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AtomicJar

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Making integration testing easier for developers across the software development lifecycle

New York City, United StatesFounded 2021Other B2B Software
Valuation $100–250M Last recorded · 2023
Revenue $1–10M Latest reported FY
Headcount <100 Current team size
Total funding $10–50M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for AtomicJar and the history behind them.

About AtomicJar

AtomicJar is a startup focused on enhancing the productivity of software developers by providing innovative tools for integration testing. Integration testing is a phase in software development where different modules or services are combined and tested as a group. AtomicJar's primary product, Testcontainers, is an open-source project that simplifies this process by allowing developers to run tests with real dependencies in a local environment. This helps developers identify and fix issues earlier, making the development cycle shorter and the final product more reliable.

The company operates in the software development market, specifically targeting developers and development teams who need efficient and effective testing solutions. Their clients range from small startups to large enterprises that rely on robust software applications.

AtomicJar's business model revolves around offering both free and premium services. The open-source Testcontainers project is available for free, fostering a large community of users and contributors. For more advanced needs, AtomicJar offers Testcontainers Cloud, a premium service that allows developers to offload their tests to the cloud. This service is currently in a limited private beta but promises to make local development, testing, and continuous integration (CI) processes more seamless and efficient.

The company generates revenue through subscriptions to its Testcontainers Cloud service. By providing a cloud-based solution, AtomicJar helps companies save on infrastructure costs and improve their development workflows, which in turn makes their products more reliable and their developers more productive.

In summary, AtomicJar is revolutionizing the way developers conduct integration testing, making it faster, easier, and more reliable. Their innovative tools and cloud services are designed to boost developer productivity and improve software quality.

Source: Dealroom company data

At a glance

Status
Acquired
Founded
2021
Headquarters
New York City, United States
Employees
3
Open positions
None listed
Dealroom signal
58.0/100
Industry
Enterprise Software
Sector
Other B2B Software, Open Source, Developer Tools
Business model
SaaS
Client focus
b2b

Funding history

3 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
ACQUISITION✓Exit Dec 2023 $0 — Docker ↗
SERIES A✓Equity / VC Jan 2023 $25M $100M Chalfen Ventures · Insight Partners · Irregular Expressions · Peter McKay ↗
Showing the latest 2 of 3 recorded eventsBook a demo for the full funding history →

Financials

Revenue over time

Revenue, earnings and other financial measures where available. Years marked “E” are estimates.

YearRevenueGrowth
2026
2025
2024
2023
2022 —
Company filings, research estimates and Dealroom dataBook a demo for the full financial model →

Growth signals

AtomicJar website traffic

Latest recorded traffic for AtomicJar is 2.6K monthly website visits, up 863% over the last three months. AtomicJar's team declined 88.9% over the past year.

Latest monthly visits2.6K 3-month web change+863% 1-year team growth-88.9%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Similar companies

Closest operating peers by Dealroom taxonomy

Company identity and context are open; selected comparison metrics preview what is available on the platform.

Showing 8 of the closest matchesCompare every metric →

Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

20 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed14 investors entered at this stage

  • Boldstart Ventures
  • Ian Livingstone
  • Jevgeni Kabanov
  • Zane Lackey
  • Leonid Igolnik
  • Natalie Diggins
  • Chalfen Ventures
  • Guy Podjarny
  • Tribe Capital
  • Abby Kearns
  • Andrus Adamchik
  • Peter McKay
  • Dimitri Sirota
  • Simon Maple

Series A3 investors entered at this stage

Other known investors3 additional known investors

  • Docker
  • IA Seed Ventures
  • Mike Chalfen
Team profiled 7 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 2 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
1 countries with
team presence
🇬🇧 United Kingdom100%
1 country shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about AtomicJar on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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