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English
$
USD
I will develop the backend for crypto, defi, and fintech platforms
Powering your fintech and Web3 ideas with robust backend systems
Hi, I'm a backend developer with a passion for building secure and scalable systems for fintech and Web3 applications. I specialize in creating robust APIs, integrating crypto wallets, and supporting ...
About this Gig
Are you building a blockchain or fintech app and need a solid backend to support it?
I specialize in building secure, scalable, and high-performance backend systems tailored for:
Fintech Solutions:
- E-wallet systems
- Payment processing APIs
- Investment or savings platforms
- Banking-as-a-Service backends
Web3 & Blockchain Projects:
- Smart contract integration (EVM chains like Ethereum, Polygon, BSC)
- Crypto wallets & staking systems
- Token transaction tracking
- NFT minting backends
- DeFi platform APIs
- Web3.js / Ethers.js integration
️ What You'll Get
- REST API / GraphQL endpoints
- Wallet integrations (Metamask, Trust Wallet, Tatum, etc.)
- Secure user authentication (JWT, OAuth, 2FA)
- Admin dashboards or data analytics backends
- PostgreSQL, MongoDB, or MySQL setup
- Deployment support (Docker, VPS, cloud)
Tech Stack
- Backend: Node.js, Express, NestJS, Django, FastAPI
- Blockchain: Solidity, Web3.js, Ethers.js, Moralis, Alchemy, Tatum
- DB: MongoDB, PostgreSQL, Redis
- Auth & Security: JWT, OAuth2, 2FA
- Other: Docker, Git, Stripe, Firebase
Keep your assets and information safe
Cryptocurrency services focus solely on developing and programming. Never share sensitive information or private keys with others.
My Portfolio
FAQ
What technologies do you use to build the backend?
I use Node.js (Express or NestJS), Django, or FastAPI for backend development. I work with MongoDB, PostgreSQL, and MySQL databases. For Web3 integration, I use Web3.js, Ethers.js, Solidity, and services like Moralis, Tatum, and Alchemy.
Can you integrate crypto wallets or exchanges into my platform?
Yes! I can integrate wallets like MetaMask, Trust Wallet, and also connect your app with crypto exchanges or APIs like Tatum, Moralis, or CoinGecko for real-time data.
Can you build a complete fintech or DeFi backend with admin access?
Absolutely. I can develop admin panels, user dashboards, and full-featured backend systems for financial apps including wallets, transactions, reports, and analytics.
Is my financial or blockchain data secure with your solution?
Yes. I follow best practices for security including encrypted databases, secure authentication (JWT/OAuth), and safe handling of API keys and wallet data.
Can you deploy the backend to a server or cloud platform?
Yes, I can deploy your backend to VPS (like Hostinger or DigitalOcean), or cloud platforms such as AWS, Heroku, or Vercel. I can also containerize your app using Docker if needed.
Reviews
3 reviews for this Gig
| (3) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
T themosticonic
Repeat Client
United States
Great job installed multiple blockchains to my existing wallet.
$200-$400
Price
1 day
Duration
Helpful?T themosticonic
Repeat Client
United States
Helped us build more chains to our wallet. He did a great job putting in another order!
$100-$200
Price
1 day
Duration
Helpful?T themosticonic
Repeat Client
United States
Fast, easy, and knew what he was doing and flexible.
$50-$100
Price
3 days
Duration
Helpful?
Reviews
3 reviews for this Gig
| (3) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
T themosticonic
Repeat Client
United States
Great job installed multiple blockchains to my existing wallet.
$200-$400
Price
1 day
Duration
Helpful?T themosticonic
Repeat Client
United States
Helped us build more chains to our wallet. He did a great job putting in another order!
$100-$200
Price
1 day
Duration
Helpful?T themosticonic
Repeat Client
United States
Fast, easy, and knew what he was doing and flexible.
$50-$100
Price
3 days
Duration
Helpful?
