Sergey Daub - Frontend Developer at Loya.Care

Sergey Daub

Frontend Developer at Loya.Care

Hamburg, Germany

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Summary

👤

Senior

🎓

Top School

Sergey Daub is a seasoned Frontend Developer with 20+ years in software development and over four years of deep specialization in React, Next.js and modern TypeScript ecosystems, now based in Hamburg. He builds fast, stable, and scalable user-facing applications with a focus on performance optimization, clean architecture, and maintainable UI systems, having improved an ad player’s performance by 30–80% and lifted NPS by 18%. Comfortable across SSR/SSG, advanced testing (Jest, Cypress, Playwright) and CI/CD automation, Sergey also brought fullstack capabilities to recent roles—designing Node.js/Express APIs and PostgreSQL schemas with Prisma. He applies Feature-Sliced Design and design-system thinking to reduce maintenance burden and delivery risk, cutting deployments from hours to minutes and production incidents substantially. An active contributor to the high-profile AMP project, he solved real-world ad integration and CORS challenges, showing an ability to debug complex third-party integrations at scale. Open to senior frontend roles (remote, hybrid, or relocation), he blends deep frontend craft with pragmatic backend experience.

11 years of coding experience

17 years of employment as a software developer

Master of Engineering - MEng, Master of Engineering - MEng at Samara State Aerospace University

English, Russian, German

Github Skills (13)

html10

ampl10

amp-html10

intergration10

javascript10

front-end-development10

google-amp10

ads10

integrations10

advertising10

ati10

cors9

css4

Programming languages (2)

JavaScriptHTML

Github contributions (5)

ampproject/amphtml

Feb 2018 - Mar 2021

The AMP web component framework.

Role in this project:

Front-end Developer

Contributions:6 commits, 13 PRs, 31 comments in 3 years 1 month

Contributions summary:Sergey primarily worked on integrating and debugging a third-party advertising component called "videonow" within the AMP framework. Their contributions include adding "videonow" to the integration and example files, fixing CORS issues, and updating the code to accommodate AMP's requirements. The user also added the ability to debug the "videonow" component.

web-componentscomponent-frameworkframeworkwebcomponentsweb-component

sdbaron/dictionary-chrome-plugin

Mar 2017 - May 2022

Contributions:12 PRs, 103 pushes, 13 branches in 5 years 3 months

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