I'm considering changing jobs in my 20s, but there are so many job sites that I honestly don't know which ones to register for. I've heard of doda, Mynavi, Rikunabi, and others, but I really have no idea which one suits me best.

Recently, I did some research and found that there are quite a few differences even among job sites aimed at people in their 20s. Things like the number of job listings, ease of search, whether they have an app, support features, and other small details are important when choosing. It also seems that the best site depends on your salary range.

doda has over 260,000 job listings and a solid selection of jobs for people in their 20s. There are more than 30,000 listings offering an annual income of 300,000 to 500,000 yen, which is above the median. It also has a dedicated app where you can save search criteria, making it easier to search efficiently even when busy. It offers features like automatic resume input and email management to support your job search.

AMBI seems to specialize in high-class job changes. It's aimed at those targeting an annual income of over 500,000 yen. It has over 200,000 public job listings, with more than 50,000 offering 300,000 to 500,000 yen. Many listings are from well-known companies, so it might be good if you're aiming for a prestigious employer. However, it seems to have fewer office clerical jobs.

Mynavi Tenshoku's strength is in its detailed search options. Besides basic criteria, you can choose from 15 detailed conditions, making it easier to find workplaces that fit your lifestyle, like remote work or side jobs. The total number of listings is about 47,000, which is fewer than others, but it's suitable for those who want to narrow down their options.

En Tenshoku has about 90,000 listings and is strong in urban areas. It offers many jobs welcoming inexperienced applicants and remote work, so there are plenty of options. You can search via app, save conditions, and even manage your schedule with a calendar feature. It's a good candidate to use alongside other sites.

Green specializes in the IT industry. Although it has only about 26,000 public listings, the focus is on engineers and startup companies. If you're aiming for an IT career change, it's worth having in your lineup.

Rikunabi NEXT has over 1.31 million listings, which is overwhelming. The sheer volume might make it harder to find the right job. It offers 17 detailed search criteria, so the filtering functions are quite comprehensive.

Hataraku is focused on regional U/I-turns. It's not ideal for urban job changes, but if you want to return to your hometown and find a new job, it's a good site.

Type Tenshoku is geared toward engineers, with about 2,600 public listings—relatively few. However, it offers plenty of engineer-specific content and events, so if you're targeting an engineering career and want to combine it with sites that have more listings, it could be worth considering.

E-Career is known for its simple usability. With about 25,000 listings, it's on the smaller side, so it might not be suitable if you want to increase your options. But it has a calendar feature that makes managing interview schedules easier.

Ultimately, when choosing job sites in your 20s, the best approach seems to be selecting ones with a large number of listings, easy search functions, and comprehensive support features. Depending on your career goals—like aiming for a high-class position with AMBI, focusing on IT with Green, or regional jobs with Hataraku—using multiple sites together is probably the smartest move. Making good use of different job sites during your 20s to find the right workplace is key.