andrea.perinu@gmail.com

Work experience

Senior Frontend Engineer, Freelance

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Working with multiple international clients across fintech, Web3, and SaaS sectors, typically as the senior frontend voice on teams without in-house frontend leadership
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Led complete frontend rewrite for KAIO (formerly Libre Capital), a Web3 platform for institutional tokenized funds partnered with BlackRock and Brevan Howard, rebuilding the entire codebase and designing a shared design system from scratch
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Worked on the web estate of Moneyfarm, a European digital wealth-management platform, improving the main marketing site and the client-facing web app: performance and rendering work, UI consistency across surfaces, and incremental modernisation inside a live, regulated product
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Collaborated with Team Blue on an ambitious integration project: designed and built a lightweight injectable plugin acting as connective tissue across 60+ SaaS platforms, enabling seamless cross-site communication and shared state where previously each system operated in isolation
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Run an agent-assisted delivery workflow (Claude Code) across client projects to compress refactors, test scaffolding and migration groundwork, while keeping architecture and review decisions in human hands
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Provide architecture reviews, stack decisions and frontend best practices that clients adopt as their internal standard
Technologies used: TypeScript • React • Next.js • Playwright • Cypress

Frontend Technical Lead @ Deliveristo

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Led frontend architecture for a B2B SaaS platform serving the Italian food distribution market
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Managed full migration from Vue.js to React + Next.js with server-side components, reducing page load time from 3.5s to 150ms (95% improvement), significantly boosting user retention
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Introduced modern testing strategy, increasing test coverage from 0% to 90%
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Rebuilt mobile application in Flutter, eliminating 95% of legacy bugs
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Led a frontend team of 4: ran code reviews, mentored junior engineers and defined the frontend standards the team adopted
Technologies used: TypeScript • React • Next.js • GraphQL • React Native • Flutter

Senior Frontend Engineer @ tal&dev

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Migrated an entire production codebase from JavaScript to TypeScript with a functional programming approach, removing a long tail of runtime type errors
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Improved application performance by 70% on a production SaaS platform
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Reduced load times by 2.5s through architecture-level optimisation rather than micro-tuning
Technologies used: TypeScript • React • Next.js • GraphQL • PostCSS

Senior Frontend Engineer @ BEE by MailUp Group

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Led an application rewrite around fp-ts, moving effectful code behind IO and TaskEither so core logic became pure and testable without mocks
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Raised test coverage to 97% and established functional programming principles across the codebase
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Built a custom state management solution that improved rendering performance by 60%
Technologies used: TypeScript • React • fp-ts • Styled Components

Senior Frontend Engineer @ MC Engineering (Deltatre)

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Designed and built UI for high-traffic live platforms serving millions of concurrent users during UEFA, FIFA World Cup, Olympic Games and NFL events
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Created a reusable React widget system deployed across multiple Olympic Games websites
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Worked with international broadcasters including NHK (Japan) on localised live streaming experiences
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Implemented video advertising and analytics systems at scale
Technologies used: React • JavaScript