Jariel Balberona Staff-Level AI-Native Software Engineer

Professional evidence

PRIVV

Frontend and product engineering for a capital-project platform with dense planning and financial workflows.

Feb 2025 - Mar 2026 Senior Software Engineer | Contract React / TypeScript / Vite / Tailwind CSS / TanStack Query / Zustand
  • Contributed to frontend modernization across a large, data-heavy React application.
  • Improved component, state, and server-data boundaries for complex planning interfaces.
  • Added automated testing and clearer modular ownership to support safer product change.

Context

A mature planning platform needed to evolve while preserving reliability across dense, high-trust user workflows.

Why it mattered

The contribution focused on making continued frontend change easier to reason about and verify under existing product constraints.

What I owned

  • Frontend architecture and implementation
  • Client-side state and server-data flow
  • Test coverage and maintainability improvements

Constraints

  • Existing production behavior and legacy application structure
  • Dense, interdependent planning interfaces
  • Low tolerance for confusing state or regressions

What I changed

  • Supported incremental modernization of the frontend toolchain and application structure
  • Separated feature, state, and data responsibilities more clearly
  • Strengthened automated verification around changed behavior

Context

PRIVV is a capital-project platform with dense planning and financial workflows. My contract work focused on frontend modernization and maintainability inside an established production system.

Responsibility

  • Frontend architecture and hands-on React and TypeScript implementation
  • Component, client-state, and server-data boundaries
  • Incremental modernization that respected existing product behavior
  • Automated testing around changed frontend behavior

Engineering contribution

The work improved the structure used to evolve complex interfaces without treating a mature codebase as a greenfield rewrite. The emphasis was clearer ownership, more predictable data flow, and verification that matched the risk of the changes.

Production constraint

Dense planning interfaces carry significant interaction state. Changes have to preserve established user workflows while making the application easier to maintain. That requires incremental architecture work rather than broad rewrites or unsupported outcome claims.