Senior SDET - Test Automation & Performance Engineering | Contract | Remote MX
Tech Holding4 hours ago
Responsibilities
- Design and evolve automated testing architecture across products and engineering teams.
- Build and maintain automated API, integration, contract, end-to-end, regression, and appropriate UI tests.
- Develop reusable test frameworks, fixtures, synthetic data, mocks, and environment strategies.
- Create and execute automated load, stress, spike, soak, scalability, degradation, and recovery tests with measurable thresholds.
- Model realistic workloads, concurrency, traffic patterns, data volumes, and dependency behavior.
- Integrate test suites into CI/CD pipelines and establish enforceable quality and release gates.
- Improve test observability, failure reporting, test-data reliability, and environment strategies.
- Debug failures across APIs, services, databases, infrastructure, and external integrations.
- Partner with performance, reliability, security, and engineering teams to validate scalability, security scenarios, and production readiness.
- Coach engineers on testability, automation, quality ownership, and defect prevention while reducing flaky tests, escaped defects, and manual release effort.
Requirements
- Strong experience in an SDET, Software Engineer in Test, Test Automation Engineer, Quality Engineer, or similar engineering-focused testing role.
- Strong software development and test automation skills.
- Experience testing APIs, distributed services, integrations, and cloud-based applications in AWS environments.
- Experience building automated API and integration test frameworks and integrating tests into CI/CD pipelines.
- Hands-on performance and scalability testing experience with tools such as k6, Gatling, Locust, JMeter, or equivalent.
- Experience designing realistic performance workloads and conducting load, stress, spike, soak, and scalability testing.
- Experience with automated quality gates, release criteria, contract testing, test-data management, synthetic data, fixtures, mocks, and reliable test environments.
- Experience using logs, metrics, traces, and observability tools to diagnose failures across applications, APIs, infrastructure, databases, and integrations.
- Experience identifying and reducing flaky automated tests.
- Nice-to-have experience includes high-scale SaaS or distributed platforms, resilience and recovery testing, infrastructure-as-code, ephemeral test environments, security-adjacent testing, identity, DNS, registries, security domains, and quality platforms used across multiple engineering teams.
Benefits
- Contract employment
- Remote position based in Mexico
About Tech Holding
Tech Holding is a full-service consulting firm that was founded on the premise of delivering predictable outcomes for our clients. Our founders and team members have industry experience and held senior positions in a wide variety of companies – from emerging startups to large Fortune 50 firms – and we have taken our combined experiences and developed a unique approach that is supported by the principles of deep expertise, integrity, transparency, and dependability.