Fictional company logo

Companies using Sidekiq by Contributed Systems in 2025

As of 2025, 520 verified companies use Sidekiq – across industries, company sizes, and geographies. This is real, verified data. Whether you’re looking to analyze the market, build a target list, or get a sales edge – this is your starting point.

https://www.contribsys.com

What is Sidekiq by Contributed Systems?

Sidekiq by Contribsys, is a background processing library for Ruby. It utilizes Redis for message queuing. It’s designed for use in web applications and other software systems requiring asynchronous task execution, and is commonly utilized by software engineering and DevOps teams.

Last updated date

August 17, 2025

Number of Companies using

520

The majority are based in the

United States

Most common industry?

Software

Sidekiq’s sample user list in 2025

Company Name

Country

Industry

Employees

Revenue

Product

Walmart

United States flag
United States

Department Stores, Shopping Centers & Superstores

2098500

$681B

Sidekiq

Apple

United States flag
United States

Computer Equipment & Peripherals

164000

$400.4B

Sidekiq

McKesson

United States flag
United States

Drug Stores & Pharmacies

43000

$359.1B

Sidekiq

Verizon

United States flag
United States

Telephony & Wireless

99400

$135.3B

Sidekiq

CISCO

United States flag
United States

Telecommunication Equipment

90400

$55.6B

Sidekiq

Engie

France flag
France

Electricity, Oil & Gas

97000

$84.4B

Sidekiq

Oracle

United States flag
United States

Custom Software & IT Services

159000

$55.8B

Sidekiq

Comcast

United States flag
United States

Broadcasting

182000

$123.6B

Sidekiq

Department of Homeland Security

United States flag
United States

Federal

260000

$97.3B

Sidekiq

Adobe

United States flag
United States

Business Intelligence (BI) Software

30709

$22.6B

Sidekiq

Showing 10 of 520 results

Page 1 of 53

We have data on 520 companies that use Sidekiq. Our Sidekiq customers list is available for download and comes enriched with vital company specifics, including industry classification, organizational size, geographical location, funding rounds, and revenue figures, among others.

Get a Free Sample of Companies that use Sidekiq

We’ll send you a personalized preview of companies using Sidekiq—tailored to your ideal customer profile. No fluff. Just verified data. And a chance to turn tech signals into pipeline.

Sidekiq users and customers by country

United States flag
United States
France flag
France

2.6K Companies

United Kingdom flag
United Kingdom

2.6K Companies

Brazil flag
Brazil

2.6K Companies

India flag
India

2.6K Companies

Where Sidekiq Shows Up Most

Sidekiq is used across a wide range of sectors:

Software

Business Services

Custom Software & IT Services

Finance

Business Intelligence (BI) Software

From lean startups to global enterprises, Sidekiq’s footprint is wide, and that means opportunity.

sectors

How It Works

It’s everything you wish outbound was—automated, precise, and scalable.

  • Landbase finds and qualifies your ideal prospect data automatically
  • Landbase deploys specialized AI agents to generate and run high-converting campaigns
  • Landbase executes across all channels, handling all the technical complexity behind the scenes.
  • Your pipeline fills up. You get to focus on strategy, not busywork.

Trusted by High-Performing GTM Teams

Join the teams using Landbase to:

  • Eliminate manual prospecting
  • Fill pipeline faster
  • Win against competitors
  • Built for SDRs, AEs, RevOps, and GTM Leaders
  • Powered by AI. Delivered with Speed

This data is updated on August 17, 2025

Sidekiq by Contribsys is a background processing library for Ruby. It utilizes Redis for message queuing and is designed for web applications needing asynchronous task execution.

As of 2025, 520 verified companies are using Sidekiq.

Sidekiq is most commonly used in the Software industry, followed by Business Services and Custom Software & IT Services.

Sidekiq is most popular in the United States, followed by France and the United Kingdom.

Some large companies using Sidekiq include Walmart, Apple, McKesson, and Verizon.