Sr. SDET

Subway•Shelton, CT

16h

About The Position

The Senior Software Development Engineer in Test (Sr. SDET) is responsible for designing and building robust automated testing solutions that ensure the quality, reliability, and scalability of software systems. This role applies advanced software engineering skills to quality challenges, embedding automation and testing throughout the development lifecycle. The Sr. SDET operates with a high degree of autonomy, owns test strategy for complex systems, and partners closely with software engineering, product, and platform teams to deliver high-quality solutions.

Requirements

Strong software development experience with deep focus on test automation
Proficiency in one or more programming languages (e.g., Java, JavaScript, Python, C#)
Extensive experience with test automation frameworks and tools (e.g., Cypress, Playwright, Selenium, REST-assured, Postman, similar)
Strong understanding of REST APIs, microservices architecture, and distributed systems
Experience building and maintaining automated tests within CI/CD pipelines
Familiarity with cloud-based environments (AWS, Azure, or GCP)
Strong analytical and troubleshooting skills
Ability to influence engineering teams and advocate for quality without formal authority
Excellent communication and cross-functional collaboration skills
Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience
6–9 years of experience in software testing, automation, or SDET roles
Proven experience owning and operating automated test solutions in production environments
Experience supporting complex, distributed, or customer-facing systems preferred

Responsibilities

Design, develop, and maintain scalable automated test frameworks for UI, API, and backend services
Serve as the quality and automation owner for assigned products, platforms, or service domains
Write and maintain production-quality test code using modern programming languages and frameworks
Define and implement effective test strategies across functional, integration, regression, and end-to-end testing
Integrate automated tests into CI/CD pipelines to support continuous testing and rapid feedback
Perform advanced API, data-level, and contract testing to validate system integrations
Partner with software engineers and architects to improve system testability and design quality
Review requirements, designs, and code to identify quality risks early in the development process
Analyze test failures and defects, perform root-cause analysis, and drive preventative quality improvements
Support non-functional testing efforts, including performance, reliability, and scalability testing
Lead adoption of automation tools, testing standards, and best practices across teams
Mentor and provide technical guidance to SDETs and Quality Engineers through code reviews and collaboration
Participate in production issue analysis to strengthen upstream testing and reduce defect leakage