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Jhonier Santana

Fullstack Software Developer

Jhonier Santana

May 2025 - Present

Multi-platform SaaS suite — Seguridad Penta / Bartik

Software Developer

ReactReact NativeElectron.jsTypeScriptREST APIs

Context

Seguridad Penta / Bartik runs a suite of 5 applications (web, mobile and desktop) used internally for critical operational workflows. The suite carried technical debt and inconsistent UX across platforms.

Problem

  • Key workflows had high friction, hurting internal adoption.
  • 4 SaaS applications with no defined frontend architecture, making new features hard to scale.
  • Outdated dependencies creating security risk and intermittent bugs.

Solution

  • Led the UX/UI redesign across all 5 applications, prioritizing consistent interaction patterns across web, mobile and desktop.
  • Designed and implemented the frontend architecture for the 4 SaaS applications, integrating REST APIs with a clear separation of layers (UI, state, data).
  • Directed the migration and update of critical dependencies, running cross-platform functional testing to validate stability.

Result

  • Higher usability and reported user satisfaction across redesigned workflows.
  • Reduced technical debt after the dependency migration.
  • Reusable architecture foundation for the team's future SaaS applications.