Sebastian Cherny
Development
Madrid, Spain
Skills
Python
Django
JavaScript
PostgreSQL
Heroku
JSON
REST
HTML
CSS
TypeScript
mySQL
AWS (Amazon Web Services)
C++
Linux
Jest
PHP
Golang (Go)
Docker
Jenkins
Bitbucket
Selenium
Start-ups
Scrum
Scrum Methodology
Agile
About
Sebastian is a versatile full-stack software engineer with over 8 years of experience developing robust, scalable applications using Python, JavaScript, Django, React, and PostgreSQL. With a strong foundation in mathematics and a passion for problem-solving, Sebastian brings deep analytical skills and technical expertise to every project he tackles. He has worked with high-impact teams including Facebook (Meta) and MercadoLibre, delivering full-stack solutions using modern frameworks, CI/CD pipelines (Docker, Jenkins), and cloud platforms like Heroku, Render, and AWS. Also, he has successfully led freelance projects from end to end, leveraging React, Django, and PostgreSQL for rapid delivery of client-facing applications. Sebastian is also experienced in teaching, having served as an IB Math teacher, and has competed in international programming and physics Olympiads. Known for his curiosity, communication skills, and dedication to continuous learning, he thrives in dynamic, intellectually challenging environments.
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Acomplishments
Revamped Facebook's interface for identity documentation uploads, resulting in a remarkable 30% increase in the success rate among 2000 daily users. Simultaneously, the error rate saw a significant reduction of 20%, enhancing the overall user experience.
Developed a platform from scratch, enabling seamless collaboration for 400 users in sharing and updating Google Drive spreadsheets. The platform facilitated efficient data entry processes, ultimately syncing with and enhancing the MySQL database.
Work Experience
Senior Fullstack Software Engineer
Toptal
September 2022 - Present
- Remote working as an independent freelancer in different fullstack projects for different clients, generally using React, Python, Django and Postgres sql, publishing projects in Heroku and Render. Docker for CI/CD.
- Crafted websites from the ground up for different client projects, typically featuring user dashboards enriched with dynamic charts and data visualizations for an engaging user experience.
Software Engineer
Brightsector for MercadoLibre
October 2016 - September 2022
- Creation and maintenance of internal-use websites, empowering users to effortlessly generate, edit, share reports, and mark them as completed, triggering automatic updates in the database. Implementation of daily automated checks to identify errors in the database, complemented by server log analysis for fault detection.
- Code maintenance and creation of frontends (Django).
- Use of Python, Icinga web and Linux server to create tests for mercadolibre's API to check new code deployed CI/CD methodology with Jenkins and Bitbucket pipelines.
IB Math Teacher
Northlands School
May 2020 - July 2022
- Maths Teacher (IB Diploma Program) to high school students ages 16, 17, 18.
- Maths and Physics private tutor since 2014.
Software Engineer Intern
Facebook Inc
July 2021 - October 2021
- Working full-stack using Hack/PHP, React and GraphQL.
- Moved system for Identity Verification for running Political Ads in Brazil from deprecated system to new one in Comet.
- Launched without issues, getting 2000 exposures per day.
Software Engineer Intern
Facebook Inc
January 2020 - March 2020
- Working full-stack using Hack/PHP and React.
- Improved the experience of selling products through any Facebook product (Instagram, Marketplace, etc.).
Software Engineer
Brightsector
February 2014 - August 2015
- Use of Javascript, Python, Java, HTML in Linux system.
- Creation of web scrappers in Python .
- Use of Selenium to check inbox capacity in Gmail.
Education
