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# Senior Software Development Engineer - Test

- **Company:** Kellton Tech, Inc.
- **Location:** Reston, VA, United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Adobe Analytics, Testing (Software), Microsoft Excel, Web Accessibility, Application Programming Interfaces (APIs), Software Applications, JIRA, Automation of Tests, Browser Compatibility, C Sharp (Programming Language), Code Reuse, Data Files, Software Debugging, Revision Control Systems, Python (Programming Language), Microsoft SQL Server, Scrum Methodology, Systems Development Life Cycle, Release Management, Selenium, Software Engineering, Test Data, Test Execution Engine, Transact-SQL, Web Content Accessibility Guidelines, Web Applications, Windows Desktop, Extensible Markup Language (XML), Data Logging, Scripting, Browserstack, Git, Integration Tests, Bug Reporting, Playwright, Data Analytics, Restful APIs
- **Published:** October 30, 2026
- **Apply:** https://www.careerboard.com/us/en/find-jobs-in-United-States/-C9E29124F2A1DBB25B/

## About the Role

4-6+ years of professional experience in software test automation or QA engineering, with hands-on ownership of automation frameworks

Strong proficiency in Python, C# and XML Scripting for test automation, with clean, maintainable, reusable code

Hands-on experience building and maintaining UI test automation using Playwright (or comparable tools such as Selenium) for web applications

Experience automating Windows desktop applications using tools such as pywinauto, WinAppDriver, FlaUI, or similar

Experience logging, tracking, and reporting defects and test results using a defect or test management tool (eg, Jira)

Experience with cross-browser and cross-device test execution platforms (eg, BrowserStack) and diagnosing environment-specific failures

Solid working knowledge of Microsoft SQL Server, including writing T-SQL queries to set up, validate, and clean up test data

Experience with XML and structured data files, including generating and validating files for import/export and integration testing

Experience testing and automating RESTful APIs, and validating integrations between internal and external systems

Strong understanding of the software development lifecycle (SDLC), QA methodologies, and test design techniques (regression, functional, integration, data-driven)

Ability to analyze requirements and acceptance criteria, identify gaps, and translate them into complete, well-structured automated test coverage

Skill in debugging flaky or failing tests, performing root-cause analysis, and clearly reporting defects to development teams

Working knowledge of web accessibility (WCAG 2.1/2.2 AA) and an ability to include accessibility checks in automated test suites

Mentor QA engineers on automation best practices

Preferred Skills

Experience designing data-driven automation that covers multiple record-creation paths (eg, manual entry, file import, API) and multiple academic/award years

Experience with Excel-based test artifacts (eg, openpyxl) for test data generation and reporting

Exposure to CI/CD pipelines, automated test execution in build and release processes, and source control systems such as Git

Familiarity with Agile/Scrum methodologies and experience working within sprint-based release cycles

Experience supporting the migration or modernization of Legacy desktop applications to web, including re-baselining automation suites

Experience with performance, load, or security testing tools

Familiarity with automated accessibility tools and assistive technology testing

Strong written and verbal communication skills, with the ability to explain test results and quality risks to technical and non-technical stakeholders

Provide guidance to QA engineers in automated testing best practices.
Location Reston, VA, United States of America