Francisco Serio
@franciscoserio
Frontend engineer specializing in React and TypeScript, focused on performance and scalability.
GermanyWhat I'm looking for
I am a Frontend Engineer with 5+ years building and scaling complex web applications using JavaScript and TypeScript, with deep expertise in React and modern frontend architecture.
I have led integrations, improved testing coverage with Cypress, optimized search and advertising integrations to reduce marketing costs, and refactored legacy PHP services into high-performance React SPAs that increased upsell opportunities and development efficiency.
I thrive in fast-paced, data-driven environments where ownership matters, collaborating closely with design and product teams to deliver maintainable, performant, and user-focused solutions.
Experience
Work history, roles, and key accomplishments
Front-End Engineer
apo.com Group
Feb 2025 - Present (1 year 4 months)
Led integration of Maileon across nine domains, improved Cypress test coverage for third-party integrations, and optimized React Algolia search to reduce marketing expenses by 13%. Documented API integrations in Confluence to streamline cross-team development.
Front-End Developer
MyPostcard.com
Nov 2020 - Jan 2025 (4 years 2 months)
Refactored a multi-page PHP service into a high-performance React SPA, created reusable components and improved purchase workflow to increase upsell opportunities by 20%. Reduced development time through component reuse and collaborated across design and backend teams.
Pre-commissioning Engineer
AESA-YPF
May 2015 - Feb 2020 (4 years 9 months)
Coordinated Instrumentation & Control activities for pre-commissioning with a 10-engineer team and developed an Excel method to quantify daily production, enabling material purchases four months earlier to meet project schedule.
Education
Degrees, certifications, and relevant coursework
Universidad Nacional de Mar del Plata
Bachelor of Engineering, Electronics Engineering
2009 - 2014
Completed a five-year Electronics Engineering degree program focused on electronics and related engineering disciplines.
Availability
Location
GermanyAuthorized to work in
Job categories
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