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Software Development Engineer in Test
3Commas.ioBarcelona, Cataluña, EspañaHace 4 días
Descripción del trabajoUnderstanding of the software development lifecycle and the QA role at each stage Familiarity with TDD, shift-left testing mindset, and the testing pyramid Strong prioritization skills in high-load environments Critical thinking and a proactive approach to improving QA / development workflows Experience with either Ruby or React Excellent communication skills (both online and in-person) Proficiency in English at B2 level or higher Proficient in TypeScript Hands-on experience with Playwright, Jest, or similar tools Experience with Page Object Model, mocking tools like msw or nock Solid skills in API testing : REST, WebSocket, optionally gRPC Deep knowledge of test design, test data isolation, and parallel execution Confident with Docker and solid understanding of Kubernetes Comfortable working with logs, alerts, and dashboards (Grafana, Kibana, Sentry) Experience working with Ruby (Rails) or React.js in a production environment Experience testing event-driven architectures (Kafka) Domain knowledge in crypto trading : order types, leverage, derivatives Familiarity with performance testing tools (e.g. k6) 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 in a globally distributed team, with optional access to physical offices in Barcelona and Tallinn High Ownership : Play a key role in improving product quality and help design QA processes that scale across the engineering organization People-First Environment : Join a mission-driven company in the crypto domain with a culture rooted in trust, learning, and transparency
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Join us as an SDET at 3Commas, where you'll become a key part of the engineering team behind one of the most advanced crypto trading platforms in the world. You'll work side by side with developers, design test architecture, write production-grade code, and drive quality across real-time systems that power automated and manual trading. You'll take full ownership of testing as part of a shared engineering responsibility and contribute to products built with Ruby, TypeScript, and React.
Responsibilities :
- Develop and maintain automated tests : unit, integration, and end-to-end
- Design test strategies with a strong emphasis on automation from the ground up
- Test real-time and asynchronous systems : WebSocket, Kafka, REST APIs
- Integrate test coverage into the CI / CD pipeline (GitLab, Docker, Kubernetes)
- Monitor stability, detect flakiness, and identify performance regressions
- Investigate bugs deeply : analyze issues on the code, infra, or test level
- Write post-mortems for incidents and implement improvements accordingly
- Participate in load and chaos testing initiatives
- Work with observability tools (Grafana, Kibana, Sentry, Kubernetes logs)
- Collaborate closely with developers, DevOps, and product managers
Requirements :
Testing & Automation
DevOps & Observability
Nice to Have :
What We Offer :
Seniority level
Seniority level
Entry level
Employment type
Employment type
Full-time
Job function
Job function
Engineering and Information Technology
Industries
Software Development
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Software Development Engineer • Barcelona, Cataluña, España
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