Senior Software Development Engineer in Test – AI-Assisted Testing

Tight Line

. Translate user stories and product requirements into clear test cases covering expected behaviour, edge cases and failure scenarios .

Posted 11/11/2026full-timeRemoteSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in QA and test automation, with a strong focus on designing meaningful tests, executing functional and regression tests, and utilizing AI agents for test optimization. Capable of mentoring junior colleagues while collaborating effectively with cross-functional teams to ensure quality and coverage.

Highest-signal resume keywords

5+ Years Experience In QATest Automation FrameworksHands-On Programming In PythonExperience With LLMs Or AI AgentsClear Written And Spoken English

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Hard Skills

Software TestingTest Case DesignFunctional TestingIntegration TestingRegression TestingDefect InvestigationAutomated TestingCI/CD IntegrationAPI TestingWeb Application Testing

Soft Skills

MentoringCollaborationCommunication

Tools & Technologies

Test Automation FrameworksCI/CD ToolsAI AgentsLLMs

Industry Keywords

Quality EngineeringSaaS PlatformsClient-Server BehaviourSecurity Considerations

Tech Stack

Tools & technologies

Python

About the role

Key responsibilities & impact

Translate user stories and product requirements into clear test cases covering expected behaviour, edge cases and failure scenarios
Execute functional, integration and regression tests across web applications, APIs and backend services
Investigate defects, document reproducible findings and work with developers to verify fixes
Prepare release certification reports summarising test results, coverage, outstanding defects and release risks
Write and maintain automated tests using the existing framework and contribute to CI/CD integration
Use LLMs and AI agents for test case generation, defect analysis, regression testing and test optimization
Review AI-generated outputs for accuracy, relevance and coverage
Collaborate with developers, product colleagues and stakeholders to clarify requirements and communicate quality concerns
Mentor junior colleagues through practical guidance, test reviews and knowledge sharing
Recommend improvements to testing framework, AI workflows and quality processes
Spend approximately 70% of the role on hands-on delivery and 30% mentoring junior colleagues; the position has no direct reports

Requirements

What you’ll need

5+ years of experience in QA, quality engineering or software development
Strong software testing and test automation experience
Ability to design meaningful tests from requirements and explain how test results inform release decisions
Hands-on programming experience in an object-oriented language; Python preferred
Practical experience with test automation frameworks and CI/CD tools
Strong understanding of web browsers, client-server behaviour, APIs and security considerations relevant to testing
Experience testing web-based products, SaaS platforms or comparable applications
Practical experience using LLMs or AI agents in testing, from professional work or a practical project
Ability to explain personal contribution, evaluate AI-generated results and identify limitations
Experience supporting or mentoring less experienced engineers
Clear written and spoken English for collaboration with an internationally distributed team
Ability to work consistently during the required US Pacific schedule
Previous production deployment of autonomous testing agents or agentic CI/CD pipelines is not required