Financial Leasing SaaS Platform

Context

Financial leasing spans project, settlement, assisted-loan and post-loan systems with continuously synchronized money and asset state.

My role

I led post-lease engineering, analyzed change impact, designed penalty, asset-change and warning workflows, and mentored new team members.

Architecture

Spring Boot and MyBatis host core services, RabbitMQ coordinates asynchronous work and Activiti manages stateful workflows.

Key challenges

• Penalty calculation crosses four systems, where a partial failure can create accounting differences.
• Asset changes affect downstream settlement and post-loan data, requiring explicit ordering and recovery.

Approach

• Mapped data ownership around business documents and state transitions, with explicit validation and recovery points.
• Modeled asset changes and warning types as workflows so decisions remain traceable.

Outcome

• Delivered cross-system penalty and asset-change designs with consistency and recovery in mind.
• Established project documentation that helps new engineers understand domain boundaries.