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Maksim Ioffe

@maksimioffe

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QA Engineer at T1 who tested consumer lending microservices, REST APIs, and Kafka integrations.

Armenia

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At T1, I tested consumer lending microservices on a banking platform, checking loan calculations, application status transitions, and REST API contracts. I also verified Kafka events and used PostgreSQL queries to investigate data consistency during failures and retries.

At Ubuntu Quantum, I built the QA process from scratch as the sole QA engineer. I tested payments, player accounts, KYC flows, bonuses, and game integrations, and coordinated overlapping releases with development, design, marketing, and partner account managers.

Across an agricultural e-commerce marketplace and a medical analytics platform, I tested mobile, web, backend, and API behavior and investigated data issues with SQL. I’ve also maintained Java and Selenium UI tests, supported production investigations, and used AI assistants in daily QA work.

Experience

Work history, roles, and key accomplishments

QA Engineer (Backend / Microservices)

Dec 2025 - Aug 2026 (8 months)

Tested consumer lending microservices, REST APIs and service contracts using Postman and Swagger; verified loan calculations and application status transitions. Investigated defects using Kibana logs and Kubernetes environment checks; used PostgreSQL queries to verify data consistency during failures and retries.

Postman Swagger Kafka Kibana Kubernetes PostgreSQL REST APIs Microservices Test Case Design UAT

QA Engineer & Platform Operations

Ubuntu Quantum

Jun 2025 - Feb 2026 (8 months)

Built the QA process from scratch, covering test documentation, defect reporting, regression scope and release acceptance criteria agreed with the client. Tested deposits, withdrawals and payment provider integrations, including transaction states, declined and pending payments, limits and balance consistency.

Test documentation Defect Reporting Regression Testing Payment Testing KYC CMS Admin Panel Game Providers Release Coordination

QA Engineer (Mobile & Backend)

AgTech & E-commerce Marketplace

Jan 2024 - May 2025 (1 year 4 months)

Expanded testing responsibilities from native mobile apps to web and backend services, with a focus on financial services and lending modules. Tested iOS and Android builds on physical devices using TestFlight, APKs and Android Studio; intercepted and modified traffic with Charles Proxy.

Mobile Testing iOS Android TestFlight Apk Android Studio Charles Proxy REST APIs PostgreSQL Postman Swagger Chrome DevTools Kubernetes Kibana Java Selenium Figma Agile Scrum

QA Engineer / L3 Technical Support

MedTech Analytics & Data Platform

Oct 2022 - Dec 2023 (1 year 2 months)

Investigated medical reporting discrepancies and production incidents using PostgreSQL and Oracle SQL queries; verified data and calculation accuracy. Performed functional UI and REST API testing using Postman and Swagger, followed by regression testing before releases.