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Leonel Rosales Zavaleta

Tech Lead - Senior Software Engineer 👨‍💻

Can work in or around Madrid

  • 40.4167
  • -3.70358
  • Suggested rate €400 / day
  • Experience 7+ years
  • Response rate 100%
  • Response time 24 hours
Propose a project The project will begin once you accept Leonel's quote.
Propose a project The project will begin once you accept Leonel's quote.

Location and workplace preferences

Madrid, España
Can work onsite in your office in
  • around Madrid and 50km


Project length
Would prefer:
  • Between 1-3 months
  • Between 3-6 months
  • ≥ 6 months
Would prefer to avoid:
  • ≤ 1 week
  • ≤ 1 month
Business sector
  • Digital & IT
  • Banking & Insurance
  • Biotech
  • Film & AV
  • Civil Engineering
+30 autres
Company size
Would prefer:
  • 11 - 49 people
  • 50 - 249 people
  • 250 - 999 people
  • 1000 - 4999 people
  • ≥ 5000 people
Would prefer to avoid:
  • 1 person
  • 2-10 people


Freelancer code of conduct signed
Read the Malt code of conduct

Verified email


  • Español

    Native or bilingual

  • Inglés



Skills (25)

  • Languages
  • Beginner Intermediate Advanced
  • Beginner Intermediate Advanced
  • PHP
    Beginner Intermediate Advanced
  • SQL
    Beginner Intermediate Advanced
  • Cloud
  • Beginner Intermediate Advanced
  • Frameworks
  • Beginner Intermediate Advanced
  • Beginner Intermediate Advanced
  • Yii
    Beginner Intermediate Advanced

Leonel in a few words

I am a lover of details, that is why my specialty is the front end, I have always been a detail oriented person, I really LOVE (yes in capital letters) developing software.

I started when I was a kid I was 14 years old making my first website for a science project related to fish (I love the fish too).

Throughout my career I have developed many projects, ERP, Customized Systems for companies, Software in the Health Tech sector, Education, Banking, Public Administrations, Mobile Apps, Marketing Platform, with different types of clients in the United States, UK, Holland, Spain , Salvador, etc.

I enjoy each of the processes of software development, I have experience in backend, frontend, database, mobile apps, testing (yes, I am a dev who likes to test his software).

Humans like hight quality in life, food , work, health, why not also have quality software? I use a lot of tools regarding QA ESLint Git Hooks, Prettier, Platforms like SonarQube, Unit and Integration Tests, because if we are going to do something, we must do it the right way :)

I have always worked with excellent communication and agile methodologies.

Let's develop amazing things 🧑🏻‍💻


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Indra - Indra

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Text Ripple

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January 2017 - October 2019 (2 years2 years and 9 months)


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January 2017 - October 2019 (2 years2 years and 9 months)

Inversiones Torrento Aguilar

Analista de desarrollo de software

El Salvador

May 2015 - February 2017 (1 year1 year and 9 months)

Desarrollo de Sistema de Gestión Empresarial, utilizando las siguientes tecnologías: Yii Framework, (PHP) Mysql, Bootstrap, Jquery, JasperServer, Microsoft Sourcesafe, Git, JasperSoftStudio


Asesor de Tecnologías

El Salvador

May 2012 - May 2015 (3 years3 years)

Intel Retail Edge, Apple Sales Training, Asesor del areá de Tecnología.

Corte Suprema de Justicia de El Salvador

Software Development Junior

El Salvador

January 2011 - December 2011 (11 months)

Desarrollo de sitio web administrable (interno) utilizando php, mysql, jquery y svn como versionador.

1 project on Malt

(1 rating)

Juan Manuel - Motivait Holdings


Leonel nos ayudó con una aplicación desarrollada en Ionic y destacó su buena disponibilidad, su conocimiento y lo rápido que se integró con el equipo. Un excelente profesional, totalmente recomendable