Qelv

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Data

We get you the data, clean, on a schedule.

Scrapers, feeds and pipelines that keep working after launch. We keep a client's high-volume collection system reachable in production against sources built to block it. That discipline transfers to pipelines of any size.

Projects
28

7 written up on the work page

Figures published
9

listed on the work page

Free first step
Data Map

built from the market you need data from, plus a sample of what you have

Fixed price from
$1.5K

Scraper and Data-Feed Rescue

Is this you

The week this fixes.

Sentences we hear from the people who end up sending this practice a bottleneck, and what each one is costing while it stays true.

  • “The scraper broke again and nobody noticed for a week.”

    Decisions made on stale data, and a silent failure found three days later in the numbers.

  • “Their price changed Tuesday and nobody noticed until next week.”

    Spend already out the door against the wrong price.

  • “The analyst starts in March. The data is a mess now.”

    The first months of that seat spent on plumbing rather than on analysis.

That is us. Send the bottleneck

Or start with the free Data Map, below.

What a project covers

Scoped to the smallest useful system, judged against a number.

  • Scraper and data-feed rescue: take over the failing pipeline, stabilize it, keep clean data moving, with an optional monthly run
  • Collection pipelines with storage, scheduling, and monitoring designed in from the start
  • Sync into the systems that use the data: warehouses, dashboards, ERPs, storefronts

What that has looked like

  • Competitor pricing collected continuously, on a high-volume system that stays reachable against sources built to block it
  • Product data collected, normalized, and synced to your store on a schedule
  • Market data collected continuously instead of exported by hand

The measures we agree before building

One of these is picked with you at the scoping step, and reported against.

  • Feed uptime and how stale the data gets before anyone notices
  • Coverage: how much of the target set you actually capture
  • Manual interventions per week to keep the pipeline running
Send the bottleneck for a Data Map

We reply within two business days. If it is a fit, you get a one-page note on what to do first, before any sales call.

No charge, no call

4 free ways to start.

Each is a document or a sample, written by the person who would do the work. Send one input, get something back you can act on or ignore.

  • Free

    Data Map

    Where the data would come from, how often, what breaks first, and what running it costs a month.

    You send: The market you need data from, plus a sample of whatever you have now.

    You get back:

    • The sources worth collecting, and the ones that are not worth the trouble
    • A collection frequency, and what goes stale between runs
    • The failure that will happen first, and what it costs to survive it

    Two business days. No access to your systems. A sample file is enough.

    Usually precedes Competitor and Market Monitor. Nothing obliges you to take it.

  • Free

    Diagnosis of one broken source

    Pick the feed that keeps breaking. We tell you why it breaks and what it would take to stop.

    You send: The source, plus whatever error output or logs you have.

    You get back:

    • What is actually failing: blocks, layout changes, rate limits, or the schedule
    • Whether it is worth stabilising or worth replacing
    • What a rescue would involve, with the price band it falls in

    Two business days. One source, free. We do not need credentials to read an error log.

    Usually precedes Scraper and Data-Feed Rescue. Nothing obliges you to take it.

  • Free

    One-week competitor sample

    Name three competitors. We collect them for a week and send you what changed.

    You send: Three competitor names or URLs, and what you care about: prices, availability, catalog, or copy.

    You get back:

    • A week of collected records for the three, in a file you keep
    • What moved during the week, and what did not
    • What a continuous version would cost to set up and run

    One week of collection, then the file. Free, once, for three competitors. Never run against a comp set in hospitality.

    Usually precedes Competitor and Market Monitor. Nothing obliges you to take it.

  • Free

    Thousand-row cleanup sample

    Send a thousand rows of the messy file. Get them back deduped, corrected, and filled in.

    You send: A thousand rows of the list, catalog, or contact file that is not usable as it stands.

    You get back:

    • The same thousand rows, cleaned, with a change log beside them
    • The rules we applied, so you can argue with any of them
    • What the rest of the file would cost at the same standard

    Two to three business days. Strip anything you would not email. A thousand rows is enough to judge the work.

    Usually precedes Data Cleanup and Enrichment. Nothing obliges you to take it.

Every free first step across the five practices is listed together, if the problem sits between two of them.

Entry points

The ways in, each priced before work starts.

Start with one. None of them requires the next one, and each is small enough to judge on its own.

  • Scraper and Data-Feed Rescue

    Take over the pipeline that keeps breaking and keep clean data moving: blocks, captchas, layout changes, retries, alerts.

    $1.5K–$3K · Fixed price · optional monthly run · 1 to 3 weeks

    Start free with the Diagnosis of one broken source

  • Competitor and Market Monitor

    Know what competitors changed before your team notices: prices, availability, catalog, or copy, collected on a schedule.

    $1.5K–$3K · Setup · optional monthly run · 1 to 3 weeks

    Start free with the One-week competitor sample

  • Reporting Layer

    One dashboard your team actually opens, built off the data you already have rather than off a new system.

    $2K–$5K · Fixed price · 2 to 4 weeks

    Start free with the Data Map

  • Data Cleanup and Enrichment

    The list, catalog or contact file deduped, corrected and filled in. Once, properly, with the rules written down.

    $1K–$3K · One-off · 1 to 2 weeks

    Start free with the Thousand-row cleanup sample

Every price, fixed or by the hour, is agreed before work starts and built the same way: the hours, the tools, and a share of company cost. See how a price is built

The free first step

What the first move looks like.

Examples of what we sent back after a bottleneck came in.

Between September 2025 and March 2026 we held about forty-five discovery calls, each used to define a practical first move.

Data Map, delivered as a system diagramOne place to read a restaurant's point of sale, social, and web analyticsWhat happened: Discovery only. No build.

A restaurant group wanted its point-of-sale data, social channels, and web analytics readable in one place, so marketing could be decided from the numbers rather than from instinct.

What it covered

  • A diagram of the data flow from the point of sale through social and web analytics into one store
  • What an AI layer over that store could answer, and what it could not
  • The discovery scope, and the smallest channel test that would prove the value first
The first move
A channel test before the platform.

October 2025

Data Map, delivered as structured discoveryTreasury forecast automation for a logistics groupWhat happened: Discovery only. No build.

A family-run logistics group built its weekly cash-flow forecast by hand from two reports out of its freight system, with stakeholders in two countries.

What it covered

  • An intent summary agreed before the workshops
  • Discovery workshops on the forecast as it was assembled, report by report
  • A bilingual non-disclosure agreement, and a discovery output the group could take to a build
The first move
Automate the two report pulls before touching the forecast model.

October 2025 to January 2026

Send us the bottleneck

The note comes back before any sales call, or we say it is not a fit.

The work

What this looks like shipped.

A high-volume hotel pricing-data system

169 properties, same day

Delivery record, Qelv engineering record · 2026

Scheduled collection, retries and monitoring that keep a travel-market data system running at more than eight million live requests a month, without adding headcount to maintain the feed.

In production

4 figures

Under client agreement. The client owns this system. Ask and we will walk you through how it was built and what it changed.

Request a walkthrough

A retail catalog pipeline that keeps a Shopify store current

Scrapes Costco product data on a schedule, normalizes and stores it, and syncs price and stock to Shopify.

Our engineering · Delivered

Read the case study

A self-hosted email verification engine built for explainable results

34 reason codes · 25 output columns

Qelv engineering record · June 2026

An internal product: a bulk verification CLI with DNS and multi-stage SMTP checks that explains each classification instead of emitting a black-box score, deployed on its own verification node and run on real lead lists.

Internal product · Delivered

2 figures

Read the case study

A batch product-data API for marketplace catalogs

Takes a batch of marketplace product URLs, up to 100 per request, and returns each product's barcode, images, price, and description as a CSV attachment, with explicit success, partial, and failure contracts per item.

Delivered

Source not public. Our own engineering. We will screen-share the code, the architecture, and the tests with anyone seriously evaluating us; publishing the repository invites the scrapers we spend our days defeating.

Request a code walkthrough

Public-records search and retrieval, automated

Drives the Hamilton County clerk-of-court foreclosure search with Selenium and retrieves each matching PDF, retrying failed downloads: a job otherwise done by hand, one case at a time.

Delivered

Source not public. Our own engineering. We will screen-share the code, the architecture, and the tests with anyone seriously evaluating us; publishing the repository invites the scrapers we spend our days defeating.

Request a code walkthrough

County-scale property and cadastral data extraction

Extracts Montana cadastral and property records from the cadastral API and its HTML pages into CSV, with a notebook analysing extraction performance.

Delivered

Source not public. Our own engineering. We will screen-share the code, the architecture, and the tests with anyone seriously evaluating us; publishing the repository invites the scrapers we spend our days defeating.

Request a code walkthrough

A cold-outreach engine we ran on our own pipeline first

247 qualified leads

Email outreach results report, Qelv internal record · July to October 2025

Contact sourcing from Apollo, verification, warmed secondary sending domains, sequenced copy, reply triage, and weekly deliverability reporting. We ran it at scale on our own program through the second half of 2025, then for a partner under their brand, as a pilot for a client, and on hourly contracts.

Internal product · Delivered

3 figures

Read the case study

6 more data projects

What else we have built in this area, and what changed as a result.

Engagements in this catalogue, described without numbers and, in most cases, without the client: they were built under confidentiality or under another firm's brand. For numbers with sources behind them, see the work page.

OperationsA supplier feed that changed shape every quarter

Suppliers sent the same data in their own formats and quietly changed them. Every change broke the import, and it was usually a person downstream who noticed first.

What we built

  • A per-supplier mapping layer, so a format change is a config edit rather than a code change
  • Schema validation at the door, rejecting a bad file instead of half-importing it
  • Alerting that names the supplier and the field that moved
  • A quarantine area, so a rejected file can be inspected rather than lost

What changed

A supplier changing their export stopped being an outage, and the team found out from an alert rather than from a customer.

Fixed-price build, then a monthly run

Python · Schema validation · Object storage · Alerting

Under client agreement. The client owns this system. Ask and we will walk you through how it was built and what it changed.

Request a walkthrough

OperationsOne number, instead of three departments disagreeing

Finance, sales, and operations each reported a different figure for the same month, and every meeting started by arguing about which was right.

What we built

  • Extraction from each source system on a schedule
  • A modelled layer where the definitions are written down and applied once
  • Reconciliation checks that fail loudly when two sources disagree
  • Dashboards built on the modelled layer, so nobody reports off a raw export

What changed

The definition argument moved out of the meeting and into a documented model everyone could read.

Phased fixed-price, source by source

Python · SQL · Warehouse · Dashboards

Under client agreement. The client owns this system. Ask and we will walk you through how it was built and what it changed.

Request a walkthrough

OperationsInheriting a scraper that had stopped working

A collection pipeline built by a departed contractor had been failing intermittently for months. Nobody knew whether a quiet day meant no data or no run.

What we built

  • Diagnosis of why it was failing, before touching the collection logic
  • Retry, backoff, and rotation appropriate to how the source actually defends itself
  • Monitoring that distinguishes 'ran and found nothing' from 'did not run'
  • A written runbook so the next failure is not an investigation

What changed

A silent failure became a notification, and the team stopped discovering gaps weeks after the fact.

Fixed-price rescue, optional monthly run

Python · Proxy rotation · Scheduling · Monitoring

Under client agreement. The client owns this system. Ask and we will walk you through how it was built and what it changed.

Request a walkthrough

OperationsA decade of back-archive PDFs turned into a queryable dataset

The answers a team needed were already in thousands of documents sitting in a shared drive, findable only by someone who remembered which file it was in.

What we built

  • Bulk text and table extraction across mixed document quality, including scans
  • A schema for the fields that mattered, with extraction confidence recorded per field
  • Search across the extracted set, linked back to the page it came from
  • A re-run path, so improving the extraction does not mean starting over

What changed

Questions that used to require someone's memory of the archive became a search.

Fixed-price build

Python · OCR · Text extraction · Search index

Under client agreement. The client owns this system. Ask and we will walk you through how it was built and what it changed.

Request a walkthrough

Customer-facingA scraping prototype in a day, then the developer who kept it running

A fitness-product company · Fitness products

A fitness-product company needed sports data scraped quickly, and had struggled to find remote developers it could work with.

What we built

  • A working scraping prototype for the target data set, delivered within a day of the ask
  • A developer screened and placed on the client's work
  • A search audit and keyword plan later in the engagement

What changed

It had its data the next day, praised the developer in writing, and later introduced us to a third firm unprompted.

Prototype, then a placement on a monthly arrangement

Python scraping · WordPress · Search Console

Under client agreement. The client owns this system. Ask and we will walk you through how it was built and what it changed.

Request a walkthrough

OperationsList building and contact extraction for a US industrial supplier

Plastix USA · Industrial supplies

A US supplier needed email-marketing lists built in Apollo, and web addresses and contacts extracted for its target accounts.

What we built

  • Apollo list building against the supplier's segments
  • Automated extraction of web addresses and contacts for the target set

What changed

The supplier's outreach had lists behind it rather than a spreadsheet someone was still typing.

Hourly, over four months

Apollo.io · Python · Marketplace contract

Under client agreement. The client owns this system. Ask and we will walk you through how it was built and what it changed.

Request a walkthrough

Browse the full catalogue

Where to next

The free first step: a Data Map.

Send the market you need data from, plus a sample of what you have. The reply says what to do first, and whether it is worth doing at all.

We reply within two business days. If it is a fit, you get a one-page note on what to do first, before any sales call.