Taís Massaro
Berlin, Germany
Frontend engineer who enjoys the challenge of legacy systems
github.com/taismassaroWork experience
Doctolib (Apr 2024 – current)
Software Engineer
- Modernizing legacy React/Rails codebase for doctor appointment calendar (JS→TS migration, type system consolidation, modern patterns)
- Leading frontend extraction from large Rails monolith into standalone packages; backend extraction into Rails engines
- Expanding into Kotlin/Spring Boot stack for new data streaming initiative (Kafka, RisingWave)
AMBOSS (Nov 2022 – Jan 2024)
Software Engineer
- Technical research for the rewrite of a 10-year-old legacy PHP content management system into a new React-based one, evaluating rich text libraries (Tiptap, ProseMirror, Lexical) and CMS frameworks in close collaboration with design and medical editors
- Collaborated with Design System team increase component adoption and improve UX consistency across main codebase
- Collaborated with Developer Experience team on modernization initiatives (removing enzyme, recompose and outdated React patterns)
Klarna (Oct 2020 – Oct 2022)
Engineer L2 (May 2022 – Oct 2022)
- Led technical scoping, planning and implementation of Klarna's B2B Portal redesign
Engineer L1 (Oct 2020 – Apr 2022)
- Built reusable component framework and GraphQL backend-for-frontend for merchant settings pages, enabling teams to add settings consistently across B2B portal
- Led the frontend implementation of a 4-eye review approval system for internal support tools, requiring two-person approval for critical changes to prevent incidents by allowing errors to be caught early
- Introduced pair programming practices across the team
Evermood GmbH (Nov 2019 – Sep 2020)
Software Developer
- Built MVP for employee mental health app using React Native, Expo, Typescript and Rails, working closely with CTO in 3-person dev team
- Contributed to product decisions and participated in technical hiring as part of small startup team (10 people)
GetYourGuide (Apr 2019 – Oct 2019)
Brazilian Portuguese freelance translator
Vetro Editions (Aug 2017 – Mar 2019)
Project manager and graphic designer for independent book publisher
Hospitality and Travel (Dec 2014 – Aug 2018)
- Soho House Berlin (2017-2018)
- Work in exchange for accomodation – Italy (2016-2017)
- Resort at Squaw Creek – USA Work&Travel (2014-2015)