Apply on company website Bulgaria Hybrid Full-time

MMDSmart is hiring a Senior QA Engineer

Responsibilities

  • Evaluate business and technical requirements for web and backend systems, identifying potential architectural risks early to avoid production issues.
  • Serve as a system investigator by conducting in-depth reviews of multi-channel message pathways using logs, webhook data, and event tracking to pinpoint root causes of delivery or logic failures.
  • Develop and implement comprehensive end-to-end test plans that validate the entire message journey—from user action in the interface to final delivery confirmation—across various platforms.
  • Assist in performance testing initiatives using tools like Locust to assess message throughput, API responsiveness under load, and system behavior during high-volume channel operations.
  • Promote quality excellence in Agile workflows by engaging in design discussions and technical planning to emphasize testability, monitoring, and system robustness.
  • Collaborate with automation engineers to enhance existing Playwright-based test frameworks, improving coverage and reliability of critical user interface workflows in CI/CD pipelines.
  • Keep detailed technical records and root cause analysis reports to document complex defects and ensure organizational learning from critical incidents.

Work Arrangement

Hybrid — Bulgaria

Why do talents choose and stay at MMDSmart?

  • Access to mental health support, full medical coverage, and a sports card for personal wellness.
  • A positive work environment with approachable colleagues, strong mentorship, and regular recognition through bonuses and gifts.
  • Opportunities to grow through free training sessions, educational events, and English lessons with native speakers.
  • A culture that supports professional advancement in a nurturing and collaborative setting.
  • Flexible work options—remote, on-site, or hybrid—along with team-building experiences to support work-life balance.

Equal-Opportunity Employment

Committed to building a diverse and inclusive workplace, all qualified candidates are considered equally regardless of race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

Other

Medical insurance and sports card benefits are available only to employees based in Bulgaria.

Required Skills
GrafanaPlaywright
Job Details
Location Bulgaria
Work mode Hybrid
Employment Full-time
Department Research & Development
Category QA & Testing
Posted 2 months ago
Application On company website
About company
MMDSmart logo

Since 2007, MMDSmart has been making every message, every call, and every customer connection count. We built the global telco infrastructure that carriers and enterprises depend on, and the AI-powered engagement tools that help businesses turn omnichannel communication into measurable results.

From wholesale connectivity across 190+ countries to customer engagement at any scale, everything we do runs on the same conviction: technology works best when the people behind it genuinely care.

MMDSmart is a global cloud communications company that provides wholesale voice and SMS connectivity for carriers and a CPaaS messaging platform, MessageWhiz, for enterprises. We help businesses in 100+ countries communicate with their customers reliably and at scale.

All jobs at MMDSmart Visit website