Marco Sanabria, Developer in Cartago, Costa Rica

Marco Sanabria

QA Automation Developer

Cartago, Costa Rica
Toptal Member Since
December 15, 2021

Marco is a passionate SDET who always looks for solutions that automate manual processes in the development lifecycle. With over a decade of experience, he worked on several projects performing as a QA automation engineer, tech lead, and coach. Marco conducted testing in several layers of modern web applications, including UI, API, and performance. He has also been part of lead teams developing QA strategies from the ground up.

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API Testing, Amazon S3 (AWS S3), Cypress, CI/CD Pipelines, GitHub Actions...
Growth Acceleration Partners
QA Leadership, API Testing, REST API Automation, UI Automation, SDET, Cypress...


API Testing - 10 yearsREST API Automation - 10 yearsUI Automation - 10 yearsCI/CD Pipelines - 6 yearsJavaScript - 6 yearsQA Leadership - 4 yearsPython - 4 yearsCypress - 3 years


Cartago, Costa Rica



Preferred Environment

JavaScript, Python, Java, QA Testing, CI/CD Pipelines, QA Leadership, Performance, UI Automation, API Testing, REST API Automation, Ruby

The most amazing...

...project I've worked on as a lead SDET and coach to several team members is a cyber security threat detection system.

Work Experience

2022 - 2022

QA Automation Engineer
  • Developed a QA Process from scratch and translated this process to Jira by drawing specific workflow for US Stories, Tasks, Bugs, and dashboards for these workflows.
  • Designed and implemented a UI Test Automation framework using
  • Created and implemented an API Test Automation framework using
  • Integrated the QA Automaton frameworks in CICD pipelines using Github Actions. These pipelines would allow developers to merge new code to the codebase only if tests would pass.
  • Merged the QA Automation frameworks and the CICD pipelines with Cypress Dashboard service.
Technologies: API Testing, Amazon S3 (AWS S3), Cypress, CI/CD Pipelines, GitHub Actions, React, Web3.js, Docker
2011 - 2021

Staff Quality Assurance (QA) Engineer | Automation Engineer

Growth Acceleration Partners
  • Implemented QA strategies and processes from scratch for several clients. They included everything from manual testing to automated CI/CD pipeline tests and synchronizing test results to an AWS S3 bucket.
  • Automated hundreds of different tests for API, UI, and performance using various tools like, Capybara, Selenium, pytest, Protractor, Sauce Labs, etc. Included these automated tests in CI/CD pipelines.
  • Designed and implemented several coding solutions to automate most of the manual processes during a prod release testing cycle, resulting in speeding up the testing process.
  • Participated in the organization of our technical manual QA and QA automation boot camps. Taught courses on best practices in QA automation, API testing,, and CI/CD as a trainer.
  • Worked as a personnel manager and oversaw several people. Coached and mentored them to help them grow and develop their careers in the company.
  • Participated in designing and implementing strategies to speed up the recruiting process and hire the right talent for the company as part of the company's interview core team. Collaborated with the staffing team.
  • Proposed redesigning the existing automation framework architecture by implementing best automation practices and design patterns, such as a page object model (POM). Trained the QA team members as well.
  • Held workshops on integrating an automation framework with services such as Sauce Labs. Gave short talks about Git and CSS.
  • Proposed a new GitFlow process to simplify merging feature branches and facilitate dealing with conflicts. Enabled parallelism in automation so that all test cases get executed in parallel.
  • Configured Selenium Grid to allow cross-browser and cross-platform testing. Integrated Jira and Zephyr for Jira with the automation process.
Technologies: QA Leadership, REST API Automation, API Testing, UI Automation, SDET, Cypress, JavaScript, Java 8, Ruby, Python, Jira, Jira REST API, CI/CD Pipelines, Docker, GitHub, Jenkins, GraphQL, MySQL, Ruby on Rails (RoR), Protractor, Selenium Grid, Selenium, GitLab CI/CD, Git, Amazon S3 (AWS S3), HTML, Java, QA Testing, QA Automation, Pytest, Capybara, RSpec, TypeScript, Page Object Model (POM), MacOS, Linux, Windows, Object-oriented Programming (OOP), Postman, PostgreSQL, Sauce Labs, Vim Text Editor, Bash Script, Python 3, K6, Robot Framework, Cucumber, Nightwatch.js, Vagrant, Zephyr, TestNG, Apache Maven, PHP, Laravel, Newman, Node.js, REST APIs, Test Automation


Cybersecurity Threat Detection App

As a software development engineer in test (SDET), I automated hundreds of tests in several layers such as UI and API. I also designed and implemented frameworks from scratch using Protractor and The team needed additional training in JavaScript and different frameworks, so I prepared and provided training sessions covering JavaScript, TypeScript, promises, arrow functions, design patterns, etc. In addition, I included frameworks in the CI/CD pipelines using GitLab CI and Docker. Also, I created a Node.js package to interact with a Zephyr Scale's API and report results from GitLab CI to Zephyr.

Trainer in QA Boot Camps and Workshops
I participated in the organization and contributed to a couple of QA boot camps in manual technical quality assurance (QA) and QA automation as a trainer focusing on teaching JavaScript. The lectures included, among other topics, discussions on JavaScript basics, callbacks, arrays, and promises. Additionally, my co-worker and I also gave a talk about CI/CD in Spanish.

Healthcare Software Application

This healthcare software is a medical system that interacts with medical care providers, specialists, and patients through a referral and electronic consultation form. It facilitates and makes patients' consultations better and faster, even if they are from remote places.

I rebuilt the client's trust in us by defining a new QA process and including a new GitFlow that helped us provide faster and more reliable results. This new process helped foster better communication between the QA and development teams and a move to a better CI/CD environment. The pipeline was initiated in Jenkins and finished in Jira with charts showing test results. This facilitated the product owner's decision-making process.

In addition, as a QA automation lead, I coached the other QA automation engineers in the team to help them improve their skills. The client ended up being more than satisfied with the work done.

QA Automation for Car Dealerships

Automotive dealerships use a customer relationship management (CRM) process to keep track of every transaction made by clients and employees. This app handles many tasks, from contacts and calendar events to complex dashboards showing processed sales data and creating dynamic graphs.

I was part of the core team that designed and implemented the automation framework using Capybara with RSpec as the app was written using Ruby on Rails, which provided a better and easier integration. Then the client wanted to have cross-browser coverage, so I contributed to an investigation which led us to propose Sauce Labs services. Finally, I worked on integrating such a service with our automation framework.

As a result, the client decided to grow our team and I became a coach to the new team members on the project and in the process.

QA Automation for SIEM

Security information and event management (SIEM) is a software solution dedicated to monitoring devices, networks, and organizations. I contributed to creating a new automation framework from scratch using JavaScript and Nightwatch.js. I proposed and helped implement the framework's infrastructure using known design patterns such as page objects and bot style tests.

Blockchain Nft Game App
Thanks to Blockchain and NFT technology, you own little creatures (Zeedles/NFTs). Where you can grow, evolve, and customize them as you wish, increasing their value dramatically. Then you can sell it and start all over again, or keep it forever and collect even more.



JavaScript, Python, Java, Ruby, HTML, GraphQL, TypeScript, Bash Script, Python 3, Java 8, PHP


Selenium, Cypress, Capybara, Protractor, Ruby on Rails (RoR), Robot Framework, TestNG, Laravel


Git, Postman, Pytest, RSpec, GitLab CI/CD, GitHub, Jira, Jenkins, Vim Text Editor, Cucumber, Vagrant, Zephyr, Apache Maven


Page Object Model (POM), Test Automation, Object-oriented Programming (OOP)


QA Testing, UI Automation, API Testing, Quality Assurance (QA), QA Automation, REST API Automation, CI/CD Pipelines, QA Leadership, SDET, Sauce Labs, Performance, K6, GitHub Actions


Jira REST API, Selenium Grid, REST APIs, Nightwatch.js, Newman, Node.js, React, Web3.js


Docker, MacOS, Linux, Windows


MySQL, PostgreSQL, Amazon S3 (AWS S3)


2008 - 2014

Bachelor's Degree in Computer Engineering

Fidélitas University - San José, Costa Rica



Advanced Level Test Automation Engineer



Certified Tester Foundation Level