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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Development Engineer in Test - **Company:** Stored Energy Systems, A Limited Liability Company - **Location:** Longmont, CO, United States - **Experience:** Expert - **Salary:** $103,000.0 - $146,000.0 - **Contract:** Permanent contract - **Skills:** HTML, Java (Programming Language), .NET Framework, Microsoft Windows, Test Suite, Agile Methodology, Software Applications, JIRA, Automation of Tests, Bash Shell, C Sharp (Programming Language), CAN Bus, Code Coverage, Software Quality, Code Review, Computer Programming, Databases, Computer Engineering, Continuous Delivery, Relational Databases, Linux, Distributed Systems, Entity Framework, Firmware, Github, Web Servers, Python (Programming Language), Project Management Software, Modbus, Object-Oriented Software Development, Windows PowerShell, Software Architecture, Prometheus, Webui, Selenium, Software Deployment, Software Engineering, SQL Databases, Systems Integration, TCP/IP, Test Case, Strategies of Testing, User Interface Testing, Scripting, .NET Core, Blazor, Grafana, Cypress (Programming Language), Backend, Testcomplete, Information Technology, Playwright, Front End Software Development, Restful APIs, SDET - **Published:** September 12, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=7d40937e4a6b15d3 ## About the Role * Bachelor's degree in Computer Science, Electrical Engineering, Computer Engineering, or related degree. * 5+ years of experience in an SDET or Software Engineering role. * Experience with HTTP, TCP-IP and UDP protocols. * Software Engineering + Experience with UI testing tools such as Playwright, Cypress, Selenium, TestComplete or similar. + Experience testing Web and Desktop Applications. + Proficient with one or more Object Oriented languages such as C# or Java. + Proficient in developing and deploying applications on both Linux and Windows platforms. + Experience with scripting languages such as Bash, PowerShell, Python. + Experience with Source Code repositories such as GitHub. + Experience conducting code reviews and provide feedback to ensure code quality and adherence to best practices. + Ability to build and maintain a continuous deployment (CD) pipeline on hardware products. + Strong AI literacy, with the ability to effectively use AI-assisted development and testing tools to improve test automation, accelerate defect analysis, increase test coverage, and enhance software quality. * Test Engineering + Experience building out all or parts of an Automated Test Framework. + Experience with Test Plan development and Product Validation. + Experience testing the integration of software and hardware devices + Project Process and Planning o Experience with Agile methodologies and project planning. o Practical knowledge of issue-tracking project management software tools such as Jira, YouTrack, etc. * Team Interaction and Communication + Ability to multi-task in a small company environment. + Excellent problem-solving, decision-making, communication (written and verbal), and interpersonal skills for articulating technical approaches and progress to both technical and non-technical audiences. + Flexible team player who actively establishes and maintains effective working relationships with company management and co-workers, suppliers, and occasionally with customers. Preferred Qualifications * Experience with .NET/.NET Core frameworks. * Experience with Entity Framework. * Experience with Test Results report creation. * Experience with Performance and Stress testing software/hardware integrations. * Experience with HTML and DOM structure. * Experience working with a development team on medium-to-large applications (web server, persistence, asynchronous distributed systems, etc). * Experience with front-end development using .NET Blazor or other Web UI technologies. * Familiar with User Experience (UX) concepts and design. * Experience with Relational Databases, schema design, SQL commands to create, store, retrieve, and modify data in a database. * Experience with RESTful API design and development. * Experience with Observability tools such as Grafana, Prometheus, etc. * Experience with CAN bus and Modbus protocols. * Experience working and communicating with test equipment such as voltmeters, data acquisition systems, load banks, and similar instruments. * Ability to understand and troubleshoot test and measurement devices and their associated communication interfaces. * Ability to read and understand electrical schematics and wiring diagrams. * Automated testing for compliance with standards is a plus (ex: IEEE1547, UL 2202). * In-depth knowledge of critical power genset backup, charger/battery systems or battery monitoring. ## Description We are looking for an experienced Software Development Engineer in Test (SDET) to join our engineering team. The SDET will be responsible for designing, developing, and maintaining an Automated Testing Framework from front-end to backend, ensuring the highest levels of reliability and performance of our line of Industrial Battery Charging products and solutions. Experience and skills in software development lifecycle, software architecture design, object-oriented design, programming, and understanding of software testing methodologies, are essential to the successful test and verification of SENS product line. Responsibilities * Build an automation framework to test code being released to production. * Contribute design and development of an Automated Test Framework used to verify Charger Products and Solution functions. * Collaborate with the Engineering team to identify Product Test Case requirements. * Collaborate in project planning and prioritization for Test Plan creation, design, implementation, and execution phases. * Design and develop Test Cases and Test Suites corresponding to Test Plan requirements that meet hardware and firmware specifications, and quality standards. * Monitor and report on automated test coverage to stakeholders. ## Related Videos - [SMART Test Automation - the experience of legacy transformation](https://www.wearedevelopers.com/videos/100215-smart-test-automation-the-experience-of-legacy-transformation) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [GitOps for the people](https://www.wearedevelopers.com/videos/461-gitops-for-the-people) - [Testing .NET applications a Tool box for every developer](https://www.wearedevelopers.com/videos/704-testing-net-applications-a-tool-box-for-every-developer) - [NoLoJS - Avoiding JavaScript Cruft with HTML and CSS - Aaron T. Grogg](https://www.wearedevelopers.com/videos/1806-nolojs-avoiding-javascript-cruft-with-html-and-css-aaron-t-grogg) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) ## Related Articles - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [What is Software Engineering?](https://www.wearedevelopers.com/magazine/289-what-is-software-engineering) - [Is Software Engineering Hard?](https://www.wearedevelopers.com/magazine/448-is-software-engineering-hard) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [Top Characteristics of a Software Engineer](https://www.wearedevelopers.com/magazine/166-top-characteristics-of-a-software-engineer)