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Senior QA Engineer

3 months ago
Serbia, Georgia, Bulgaria, Czech Republic, Poland
Full-time
Senior
QA Engineer
Quality Assurance and Testing
Agile CI/CD Docker Grafana JavaScript JMeter K6 Kubernetes Linux Locust Microservices Playwright Postman Pytest Python REST API TypeScript
Apply Now
MMDSmart

MMDSmart

MMDSmart provides enterprise communication services and platforms, including telecom VoIP, mobile messaging, and call center solutions, to businesses worldwide.

Communications Equipment
51-250
Founded 2007
View All Jobs 5

Description

  • Analyze business requirements and technical specifications for web interfaces and backend systems.
  • Investigate complex multi-channel message flows using platform logs, webhook payloads, and event traces to identify root causes of defects.
  • Design and execute end-to-end test strategies across the full message lifecycle, from UI actions through APIs and delivery confirmation.
  • Validate API, backend, and channel gateway behavior to ensure client-facing results match expected behavior.
  • Contribute to performance testing efforts for message throughput, API response times, and system resilience under load.
  • Participate in architectural reviews and Agile discussions to advocate for testability, observability, and system stability.
  • Support Playwright-based automation efforts and collaborate on improving coverage for critical UI flows.
  • Help ensure automated checks are reliable within the CI/CD pipeline.
  • Maintain technical documentation and RCA reports for complex and hard-to-reproduce bugs.

Requirements

  • 5+ years of software testing experience.
  • Strong understanding of web platform testing, including UI and backend.
  • Ability to debug logic defects across distributed flows.
  • Experience with REST API testing using Postman, curl, or similar tools.
  • Experience validating webhook and callback flows.
  • Understanding of channel-specific delivery logic.
  • Understanding of API automation using pytest, REST Assured, or similar tools.
  • Basic scripting ability in JavaScript, TypeScript, or Python for test tooling.
  • Experience working in Linux environments and reading server logs.
  • Familiarity with Docker or Kubernetes for local and staging environments.
  • Experience with Grafana or similar monitoring and dashboarding tools.
  • Experience with Playwright or a similar end-to-end testing framework is preferred.
  • Hands-on experience with Locust, k6, or JMeter is preferred.
  • Experience testing throughput under concurrent channel load is preferred.
  • Experience integrating tests into CI/CD pipelines is preferred.
  • Understanding of event-driven architecture patterns is preferred.
  • Familiarity with messaging provider APIs is preferred.
  • Understanding of SMS and chat platform delivery mechanics is preferred.

Benefits

  • Comprehensive medical insurance.
  • Access to mental health programs.
  • Sports card benefit for employees in Bulgaria.
  • Bonuses and corporate gifts.
  • Free educational events and courses.
  • English classes with native speakers.
  • Strong mentorship and a supportive environment for professional growth.
  • Remote, office-based, or hybrid working format options.

Interested in this position?

Apply directly on the company website

Apply Now

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