Kostiantyn Che
CV (in the original language)
FinTech.
Reviews of completed projects 11
14 April
601 USD
3.3. security hardening, permission enforcement and merchant operational settings
Very pleasant collaboration, I hope we can bring the project to a working state. I recommend for collaboration.
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8 April
579 USD
Merchant model 3.2
Great client, very comfortable collaboration. Clearly formulates tasks, responds quickly during the work, adequately discusses details and changes regarding the project. Always in touch, open to constructive dialogue, without unnecessary pressure and with clear logic regarding the stages. Payment and closing of stages without problems. I recommend for collaboration.
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7 April
601 USD
Merchant Profile & Admin Creation
Everything is as always at a high level. I recommend for collaboration.
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3 April
445 USD
Project 2.3: Admin panel (RBAC), creation of merchants and Hybrid outputs (Risk Engine).
Quick professional communication. Quick correct solutions. I recommend for collaboration.
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31 March
445 USD
Project 2.2: Internal Ledger, commission calculation (Fee Levels), balance logic, hosted checkout
Everything as always at the highest level, we continue to collaborate.
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30 March
557 USD
Project 2.1 Integration of CEX.io API, address generation, deposit webhooks.
Everything as always at the highest level. Clear understanding of the task and understanding of the final result.
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27 March
601 USD
Building a SaaS layer (blockchain)
Pleasant client, easy to contact, I recommend for collaboration.
7 March
78 USD
Test landing page with payment page
Pleasant and responsible client. The task was clearly formulated, communication was quick and constructive. Payment was made on time. During the work, there were technical problems on the side of the third-party API, but the client was understanding and correctly closed the project. I would be happy to collaborate further.
2 March
100 USD
Update landing page
The collaboration went smoothly and productively. Clear technical specifications, quick feedback, and adequate requirements. Thank you for the project, I recommend the client.
28 November 2025
24 USD
Update the landing page txgo.io
Thank you! Everything went wonderfully!
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19 September 2025
156 USD
Creation of a landing page for a fintech project
Thank you! Everything went well! Quick communication and clear project brief!
Activity
| Latest published projects |
Budget
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Proposals
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Comments
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Open
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|---|---|---|---|---|---|
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3.3. security hardening, permission enforcement and merchant operational settings
601 USD
|
9
Apr
|
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Merchant model 3.2
579 USD
|
7
Apr
|
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|
Merchant Profile & Admin Creation
601 USD
|
6
Apr
|
||||
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Project 2.3: Admin panel (RBAC), creation of merchants and Hybrid outputs (Risk Engine).
445 USD
|
31
Mar
|
||||
|
Project 2.2: Internal Ledger, commission calculation (Fee Levels), balance logic, hosted checkout
445 USD
|
30
Mar
|
||||
|
Project 2.1 Integration of CEX.io API, address generation, deposit webhooks.
557 USD
|
29
Mar
|
||||
|
Building a SaaS layer (blockchain)
601 USD
|
24
Mar
|
||||
|
Test landing page with payment page
78 USD
|
27
Feb
|
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|
Update landing page
100 USD
|
26
Feb
|
||||
|
Update the landing page txgo.io
24 USD
|
Nov
2025
|