I will fix a specific javascript angular or react bug

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diegoumanatech
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diegoumanatech
Diego Umana

About this gig

Have a reproducible issue in your existing JavaScript, Angular or React application? I can investigate a clearly defined bug, apply a focused fix and explain what changed.


Please message me before ordering with the error, reproduction steps, framework version and relevant code. I will confirm that the issue fits the package before we begin.


Basic covers one small, reproducible issue in an existing component. Standard covers up to two related small issues. Premium covers up to three related small issues. Delivery includes the changed code, a brief explanation and one revision within the agreed requirements.


You must provide a project that can be run locally, setup instructions, anonymized test data and the expected behavior. New features, redesigns, full application development, major version upgrades, third-party paid licenses, production deployment and backend infrastructure work require a custom quote.


I do not promise that every issue can be solved within a fixed package before reviewing the code. Spanish and English communication available.

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Get to know Diego Umana

Diego Umana

Programmer, Systems Analyst and SQL Developer

  • FromEl Salvador
  • Member sinceOct 2026
  • Languages

    Spanish, English
I am a full stack programmer and systems analyst with over 3 years of experience. I develop web applications with Java, Spring Boot, Angular and JavaScript, and work with SQL Server, PostgreSQL, MySQL and Oracle. I can help with SQL queries, database reports, API integrations, requirements documentation, Power BI dashboards and manual QA testing. My background includes financial systems, web development and digital signature workflows. I focus on clear scope, practical solutions, documented results and reliable communication. Available for small projects. Spanish and English.