Software Development Engineer In Test

Software Development Engineer in Test (SDET)

Position Title: Software Development Engineer in Test (SDET)

Experience: 3+ years

Location: Guadalajara, Mexico (Hybrid)

Industry: Media & Entertainment

About the Role

We are looking for a Software Development Engineer in Test (SDET) focused on modern web applications with deep expertise in software development, modern programming practices, BDD-driven methodologies, AWS, UI Testing, RESTful APIs, AI productivity tools, and QA methodologies to join our engineering team. You will design and own front-end automation frameworks and CI/CD quality gates, which will require an expert level of programming knowledge. You will be a key part of the scrum team, leading QA decisions for front-end automation. You will partner closely with the development team to shape the testing, define the UI Automation expectations, own integration testing, and drive shift-left practices while mentoring others in this practice. We value strong automation skills over expertise in any specific language.

We are rebuilding a legacy system into a modern, scalable platform, REST APIs, and cloud-native architecture.

This role is ideal for a highly motivated engineer who thrives in small, dynamic teams and takes ownership of problems—designing, developing, and executing QA automation solutions without waiting for step-by-step instructions.

Key Responsibilities

• Design, develop, and maintain automated test systems for UI testing
• Adopt a BDD-driven approach for selective, high-value business-readable scenarios that enable clarity between Product and Engineering.
• Write, execute, and automate test plans that cover UI validation, security practices, device compatibility, and performance testing.
• Collaborate with other fron-tend engineers ensuring cohesive end-to-end testing.
• Lead test data strategy for front-end services and implement self-service utilities that the UI teams can reuse.
• Participate in sprint planning, design reviews, and product discussions. Advocate for testability and quality.
• Investigate and debug issues, conduct root cause analysis.
• Research and review test productivity tools and libraries, making recommendations to improve the overall productivity of the team.
• Champion QA best practices with the team.

Required Experience

• 3+ years in software test engineering including 1+ years creating and maintaining test automation frameworks for UI testing.
• Expert ability in UI automation (Playwright, Cypress, etc.).
• Proven strong coding experience in at least one or more programming languages.
• Ability to write tests using a BDD framework (e.g., Behave).
• Solid grasp of software engineering fundamentals, design patterns, and best practices.
• Solid CI/CD experience (Jenkins, Git Hub Actions, etc.) and Git best practices.
• Comfort with cloud and containers (AWS, Docker) and with databases such as SQL and No SQL.
• Comfort with security best practices and testing tools such as OWASP ZAP, RESTler, etc.
• Proven analytical and problem-solving skills with a demonstrated ability to work both independently and in a team environment
• Comfortable working in Agile/Scrum teams, using tools like JIRA and Confluence.
• Proficiency in leveraging and evaluating AI-assisted coding tools (e.g., Git Hub Copilot, Open AI Codex, Claude Code) to accelerate development, improve code quality, and enhance productivity.

Preferred Qualifications

• Prior experience in the media & entertainment industry.
• Strong Python coding skills.
• Production experience with React/Next.js (or Angular/Vue) and modern state/data layers (Redux/RTK Query, React Query, SWR).
• Comfortable validating API behavior and event/message flows that affect the UI
• Knowledge of performance testing tools and practices.
• Knowledge of messaging architecture and protocols (Rabbit MQ, Kafka, NATS, etc.)
• Knowledge of Postman for basic API testing

Soft Skills

• Strong ownership mindset with the ability to define and drive quality strategy, not just execution.
• Excellent communication and collaboration skills, especially in cross-functional Agile teams.
• Candor in communication even when things are off-track. Surface risks early, owns mistakes, and helps create a clear path to success when things go wrong.
• Comfortable mentoring junior engineers and influencing engineering culture.
• Ability to understand the big picture and prioritize work accordingly.
• Systems thinking: Understand service boundaries, contracts, and data flows. Anticipates