Job Description

Mission:
In ThreatMark, we score thousands of events per second under strict latency and availability SLAs. Our clients are major banks that rely on the product to protect their funds and fight fraud. We operate under regulations imposing high standards of security and data privacy.

Role Description:
As a Senior QA Engineer, your primary mission will be to ensure the quality of our product by driving a robust testing strategy, creating automated controls allowing for continuous deployment, and proving that customer requirements are fulfilled.

Responsibilities

• Leadership

  • Design testing strategy, communicate, and drive it on a daily basis
  • Prioritize quality roadmap
  • Educate engineers in practices to prevent bugs (e.g., sporadic code reviews with feedback)

• Daily Work

  • Shape requirements for new features to be specific, falsifiable, and reflect the needs
  • Improve tests suite by minimizing the number of end-to-end tests and shifting QA down to small proven, decoupled components (unit/integration tests)
  • Work on minimization of manual steps for the release process by writing automated GitLab pipelines
  • Conduct load testing, chaos testing, and contract testing
  • Challenge developed features by exploratory testing, comparing observations against defined requirements
  • Improve development experience with automation (e.g., linter configuration, build process)

Tech Stack

• Languages

  • Backend: Python3 (asyncio, fastapi, numpy, ONNX), Rust
  • Frontend: Kotlin (SDK for customers), Swift (SDK for customers), JavaScript + TypeScript (React + detection probe)

• Technologies

  • Storage: Redis/Dragonfly, AWS RDS, DynamoDB, Scylla
  • Orchestration: Kubernetes, Docker Compose, AWS Lambda
  • Infrastructure as Code (IaaC): Terraform (AWS), Ansible (on-premise)

Desired Profile

Qualifications:

• Must Have:

  • Production experience with high-level languages
  • Experience with web technologies and concepts (HTTP, REST)
  • Experience building testing pyramid (unit, integration, load, contract, chaos, etc.)
  • Experience with unit testing frameworks (e.g., pytest, nunit, junit) - we use pytest
  • Experience with UI testing (Selenium, Playwright, etc.)
  • Basic knowledge of architecture patterns (e.g., microservices)
  • User-level knowledge of Linux, Docker, and networking

• Nice to Have:

  • Active skill with relational databases
  • Microservice architecture knowledge
  • Experience with Pact contract tests framework
  • Experience with testing event-driven systems

Core Values:

• Extreme Ownership: Taking initiative, driving results, and passionately owning project outcomes
• Deep Understanding: Preference for deeply understanding topics and systems from first principles over opinions, guesses, and superficial knowledge
• Integrity: Consistently adhering to strong moral and ethical principles, acting with honesty, accountability, and transparency
• Collaboration: Building positive, efficient relationships, expressing in a precise and efficient way
• Innovation and Adaptability: Continuously seeking improvement, being open to new ideas, and making data-driven decisions