Сергій Veteran

QA-інженер, 80 000 UAH

Employment type:
full-time, part-time
Age:
40 years
City of residence:
Poltava
Ready to work:
Remote

Contact information

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Work experience

Quality assurance engineer

from 07.2025 to 09.2026 (1 year 3 months)
Franpos, Дистанційно (IT)

• Own end-to-end QA across a complex SaaS ecosystem covering POS, Back Office/Admin, e-commerce, online ordering, inventory,
payments, customer management, reporting, and booking.
• Validate business-critical POS and payment workflows across client applications, payment terminals, APIs, backend services, and
databases.
• Test Adyen and PAX payment integrations across the full payment lifecycle, including successful and failed transactions, declines,
refunds, voids, and edge cases.
• Investigate complex cross-layer defects by correlating UI behaviour, API responses, backend processing, and database data to identify
root causes.
• Perform web and mobile testing across Android and iOS applications using real devices and emulators, including Android Studio; conduct
cross-browser testing across Chrome, Edge, and Brave.
• Drive QA activities throughout the SDL

Quality assurance engineer

from 12.2021 to 09.2025 (3 years 10 months)
Tietoevry Create Ukraine (formerly Infopulse Ukraine), Дистанційно (IT)

• Tested a FinTech application for accountants across UI, API, database, integration, and end-to-end layers.
• Validated payroll, benefits, add-ons, and business-trip expense workflows, including calculation accuracy, currency conversions, and
accrual logic across different payment types and subtypes.
• Tested end-to-end integrations with third-party systems, including employee profile synchronization from an external HR platform and
time-tracking imports used for payroll calculations.
• Verified role-based access control (RBAC) for confidential financial and personal data.
• Inspected RabbitMQ message flows and payloads during integration testing, diagnostics, and defect investigation.
• Performed functional, cross-browser, UI/UX, security, API, and database testing, including CRUD validation.

Quality assurance engineer

from 10.2019 to 12.2021 (2 years 3 months)
Devart, Харків (IT)

• Performed manual testing of desktop applications for SQL Server, MySQL, Oracle, and PostgreSQL.
• Validated SQL query execution, database schemas, and schema/data comparison and synchronization functionality.
• Tested complex database objects including stored procedures, triggers, and views; monitored query execution plans and verified
database-related performance functionality.
• Verified code IntelliSense and code generation, data migration via import/export with large data volumes, and command-line interface
(CLI) functionality.

Військовослужбовець

from 08.2007 to 02.2019 (11 years 7 months)
Військова частина 3005 НГУ, Харків (Сили оборони)

Led personnel and operational activities, including staff training, discipline, duty performance, safety, and quality-control responsibilities.

Education

ХАДИ

Дорожньо-будівельний, Будівництва та експлуатації автомобільних доріг, Харків
Unfinished higher, from 2019 to 2023 (4 years)

Additional education and certificates

2019, 4 месяца

Knowledge and skills

  • Ручне тестування
  • SQL
  • Ведення документації
  • Неконфліктність
  • Написання bug reports
  • Адаптивність
  • Postman
  • Scrum
  • Написання тест-кейсів
  • TestRail
  • Організованість
  • Складання чеклістів
  • Jira
  • Дисциплінованість
  • Розробка SaaS-проєктів
  • Mobile application testing
  • Fintech
  • Робота з POS-терміналом
  • Ведення E-commerce проєктів
  • Work with the database
  • MS SQL Server
  • MySQL

Language proficiencies

  • Ukrainian — fluent
  • English — average

Additional information

QA Engineer with 7+ years of experience testing FinTech, POS, e-commerce, payment systems, and database development
tools. Strong hands-on experience in web, mobile, API, integration, end-to-end, and database testing, with solid SQL expertise and
experience validating complex business-critical workflows. Experienced in payment integrations including Adyen and PAX, and in
investigating cross-layer defects across UI, APIs, backend services, payment terminals, and databases.
CORE SKILLS
Testing: Functional, Exploratory, Smoke, Regression, Integration, System, End-to-End, UAT, Security, Usability, Compatibility, CrossBrowser, Cross-Platform
Test Design: Equivalence Partitioning, Boundary Value Analysis, State Transition Testing, Pairwise Testing, Error Guessing
API & Payments: Postman, Swagger, Adyen, PAX, payment lifecycle testing, request/response validation, business logic and errorhandling validation
Databases: SQL, SQL Server, MySQL, Oracle, PostgreSQL, CRUD, stored procedures, triggers, views, test data preparation
Mobile: Android, iOS, Android Studio, real devices, emulators, mobile POS applications
Tools & Process: Jira, Azure DevOps, TestRail, Redmine, Git, RabbitMQ, Agile/Scrum, SDLC, test planning, estimation, release validation
Languages: English - Intermediate

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