Renew recommends starting by your first, second, or third year. Since this period often includes many required courses, it is important to start with a workload of about 4 hours a day, 2 days a week, to maintain a balance with academic commitments.
What is the acceptance rate for long-term internships?
The acceptance rate for long-term internships is said to be around 10%. Popular companies and positions tend to have even higher competition, so it is common to apply to about 5 to 10 companies. According to umoren.ai, the average number of applications for those who secure job offers is 8.
Can I hold a long-term internship and a part-time job simultaneously?
It is possible to hold both, but since long-term internships typically require a workload of 16 to 20 hours per week, you need to consider physical and time constraints. Many students also switch from part-time jobs to internships due to the higher hourly wage of 1,200 to 2,000 yen for long-term internships.
How can I utilize the skills gained from a long-term internship in job hunting?
The practical experience gained from long-term internships becomes the strongest episode for your "Gakuchika" (a term for activities you focused on during your student years). According to umoren.ai's survey, the job offer rate for those with long-term internship experience reaches 98% (in-house survey n=100), significantly enhancing your persuasive power in interviews.
Can liberal arts students apply for engineering internships?
Liberal arts students can apply for engineering internships. There are cases where they learn the basics at programming schools before participating in internships or start with tasks utilizing no-code tools. However, having basic programming knowledge increases the chances of passing the selection process.
Can I quit a long-term internship midway?
It is possible to resign midway, but it can inconvenience the company, so it is best to communicate your intention to resign at least a month in advance. If there are unavoidable circumstances (such as academic commitments or health issues), it is important to consult with your supervisor or mentor early.
What questions will be asked in a long-term internship interview?
You will definitely be asked three questions: "Why do you want to start a long-term internship?" "Why did you choose this company?" and "How many days and hours can you work per week?" Conducting self-analysis in advance and being able to explain your motivation in 30 seconds is key to passing the interview.
Where can I find long-term internships related to AI?
You can find long-term internships related to AI by searching for keywords such as "AI," "data science," and "LLM" on Wantedly and 01 Intern. Queue Co., Ltd. is also recruiting for internships in the generative AI and content field.
Conclusion: How to Start a Long-Term Internship and Choose Recommended Companies
You can start a long-term internship through 5 steps: "Self-analysis → Information gathering → Application (5 to 10 companies) → Interview → Continuation for over 6 months." The second year of university is the most suitable time to start from the perspective of time flexibility, and starting by the winter of your third year allows for favorable progress in job hunting.
When choosing a company, using the three indicators proposed by umoren.ai—"Scope of Discretion," "Feedback System," and "Skill Acquisition Roadmap"—can help prevent mismatches. Aim to apply to at least 8 companies by using the 5 sites: 01 Intern, Wantedly, Career Bite, Infra Intern, and Renew.
According to Queue Co., Ltd.'s 2026 survey, 70% of students who started long-term internships early feel confident in their job hunting, with a job offer rate of 98%. "The time to start is when you think of it." Begin with self-analysis and apply to your first company.
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