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I will fix slow angular tables and lists with virtual scrolling
Roman
About this gig
Does your Angular table freeze when it loads a few thousand rows? Scrolling that takes seconds, a browser tab that hangs - this is a rendering problem, and it has a clear fix.
WHAT I DO
- Virtual scrolling: only visible rows and columns are rendered
- Sticky headers and columns that stay correct while scrolling
- Horizontal virtualization for wide tables with 100+ columns
- Change detection and trackBy tuning
- Before/after measurements so you can see the difference
MY EXPERIENCE
I built vertical and horizontal virtualization from scratch for a production Angular app with tables of several thousand cells, including sticky columns and dynamic column widths. Angular CDK does not cover that case, so I implemented the scroll calculations myself.
I work with Angular 2 through 19, Angular Material, and custom table components.
IMPORTANT - MESSAGE ME BEFORE ORDERING
Slow tables do not always come from rendering. Sometimes the real cause is a heavy API response or backend query, and virtual scrolling will not help.
Send me your repository or the table component first. I will check it and tell you honestly whether I can fix it, and which package fits.
Get to know Roman
Roman
Angular and TypeScript Developer, Electron Desktop Apps, Bug Fixing
- FromUkraine
- Member sinceOct 2026
Languages
Ukrainian, English
Frontend developer specializing in Angular and TypeScript.
I work on a large Angular 19 + Electron desktop app - strict TypeScript, Signals, RxJS, TypeORM + SQLite, and Jest.
What you get:
- I find and fix the root cause of bugs so they stay fixed.
- I keep changes minimal, scoped, and aligned with your code style.
- I comfortably navigate existing codebases to resolve complex issues.
Languages: English, Ukrainian.
Other Software Development Services I Offer
FAQ
Can you make my table faster without rewriting it?
In most cases yes. Virtual scrolling is added around your existing table, so the markup and logic stay the same. I will tell you if a rewrite is unavoidable before we start.
How many rows can it handle after the fix, and how do you measure it?
Tens of thousands of rows scroll smoothly — only the visible part is rendered. I measure before and after: scrolling FPS, render time, and DOM node count. A table holding 50,000 elements usually drops to a few hundred. Exact seconds depend on your data and device.
What if the slowness is not in the table?
Then I will tell you before you order, and you will not pay for work that cannot help. Send me the repository or component first and I will check.
Do you work with ag-Grid or PrimeNG?
I work mainly with Angular Material and custom table components. For ag-Grid or PrimeNG, send me the code first so I can confirm I can help with your specific setup.
Can you work with a private or NDA project?
Yes. I regularly work on closed-source projects under strict confidentiality rules and I am happy to sign an NDA before we start.
