We are looking for a QA Engineer with a strong focus on backend/API testing, who will also support testing of iOS mobile applications and web applications/landing pages. The role includes close collaboration with developers, participation in grooming and release processes, and ensuring quality across backend services, APIs, payments, analytics, and client applications.

What you’ll do

- Functional testing of backend services, APIs, iOS apps, and web applications/landing pages

- API testing and validation of integrations, analytics events, and payment systems

- Design, execution, and maintenance of test cases, checklists, bug reports, and test documentation

- Impact analysis of changes (affected modules and scenarios)

- SQL-based validation of data in relational databases

- Testing payment systems and subscriptions

- Investigation of issues using logs and error analysis

- Participation in grooming, planning, and release activities with developers

- Running API automated tests in CI pipelines

- iOS testing on real devices and simulators, web testing using DevTools

What we’re looking for

Experience & working style

- 2+ years of commercial QA experience

- Ability to work in multitasking mode

- Flexibility in changing processes and test scenarios

- Active participation in team collaboration and grooming sessions

QA & testing skills

- Functional, UI/UX, localization, and analytics event testing

- Strong understanding of test design techniques

- Experience writing and maintaining test documentation

API & backend testing

- REST/HTTP fundamentals

- API testing with Postman/Newman or cURL, experience with OpenAPI/Swagger

- Authentication: Basic, Bearer token, OAuth2

- Strong understanding of client-server architecture

Databases (SQL / PostgreSQL)

- SQL queries: JOINs, aggregations, filtering and grouping

- Ability to validate backend data directly in DB

- Understanding of transactions

Payments & subscriptions

- Testing payment systems and subscription flows

- Apple/Google In-App Purchases

- Webhooks validation

- Edge cases: failed payments, insufficient funds, card blocking, refunds, chargebacks

Mobile & web

- iOS app testing (real devices and simulators), iOS Guidelines, TestFlight, Xcode, Firebase (Crashlytics, build delivery), IPA handling

- Web application and landing page testing using DevTools

Backend & tools

- Understanding of backend services in release processes, proxy tools, and test environment setup for iOS

- Tools: Postman, Git, Jira, Linux

- Log analysis: grep, awk, sed, tail -f, error tracing, stack traces

Automation

- API/integration test automation

- Running tests in CI (Jenkins / GitHub Actions)

Extra points if you have

Kafka, ClickHouse, observability tools, Docker/Kubernetes, CI/CD experience

What we offer

- A fast-growing environment with minimal bureaucracy

- Support for professional development

- 15 paid vacation days

- 15 paid sick days

- 5 paid days off

- Benefit bar