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Posted Mar 31, 2026

**Experienced Full Stack Software Development Engineer – Test, Quality Assurance and Automation Specialist – Austin, TX**

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At arenaflex, we're on a mission to revolutionize the way we deliver exceptional customer experiences. As a Software Development Engineer in Test (SDET), you'll play a pivotal role in driving end-to-end quality, architecting test frameworks, and ensuring the reliability of our systems powered by cutting-edge technologies like AWS and AI. If you're passionate about quality assurance fundamentals, advanced software development, and solving complex technical challenges, this role offers a unique opportunity to make a global impact. **About arenaflex** arenaflex is a global leader in e-commerce, committed to delivering the best possible experience for our customers. Our innovative approach to technology and customer service has enabled us to become one of the world's most trusted brands. As a Software Development Engineer in Test, you'll be part of a dynamic team that's dedicated to pushing the boundaries of what's possible in software development and quality assurance. **Key Responsibilities** As a Software Development Engineer in Test, you'll be responsible for: * Developing comprehensive test plans, test cases, and automation scripts to thoroughly validate product functionality * Collaborating with software engineers, product managers, and other stakeholders to understand requirements and design quality-focused testing approaches * Analyzing test results, identifying defects, and driving them to resolution * Designing and implementing scalable test frameworks and testing infrastructure from scratch * Developing production-quality automation code using modern software development practices * Architecting and building CI/CD pipeline integrations, enabling rapid yet safe deployments * Creating reusable test libraries and utilities that improve team efficiency * Implementing performance, load, and security testing solutions * Driving test-ability improvements in software architecture and design * Contributing to production code when needed, especially for test-ability improvements * Leveraging genAI technologies to enhance test framework capabilities **A Day in the Life** As a Software Development Engineer in Test, you'll work as a software engineer focused on quality, collaborating with development teams to design and implement robust test solutions. You'll write production-quality code, influence architecture decisions, and drive technical standards across the product lifecycle. You'll be part of a dynamic team that's passionate about delivering exceptional quality and customer experiences. **Essential Qualifications** To be successful in this role, you'll need: * 2+ years of non-internship professional software development testing experience * 1+ years of test automation frameworks and tools building experience * Experience programming with at least one modern language such as Java, C++, or C# including object-oriented design * Experience in penetration testing and exploitability-focused vulnerability assessment * Experience in platform-level security mitigations and hardening for Linux and Windows **Preferred Qualifications** While not required, the following qualifications will make you an even stronger candidate: * Knowledge of overall system architecture, scalability, reliability, and performance in a database environment * Experience with security in service-oriented architectures and web services * Experience building test automation frameworks and tools * Experience debugging, diagnosing, and troubleshooting complex, production software issues * Familiarity with AI/ML testing approaches **Work Environment and Company Culture** As a Software Development Engineer in Test at arenaflex, you'll be part of a dynamic team that's passionate about delivering exceptional quality and customer experiences. You'll work in a fast-paced, collaborative environment that's committed to innovation and continuous learning. Our inclusive culture empowers Amazonians to deliver the best results for our customers. **Compensation, Perks, and Benefits** arenaflex offers a comprehensive benefits package that includes: * Medical, Dental, and Vision Coverage * Maternity and Parental Leave Options * Paid Time Off (PTO) * 401(k) Plan **Career Growth Opportunities and Learning Benefits** As a Software Development Engineer in Test at arenaflex, you'll have opportunities to grow and develop your skills through: * Continuous learning and professional development programs * Mentorship and coaching from experienced engineers * Opportunities to work on high-impact projects and contribute to the development of our systems * Collaborative environment that encourages innovation and experimentation **How to Apply** If you're passionate about quality assurance fundamentals, advanced software development, and solving complex technical challenges, we encourage you to apply for this exciting opportunity. Please submit your resume and a cover letter that highlights your experience and qualifications. We can't wait to hear from you! **Apply Now**