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Muhammed Ibrahim

@muhammedibrahim

Senior QA Engineer at Interswitch validating end-to-end payment workflows and investigating complex transaction failures.

Nigeria

Message

At Interswitch, I validate end-to-end payment workflows across backend services, APIs, databases, and external integrations. I investigate transaction failures across service boundaries and verify fixes for critical payment infrastructure.

At Red Acre Ltd. (via Symphony Solutions), I led backend testing for a NestJS microservices platform and worked with engineers to investigate performance bottlenecks. I also mentored junior SDETs and QA engineers on testing tools, troubleshooting, and test design.

At Accelerator App, I contributed to a Node.js and GraphQL Role-Based Access Control system and tested authorization across API workflows backed by MongoDB. Earlier at Softcom Ltd., I tested the Eyowo payment application across Android, iOS, Web, and USSD, and led testing for UseForms.

Experience

Work history, roles, and key accomplishments

Current

Senior QA Engineer

Current

Interswitch

Sep 2024 - Present (2 years 2 months)

Quality assurance for payment and transaction-processing systems, covering backend services, APIs, integrations, and end-to-end transaction workflows. Investigates complex transaction failures and builds automated API tests in Postman.

API Testing Integration Testing Regression Testing Postman Payment Systems Transaction Testing Root Cause Investigation

Senior Software Development Engineer in Test

Red Acre Ltd. (via Symphony Solutions)

Jan 2023 - May 2024 (1 year 4 months)

Led backend testing for a NestJS microservices platform, ensuring comprehensive coverage across critical services and integrations. Mentored junior SDETs and QA engineers on testing tools and test design.

NestJS Microservices Backend Testing Testing Automation Mentorship Test Engineer

QA Engineer

Accelerator App

Apr 2021 - Apr 2024 (3 years)

Contributed to backend implementation of a Role-Based Access Control (RBAC) system in Node.js and GraphQL. Built and maintained API-level integration tests covering authorization rules and edge cases.

NodeJS GraphQL MongoDB RBAC API Testing Integration Testing

Software Test Analyst

Softcom Ltd.

Mar 2018 - Apr 2021 (3 years 1 month)

Key contributor to testing of the Eyowo payment application across Android, iOS, Web, and USSD platforms. Led testing for UseForms, managing a team responsible for a data-collection application used to gather over 500,000 data points.

Risk Based Testing Functional Testing Session Based Testing Jira Mobile Testing Web Testing USSD