Software Engineer in Test
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-endDesign test strategies with a strong emphasis on automation from the ground upTest real-time and asynchronous systems: WebSocket, Kafka, REST APIsIntegrate test coverage into the CI/CD pipeline (GitLab, Docker, Kubernetes)Monitor stability, detect flakiness, and identify performance regressionsInvestigate bugs deeply: analyze issues on the code, infra, or test levelWrite post-mortems for incidents and implement improvements accordinglyParticipate in load and chaos testing initiativesWork with observability tools (Grafana, Kibana, Sentry, Kubernetes logs)Collaborate closely with developers, DevOps, and product managers
Requirements:
Understanding of the software development lifecycle and the QA role at each stageFamiliarity with TDD, shift-left testing mindset, and the testing pyramidStrong prioritization skills in high-load environmentsCritical thinking and a proactive approach to improving QA/development workflowsExperience with either Ruby or ReactExcellent communication skills (both online and in-person)Proficiency in English at B2 level or higher
Testing & Automation
Proficient in TypeScript Hands-on experience with Playwright, Jest, or similar toolsExperience with Page Object Model, mocking tools like msw or nockSolid skills in API testing: REST, WebSocket, optionally gRPCDeep knowledge of test design, test data isolation, and parallel execution
DevOps & Observability
Confident with Docker and solid understanding of KubernetesComfortable working with logs, alerts, and dashboards (Grafana, Kibana, Sentry)
Nice to Have:
Experience working with Ruby (Rails) or React.js in a production environmenExperience testing event-driven architectures (Kafka)Domain knowledge in crypto trading: order types, leverage, derivativesFamiliarity with performance testing tools (e.g. k6)
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 practiceRemote-First Culture: Work in a globally distributed team, with optional access to physical offices in Barcelona and TallinnHigh Ownership: Play a key role in improving product quality and help design QA processes that scale across the engineering organizationPeople-First Environment: Join a mission-driven company in the crypto domain with a culture rooted in trust, learning, and transparency
Apply Now
Apply Now
Responsibilities:
Develop and maintain automated tests: unit, integration, and end-to-endDesign test strategies with a strong emphasis on automation from the ground upTest real-time and asynchronous systems: WebSocket, Kafka, REST APIsIntegrate test coverage into the CI/CD pipeline (GitLab, Docker, Kubernetes)Monitor stability, detect flakiness, and identify performance regressionsInvestigate bugs deeply: analyze issues on the code, infra, or test levelWrite post-mortems for incidents and implement improvements accordinglyParticipate in load and chaos testing initiativesWork with observability tools (Grafana, Kibana, Sentry, Kubernetes logs)Collaborate closely with developers, DevOps, and product managers
Requirements:
Understanding of the software development lifecycle and the QA role at each stageFamiliarity with TDD, shift-left testing mindset, and the testing pyramidStrong prioritization skills in high-load environmentsCritical thinking and a proactive approach to improving QA/development workflowsExperience with either Ruby or ReactExcellent communication skills (both online and in-person)Proficiency in English at B2 level or higher
Testing & Automation
Proficient in TypeScript Hands-on experience with Playwright, Jest, or similar toolsExperience with Page Object Model, mocking tools like msw or nockSolid skills in API testing: REST, WebSocket, optionally gRPCDeep knowledge of test design, test data isolation, and parallel execution
DevOps & Observability
Confident with Docker and solid understanding of KubernetesComfortable working with logs, alerts, and dashboards (Grafana, Kibana, Sentry)
Nice to Have:
Experience working with Ruby (Rails) or React.js in a production environmenExperience testing event-driven architectures (Kafka)Domain knowledge in crypto trading: order types, leverage, derivativesFamiliarity with performance testing tools (e.g. k6)
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 practiceRemote-First Culture: Work in a globally distributed team, with optional access to physical offices in Barcelona and TallinnHigh Ownership: Play a key role in improving product quality and help design QA processes that scale across the engineering organizationPeople-First Environment: Join a mission-driven company in the crypto domain with a culture rooted in trust, learning, and transparency
Apply Now
Apply Now