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Fiverr Pro
English
$
USD
I will develop a fintech app, wallet, payments, banking and crypto
Fast, Robust, Solid: Web and Mobile Cloud Solutions
With 15+ years in software development, including 7+ years in AWS and fintech and 5+ as a Lead Solutions Architect, I help businesses turn complex ideas into secure, scalable, production-ready systems...
Vetted by Fiverr Pro
Vitalii F was selected by the Fiverr Pro team for their expertise.
Vetted for
Cloud Computing
Mobile App Development
Software Development
About this Gig
Vetted Pro
Custom Fintech Solutions Built for Scale, Security, and Speed!
I help fintech companies accelerate development with custom-built modules tailored for real-world financial applications.
Features:
- A multi-currency wallet system
- Crypto on-ramp & off-ramp
- Solana, ETH, Swaps
- Payment gateways, Payouts
- Core-banking integration
- Auth/SSO
- KYC/KYB
- Compliace module
- Mobile-friendly
- AML/Fraud detection
- Transfers and transactions
- Categorisation engine
- Fees management
- Custom AI support chat
- Dashboard and admin panel
Technical Highlights:
1) Authentication Module. Secure login flows via email, SMS. OTP/MFA/JWT
2) Immutable Ledger. Track balances and transactions with append-only logic, audit-ready compliance
3) Payment Gateways. Stripe, PayPal, or custom APIs for deposits, withdrawals, and transaction reconciliation
4) Domain Features. KYC/KYB, AML, Fraud Detection, Automated flows, and modular rule engines
5) API-First Architecture. REST/ OpenAPI / GraphQL support
6) Enterprise-Grade Security. Token-based auth, least privilege IAM, encrypted data at rest and in transit
7) Scalable by Design. Serverless-first architecture
Cloud Provider:
Amazon Web Services
Frameworks:
Npm
•
Other
Clients I’ve worked with
RIMA IT
I was responsible for implementing secure connectivity between the client infrastructure and Applied systems. My work included VPN configuration, network routing and NAT setup, SQL Server authentication hardening, creation of a restricted read-only database interface for Pathway, and validation of secure connectivity and replication.
May 2025
My Portfolio
Other Cloud Computing Services I Offer
FAQ
What technologies do you use to build the fintech solution?
I use a modern, scalable stack including TypeScript, Node.js, PostgreSQL, and AWS serverless services. This ensures high availability, performance, and cost-efficiency for financial-grade applications
Is the wallet solution secure and compliant?
Yes. The wallet module uses an immutable ledger design to ensure every transaction is traceable and tamper-proof. Security best practices (encrypted data at rest/in-transit, JWT tokens, IAM roles) are baked in. For compliance-heavy environments, I can support KYC/AML add-ons
Can I integrate this with my existing system or mobile app?
Absolutely. All modules are API-first and come with Swagger/OpenAPI documentation for easy integration. I can also help align the system with your frontend or third-party platforms
Do you support multiple currencies or multi-tenant setups?
Yes, these can be added as extras or scoped in a custom offer. Multi-currency support includes currency conversion logic and accurate decimal handling. Multi-tenant support enables isolated wallets and transactions per client or user group
Can I request a custom feature that’s not listed in the package?
Yes — I welcome custom requirements like scheduled payouts, custom transaction types, or compliance logic. Just send me your use case and I’ll provide a tailored offer.
Will I get the full source code?
Yes. You will receive clean, well-documented, production-ready code that you fully own
Reviews
3 reviews for this Gig
| (3) | ||
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
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Most relevant
J 
juliusthomas596
Repeat Client
Monaco
Again, Vitali keeps showing Professionalism, out of the box thinking and analyzing in depth before commencing, preventing misunderstandings and securing end result with accuracy as outlined in Spec. We are very proud to be able to work with Vitali and a true recommendation. 5 stars plus!
$2,000-$3,000
Price
11 days
Duration
Helpful?J juliusthomas596
Repeat Client
Monaco
Brilliant professional
$3,000-$4,000
Price
8 days
Duration
Helpful?C ciaranion
United Kingdom
Vitalii is a total professional. Proactive communication, deep understanding and a willingness to get the job done to the best of his ability. Would highly recommend.
$4,000 and above
Price
5 weeks
Duration
E 
Seller's Response
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
J juliusthomas596
Repeat Client
Monaco
Again, Vitali keeps showing Professionalism, out of the box thinking and analyzing in depth before commencing, preventing misunderstandings and securing end result with accuracy as outlined in Spec. We are very proud to be able to work with Vitali and a true recommendation. 5 stars plus!
$2,000-$3,000
Price
11 days
Duration
Helpful?J juliusthomas596
Repeat Client
Monaco
Brilliant professional
$3,000-$4,000
Price
8 days
Duration
Helpful?C ciaranion
United Kingdom
Vitalii is a total professional. Proactive communication, deep understanding and a willingness to get the job done to the best of his ability. Would highly recommend.
$4,000 and above
Price
5 weeks
Duration
E Seller's Response
Helpful?
