Guillermo Cejas

Guillermo Cejas - Salsa

Full Stack Developer & Senior QA Automation Engineer | Argentina

Guillermo is a Software Engineer with over nine years of experience in software development working as team lead, full stack developer, and automation engineer. He is currently working as a development team leader with technologies such as JavaScript ES6, React and Redux in web applications for a company based in the USA. He has experience in software development specialized on web applications and applications running on Node.js. Guillermo is truly passionate about his work and constantly identifies process improvements.


Notable Experience

Worked on Tableau API integrations

Has led multiple scrum teams



Senior Automation Engineer
Endava (May 2016 - Present)
Project: Tableau
Application development and development of connectors from third party API's, to prepare big data to be processed by Tableau desktop and other resources

  • Used JavaScript ES6 + React + Redux
  • Manages creation and maintenance of automation testing framework 
  • Led the scrum team in Agile methodology
  • Responsible for setting the team's objectives together with the PM and defining the metrics related to them
  • Influenced the team to meet objectives; negotiating processes, metrics, and objectives with the customers' teams
  • Technologies used: ReactJS, Redux, ES6, NodeJS, Travis CI

Team Lead & Senior Automation Engineer
ThinkerSys (June 2017 - October 2017)
A short-term contract for a US company

  • Created an automated framework from scratch - both frontend and backend 
  • Led other developers working on frontend and backend 
  • Web Development maintenance using JavaScript ES6 + React
  • NodeJS server maintenance
  • Led the creation from scratch of an Automated Framework using Python
  • The project used Agile Methodology (SCRUM) - English language
  • Technologies Used: ReactJS, Redux, ES6, NodeJS, Python

Senior Full Stack Developer
BairesDev (2014- 2015)

  • HTML5 / CSS3 / Javascript / Angular front end development
  • Released new products for the company
  • Reviewed /maintained current products
  • GUI redesign
  • The project used Agile Methodology (SCRUM) - English language
  • Technologies Used: ES5, AngularJS, HTML5, CSS3

Full Stack Developer
SparkRadius (2013 - 2014)

  • Frontend development of a social web site, for clients in the USA and Spain
  • JavaScript ES5
  • Jquery framework and XHTML.
  • Unit testing and integration tests
  • The project used Agile Methodology (SCRUM) - English language
  • Technologies used: ES5, jQuery, HTML5, CSS3

Senior Automation Engineer
Velocity Partners (2012 - 2013)

  • Managed creation and maintenance of automation testing framework
  • Automation testing: Ruby + Capybara + Cucumber
  • Page Object Model pattern: SitePrism
  • Continuous Integration: Bamboo (Atlassian)
  • JIRA - Agile Methodology (SCRUM)
  • Technologies used: Ruby, Capybara, Cucumber, Bamboo

Automation Engineer
Neoris (2009 - 2012)

  • Role: QA Lead
  • Designed, wrote and executed test cases
  • Bug reporting and bug tracking
  • Test Cases Documentation
  • Regression testing
  • Automation testing (Selenium + C#, Ruby, Cucumber + Ruby)
  • Exploratory testing
  • Validation of test results using SQL database querying
  • Agile Methodology (Scrum)
  • Technologies used: C#, Selenium, Cucumber, Ruby


Universidad Abierta Interamericana
Systems Engineering (2010 - 2015)


JavaScript: ES5 – ES6, React, Redux, Node.js, SQL, Ruby, Python - Automation, Cucumber, Web-Driver, Capybara, Protractor