Introist uses StackOne to Launch New Enterprise-Grade Integrations and Expand Automation for HR Teams
Highlights
- Delivered deep, reliable HRIS and ATS integrations in days
- Used StackOne's read and write capabilities to unlock complex use cases
- Scale integration capabilities with a high level of data security and compliance
HR Workflow Automation Platform
Summary
Introist transforms HR operations through an advanced, secure automation platform. The company eliminated manual employee onboarding, absence management, and well-being workflows. They selected StackOne to expand HRIS and ATS integrations rapidly while maintaining enterprise-grade security and real-time user experience.
“Before StackOne, we built integrations natively. But as we scaled, we realized we need to be really deep within the systems our customers are using, and it became clear it’s not feasible for us to be experts in all those systems, especially at early stages.”
— Klaus, CTO at Introist
What is Introist?
Introist is a SaaS platform automating critical HR processes for tech consulting firms and employee-centric organizations, delivering state-of-the-art employee experiences with deep, meaningful data integrations across systems.
“We are a B2B SaaS platform focusing on automation for HR teams, focused on automations related to employee management and the full employment journey.”
— Klaus, CTO at Introist

The Integration Challenge
Introist initially built integrations in-house but faced unsustainability as system complexity and quantity expanded. The company needed seamless employee data synchronization across HR systems, ATS platforms, and other relevant tools.
“You can’t have great automations without great data. One of our key objectives with automations is deep personalization, and you can only achieve that level of personalization if you are able to sync that data for hundreds, even thousands, employees at a time.”
— Klaus, CTO at Introist
Why StackOne
A. Trust and Reliability
Introist needed a reliable partner for critical integrations with robust support ensuring seamless functionality across complex customer setups.
B. Security
Security is paramount in HR. StackOne’s architecture avoids unnecessary customer data storage, assuring clients that employee data resides only in their systems or HR systems themselves.
“The other very important aspect in the HR field is definitely security. Being able to present a great security posture is really important, so it’s quite unique that, with StackOne, we can guarantee to customers that none of their employee related data is stored in the middle.”
— Klaus, CTO at Introist
“When you’re able to clearly show that data sharing is limited, it makes such a smooth security review phase to get through with our customers.”
— Klaus, CTO at Introist
C. Support for Wide Range of Systems
StackOne integrates with numerous HRIS and ATS systems, enabling deep reliable integrations without extensive system-specific expertise.
D. Read & Write, Real-Time API
Real-time read/write capabilities enabled Introist to push data back into HR systems, supporting increasingly complex use cases as automation offerings evolved.
Onboarding Experience
Integration was smooth and efficient. The ability to quickly connect to new systems during sales discussions enhanced deal closure rates. Instead of lengthy development cycles, StackOne enabled rapid system integration.
“We can really rely on StackOne’s support and partnership on those cases.”
— Klaus, CTO at Introist
The Results
- Expanded integration offerings: Confident integration with diverse HRIS and ATS systems with minimal development effort
- Improved sales process: Quick integration capabilities positively impacted client acquisition
- Enhanced security and compliance: European clients particularly appreciated high data security assurance
- Scalability and future-readiness: Real-time read/write support enables scaling as client needs evolve
Next Steps
Introist prioritizes writing data back to HR systems to enable advanced automation features and deeper employee interaction, while exploring new integration categories.
“Writing data back to HR systems is definitely one of our priorities going forward, because we’re moving more and more toward not only pushing data through the automation but also interacting much more deeply with employees.”
— Klaus, CTO at Introist
“StackOne has made launching new integrations much faster, and it only took a few days to implement. Documentation and support are amazing, impressed by rapid feature development!”
— Klaus Julin, CTO, Introist