When someone is hired or updated in UKG Pro, their profile appears in 15Five automatically — nobody retypes it. Flexspring connects UKG Pro to 15Five so HR can run performance reviews for every employee in the company without maintaining a second list of people, and so completed review data comes back into UKG Pro where adjustments, bonuses, and salary promotions are made.
The two use cases build on each other. Bringing new hires and employee updates into 15Five is the foundational integration, and the performance review data flowing back to UKG Pro depends on it. 15Five integrations work with UKG Pro.
Flexspring builds, hosts, and monitors the connection for you and does all the data mapping, including your custom fields. There are no files to upload and nothing for your team to maintain. A turnkey integration goes live in 1-2 weeks and a custom integration in 8-10 weeks. With Flexspring, you only pay for the use case or use cases you need.
Here are the two most popular use cases for integrating 15Five with UKG. Each row names the direction the data travels. 15Five integrations work with UKG Pro. Flexspring also does custom integration work for one-time payments, banking and tax, expense management, learning management, equity systems, background checks, and assessments.

Flexspring iPaaS does not store employee data beyond temporary transaction logs, and meets SOC 2, GDPR and ISO 27001 standards.
With data integration, new hires and employee updates move from UKG Pro into 15Five automatically, creating the employee profiles your team needs to run performance reviews, and completed performance review data flows back into UKG Pro. 15Five integrations work with UKG Pro. Flexspring builds the integration to match your custom fields and business rules, then hosts and monitors it.
You decide which information you want to sync, and a data integration expert like Flexspring maps every field between the two systems and builds the connection. Custom integrations by Flexspring include unlimited custom fields and unlimited business rules. There is nothing for your team to install or maintain. The connector comes in a turnkey edition built on standard fields and a custom edition for businesses that need more fields or their own business rules.
With data integration, new hires and employee updates sync from UKG Pro into 15Five, including your custom fields, creating the employee profiles HR needs to manage performance reviews. Completed performance review data flows back from 15Five into UKG Pro, so adjustments, bonuses, and salary promotions can be made to the employee’s payroll. You can also add one-time payments, banking and tax, expense management, learning management, equity systems, background checks, and assessments.
Flexspring builds, hosts, and monitors the connector. A turnkey integration goes live in 1-2 weeks. A custom integration, for businesses that need more fields or their own business rules, goes live in 8-10 weeks. Custom integration by Flexspring includes unlimited custom fields and unlimited business rules. Flexspring does all the data mapping, so no internal IT resources are needed.
Flexspring does not store employee data beyond temporary transaction logs, and does not require anyone to handle the data manually. Flexspring meets SOC 2, GDPR and ISO 27001 standards.
No internal IT resources are needed to create your data integration. Flexspring’s team builds the integration to your requirements and monitors it afterwards, including handling API changes from either vendor. Your part is deciding which use cases you need and confirming Flexspring’s recommendations for how your fields should map.
With data integration, when someone is hired or updated in UKG Pro, their profile appears in 15Five automatically — nobody retypes it. HR can run performance reviews for anyone in the company without maintaining a second list of people, and the review data that comes back lands in UKG Pro where pay decisions are made.
The best way to connect 15Five to UKG Pro depends on your data and business requirements. A standard connector can work for simple data flows, while custom fields and unique business rules require a tailored integration. If you go the custom route, you can build the integration yourself or choose a managed integration like Flexspring’s — built and maintained for you, which is typically faster and cheaper.
The guide includes pricing for each use case, how to choose between essential and custom, and which version fits your team. Sent within one business day.
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