Samuel Inemesit Sylvester

Financial Systems Engineer • Fintech Infrastructure Architect

Lagos, Nigeria

speak@samuelsylvester.com

+234 810 236 5034

samuelsylvester.com

Professional Profile

Financial technology engineer specializing in the design and deployment of high-performance transaction systems, cryptocurrency infrastructure, and real-time payment pipelines.

Architect and builder of production-grade platforms enabling seamless conversion between digital assets and fiat currencies, with a strong emphasis on scalability, reliability, and low-latency processing.

Currently operating as an independent fintech developer, delivering backend systems, API infrastructures, and financial integrations for businesses and emerging market ecosystems.

Professional Experience

Independent Fintech Developer

2023 – Present

  • • Designed and deployed crypto-to-fiat settlement systems and financial APIs.
  • • Built scalable backend infrastructures supporting real-time transaction execution.
  • • Integrated third-party financial services and blockchain networks.
  • • Delivered fintech solutions for businesses across payments, wallets, and automation.

Tech Support Engineer — GTI Capital

Dec 2023 – Mar 2024

  • • Maintained system uptime and infrastructure stability.
  • • Implemented monitoring and backup strategies.
  • • Resolved system failures and improved reliability metrics.

Backend Developer — Zapcollect

Aug 2022

  • • Built escrow and payment processing systems.
  • • Integrated APIs and financial workflows.
  • • Developed backend systems using PHP and MySQL.

Deployed Systems

Fiato Merchant Engine

Crypto → fiat processing infrastructure for businesses.

https://fiato.io/samuelsignedit

Fiato Wallet Core

Multi-asset wallet infrastructure.

https://wallets.fiato.io/samuelsignedit

MoveWallet Network

Cross-border financial mobility system.

https://movewallet.io/samuelsignedit

RayexAI Interface

Conversational AI financial execution layer.

https://rayex.ai/samuelsignedit

Smsplux API Layer

OTP & SMS verification infrastructure.

https://smsplux.com/samuelsignedit

Technical Capabilities

Backend Engineering (PHP)
Financial API Integration
MySQL & Data Systems
System Architecture
Real-time Transactions
Blockchain Integrations

Education

University of Uyo — B.Sc (Ed) Industrial Technical Education (2021)
NYSC Completed (2023)