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Fintech App Developer (Independent)
Upwork • Freiberufler
Jan 2024 - Present • 2 yrs 4 mos
• Designed and developed fintech-ready mobile applications with secure backend services • Built ledger-based wallet and transaction systems • Integrated payment gateways and payout flows • Designed scalable APIs and admin dashboards • Helped founders turn fintech ideas into real, working MVPs