How Zallpy Revolutionized Digital Onboarding with HR Automation Development at ADP

In an increasingly competitive landscape, companies need to hire fast, efficiently, and without compromising the quality of the hiring process. But what happens when the challenge is not hiring hundreds, but 15,000 employees at once?

That was exactly the situation faced by ADP, a global leader in Human Capital Management (HCM) and payroll, which found in Zallpy the ideal partner to turn a complex logistical and legal challenge into a simple, automated, and scalable workflow.

The client was already using the ADP eXpert system, but needed to go further. The mission was clear: to create an HR automation solution capable of handling thousands of simultaneous hires, while complying with Brazil’s complex labor legislation, reducing timelines, and ensuring full compliance and security.

From challenge to opportunity

When Zallpy joined the project, it became clear that the key to success would not be technology alone, but the creation of an intuitive and fast process for both HR teams and candidates. More than software, it was about building an experience — and this is where HR automation development became a true competitive differentiator.

The solution was built using technologies such as Node.js, React, Progress, MongoDB, and AWS, organized into five major stages and released in rapid cycles, allowing each new feature to be immediately used by ADP’s clients.

Key innovations delivered included:

• Digital Onboarding: candidates enter their own data and documents, which are automatically routed for approval.
• Benefits Audit: integrated checks to ensure all terms and enrollments are correct.
• Document Management: centralized file storage in a secure and accessible repository.
• B2B Integration: automatic data transfer to the end client, eliminating rework.

The real impact of automation

The result was a much faster digital onboarding process, with a dramatic reduction in the time between document submission and official hiring. The solution not only removed bureaucracy from the workflow, but also gave companies the ability to scale their hiring processes without operational bottlenecks.

For HR teams, this means fewer repetitive tasks and more focus on strategic activities. For candidates, it means a smooth experience, free from redundant steps or unnecessary delays.

More than technology: partnership and business understanding

A central aspect of this case is that Zallpy did not simply “execute a request,” but immersed itself in the client’s context to truly understand their challenges and objectives. This consultative approach, combined with the team’s strong soft skills, ensured that the solution was genuinely aligned with business needs and capable of evolving alongside them.

The ADP experience shows that custom software development for HR is far more than a technological differentiator — it is a strategic tool for companies that want to hire with speed, security, and scale.

If your organization also needs to turn complex people management processes into efficient, digital workflows, Zallpy can help create a solution tailored to your challenge.