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Zellis

Zellis

Software DevelopmentFlag of GBBristol, England, United Kingdom1001-2000 Employees

Company overview

Headquarters740 Waterside Drive, Aztec West, Almondsbury, Bristol, England BS32 4UF, GB
Phone number+448000420315
Website
SIC737
Keywords
Payroll, Workforce Management, HR, Managed Services, HCM, AI
Founded1963
Employees1001-2000
Socials

Key Contacts at Zellis

Flag of GB

Mandy Simpson

Executive Assistant To Chief Executive Officer

Flag of GB

Kimberley Blain

Executive Assistant to Chief Executive Officer, Zellis business unit

Flag of GB

Emma Isichei

Chief Marketing Officer

Zellis Email Formats

Zellis uses 2 email formats. The most common is {first name}.{last name} (e.g., john.doe@zellis.com), used 76.1% of the time.

FormatExamplePercentage
{first name}.{last name}
john.doe@zellis.com
76.1%
{first initial}.{last name}
j.doe@zellis.com
23.8%

About Zellis

Zellis helps organisations unlock better outcomes by creating exceptional experiences for their people. As the UK and Ireland’s leading provider of HR, pay, workforce management (WFM), and benefits solutions, we put employees at the heart of every solution. Our tools give teams the insights, flexibility, and support they need to perform at their best. By removing barriers and embracing innovation, we empower organisations to reimagine what’s possible. Together, we Unlimit What’s Next for both people and performance. In 2025 we brought together the very best of Zellis, elementsuite, and Hastee into a seamless experience, providing a single, coherent system for the modern workplace. Together, we deliver an adaptable, best-in-class, end-to-end solution that helps customers achieve smarter, faster, and more confident HR, WFM, and Pay outcomes. At Zellis we understand the urgency and scale of modern workforce needs, and we support the full employee lifecycle. Our solutions help pay 1 in 7 of the UK and Ireland’s working population. Zellis was named Payroll Software Supplier of the Year at the Global Payroll Awards 2024 and 2025. Our flagship solution, Zellis HCM Cloud, has been recognised as Payroll Software of the Year (CIPP 2020, 2021, 2024) and has won the Payroll & HR Software Product Award (The Rewards 2019, 2021, 2023, 2024).

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Zellis revenue & valuation

Annual revenue$284,200,000
Revenue per employee$193,000
Estimated valuation?$909,300,000
Total fundingNo funding

Employees by Management Level

Total employees: 1001-2000

Seniority

Employees

Entry
Manager
Senior

Employees by Department

Zellis has 951 employees across 18 departments.

Departments

Number of employees

Funding Data

Zellis has never raised funding before.

Zellis Tech Stack

Discover the technologies and tools that power Zellis's digital infrastructure, from frameworks to analytics platforms.

6sense

6sense

Marketing automation

reCAPTCHA

reCAPTCHA

Security

Gravity Forms

Gravity Forms

Form builders

Swiper

Swiper

JavaScript libraries

Hotjar

Hotjar

Analytics

Zoominfo

Zoominfo

Analytics

Twitter Emoji

Font scripts

jQuery

jQuery

JavaScript libraries

HubSpot Analytics

HubSpot Analytics

Analytics

LiteSpeed

LiteSpeed

Web servers

Apple iCloud Mail

Apple iCloud Mail

Webmail

HTTP/3

HTTP/3

Miscellaneous

Frequently asked questions

Zellis is located in Bristol, England, GB.
You can reach Zellis at +448000420315.
Zellis was founded in 1963, making it 63 years old. The company has established itself as a significant player in its industry over this time.
Zellis has approximately 1001-2000 employees. The company continues to grow its workforce to support its business operations and expansion.

4.8

40,000 users

top 50
high performer
most used
tier 1 accuracy

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