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Stan S.

Stan S.

Warsaw, Poland
Job Success
Top Rated

80M+ raised with apps I've built | Rockstar iOS & Mobile App Developer

Want to build an app or a blockchain solution? My expertise in mobile & blockchain development is ready to serve your business. Key facts: * I have been on the market for over 7 years; * Apps I've developed have raised $60M+; * More than 80 Upwork reviews with 100% Job Success Score; * Smart contract engineer for largest NFT drops, DeFi, DEXs. Clients often choose my app development service which includes creating apps from scratch, optimization, quality assurance. My key experiences area: Swift, Java, React Native, Flutter. Blockchain: Solidity, Rust. Being builders of world’s largest startups, helping enterprises to optimize & acquire larger share of the market is our passion. Our team excels in Healthcare & Blockchain industries. We’ve also done multiple products & are experts in Social, e-Commerce, Transportation & Logistics, Entertainment, Fitness, e-Learning, Insurance & Manufacturing.
Rating is 2.6 out of 5.
2.60 Apr 1, 2021 - Dec 5, 2022
Private earnings
Rating is 5 out of 5.
5.00 Feb 13, 2020 - Nov 9, 2020

"ok"

Private earnings
Rating is 5 out of 5.
5.00 Apr 30, 2020 - Sep 1, 2020
Private earnings
Rating is 5 out of 5.
5.00 May 18, 2020 - Jul 2, 2020

"Stan and his team are very focused on the success of their clients. They have just the right approach to ensuring delivery of a high-quality product that meets the needs of the market."

Private earnings
Rating is 5 out of 5.
5.00 Apr 20, 2020 - Apr 25, 2020

"Great work! They were able to adapt to our current codebase very well, and successfully completed all the required features. Will definitely come to them again for future projects!"

Private earnings
Rating is 4.3 out of 5.
4.30 Feb 29, 2020 - Mar 26, 2020

"Project is not yet done - as instructed by upwork we change contracts to fixed milestone plan. Review will be given after project is finalized."

Private earnings
Rating is 5 out of 5.
5.00 Sep 13, 2019 - Jan 8, 2020

"Great to work with and delivered a high quality product."

Private earnings
Rating is 5 out of 5.
5.00 Aug 17, 2018 - Feb 5, 2019

"Stanislau is a great iOS developer. I was always happy with the speed and quality of his code. Communication was very easy. I will hire him again for future projects."

Private earnings
Rating is 5 out of 5.
5.00 Aug 15, 2018 - Oct 27, 2018

"Stanislau was very good to work with. He was efficient with the completion of required tasks. Would recommend him to people looking for quality UI and UX work."

Private earnings
Stan S. has more jobs. Create an account to review them

Portfolio

AcneAway - 5 thousand dollars after 6 months
AcneAway - 5 thousand dollars after 6 months
Nash - Swiss DEX Development
Nash - Swiss DEX Development
Want to see more? Create Account

Skills

Stan S.

Stan S.

Warsaw, Poland
Job Success
Top Rated
82
Total Jobs
12,119
Total Hours

View profile

80M+ raised with apps I've built | Rockstar iOS & Mobile App Developer

Specializes in
Want to build an app or a blockchain solution? My expertise in mobile & blockchain development is ready to serve your business. Key facts: * I have been on the market for over 7 years; * Apps I've developed have raised $60M+; * More than 80 Upwork reviews with 100% Job Success Score; * Smart contract engineer for largest NFT drops, DeFi, DEXs. Clients often choose my app development service which includes creating apps from scratch, optimization, quality assurance. My key experiences area: Swift, Java, React Native, Flutter. Blockchain: Solidity, Rust. Being builders of world’s largest startups, helping enterprises to optimize & acquire larger share of the market is our passion. Our team excels in Healthcare & Blockchain industries. We’ve also done multiple products & are experts in Social, e-Commerce, Transportation & Logistics, Entertainment, Fitness, e-Learning, Insurance & Manufacturing.
Rating is 2.6 out of 5.
2.60 Apr 1, 2021 - Dec 5, 2022
Private earnings
Rating is 5 out of 5.
5.00 Feb 13, 2020 - Nov 9, 2020

"ok"

Private earnings
Rating is 5 out of 5.
5.00 Apr 30, 2020 - Sep 1, 2020
Private earnings
Rating is 5 out of 5.
5.00 May 18, 2020 - Jul 2, 2020

"Stan and his team are very focused on the success of their clients. They have just the right approach to ensuring delivery of a high-quality product that meets the needs of the market."

Private earnings
Rating is 5 out of 5.
5.00 Apr 20, 2020 - Apr 25, 2020

"Great work! They were able to adapt to our current codebase very well, and successfully completed all the required features. Will definitely come to them again for future projects!"

Private earnings
Rating is 4.3 out of 5.
4.30 Feb 29, 2020 - Mar 26, 2020

"Project is not yet done - as instructed by upwork we change contracts to fixed milestone plan. Review will be given after project is finalized."

Private earnings
Rating is 5 out of 5.
5.00 Sep 13, 2019 - Jan 8, 2020

"Great to work with and delivered a high quality product."

Private earnings
Rating is 5 out of 5.
5.00 Aug 17, 2018 - Feb 5, 2019

"Stanislau is a great iOS developer. I was always happy with the speed and quality of his code. Communication was very easy. I will hire him again for future projects."

Private earnings
Rating is 5 out of 5.
5.00 Aug 15, 2018 - Oct 27, 2018

"Stanislau was very good to work with. He was efficient with the completion of required tasks. Would recommend him to people looking for quality UI and UX work."

Private earnings
Stan S. has more jobs. Create an account to review them

Portfolio

AcneAway - 5 thousand dollars after 6 months
AcneAway - 5 thousand dollars after 6 months
Nash - Swiss DEX Development
Nash - Swiss DEX Development
Want to see more? Create Account

Skills

As Needed - Open to Offers

< 3 days response time

Interexy
Interexy
31,051 hours
100% Job Success
Top Rated Plus

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