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Chidinma Afogu

@chidinmaafogu

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Backend software engineer at 3Line building POS-to-ERP integrations and white-label POS solutions.

Nigeria

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At Redtech Limited, I built a Spring Boot 3 transaction management service for ISO 8583 card transactions and developed a TCP pass-through connecting POS terminals to payment aggregators. I cut payment processing time from 10 seconds to 3–5 seconds and eliminated duplicate transactions by fixing race conditions and enforcing idempotency.

At 3Line, I’m building ECR integrations between POS terminals and merchant ERP systems, developing white-label POS solutions, and leading a user interface redesign across POS devices. Previously, at Africa Prudential and VFD Tech, I worked on asynchronous processing, versioned REST APIs, and Java services for real-time transactions and transfers.

Experience

Work history, roles, and key accomplishments

Current

Senior POS Engineer

Current

3Line

Oct 2026 - Present (1 month)

Building electronic cash register (ECR) integrations that connect POS terminals to merchant ERP systems. Developing white-label POS solutions and leading a modern redesign of the user interface across the full range of POS devices.

POS ECR ERP Integration UI Redesign White Label Solutions

Software Engineer

Redtech Limited

Apr 2024 - Sep 2026 (2 years 5 months)

Reduced payment processing time from 10 seconds to 3–5 seconds by adding caching, rewriting slow queries and tuning PostgreSQL indexes. Eliminated duplicate transactions by fixing race conditions and enforcing idempotency across payment services.

Java Spring Boot PostgreSQL Caching Query Optimization Idempotency ISO 8583 Spring Integration OAuth JWT RBAC Docker Grafana Team Leadership

Backend Engineer

Africa Prudential

Jan 2022 - Feb 2024 (2 years 1 month)

Optimized heavy back-office operations by moving long-running tasks to asynchronous processing. Implemented Spring Batch jobs for bulk processing with retries and fault tolerance.

Java SpringBatch Asynchronous Processing Spring Security REST APIs Refactoring Test Coverage

Backend Engineer

VFD Tech

Mar 2021 - Jan 2022 (10 months)

Developed Java backend services for real-time transaction processing and management. Built and consumed third-party APIs for inward and outward transfers, expanding the platform's transaction capabilities.

Java REST APIs Third Party API Integration Transaction Processing High Availability Fault Tolerance