Sparkler Soft
Mobile & Web Development Agency | iOS · Android · AI/ML · Backend
If this is your agency
#15,795
of 28,921 agencies on Upwork by lifetime earnings, and #962 in Machine Learning.
- #15,794Wipiway$0 ahead
- #15,795Sparkler Softthis agency
- #15,796SAWARGA DIGITAL INDONESIA$0 behind
Total earned
$1.9K
lifetime, as published
Jobs
5
contracts to date
Hours
29
billed hourly
Job Success
100%
JSS
Hourly rate
$35/hr
team range
Index Score
54
#7407 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
- $3.7K/yr estimate
- Lifetime earnings divided by years on Upwork. A floor on historical pace, not a forecast.
- Earnings per job
- $375
- Average contract value to date.
- Recent earnings, per Upwork
- $1.6K
- The "recent" figure Upwork attaches to the directory card, with 28 recent hours. Upwork does not publish the window, so it is shown as its number, not ours.
- Realised hourly
- $65/hr
- Total earned over billed hours. Fixed-price work inflates it; compare with the rate card.
Index Score breakdown54.2/100
Scale 18.7/40Quality 20/20Trust 0/15Momentum 9/15Team 6.5/10
Observation history
Every read of the public page. Last observed Oct 29, 2026 (live read).
| Observed | Earned | Δ | Jobs | JSS |
|---|---|---|---|---|
| Oct 29, 2026 | $1.9K | 5 | 100% |
One observation so far. The index re-reads every page on a rolling schedule; claimed pages are read weekly.
About
Sparkler Soft is a Warsaw-based software development agency with 10+ years of experience building native mobile apps and robust backend systems for startups, scale-ups, and established businesses worldwide. We have shipped 50+ products across iOS, Android, Web, IoT, and Blockchain - including AI-powered diagnostics apps, crypto marketplaces, real estate NFT platforms, and food delivery services operating in 150+ cities. WHAT WE BUILD Native iOS apps (Swift, Objective-C) - iPhone, iPad, Apple Watch, Apple TV Native Android apps (Java, Kotlin) - phones, tablets, IoT devices Backend & Web services - Java, Golang, JavaScript, AWS, CRM/ERP, REST API AI & Machine Learning - neural networks, computer vision, diagnostics Blockchain & Web3 - smart contracts, NFT, crypto wallets DevOps - AWS, Azure, Google Cloud, server setup & support WHY CLIENTS CHOOSE US We only take projects we are 100% sure we can deliver Fixed scope = fixed price - no budget surprises Native code only - no cross-platform shortcuts Full cycle: design - development - launch - support Free 30-minute discovery call available. Let's discuss your project.Read more
Skills
GolangJavaAmazon Web ServicesiOS DevelopmentNode.jsMachine LearningKotlinREST APIDevOpsJavaScriptSwiftComputer VisionAndroid App DevelopmentTensorFlowPython
Agency facts
- Team size
- 11-50
- Teams on Upwork
- 1
- Founded
- Not published
- Member since
- Apr 2026
- Last contract
- Sep 2026
- Owner
- Siarhei L.
- Client focus
- Large business, Medium business, Very small business, Small business
- Country
- Warsaw, Poland
- Languages
- Not published
Agencies in the same categories
Share this ranking
Sparkler Soft is #15795 of 28,921 Upwork agencies. Post the card, or share the link and the card comes with it.
Live badges for your site
One for each ranking: overall, every category, and your country. Each refreshes with the index.
#15795 overall
<a href="https://www.upworkinsights.com/agencies/sparkler-soft"><img src="https://www.upworkinsights.com/badge/sparkler-soft" alt="Sparkler Soft, #15795 overall on Upwork Insights" width="360" height="64"></a>
#962 in Machine Learning
<a href="https://www.upworkinsights.com/agencies/sparkler-soft"><img src="https://www.upworkinsights.com/badge/sparkler-soft?category=machine-learning-companies" alt="Sparkler Soft, #962 in Machine Learning on Upwork Insights" width="360" height="64"></a>
#1044 in Java
<a href="https://www.upworkinsights.com/agencies/sparkler-soft"><img src="https://www.upworkinsights.com/badge/sparkler-soft?category=java-companies" alt="Sparkler Soft, #1044 in Java on Upwork Insights" width="360" height="64"></a>
#1596 in Android App Development
<a href="https://www.upworkinsights.com/agencies/sparkler-soft"><img src="https://www.upworkinsights.com/badge/sparkler-soft?category=android-app-development-companies" alt="Sparkler Soft, #1596 in Android App Development on Upwork Insights" width="360" height="64"></a>
#1733 in iOS App Development
<a href="https://www.upworkinsights.com/agencies/sparkler-soft"><img src="https://www.upworkinsights.com/badge/sparkler-soft?category=ios-app-development-companies" alt="Sparkler Soft, #1733 in iOS App Development on Upwork Insights" width="360" height="64"></a>
#179 in Poland
<a href="https://www.upworkinsights.com/agencies/sparkler-soft"><img src="https://www.upworkinsights.com/badge/sparkler-soft?country" alt="Sparkler Soft, #179 in Poland on Upwork Insights" width="360" height="64"></a>
Upsight, from the makers of this index
Grow your rank with Upsight
Upsight watches every new job in your categories, scores fit against your past wins, drafts the proposal in your voice and submits it from your agency login, then follows the reply to the contract.