Project Overview

PayEm is a global spend and procurement platform for modern finance teams. I joined as the solo product designer for an 8-month with a primary mission: to design and deliver an entirely new invoicing solution from scratch while simultaneously improving the overall user experience across the platform.

Because the invoicing feature didn’t exist, I was responsible for shaping the entire experience—aligning business goals, complex technical constraints, and diverse user needs into a single, cohesive product.

The challenge

PayEm's platform was powerful but lacked a critical component: native invoicing. Customers were forced to use third-party tools, creating a disjointed and inefficient experience. The challenge was not just to build a new feature, but to design a foundational pillar of the product.

The new solution needed to:

• Introduce a complete, end-to-end invoicing flow into the existing platform.
• Support complex customization needs, especially for clients with unique payment handling requirements.
• Differentiate the product with a strong, modern visual design and a simplified user experience.
• Ensure the architecture was flexible enough to accommodate a roadmap of future features without requiring a redesign.

My role

As the solo product designer, I led the entire design initiative for the invoicing module. I drove the project from initial research and strategy through to high-fidelity prototypes, usability testing, and final developer handoff, presenting design solutions and contributing directly to the product strategy.

Design

Discovery & Research

• Conducted a UX audit of the existing platform to identify areas for improvement.
• Performed deep competitive analysis on ~5 competitors, mapping their flows to identify opportunities and define the optimal user journey for PayEm.
• Ran product workshops with developers and stakeholders to create a Customer Journey Map (CJM), which was critical for understanding backend dependencies and technical possibilities.