For BigTime Software, partnerships aren’t just about extending functionality, they’re about making their platform work in the real world. As a provider of professional services automation (PSA) software, BigTime sits at the centre of how their customers run their businesses, connecting projects, people, and financials in one system. But increasingly, that’s not enough on its own.
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Each integration in the project was delivered in a 4 week turn around.
About
BigTime Software is a private equity-funded company with offices in Chicago, Phoenix, Boston, and Poland committed to helping clients run their professional services firms more efficiently.
Industry
Professional Services
Company Size
51-200
Headquarters
Chicago, Illinois, United States
Systems Integrated
That’s where Versori comes in as BigTime’s integration partner, the role isn’t just to connect systems, but to make sure BigTime works seamlessly inside each customer’s world. And in the case of Peak Projects, that became the difference between keeping the client or not.
Peak Projects, a premiere project management firm, had already committed to modernising their internal systems, moving away from legacy tools, introducing new platforms, and automating processes that had historically been handled manually.
They were raising the bar for a new tech stack. BigTime was the platform they wanted to move forward with. It aligned with how they wanted to run their business, bringing together time tracking, project management, and financial workflows into a single system.
The problem was connecting existing and/or new systems to make the full stack work together. Their operations depended on multiple systems working together, particularly when it came to employee data, payroll, and expenses. And without the right integrations in place, BigTime couldn’t slot into that environment in a way that worked.
So despite being the preferred platform, the decision to move forward weighed on the ability to integrate all of the systems together, and ensure they were connected in the right way.
The systems that they were implementing:
The challenge wasn't just to connect the systems to BigTime, it was to recreate and improve the existing workflows too.
At the centre of it, was a deceptively simple process: managing employee PTO. Previously, this had involved manual entry across systems, duplicated effort, and a constant risk of error or missed requests. The integration needed to remove the friction entirely.
Versori rebuilt the workflow: PTO requests could be captured, filtered, transformed and automatically synced into Bigtime, without any manual intervention, duplication or breakages as systems changed.
At the same time, additional integrations were developed and deployed, including a completely custom connection between BigTime and Ramp, where no native option previously existed.
The approach: Connect ADP to BigTime for automated PTO syncing, eliminating manual entry. ADP offers rich APIs for workforce management, but when it comes to specific workflows, such as PTO, authentication and permissions become an invisible wall if not handled correctly. ADP uses OAuth2.0 as the primary authentication model, but the real complexity lies in the scope management and tenant-specific authorisation.
Versori’s Plan Agent runs on a series of MCPs to scrape the web and conduct deep research to find correct scopes and documentation, specific to the customer’s requirements. This includes automating token refresh logic. The Agents can dynamically request the correct permissions based on use-case intent, such as balance reads, request creation and accrual history.
With the integrations in place, Peak Projects could see how BigTime would work inside their business as part of a connected system.
The impact was immediate:
...supporting Denby’s new ecommerce platform launch and wider transformation roadmap. In total:
With the foundations in place, the focus has shifted from enabling one customer to scaling integration capabilities across BigTime’s wider ecosystem.
Together, the teams continue to deliver tailored solutions for customers with increasingly complex requirements, connecting platforms like Sage Intacct and other critical systems into a seamless, unified architecture. It’s a relationship built not just on delivery speed, but on a shared understanding of what modern software needs to succeed.
For BigTime, that means ensuring their platform can adapt to each customer’s environment without compromise. For Versori, it means continuing to extend what’s possible through integrations that feel native, reliable, and built for scale.
And as new customers bring new systems, new challenges, and new expectations, that partnership continues to grow, turning integrations from a potential blocker into a consistent driver of growth.
