Isabel Costa is a backend-focused software engineer with 11 years’ experience building production systems across mobile, full-stack and backend roles, currently at Deliveroo in London. Trained in telecommunications and distributed systems (BSc/MSc from Instituto Superior Técnico), she began in Android before transitioning to backend engineering and large-scale web services. An active open-source contributor and AnitaB.org admin, she’s a two-time GitHub Star (2021–2022) and a former Google Summer of Code participant who has refactored and improved mentorship platform backends and Android clients. Passionate about widening participation in tech, she mentors and instructs with As Raparigas do Código and Black CodHer Bootcamp, combining hands-on engineering with community leadership. Notably, her contributions often focus on code quality and maintainability—fixing linting/Codacy issues and improving auth and profile flows in community projects.
11 years of coding experience
6 years of employment as a software developer
Bachelor in Telecommunications and Informatics Engineering, Bachelor in Telecommunications and Informatics Engineering at Instituto Superior Técnico
Mentorship System is an application that matches women in tech to mentor each other, on career development, through 1:1 relations during a certain period of time. This is the Android application of this project.
Role in this project:
Mobile Developer (Android)
Contributions:156 reviews, 42 commits, 283 PRs in 2 years 8 months
Contributions summary:Isabel primarily contributed to the development of the Android application for a mentorship system. Their commits focused on implementing key features such as user registration, login, and the main activity, encompassing the creation of UI elements, view models, and related backend interactions. They also worked on features such as member profiles, relation details and sending requests within the application. Furthermore, they have also contributed to the user interface and added the feature to send request in the app.
Mentorship System is an application that matches women in tech to mentor each other, on career development, through 1:1 relations during a certain period of time. This is the backend of this system.
Role in this project:
Back-end Developer
Contributions:312 reviews, 82 commits, 419 PRs in 3 years 4 months
Contributions summary:Isabel primarily focused on refactoring and addressing code style issues within the backend system. Their contributions involved fixing Codacy warnings, indicating an effort to improve code quality and maintainability. The changes were centered around the `user.py` file, specifically addressing the user registration, login and profile functionalities as part of the overall mentorship application. These changes likely improved the backend's performance and adherence to coding standards.
pythonflaskflask-restxmarshmallowopenapi
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Isabel Costa - Software Engineer at As Raparigas do Código