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I'm a product-minded Senior Frontend Engineer with over 6 years of commercial experience building production-grade web interfaces, design systems, real-time data layers, and complex architectures for remote B2B teams. I translate high-fidelity design into interactive, accessible features and deliver polished user experiences across web and mobile platforms. I have a proven track record shipping high-security applications, embedded widgets, and cross-platform mobile apps. I graduated Magna Cum Laude in Business Administration, bridging clean technical infrastructure with business growth metrics like conversion, retention, and customer success. I thrive at the intersection of product strategy and engineering, routinely aligning technical decisions with measurable outcomes and customer value.…I'm a product-minded Senior Frontend Engineer with over 6 years of commercial experience building production-grade web interfaces, design systems, real-time data layers, and complex architectures for remote B2B teams. I translate high-fidelity design into interactive, accessible features and deliver polished user experiences across web and mobile platforms. I have a proven track record shipping high-security applications, embedded widgets, and cross-platform mobile apps. I graduated Magna Cum Laude in Business Administration, bridging clean technical infrastructure with business growth metrics like conversion, retention, and customer success. I thrive at the intersection of product strategy and engineering, routinely aligning technical decisions with measurable outcomes and customer value.

Sergio Cortes Satizabal

Front-End Developer, App Developer, Web Developer, +4

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I'm a product-minded Senior Frontend Engineer with over 6 years of commercial experience building production-grade web interfaces, design systems, real-time data layers, and complex architectures for remote B2B teams. I translate high-fidelity design into interactive, accessible features and deliver polished user experiences across web and mobile platforms. I have a proven track record shipping high-security applications, embedded widgets, and cross-platform mobile apps. I graduated Magna Cum Laude in Business Administration, bridging clean technical infrastructure with business growth metrics like conversion, retention, and customer success. I thrive at the intersection of product strategy and engineering, routinely aligning technical decisions with measurable outcomes and customer value.…I'm a product-minded Senior Frontend Engineer with over 6 years of commercial experience building production-grade web interfaces, design systems, real-time data layers, and complex architectures for remote B2B teams. I translate high-fidelity design into interactive, accessible features and deliver polished user experiences across web and mobile platforms. I have a proven track record shipping high-security applications, embedded widgets, and cross-platform mobile apps. I graduated Magna Cum Laude in Business Administration, bridging clean technical infrastructure with business growth metrics like conversion, retention, and customer success. I thrive at the intersection of product strategy and engineering, routinely aligning technical decisions with measurable outcomes and customer value.

Available to hire

I’m a product-minded Senior Frontend Engineer with over 6 years of commercial experience building production-grade web interfaces, design systems, real-time data layers, and complex architectures for remote B2B teams. I translate high-fidelity design into interactive, accessible features and deliver polished user experiences across web and mobile platforms. I have a proven track record shipping high-security applications, embedded widgets, and cross-platform mobile apps.
I graduated Magna Cum Laude in Business Administration, bridging clean technical infrastructure with business growth metrics like conversion, retention, and customer success. I thrive at the intersection of product strategy and engineering, routinely aligning technical decisions with measurable outcomes and customer value.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Spanish; Castilian

Fluent

English

Fluent

Portuguese

Advanced

Work Experience

Senior Frontend Engineer at HoudiniSwap

March 1, 2025 - Present

Engineered a production Manifest V3 Chrome extension featuring JWT-secured authentication within a standalone repository. Integrated cross-chain wallet connectivity across EVM, Solana, Bitcoin, Tron, Sui, and TON using Reown AppKit. Implemented zero-latency live token quoting and order-tracking pipelines via GraphQL Subscriptions to power the core swap engine. Co-developed end-to-end payment link flows with backend teams and built frontend layers for token staking protocols leveraging wagmi. Translated Figma specs into interactive code with Framer Motion micro-interactions, dark/light themes, and global i18n localization. Led refactoring of a legacy monolith into a modern feature-based architecture and built an interactive widget playground for internal testing and third-party integrations.

Frontend Engineer at Unizen

September 1, 2023 - March 1, 2025

Architected a ground-up redesign of the corporate landing page using Tailwind CSS and Framer Motion, optimizing web performance, data-fetching layers, and responsive layouts. Co-developed the initial cross-platform Android mobile app with React Native and restructured web repos into a unified monorepo. Implemented frontend engineering best practices to optimize the platform analytics engine and resolved multi-wallet connection bugs. Aligned technical execution with product strategy by driving layout decisions in Figma and translating complex Web3 flows into intuitive client components.

Frontend Developer at Tata Consultancy Services (Contracted to Tryg)

November 1, 2021 - September 1, 2023

Co-developed a consumer-facing digital insurance platform scaled across 10+ enterprise subsidiaries, contributing to improved customer acquisition metrics. Built responsive dashboard widgets and reusable components using Material UI and Styled Components to enforce design tokens. Implemented comprehensive testing with Jest and React Testing Library to reduce production regressions and strengthen deployment reliability.

Mentor at Microverse

January 1, 2021 - June 1, 2021

Mentored international junior developers on remote software engineering workflows, conducted PR reviews, and enforced coding practices (Git Flow, TDD, OOP, SOLID). Spent 8+ hours daily building 20+ real-world projects to master advanced data structures, algorithms, and full-stack architectures (React/Redux, JavaScript ES6, Ruby on Rails, SQL).

Frontend Engineer at Independent

January 1, 2021 - November 1, 2021

Engineered responsive web applications, interactive data-dense dashboards, and customer-focused landing pages with React.js and TypeScript. Designed and deployed scalable RESTful APIs to process, map, and render dynamic datasets on client interfaces. Produced interactive wireframes and prototypes to elevate design quality and user engagement.

Frontend Engineer at Xapo

January 1, 2019 - December 31, 2019

Developed the 'Magic-auto-savings' feature for the Xapo app during the 2019 Xapo Hackathon; later implemented in-app and helped boost user experience, increasing USA account holders' app usage by 5%.