Hey HN,

I’ve been working on job application pipelines and kept hitting a massive data friction point: reliably filtering out UK companies that legally cannot sponsor international workers.

The UK Home Office publishes a constantly updating CSV of licensed sponsors. The problem is, the data is practically useless for standard database joins. A job board might list a role at "Acme", but the government registry lists "Acme Technologies Holdings Limited".

If you run an exact-string match or a basic ILIKE against a scrape of 10,000 Indeed or LinkedIn jobs, your false-negative rate is massive.

I wrote a TypeScript-based matching engine to solve this. Here is the pipeline:

Dynamic Ingestion: It bypasses the Gov.uk dynamic routing to pull the raw, multi-megabyte CSV directly into memory. No stale database records.

Text Normalization: I built a custom parser to strip out standard corporate suffixes ("ltd", "plc", "llp", "t/a", etc.) and handle the weird punctuation and localized encodings that break standard scrapers.

Fuzzy Scoring: It runs an optimized Levenshtein distance algorithm over the in-memory array to output a 0-100 confidence score for the match.

Initially, I built this with a persistent local cron scheduler (node:fs) for an open-source job ops project. But to make it scalable for batch processing, I ripped out the local caching and deployed it as an ephemeral Docker container. It spins up, processes an array of thousands of scraped companies entirely in-memory in a few seconds, pushes a clean JSON dataset of verified sponsors, and dies.

If you are building a job aggregator, an ATS, or a lead-gen pipeline and don't want to waste a weekend writing your own corporate-suffix normalization logic, I hosted the serverless endpoint here: https://apify.com/dakheera47/uk-visa-sponsor-verifier

I'd love any feedback on the text normalization approach, or to hear if anyone knows of specific edge cases in the Home Office data formatting that I might have missed.

Show HN: Fuzzy-matching messy job board data against the UK Gov Visa Registry