Hi — I'm

Mohamed Yahia

Full-Stack Developer

Full-stack developer working in TypeScript, React and Node.js. I spent 15 months inside GrapesJS, the 26k-star open-source editor, rewriting its drag and drop engine and building the data binding its paid SDK runs on.

Get in touchsalemmohamed780@gmail.comDownload CV GitHub LinkedIn

Experience

6 roles

UX Pilot · Senior JS Developer
Jun 2025 — 2026
New York, USA (Remote) | Contract
- Built the front-end editor for UX Pilot, an AI interface design tool at $5.3M ARR.
- Added selection-scoped editing, so a user can highlight part of a generated design and describe the change in words. The model rewrites only that region.
- Extended the generation model's output to synced HTML components, so a generated screen arrives as editable elements rather than a flat export.
Habitat AI Inc. · Contract Engineer
Dec 2025 — Apr 2026
New York, USA (Remote) | Contract
- Built myself a tool that automated the labelling through LLM API calls, instead of working through the datasets by hand.
- Annotated labelled datasets directly for the annotation pipeline.
GrapesJS · Full Stack Engineer
Aug 2024 — Nov 2025
California, USA (Remote) | Full-time
- Merged 55 pull requests into the open-source editor framework, which has 26k stars and is the base for the commercial product.
- Rewrote the drag and drop sorter, replacing a single file with a node tree and a separate drop-location resolver across 26 files.
- Added data binding to the framework over 19 PRs, then built the same feature for the paid SDK and the B2C editor and co-wrote its reference documentation.
- Shipped template import for Mustache, EJS, Handlebars, Nunjucks and Liquid, letting teams bring existing templates into the editor.
- Built global styles in the SDK with a teammate, where one change propagates to every page in a project.
Documentation I wrote:SDK data sources →SDK global styles →
Rebuilding drag and dropThe sorter was one file that most people avoided touching. I pulled it apart into a proper node tree with a separate drop-location resolver, then spent the next year fixing what the rewrite surfaced in Firefox and in the layer manager.17 PRs+3,373 / -1,954Sep 2024 – Sep 2025— show all— hide
1. #6149 Refactor sorter
  Split a single Sorter file into a node tree, a drop-location resolver and a placeholder renderer across 26 files. Everything below this line is a consequence of it.
  Sep 2024+2,278 / -1,46226 filesdiff →
2. #6184 Add Canvas Component Dragging API
  Public API so host apps can drive dragging themselves rather than faking mouse events.
  Oct 2024+184 / -5011 filesdiff →
3. #6187 Fix sorter performance
  The rewrite made drop targets recalculate far too often. This caches the geometry instead.
  Oct 2024+500 / -17313 filesdiff →
4. #6542 Sorter improvements
  Jun 2025+90 / -716 filesdiff →
5. #6200 Add dropzone
  Oct 2024+130 / -267 filesdiff →
6. #6346 Fix drag and drop on NativeDnD set to false
  Dec 2024+112 / -505 filesdiff →
7. #6278 Fix drag and drop issue on firefox
  Firefox reports drag coordinates differently mid-drag. Took a while to find.
  Oct 2024+2 / -542 filesdiff →
8. #6192 Fix dragging (absolute dragging mode)
  Oct 2024+6 / -412 filesdiff →
9. #6553 Fix drag and drop
  Jun 2025+11 / -141 filediff →
10. #6382 Fix resizer on absolute drag mode when the parent is positioned ( position: relative | absolute | .... )
  Feb 2025+20 / -21 filediff →
11. #6197 Fix placeholder
  Oct 2024+9 / -53 filesdiff →
12. #6155 Add ability to drag multiple selected components
  Sep 2024+2 / -22 filesdiff →
13. #6600 Fix infinite text nodes on dragging into a symbol
  Dragging text into a symbol duplicated the text node on every pass. One line, reported by a user.
  Sep 2025+12 / -11 filediff →
14. #6123 Fix Sorter usage in StyleManager
  Sep 2024+8 / -11 filediff →
15. #6283 Fix layer manager drag and drop
  Oct 2024+5 / -01 filediff →
16. #6173 Fix moving selected component after dragging an unselected component
  Sep 2024+3 / -11 filediff →
17. #6297 Fix Block model init on dragging
  Nov 2024+1 / -11 filediff →
Data sources and data bindingThe framework had no way to bind a component to external data. Nineteen merged PRs later it has data variables, conditional rendering and collection components that repeat over a dataset. Most of it is still undocumented upstream, which is part of why I wrote the SDK docs for the paid version.19 PRs+12,133 / -4,822Oct 2024 – Oct 2025— show all— hide
1. #6359 Add collection components
  Collection components: repeat a component over a dataset. Largest single PR I merged there, 48 files.
  Feb 2025+3,084 / -64745 filesdiff →
2. #6482 Dynamic values improvements
  Apr 2025+1,076 / -1,28124 filesdiff →
3. #6451 Dynamic values improvements
  Mar 2025+777 / -48425 filesdiff →
4. #6351 Add Components dynamic values ( props - attributes )
  Dec 2024+1,053 / -68515 filesdiff →
5. #6419 Dynamic values improvements
  Mar 2025+1,326 / -49832 filesdiff →
6. #6282 Add conditional variables
  Conditional variables, so a component can render based on the data rather than on a hardcoded flag.
  Nov 2024+899 / -8118 filesdiff →
7. #6565 Data Binding Fixes
  A batch of data binding bugs found once real projects started using the feature.
  Aug 2025+920 / -23920 filesdiff →
8. #6601 Pages datasources
  Data sources scoped per page rather than per project.
  Oct 2025+458 / -18912 filesdiff →
9. #6495 Dynamic values improvements
  Apr 2025+675 / -40325 filesdiff →
10. #6239 Add data condition variable
  Oct 2024+839 / -014 filesdiff →
11. #6529 Datasources improvements
  May 2025+244 / -949 filesdiff →
12. #6300 Datasource types
  Nov 2024+117 / -8618 filesdiff →
13. #6270 Add datasource support to conditional variables
  Oct 2024+353 / -236 filesdiff →
14. #6301 Improve conditional variables
  Nov 2024+99 / -458 filesdiff →
15. #6229 Refactor data variable listeners to a generic dynamic variable
  Generalised the data variable listeners so conditionals and collections could reuse them.
  Oct 2024+70 / -516 filesdiff →
16. #6555 Change dynamic style events behviour
  Jul 2025+120 / -114 filesdiff →
17. #6547 Add skip resolve
  Jun 2025+16 / -33 filesdiff →
18. #6268 Throw an error if trying to access a data variable with undefined em
  Oct 2024+3 / -01 filediff →
19. #6498 Fix collection display
  Apr 2025+4 / -21 filediff →
Scrollable canvasOn a long page you could not reach anything below the fold while dragging. I made the canvas scroll, then made it scroll on its own when a dragged component gets near the edge.4 PRs+258 / -95Feb 2025— show all— hide
1. #6408 Add auto scrollable canvas
  Auto scroll the canvas when a dragged component approaches the edge.
  Feb 2025+139 / -713 filesdiff →
2. #6395 Add scrollable canvas feature
  Feb 2025+80 / -164 filesdiff →
3. #6413 Add move page method to PageManager
  Feb 2025+33 / -23 filesdiff →
4. #6404 Fix scrollable canvas
  Feb 2025+6 / -62 filesdiff →
Internals, types and performanceThe unglamorous half of the job. Type coverage for managers that had none, plus a render performance pass and the lint and typecheck script the repo was missing.18 PRs+1,274 / -388Sep 2024 – Oct 2025— show all— hide
1. GrapesJS/grapesjs#6621 Performance improvements
  Render performance pass on the editor.
  Oct 2025+174 / -617 filesdiff →
2. GrapesJS/grapesjs#6531 Update component styles
  Jun 2025+260 / -20710 filesdiff →
3. GrapesJS/grapesjs#6501 Add an option to convert attributes with hyphens to camel case
  Apr 2025+200 / -226 filesdiff →
4. GrapesJS/grapesjs#6550 Add types.ts for device manager
  The device manager had no types at all.
  Jun 2025+68 / -243 filesdiff →
5. GrapesJS/grapesjs#6164 Prevent nesting instances of the same symbol
  Sep 2024+86 / -12 filesdiff →
6. GrapesJS/cli#294 Add unit tests for utils.ts
  Unit tests for the CLI utils, which had none.
  Sep 2024+359 / -14 filesdiff →
7. GrapesJS/grapesjs#6291 Fix cloning pages issue
  Nov 2024+47 / -22 filesdiff →
8. GrapesJS/grapesjs#6564 Fix layer visibility toggle
  Jul 2025+25 / -63 filesdiff →
9. GrapesJS/grapesjs#6379 Switch bottom left radius with bottom right radius
  Jan 2025+8 / -82 filesdiff →
10. GrapesJS/cli#292 Update README: Linting fixes and content updates
  Sep 2024+25 / -402 filesdiff →
11. GrapesJS/grapesjs#6380 Apply constraints only if value of a style input is a valid number
  Jan 2025+5 / -21 filediff →
12. GrapesJS/grapesjs#6182 Fix studio symbols issue
  Oct 2024+4 / -41 filediff →
13. GrapesJS/grapesjs#6166 Fix CLI installation and add Windows compatibility for scripts
  Sep 2024+2 / -22 filesdiff →
14. GrapesJS/grapesjs#6544 Fix style manager undo not working
  Jun 2025+3 / -21 filediff →
15. GrapesJS/grapesjs#6381 Fix important value not clearing after changing the selected component
  Feb 2025+2 / -21 filediff →
16. GrapesJS/grapesjs#6599 Add check script ( lint && format:check && ts:check )
  Added a single check script wiring lint, format and typecheck together.
  Sep 2025+1 / -01 filediff →
17. GrapesJS/mjml#399 Fix passing down options for component.toHTML
  Jul 2025+4 / -31 filediff →
18. GrapesJS/grapesjs#6440 Fix scss path error in windows
  Windows path separators broke the SCSS build. Nobody on the team was on Windows.
  Mar 2025+1 / -11 filediff →
Datopian · Full-Stack Developer
Nov 2023 — Jul 2024
California, USA (Remote) | Full-time
- Maintained MarkdownDB and Flowershow across 37 merged PRs, working in the open with outside contributors.
- Designed and built the onboarding flow for DataHub Cloud, which took over 60 users through setup.
- Added computed fields and document types with schema validation to MarkdownDB, plus the hot reload that made it usable while writing.
- Shipped analytics for 4 providers in Flowershow behind a single config key.
- Set up CI, integration tests and unit tests for the projects I maintained.
MarkdownDBTurning a folder of markdown files into something you can run SQL against. I wrote the link and tag extraction, then computed fields, document types with validation and the hot reload that made it usable while writing.28 PRs+4,028 / -1,069Nov 2023 – Mar 2024— show all— hide
1. flowershow/markdowndb#61 Merge v2 into main
  Merged the v2 rewrite into main.
  Nov 2023+730 / -22615 filesdiff →
2. flowershow/markdowndb#66 Refactor ast for tags/links
  Nov 2023+200 / -2308 filesdiff →
3. flowershow/markdowndb#115 Parse task inline fields
  Mar 2024+379 / -2710 filesdiff →
4. flowershow/markdowndb#71 #60 , extract tasks
  Nov 2023+146 / -77 filesdiff →
5. flowershow/markdowndb#59 #58 , refactor mddb code to use
  Nov 2023+123 / -1796 filesdiff →
6. flowershow/markdowndb#76 Add basic blog example in the readme
  Nov 2023+273 / -011 filesdiff →
7. flowershow/markdowndb#92 Add computed fields to SQL
  Pushed computed fields down into the SQL layer instead of computing them per query.
  Dec 2023+74 / -304 filesdiff →
8. flowershow/markdowndb#108 Add tests for computed fields and document types, Fix duplicate tags issue
  Jan 2024+377 / -188 filesdiff →
9. flowershow/markdowndb#97 Add configuration with include/exclude options
  Dec 2023+117 / -198 filesdiff →
10. flowershow/markdowndb#56 Add link extraction
  Nov 2023+231 / -642 filesdiff →
11. flowershow/markdowndb#57 Add body tags extraction
  Nov 2023+178 / -02 filesdiff →
12. flowershow/markdowndb#88 #55 , Data Validation and Document Types
  Document types with schema validation on parse.
  Dec 2023+97 / -02 filesdiff →
13. flowershow/markdowndb-app#2 Update roadmap, Add basic features list
  Dec 2023+282 / -654 filesdiff →
14. flowershow/markdowndb#103 Fix tags extraction from body
  Jan 2024+134 / -137 filesdiff →
15. flowershow/markdowndb#86 Computed Fields
  Computed fields, so a document can derive values from its own frontmatter.
  Dec 2023+65 / -68 filesdiff →
16. flowershow/markdowndb#90 Implement hot-reloading
  Hot reloading, which is what made it usable while you write.
  Dec 2023+75 / -44 filesdiff →
17. flowershow/markdowndb#63 Refactoring, links and tags extraction fixes
  Nov 2023+98 / -973 filesdiff →
18. flowershow/markdowndb#62 Update tests
  Nov 2023+84 / -155 filesdiff →
19. flowershow/markdowndb#77 Add documents types design draft
  Dec 2023+37 / -01 filediff →
20. flowershow/markdowndb#85 Update readme
  Dec 2023+63 / -411 filediff →
21. flowershow/markdowndb#73 #53 , JSON output option
  Nov 2023+22 / -03 filesdiff →
22. flowershow/markdowndb#89 Implement document types
  Dec 2023+38 / -33 filesdiff →
23. flowershow/markdowndb#79 Add JSDoc for important function in markdownDB (#75)
  Nov 2023+54 / -01 filediff →
24. flowershow/markdowndb#78 Add JSDoc for important functions in MarkdownDB class
  Nov 2023+54 / -01 filediff →
25. flowershow/markdowndb#81 #70, Link improvements
  Dec 2023+30 / -92 filesdiff →
26. flowershow/markdowndb#95 #22, MarkdownDB fails with more than 500 files in a top directory
  It fell over past 500 files in one directory.
  Dec 2023+41 / -41 filediff →
27. flowershow/markdowndb#80 Cross-Platform Compatibility for tests #75
  Nov 2023+22 / -93 filesdiff →
28. flowershow/markdowndb#51 Fixes #43 ( missing type declaration )
  Nov 2023+4 / -31 filediff →
Flowershow and PortalJSAnalytics that worked across four providers without the site author having to pick one at build time. Also hot reloading for the publishing pipeline, and image sizing for wiki links in PortalJS.9 PRs+855 / -92Dec 2023 – May 2024— show all— hide
1. datopian/portaljs#1084 Add image size adjustment in remark-wiki-link
  Image sizing syntax for wiki links in remark-wiki-link.
  Apr 2024+164 / -796 filesdiff →
2. datopian/portaljs#1068 Add analytics component to the core packages
  Jan 2024+239 / -19 filesdiff →
3. datahubio/blog#3 Howto on DatHub Cloud sites configuration
  May 2024+159 / -03 filesdiff →
4. flowershow/flowershow-app#14 Add docs for the new MarkdownDB features
  Dec 2023+206 / -04 filesdiff →
5. flowershow/flowershow#614 Add support for plausible, simpleanalytics, Google, PostHog analytics
  Analytics for Plausible, Simple Analytics, Google and PostHog behind one config key.
  Jan 2024+12 / -72 filesdiff →
6. flowershow/flowershow#620 Implement hot-reloading
  Hot reloading for the site builder.
  Feb 2024+4 / -21 filediff →
7. flowershow/flowershow#621 Add the ability to pass a preProcess function
  Jan 2024+3 / -01 filediff →
8. flowershow/flowershow-app#15 Add custom 404 pages documentation
  Jan 2024+26 / -02 filesdiff →
9. flowershow/flowershow-app#16 Update analytics documentation
  Jan 2024+42 / -31 filediff →
Independent Contractor · Full-Stack Developer
Nov 2022 — Oct 2023
Remote | Contract
- Built a price comparison app on Google Cloud, with a Google Shopping scraper feeding it competitor pricing.
- Shipped a Chrome extension and a VSCode extension.
- Wrote a textbook management app for organising course material, and a time tracking tool with note-taking and switchable themes.
- Smaller one-off builds: a word cloud generator, a landing page and a Trachtenberg arithmetic trainer.
Rechat Inc · Full-Stack Developer
Oct 2021 — Feb 2023
Texas, USA (Remote) | Full-time
- Cut contract preparation time by 50% for the data entry team, which is what let Rechat take on more regions.
- Traced broken e-signature forms to fillable fields embedded as JavaScript inside the PDF files, which the document pipeline was not detecting.
- Repaired hundreds of contract and disclosure PDFs that customers could not sign or complete online.
- Built the contract and signing endpoints behind the client apps, plus an internal tool that turns an uploaded PDF into a signable one.
- Rebuilt document search and the signing page itself.

Stack

17 backed by evidence

Languages: JavaScript
Frontend
Backend: PostgreSQLPrisma
Infrastructure & Tooling: GitFigmaAWS(basics)Docker(basics)
Practice: Open-source maintenance
Maintainer duties: Issue triage Pull request review Community feedbackContribution guidelines
Communication: Asynchronous communicationCross-timezone collaborationWritten technical updates

Chips with an outline have evidence behind them. Click one — most open merged pull requests here, the ↗ ones open a live GitHub search.

Open Source

5 projects

Projects I maintain or contribute to, used by teams outside the ones I built them in.

GrapesJS
26k★
Editor framework · Core Contributor
Host applications embed it to give their own users a drag-and-drop page builder.
TypeScriptRefactoringPerformanceAPI design
Source ↗Site ↗
MarkdownDB
Datopian · 500★
Content database · Maintainer
Turns a folder of markdown files into something you can run SQL against.
Next.jsTypeScriptReactPostgreSQLResponsive design
Source ↗Site ↗
Flowershow
Datopian · 1.1k★
Static site builder · Maintainer
Publishes markdown notes, docs and wikis as a website.
Next.jsTypeScriptReactResponsive design
Source ↗Site ↗
DataHub
Datopian · 2.3k★
Data portal framework · Contributor
Scaffolds a portal for publishing and exploring datasets. Formerly PortalJS.
Next.jsTypeScriptReactCKAN
Source ↗
Panora
1k★
API integration platform · Contributor
Unifies third-party SaaS APIs behind one interface. The same integration engine Panora's product runs on.
TypeScriptReactHTML/CSSRefactoring
Source ↗

Mohamed Yahia

Experience#

UX Pilot · Senior JS Developer

Habitat AI Inc. · Contract Engineer

GrapesJS · Full Stack Engineer

Datopian · Full-Stack Developer

Independent Contractor · Full-Stack Developer

Rechat Inc · Full-Stack Developer

Stack#

Open Source#

GrapesJS

MarkdownDB

Flowershow

DataHub

Panora

Experience

Stack

Open Source