Interlock
A scalable billing platform that brings projects, time tracking, approvals, and invoicing into one workflow.
Khrystyna Viitov
BSA at Trinetix
A unified platform designed to replace fragmented tools and make complex project billing easier to manage.
The product brings project management, time tracking, approvals, invoicing, and operational data into one connected workflow.
I worked across the core product experience, from discovery and UX decisions to complex data-heavy interfaces and a Flutter-ready design system foundation.
Challenge
Multiple teams were using disconnected tools and inconsistent processes to manage projects, time, approvals, and billing.
Different teams followed different terminology, workflows, and approval processes. This created duplicated work, unclear ownership, and errors that became especially risky as the company moved toward a unified billing model.
The challenge was to create one scalable system that could support complex project structures while keeping workflows clear for both employees and managers.
Solution
I designed a connected product experience that brings project, time, approval, and billing workflows into one system.
I worked across People, Projects, Time Entry, Timesheets, Clients, and Administration, creating consistent patterns for complex data and approval states.
I also rebuilt the UI foundation into a Flutter-ready design system with reusable components, tokens, and states, making the product easier to scale and maintain across data-heavy screens.
Result
A more consistent product foundation that gives teams clearer workflows and creates a safer path toward company-wide billing.
The platform standardized previously fragmented workflows across teams and created a clearer connection between planning, time tracking, approvals, and invoicing.
The new design system also established a scalable foundation for future product development, helping design and engineering work from the same system.
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