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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
Enterprise Software for Digital Finance - Built for Scale, Security and Speed!
We build secure, scalable financial platforms - from digital banking ledgers and multi-currency wallets to on-chain settlement. One integration, designed to grow with your business.
Features:
- Customer and back-office web portals
- Customer onboarding, KYC/KYB and identity verification
- Passwordless authentication, MFA and role-based access control
- Double-entry ledger with immutable, balanced postings, segregated customer, platform, fee and settlement accounts, plus controlled reversals
- Virtual accounts with available and pending balances, transaction history and statements
- Deposits, withdrawals, payouts, payment gateways and crypto on/off-ramps
- SWIFT/SEPA adapters, unique payment references and real-time status updates
- Reconciliation workflows for duplicates, reversals and unmatched transactions, with operator tooling
- Funds holds, transaction approvals, refunds and returns
- Configurable fee tiers and FX conversions
- Idempotent money movement to prevent duplicate processing
- Tamper-evident audit logs with cryptographic validation
- Treasury, funding and settlement-account management
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. Custom requirements like scheduled payouts, custom transaction types, or compliance logic are welcomed. Just send your use case and I’ll provide a tailored offer.
Will I get the source code?
Yes. You will receive clean production-ready code that you can freely modify and use for your business
Reviews
4 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
B b3rnh4rd
Austria
Ongoing collaborationAmazing he is the best! Super professional on time and very fair! delivers excellent work
$2,500-$5,000
Price
3 weeks
Duration
Helpful?J 
juliusthomas596
Monaco
Ongoing collaborationAgain, 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!
$2,500-$5,000
Price
11 days
Duration
Helpful?J juliusthomas596
Monaco
Ongoing collaborationBrilliant professional
$2,500-$5,000
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.
$5,000-$10,000
Price
5 weeks
Duration
E 
Seller's Response
Helpful?
Reviews
4 reviews for this Gig
| (4) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
B b3rnh4rd
Austria
Ongoing collaborationAmazing he is the best! Super professional on time and very fair! delivers excellent work
$2,500-$5,000
Price
3 weeks
Duration
Helpful?J juliusthomas596
Monaco
Ongoing collaborationAgain, 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!
$2,500-$5,000
Price
11 days
Duration
Helpful?J juliusthomas596
Monaco
Ongoing collaborationBrilliant professional
$2,500-$5,000
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.
$5,000-$10,000
Price
5 weeks
Duration
E Seller's Response
Helpful?
