Aniekan Sunday Udo

Backend Engineer | Fintech Specialist

Building live platforms that power real businesses from fintech systems handling loans, investments, and remittance to enterprise platforms managing complex operations. Multiple production systems running and serving users today.

About Me

Backend engineer with a deep specialization in fintech building live platforms that handle real money, complex workflows, and high-stakes operations. From loan origination and disbursement to investment portfolio management and international remittance, I architect systems where reliability, security, and compliance are non-negotiable.

My work spans payment gateway integrations (Flutterwave, Providus Bank, BankOne, Clear Junction), KYC/AML compliance pipelines (Smile Identity, BVN validation, credit bureaus), government payroll systems (IPPIS), and multi-role approval workflows alongside enterprise platforms for event management, real-time collaboration, and business operations.

Payment Gateway Integrations (Flutterwave, Providus, BankOne, Clear Junction)
KYC/AML Compliance Systems (Smile Identity, BVN, Credit Bureaus)
Government Payroll Integration (IPPIS Systems)

Based in Uyo, Nigeria

Available for remote work and collaboration

Technical Skills

Languages

TypeScript JavaScript Python

Frameworks & Runtime

NestJS Express.js Node.js React Vue 3

Databases & ORM

PostgreSQL MongoDB MySQL TypeORM Sequelize

Payment & Banking

Flutterwave Providus Bank BankOne Clear Junction FundsFlow

Identity & Compliance

Smile Identity (KYC) CRC/FirstCentral Ondato (AML) BVN Validation IPPIS Payroll

Infrastructure

Docker Redis BullMQ AWS S3 PM2 Grafana

Specializations

REST APIs WebSockets JWT/RBAC HMAC Auth Microservices Cron Jobs

Featured Projects

A selection of recent work, more available on request.

Dominion Merchant

Fintech / Loan Management
Live

A full-stack loan management platform actively serving government employees. The system automates the entire loan lifecycle from application and eligibility verification through multi-stage approvals to disbursement and repayment tracking. It integrates directly with banking APIs, government payroll systems (IPPIS), and credit bureaus to process hundreds of loan applications monthly.

Role: Full-Stack Developer (Backend-focused)
Node.js Express.js TypeScript PostgreSQL Sequelize React TailwindCSS BankOne API FundsFlow API IPPIS Payroll CRC/FirstCentral
Multi-stage approval workflow (Reviewer → Supervisor → Authorizer) with OTP verification
Banking integrations - BVN validation, account creation, fund disbursement via BankOne
Government payroll verification (IPPIS) with bulk upload support
Credit bureau lookups (CRC & FirstCentral) for eligibility scoring
100+ RESTful API endpoints with Swagger documentation
Enterprise security - JWT auth, request/response encryption, RBAC with 8 user roles, comprehensive audit logging
Impact: Reduced manual approval time by 70%, 99.9% uptime, zero compliance issues

FundsFlow

Fintech / Digital Lending

A full-stack digital lending platform built to power community-based lending for police officers. The system connects borrowers with lenders within organized communities, handling everything from loan eligibility verification through IPPIS payroll integration to disbursement, repayment tracking, and bad loan recovery - all within a multi-role ecosystem of super admins, community admins, lenders, and borrowers.

Role: Full-Stack Developer (Backend-focused)
NestJS TypeScript PostgreSQL TypeORM Vue 3 Quasar Flutterwave Providus Bank Docker WebSockets Firebase AWS S3 Grafana
Community-based lending ecosystem with configurable charges, member management, and approval workflows
Full loan lifecycle management - applications, eligibility checks, multi-level approvals, disbursement, repayment scheduling, and recovery
IPPIS payroll integration for automatic deduction-based eligibility and repayment
Multi-gateway payment system - Flutterwave (cards) + Providus Bank (transfers) with virtual accounts and webhook handling
Wallet system with balance tracking, beneficiary management, and BVN validation
Real-time communication via WebSockets, Firebase push notifications, and Brevo email/SMS
43+ database entities with 20+ modular NestJS modules
Impact: Production-grade platform with event-driven architecture, comprehensive audit trails, and bulk operations support

DMX

Fintech / Investment & Remittance

A full-stack fintech platform for investment management, international remittance, and digital wallet services. The system enables users to invest in diverse asset classes (equities, bonds, fixed income, mutual funds), transfer money internationally with real-time exchange rates, and manage multi-currency wallets - all with built-in KYC/AML regulatory compliance.

Role: Full-Stack Developer (Backend-focused)
NestJS 11 TypeScript PostgreSQL TypeORM Redis BullMQ JWT/Passport AWS S3 Docker Smile Identity Twilio SendGrid Clear Junction Ondato
Investment engine with automated quarterly dividend distributions and monthly interest calculations via scheduled cron jobs
Smart recommendations - personalized investment suggestions based on user risk profiles and portfolio diversification analysis
International remittance with real-time corridor exchange rates
Multi-currency wallet system with balance tracking, transaction limits, and PIN-secured operations
Full KYC/AML compliance pipeline - biometric liveness checks, BVN validation, document verification, anti-money laundering screening
Role-based admin dashboard with granular permissions, analytics, and user oversight
43 modules, 44 database entities, 53 services with Bull Board job queue monitoring
Impact: Production-grade architecture with RSA signature verification, brute-force protection, comprehensive audit logging

Evangelion

Enterprise / Event Management
Live

A comprehensive, multi-tiered event management and operations platform designed for large-scale organizational structures. Features hierarchical administration across multiple organizational levels, complete event lifecycle management from creation through execution to post-event analytics, and a real-time notification system keeping all stakeholders synchronized.

Role: Lead Backend Developer (with frontend collaboration)
NestJS TypeScript MongoDB React.js RESTful APIs WebSockets
Multi-tiered hierarchical administration with role-based access control across organizational levels
Full event lifecycle management - creation, scheduling, execution, and post-event analytics
Real-time notifications and activity tracking for all stakeholders
100+ RESTful API endpoints with comprehensive documentation
Impact: Serving multiple organizational units with streamlined event coordination and real-time operational oversight

Let's Connect

Ready to build something amazing together? I'm available for backend development - especially fintech - and always excited to tackle complex systems that need to be reliable, secure, and scalable.