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Strong Junior QA Engineer (TS)

3СommasTallinn, Estonia | Barcelona, Spain | WorldwideRemote, Onsite

Join our dynamic team to ensure the quality and performance of our software applications in the fast-paced world of crypto trading. This role is ideal for someone with a solid foundation in manual testing and a working knowledge of TypeScript, who is eager to grow into a QA Automation Engineer. You'll work closely with developers, analysts, and product managers, gaining experience with modern testing tools and practices.

Requirements:


  • 1+ years of experience in manual or mixed (manual + basic automation) software testing.
  • Basic to intermediate knowledge of TypeScript — comfortable reading and writing simple scripts.
  • Good understanding of client-server architecture.
  • Familiarity with REST APIs and WebSocket protocols.
  • Ability to read and analyze logs using tools like Kibana or Sentry.
  • Strong interest in test automation — previous exposure is a plus.
  • Understanding of key testing types: functional, integration, regression, performance.

Responsibilities:


  • Perform manual testing of web applications and backend services.
  • Collaborate with developers and product managers on test planning and acceptance criteria.
  • Write and maintain clear test cases and test plans.
  • Investigate issues using logs and system behavior; document and report bugs clearly.
  • Contribute to improving QA processes and team quality practices.
  • Support and gradually develop automation tests in TypeScript as part of our transition into automated QA.
  • Conduct API testing and exploratory testing for new and existing features.

Nice to Have:


  • Any experience writing automated tests for UI or APIs.
  • Familiarity with tools like Playwright, Cypress, or Postman.
  • Exposure to Kafka or load testing tools.
  • Previous experience with crypto trading platforms or financial systems.

What We Offer:


  • Growth-Driven Role: Opportunity to transition from manual QA to automation using modern TypeScript-based frameworks, with mentorship and real hands-on practice.
  • Remote-First Culture: Work with a globally distributed team, with access to offices in Barcelona and Tallinn.
  • High Ownership: Play an active role in improving product quality and shaping QA processes that scale.
  • People-First Environment: Join a mission-driven company with a culture of trust, learning, and transparency in the crypto domain.

Life at 3Сommas

3Commas is a complete crypto-asset management platform offering a unified access point and interface with the worlds' major crypto exchanges. Fully automated trade execution and portfolio management, supported by continuously evolving strategies, algorithms and risk management solutions. By simply connecting their exchange API to 3commas, users can instantly access a unified dashboard serving as the central hub for trading and portfolio management execution Social trading makes it possible for new users to realize profits within 10 minutes of connecting to 3commas Subscriptions: 3 levels of subscriptions: $30 - $50 - $100/month offering various number of trades and bot access Fee/Trade Users have the option to experience our “smart trade” features without subscribing but paying fees equal to 0.25% of profits Enterprise Partners: Revenue sharing of success-based fees charged in addition to monthly subscriptions For additional information please email: connect@3commas.io
Thrive Here & What We Value1. Flexible working conditions with priority to work from our offices in Barcelona or Tallinn (or Nicosia).2. Inhouse lessons for crypto-trading skills.3. Competitive salary offers based on your skills.4. Paid annual leave and paid sick leave.5. Generous paid time off policy, including annual leave and sick days.6. Opportunity to shape the future of institutional crypto asset management at a leading fintech company.7. Professional development budget for conferences, courses, and certifications.8. Inspiring leadership and knowledgeable, creative, genuinely kind colleagues.9. Comfortable and cozy office in the heart of Tallinn.10. Regular corporate events, both in and out of the office, including sports activities.

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