Thiago Saraiva Mobile & Frontend Engineer / Backend Apprentice | React Native &

Senior Fullstack Software Engineer

Squarespace

Dec 2024 - Nov 2025 (1 year)

Challenge: Modernized Squarespace’s main platform, the leading website building and hosting service for millions of users globally. Focused on reducing technical debt, optimizing platform performance, and delivering scalable frontend features that enhanced user experience for small businesses, creatives, and enterprises. - Developed scalable UI components, ensuring design consistency and better user experience. - Modernized main platform, refactoring ~30% of legacy code to reduce technical debt. - Collaborated with international teams using Scrum, defining standards and best practices.

Senior Fullstack Software Engineer

Dec 2023 - Dec 2024 (1 year 1 month)

Challenge: Contributed to the evolution of Pinterest Business, a platform with over 500 million monthly users. Focused on building new features for advertisers and content creators, improving scalability, and modernizing legacy code to enhance performance and drive business growth. - Expanded 21% of platform components and implemented new features for Pinterest Business. - Optimized performance, achieving +12% speed improvement; refactored legacy code. - Refactored legacy code, reducing technical debt and increasing maintainability. - Collaborated with global teams in an agile environment, ensuring consistent delivery under high traffic.

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Frontend Software Engineer

Hospital Israelita Albert Einstein,

Oct 2021 - Dec 2023 (2 years 3 months)

Challenge: Developed healthcare applications for Brazil’s largest private hospital, ranked among the Top 30 worldwide by Newsweek. Delivered secure, scalable, and interoperable digital solutions for doctors, administrative staff, and data management teams, improving operational efficiency and patient care. - Built a unified medical platform enabling dataset creation, study visualization, and collaboration. - Contributed to 20% of AI data pipeline for machine learning diagnostics. - Integrated medical software and devices, ensuring interoperability and secure data management.

Mobile Engineer

aesthetics, and Cheesecake Labs

Aug 2020 - Sep 2021 (1 year 2 months)

Challenge: Developed high-quality mobile solutions for international clients at Cheesecake Labs, recognized as one of the world’s top 10 mobile app development companies by Clutch. Focused on delivering performant, scalable, and user-friendly applications while ensuring on-time delivery for diverse industries, from startups to established global brands. - Migrated 100% of legacy AngularJS app to React, improving performance and code quality. - Developed scalable mobile components and established company-wide development standards. - Delivered projects consistently on time, increasing delivery speed by 15% while staying within budget.

Mobile Engineer

Accenture Brasil

Jun 2018 - Jul 2020 (2 years 2 months)

Challenge: Developed Riachuelo’s digital banking platform at Accenture Concrete, a leading technology consultancy. Delivered full functionality, ensured top-level security, and maintained high test coverage within a cloud-based agile environment, providing scalable and reliable solutions for thousands of retail banking users. - Built Riachuelo Midway digital banking platform from scratch (100% of core features developed). - Implemented mobile banking functionalities with 90% test coverage. - Integrated banking APIs, payment processors, and financial institutions for real-time transactions.

Frontend & Mobile Developer

labsit

Mar 2017 - May 2018 (1 year 3 months)

Challenge: Developed tailored digital products and platforms for corporate clients across finance, retail, and healthcare sectors. Focused on delivering high-performance, scalable, and maintainable solutions that met client requirements and enhanced user experience. - Delivered multiple client projects simultaneously with ~10-engineer teams. - Optimized frontend performance, reducing page load times by 30% and improving user experience. - Led mobile and frontend architecture decisions, code quality standards, and knowledge sharing.

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Frontend & Mobile Developer

Brasilseg

Jan 2015 - Mar 2017 (2 years 3 months)

Challenge: Developed and modernized software for Banco do Brasil’s Brasilseg project, a corporate insurance platform. Focused on improving operational efficiency, adopting modern technologies, and ensuring compliance with complex financial regulations, delivering reliable and scalable solutions for enterprise clients. - Built a React-based frontend for the Banco do Brasil insurance system, increasing platform efficiency by 25%. - Contributed to one of the first React implementations in a Brazilian corporate bank. - Gained expertise in financial workflows, regulatory compliance, and best practices.

Thiago Saraiva

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