Kunal Tyagi is the co-founder and CTO of Bindbee, which he started with Om Anand in 2023. He's spent the last few years building and maintaining the connectors behind Bindbee across HRIS, payroll, and benefits systems like Workday, ADP, Gusto, and UKG. He writes about how those systems actually behave once you're past the docs: webhook authentication, real-time and bidirectional sync, pagination, SFTP versus API, and the engineering calls that decide whether an integration holds up in production or breaks at 2am.