You will get a secure and scalable crypto wallet backend (Web3, multi-chain, FastApi)
Project details
I build backend infrastructure for crypto products - from wallet systems to full transaction processing pipelines.
My focus is not just writing code, but designing reliable architectures that handle multi-chain wallets, transactions, events, and API integrations at scale.
I approach each project as a system, not a feature - ensuring it is structured, maintainable, and ready for real-world production use.
My focus is not just writing code, but designing reliable architectures that handle multi-chain wallets, transactions, events, and API integrations at scale.
I approach each project as a system, not a feature - ensuring it is structured, maintainable, and ready for real-world production use.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$100
|
Standard
$300
|
Advanced
$800
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 14 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast delivery (priority execution)
(+ 1 Day)
+$50
Security optimization & audit
(+ 2 Days)
+$100
Additional blockchain integration
(+ 3 Days)
+$150About Emil
Backend / Blockchain Integration Developer (Crypto, Wallets, Custody)
Yerevan, Armenia - 5:07 pm local time
My focus:
• Multi-chain wallet & custody systems (EVM, TRON, TON, BTC)
• Blockchain integrations and transaction processing
• DEX wallets and non-custodial flows
• REST APIs, webhooks, and backend architecture
I have hands-on experience building real systems used in crypto platforms, including custody infrastructure, admin panels, and blockchain scanners.
I work with both Python (FastAPI) and .NET Core (C#), depending on the project needs.
If you need a reliable backend for a crypto product — I can help.
Steps for completing your project
After purchasing the project, send requirements so Emil can start the project.
Delivery time starts when Emil receives requirements from you.
Emil works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements & architecture
Analyze your requirements, define architecture, and choose the optimal approach for your use case
Backend & integration setup
Implement wallet logic, blockchain connections, API structure, and integrations