QualiVendas Insurance Sales Platform

Client Qualicorp - Brazil's largest health insurance administrator

Overview

QualiVendas is a nationwide digital platform used to manage the full lifecycle of health insurance sales in Brazil.

The system replaced manual and fragmented processes with a structured digital workflow capable of handling high proposal volume while enforcing strict business and regulatory rules.

The ecosystem includes two connected platforms:

• Broker Platform: used by brokers to create and submit health insurance proposals
• Admin Platform: used by supervisors and managers to control permissions, monitor operations, and manage governance

I worked on the project in two phases: first as a Full-Stack Engineer building core features, and later as a Technical Lead guiding technical decisions, code quality, and delivery execution.

My Role

Full-Stack Engineer

I built and maintained features across both frontend and backend layers.

My responsibilities included:

• Building scalable frontend flows using Vue.js
• Developing REST APIs using Node.js and Express.js
• Modeling complex business relationships in Neo4j
• Implementing proposal validations and eligibility rules
• Managing proposal status transitions (draft, submitted, approved, rejected, returned)
• Integrating document generation and AWS S3 storage
• Supporting production issues and improving system stability

I worked across the full lifecycle of a proposal, from UI interaction to backend processing and database persistence.

Technical Lead (Later Phase)

After transitioning into a Technical Lead role, I expanded my responsibilities to include:

• Defining technical approaches for new features
• Reviewing pull requests and maintaining code quality standards
• Coordinating frontend, backend, and QA teams
• Supporting sprint planning and technical discussions
• Ensuring delivery consistency across releases
• Acting as a bridge between business stakeholders and developers
• Managing urgent production issues and hotfixes

I continued contributing code while helping guide the technical direction of the platform.

Problem

Health insurance sales require strict control over eligibility rules, billing logic, and proposal validation. Manual processes created delays, inconsistencies, and operational risk.

The platform needed to:

• Support high-volume proposal creation nationwide
• Enforce strict business and regulatory rules
• Serve multiple user roles with different permissions
• Track proposal status across its full lifecycle
• Allow corrections and resubmissions safely
• Provide governance and visibility for supervisors and managers

The challenge was building a reliable system that could handle operational complexity while remaining scalable and maintainable.

Solution

I helped build and evolve both the broker and admin platforms with a focus on:

• Reliable proposal workflows
• Strong validation and rule enforcement
• Clear lifecycle control
• Scalable architecture
• Production stability

On the frontend, I implemented structured multi-step workflows and role-based UI restrictions.
On the backend, I implemented business logic, validation layers, lifecycle transitions, and domain modeling.

As the platform matured, I also helped improve long-term maintainability through refactoring, code review, and technical leadership.

Application Features

Broker Platform

• Multi-step proposal creation workflow
• Policyholder and dependent registration
• Plan eligibility validation
• Billing configuration and data verification
• Digital document generation and storage (AWS S3)
• Proposal submission and status tracking
• Correction and resubmission flows

Admin Platform

• Role-based access control
• Hierarchical permission management
• Operational oversight for supervisors and managers
• Proposal monitoring and workflow visibility
• Governance controls across broker structures

Shared Workflow Across Platforms

• Consistent proposal status tracking across broker and admin systems
• Controlled status transitions with validation checks
• Centralized rule enforcement at the application level
• Production support tools to maintain operational continuity

Technical Highlights

Full-Stack Engineering (Vue + Express)

• Vue.js frontend architecture for scalable enterprise workflows
• REST API development with Node.js / Express.js
• Role-based UI and backend validation working together
• Continuous refactoring to maintain clarity in complex workflows

Domain Modeling & Workflow Control

• Neo4j graph modeling for relationship-heavy insurance logic
• Controlled proposal lifecycle transitions
• Validation across proposal, dependents, billing, and document flows
• Strict enforcement of regulatory and business rules

Delivery & Production Reliability

• Transition from feature development to technical leadership
• Code review and standards enforcement
• Cross-team coordination (frontend, backend, QA, PO, PM)
• Sprint planning and execution in a Scrum/Kanban hybrid model
• Rapid response to production issues and urgent fixes

What This Project Demonstrates

• Full-stack engineering in a business-critical insurance domain
• Experience building high-volume production workflows
• Strong business rule enforcement and lifecycle management
• Graph database modeling (Neo4j) for complex relationships
• Governance-aware system design with hierarchical permissions
• Technical leadership progression within a live enterprise product
• Delivery ownership across development, maintenance, and production support

Impact

QualiVendas is a large-scale production system directly supporting nationwide health insurance sales operations.

My contributions helped build, stabilize, and evolve the platform across multiple phases, from full-stack feature development to technical leadership, ensuring reliable proposal workflows, controlled governance, and consistent delivery in a complex enterprise environment.