Rakuten Kobo tech stack

Rakuten Kobo builds mostly with C#, JavaScript, Ruby, SQL. Its stack also includes MS SQL, React.js, RabbitMQ, Tableau. C# is named in 3 of the 8 job postings Rakuten Kobo published in the last 12 months (38%). Counted by Alion from the job postings of Rakuten Kobo, updated Oct 12, 2026.

Source: Alion Coverage: the company's job postings of the last 12 months Oct 12, 2026
Technologies in use
29
Postings analysed
8
Open now
8
Modernity
74 /100

What programming languages does Rakuten Kobo use?

C# is named in 38% of job postings at Rakuten Kobo, followed by JavaScript (38%), Ruby (25%), SQL (13%).

C# 3 38% required in 100% · 3 open now · since Aug 2026
JavaScript 3 38% required in 100% · 3 open now · since Aug 2026
Ruby 2 25% optional · 2 open now · since Aug 2026
SQL 1 13% required in 100% · 1 open now · since Sep 2026
TypeScript 1 13% required in 100% · 1 open now · since Aug 2026

What frameworks and libraries does Rakuten Kobo use?

React.js is named in 38% of job postings at Rakuten Kobo, followed by ASP.NET Core (25%), Playwright (25%), Selenium (25%).

React.js 3 38% required in 67% · 3 open now · since Aug 2026
ASP.NET Core 2 25% required in 100% · 2 open now · since Aug 2026
Playwright 2 25% optional · 2 open now · since Aug 2026
Selenium 2 25% optional · 2 open now · since Aug 2026
Entity Framework Core 1 13% optional · 1 open now · since Sep 2026
Next.js 1 13% optional · 1 open now · since Aug 2026

What databases does Rakuten Kobo use?

MS SQL is named in 38% of job postings at Rakuten Kobo, followed by RavenDB (25%).

MS SQL 3 38% required in 67% · 3 open now · since Aug 2026
RavenDB 2 25% required in 50% · 2 open now · since Aug 2026

What cloud and platforms does Rakuten Kobo use?

RabbitMQ is named in 25% of job postings at Rakuten Kobo, followed by Tableau (25%), Azure DevOps (25%), GitHub (25%).

RabbitMQ 2 25% required in 100% · 2 open now · since Aug 2026
Tableau 2 25% required in 100% · 2 open now · since Sep 2026
Azure DevOps 2 25% required in 50% · 2 open now · since Aug 2026
GitHub 2 25% required in 50% · 2 open now · since Aug 2026
Azure 2 25% optional · 2 open now · since Aug 2026
Kubernetes 2 25% optional · 2 open now · since Aug 2026
Looker 1 13% required in 100% · 1 open now · since Sep 2026
Power BI 1 13% required in 100% · 1 open now · since Sep 2026

What developer tools does Rakuten Kobo use?

Git is named in 38% of job postings at Rakuten Kobo, followed by Microsoft Excel (25%), ArgoCD (13%), AutoCAD (13%).

Git 3 38% required in 100% · 3 open now · since Aug 2026
Microsoft Excel 2 25% required in 100% · 2 open now · since Sep 2026
ArgoCD 1 13% required in 100% · 1 open now · since Sep 2026
AutoCAD 1 13% required in 100% · 1 open now · since Sep 2026
Docker 1 13% optional · 1 open now · since Aug 2026

Which engineering practices does Rakuten Kobo ask for?

A/B Testing is named in 25% of job postings at Rakuten Kobo, followed by CI/CD (25%), MVC (13%).

A/B Testing 2 25% required in 100% · 2 open now · since Sep 2026
CI/CD 2 25% required in 100% · 2 open now · since Aug 2026
MVC 1 13% optional · 1 open now · since Sep 2026

What does each Rakuten Kobo team work with?

The technologies each team's postings require most often, with the number of postings that require them.

Backend

3 postings
C#3
Git3
JavaScript3
ASP.NET Core2
MS SQL2
RabbitMQ2

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How modern is the Rakuten Kobo stack?

Modern 74/100

Rakuten Kobo scores 74 out of 100 (Modern). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 0; legacy ones: 0.

How common is the Rakuten Kobo stack in its industry?

Share of the 473 companies in the same industries, whose stack Alion knows, that use each technology.

C#14%
JavaScript47%
MS SQL7%
React.js33%
ASP.NET Core3%
Azure24%
Azure DevOps7%
GitHub21%
Kubernetes28%
Playwright7%

Questions about the Rakuten Kobo tech stack

What programming languages does Rakuten Kobo use?

The languages named in Rakuten Kobo job postings are C# (38%), JavaScript (38%), Ruby (25%), SQL (13%), TypeScript (13%), as a share of the 8 postings of the last 12 months.

Does Rakuten Kobo use React.js?

Yes. React.js is named in 3 of 8 job postings (38%) and required in 2 of them.

What cloud and platforms does Rakuten Kobo use?

The cloud and platforms named in Rakuten Kobo job postings are RabbitMQ (2), Tableau (2), Azure DevOps (2) (postings in brackets).

What skills do you need for a Backend job at Rakuten Kobo?

Backend postings at Rakuten Kobo most often require C# (3), Git (3), JavaScript (3), ASP.NET Core (2), out of 3 postings in the last 12 months.

Is the Rakuten Kobo tech stack changing?

No new technology has appeared in Rakuten Kobo job postings in the last six months.

How modern is the Rakuten Kobo tech stack?

Rakuten Kobo scores 74 out of 100 (Modern). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 0; legacy ones: 0.

How does Alion know the Rakuten Kobo tech stack?

Alion reads every job posting Rakuten Kobo publishes and tags the technologies each one names. The figures on this page count the 8 postings of the last 12 months and were updated on Oct 12, 2026.

Method and citation

Alion reads every job posting the company publishes and tags the technologies each one names. Shares count the postings of the last 12 months, open and closed; the company's own products are counted apart. How we count

Alion, "Rakuten Kobo tech stack: 29 technologies from 8 job postings", as of Oct 12, 2026. https://alion.io/company/rakuten-kobo/technologies

Licence: CC BY-SA 4.0JSON