Marces Engel
Lead Backend Engineer at Peter Park
Germany
Summary
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SeniorMarces Engel is a founder and full‑stack JS/TS engineer with nine years of experience building scalable SaaS platforms and developer-facing tooling from Germany. He founded QA365 to deliver agency‑free, AI-augmented QA that semantically indexes web apps and uses static analysis to generate exhaustive, cross‑browser test suites integrated with Jira and Linear. Previously he led engineering and product delivery as CTO at CASHY, scaling distributed teams and a Node/TypeScript/Next.js serverless stack on AWS while improving engineering processes. A hands‑on contributor to open source—he modernized React Intl components to the Context API—Marces combines technical depth in React, GraphQL, AWS and databases with a strong focus on shipping reliable systems and operationalizing QA across the full release lifecycle.
9 years of coding experience
6 years of employment as a software developer
Github Skills (6)
javascript10
context-api10
react10
i18next9
internationalization9
localization9
Programming languages (14)
Github contributions (5)
formatjs/formatjs
May 2018 - Apr 2019
The monorepo home to all of the FormatJS related libraries, most notably react-intl.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:73 commits, 5 PRs, 208 comments in 11 months
Contributions summary:Marces primarily focused on updating the project's React components to utilize the new Context API. This involved refactoring existing components like `IntlProvider`, and various formatted components such as `FormattedDate`, `FormattedMessage`, and `FormattedNumber`. The changes reflect a shift towards the new Context API to improve the performance and maintainability of the React Intl library. Additionally, the user introduced an HOC (Higher-Order Component) to inject intl from context into component properties.
formatjsmonoreporeact-intljavascriptreact
marcesengel/mongo-lazy-schema
Jan 2020 - Nov 2021
Contributions:12 PRs, 20 pushes, 1 branch in 1 year 10 months
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