Callstack Labs
Fullstack Applications | Astro | Nextjs | Automations | CRM Integrations
If this is your agency
#19,934
of 28,921 agencies on Upwork by lifetime earnings, and #3,370 in Web Development.
- #19,933Luden Digital$0 ahead
- #19,934Callstack Labsthis agency
- #19,935Byte & Kite$0 behind
Total earned
$425
lifetime, as published
Jobs
1
contracts to date
Hours
10
billed hourly
Job Success
Not rated yet
not yet rated
Hourly rate
$55–$75/hr
team range
Index Score
32
#24071 overall
Insights
How these are computed- Run-rate, measured
- pending
- Needs two observations at least 14 days apart. Our next read of this page turns this on. Nothing is extrapolated from a single contract.
- Lifetime pace
- $123/yr estimate
- Lifetime earnings divided by years on Upwork. A floor on historical pace, not a forecast.
- Earnings per job
- $425
- Average contract value to date.
- Recent earnings, per Upwork
- $0
- The "recent" figure Upwork attaches to the directory card. Upwork does not publish the window, so it is shown as its number, not ours.
- Realised hourly
- n/a
- Total earned over billed hours. Fixed-price work inflates it; compare with the rate card.
Index Score breakdown31.5/100
Scale 15/40Quality 10/20Trust 0/15Momentum 3/15Team 3.5/10
Observation history
Every read of the public page. Last observed Oct 29, 2026 (live read).
| Observed | Earned | Δ | Jobs | JSS |
|---|---|---|---|---|
| Oct 29, 2026 | $425 | 1 | Not rated |
One observation so far. The index re-reads every page on a rolling schedule; claimed pages are read weekly.
About
At Callstack Labs, we are a technology agency that specializes in building Custom Software Solutions for startups and growing businesses. Our deep experience in the tech industry allows us to understand business needs and execute fast to meet these needs. Our Solutions: - Landing pages - Web Applications - Gen AI systems using business data - CRM Integrations and Automations Why work us: - We iterate fast - We love solving problems - No sales people. You will work with the developerRead more
Skills
FirebaseTask AutomationWeb Development ConsultationAI ConsultingReactFront-End DevelopmentJavaScriptWeb DevelopmentBack-End DevelopmentPython
Agency facts
- Team size
- 2-10
- Teams on Upwork
- 1
- Founded
- Not published
- Member since
- May 2023
- Last contract
- Oct 2024
- Owner
- Hassib A.
- Client focus
- Medium business, Very small business, Small business
- Members in
- United States
- Languages
- Not published
Agencies in the same categories
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Callstack Labs is #19934 of 28,921 Upwork agencies. Post the card, or share the link and the card comes with it.
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#19934 overall
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#3370 in Web Development
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#3351 in United States
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