Full-stack QA Engineer

Project Description:
Data-collection platform spanning a worker mobile application, back office, and backend services.

Hard Skills / Must Have:
Functional, integration, API, and end-to-end testing across onboarding, task processing, data capture, review, earnings, and payouts
Testing TTL, expiry, reassignment, quotas, targeting, financial flows, privacy, consent, retention, and erasure
Experience testing financial flows, such as accruals, balances, batch payouts, and reconciliation with third-party payout providers; understanding of data privacy requirements, including consent management, data retention, and erasure
Experience testing integrations with internal and third-party services, such as authentication, CRM and push notifications, payout partners, LLM providers, and cloud storage (S3)
Strong understanding of microservices, event-driven and asynchronous architectures, including retries, timeouts, idempotency, duplicate events, and eventual consistency
REST/gRPC API testing and automation with Postman
Automated testing with Playwright, Cypress, Appium, or similar frameworks
Troubleshooting using logs, metrics, traces, databases, message queues, SQL/MySQL, Kafka, Grafana, Kibana, and CloudWatch
Ability to validate consistency across the mobile app (Kotlin), WebView, back office, backend APIs, and distributed services, and troubleshoot partial failures and partner/service outages
CI/CD, Docker, AWS, distributed-service testing, test strategy, release validation, and production issue analysis

Hard Skills / Nice to Have:
Experience testing media capture and upload on mobile devices (photo, voice, video, text), including device fragmentation, permissions, poor or unstable networks, resumable uploads, and on-device validation
Experience testing ML/LLM-powered features and validating AI-generated outputs
Responsibilities and Tasks:
Own test strategy, test planning, and release sign-off for the platform
Test mobile media capture and upload under real-world device and network conditions
Verify task lifecycle, quotas, submissions, review workflows, segmentation, and isolation
Validate financial, compliance, consent, erasure, and audit flows
Build and maintain end-to-end and API automation in CI, including load testing
Technology Stack: Kotlin, Playwright/Cypress/Appium, Postman, REST/gRPC APIs, SQL (MySQL), Kafka, Grafana, Kibana, AWS (S3, CloudWatch), Docker, CI/CD

We offer:
Attractive financial package
Challenging projects
Professional & career growth
Great atmosphere in a friendly small team