JoinedUp vs Sirenum by Bullhorn
JoinedUp
Technology to help you easily manage and place shift workers
32 employees · est. 2017 · London, United Kingdom
Sirenum by Bullhorn is the older company (2017 vs 2013); JoinedUp is the larger of the two.
Side-by-Side Comparison
| Metric | JoinedUp | Sirenum by Bullhorn |
|---|---|---|
| Founded | ||
| Founded | 2017 | 2013 older |
| Headquarters | ||
| Headquarters | London, United Kingdom | London, United Kingdom |
| Employees | ||
| Employees | 32 larger | 6 |
| Industry | ||
| Industry | SaaS, Human Resources | Health Care, Logistics, Mobile |
| Funding Stage | ||
| Funding Stage | Series A | Series A |
| Total Funding | ||
| Total Funding | $2.00M | $3.79M |
| Funding Rounds | ||
| Funding Rounds | 1 | 4 |
| Services | ||
| Services | Shift Planning and Allocation, Time and Attendance Management, Payroll Calculation, Vendor Management and Automation, Data Insights and Reporting | Not tracked yet |
| Target Customers | ||
| Target Customers | Companies with Shift-based Workforce, Staffing Agencies, Logistics and Delivery Companies, Human Resources Departments | Not tracked yet |
| Taxonomy | ||
| Taxonomy | Workforce ManagementShift-Based StaffingTemporary StaffingCloud-Based SolutionsRecruitment TechnologyStaffing Agency Solutions +8 | Workforce ManagementCloud SoftwareShift ManagementStaff Lifecycle ManagementStaffing SolutionsRecruitment Technology +9 |
| Website | ||
| Website | joinedup.com | sirenum.com |
About JoinedUp
JoinedUp, operating under the slogan "Technology to help you easily manage and place shift workers", is a United Kingdom-based startup founded in 2017. Specializing in SaaS and Human Resources, JoinedUp offers a comprehensive platform that connects recruiters, temporary workers, and enterprise hirer...
About Sirenum by Bullhorn
Sirenum by Bullhorn is a workforce management platform founded in 2013 in London, UK. Its mission, encapsulated in its slogan, "Powering the Dynamic Workforce," is to optimize the deployment of hourly workers through advanced scheduling capabilities. The company operates across multiple sectors in...
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Compiled from the BounceWatch company index. We last looked at JoinedUp on 4 Aug 2025, and Sirenum by Bullhorn on 4 Aug 2025. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.
