Software Development Engineer in Test (SDET)
RemoteMexico or Argentina
Job Summary
Champion an automation-first mindset by designing, building, and scaling automated test frameworks for APIs, UI, and end-to-end microservice validation using Node.js, Playwright, and related frameworks. Develop load and resilience testing suites with Grafana k6 to benchmark distributed systems, while integrating test execution and quality gates deeply into GitHub Actions to validate every commit, PR, and deployment. Collaborate closely with MCPs to design automated validation of Kafka event flows, service mesh routing, and inter-service contracts, embedding security testing and data validation checks into automation frameworks. Create test observability dashboards that expose quality metrics alongside performance and error budgets, and lead TDD adoption by embedding test scaffolds into developer workflows. Perform exploratory testing to supplement automation with contextual discovery and edge-case validation, driving a shared understanding of quality across environments with developers, SREs, and product managers.
Required Qualifications
- 3+ years of hands-on experience building and maintaining automated test frameworks for microservice and web applications
- Strong proficiency in Node.js, JavaScript/TypeScript, or equivalent modern language
- Demonstrated experience integrating tests into CI/CD systems
- Proven track record in load testing and performance analysis at scale
- Experience validating MCP integrations including: message brokers (Kafka), service meshes (Istio), and REST/gRPC endpoints
- Working knowledge of Playwright or similar browser automation frameworks
- Understanding of TDD, security testing, and DevSecOps principles
- Excellent debugging, observability, and root-cause analysis skills
- Bachelor's degree in Computer Science or equivalent practical experience
- Passion for driving automation-first culture and mentoring others in modern test engineering practices
Desired Qualifications
- Experience with Azure, Kubernetes, and containerized CI environments
- Familiarity with contract testing frameworks for validating MCP communication
- Experience with Grafana, Datadog, or similar platforms for system and test observability
- Familiarity with B2B, eCommerce, or fulfillment ecosystems
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