{"id":4158727,"url":"https://alion.io/job/stored-energy-systems-software-development-engineer-in-test","title":"Software Development Engineer in Test","company":{"id":2285000,"name":"Stored Energy Systems","domain":"sens-usa.com","url":"https://alion.io/company/sens-usa","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"ADP","truth_index":{"grade":"B","score":83,"open_postings":3,"ghost_share":0,"stale_share":0.667,"repost_share":0,"time_to_fill_p50_days":23,"computed_at":"2026-11-12T10:38:37Z"}},"role":"QA","role_family":"QA","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Longmont, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":103000,"max":146000,"currency":"USD","period":"year","gross":null,"usd_annual":146000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Bash","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"Cypress","optional":false},{"name":"GitHub","optional":false},{"name":"Java","optional":false},{"name":"Jira","optional":false},{"name":"Playwright","optional":false},{"name":"PowerShell","optional":false},{"name":"Python","optional":false},{"name":"Selenium","optional":false},{"name":"Windows","optional":false},{"name":"YouTrack","optional":false},{"name":".NET","optional":true},{"name":"Blazor","optional":true},{"name":"Entity Framework Core","optional":true},{"name":"Go","optional":true},{"name":"Grafana","optional":true},{"name":"IEEE 1547","optional":true},{"name":"Prometheus","optional":true},{"name":"Rest API","optional":true},{"name":"SQL","optional":true}],"status":"live","first_seen_at":"2026-11-12T09:14:00Z","employer_posted_date":"2026-11-12","last_verified_at":"2026-11-12T11:26:15Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Who We Are\nStored Energy Systems (SENS) is an award-winning manufacturer of premium quality power conversion products located in Longmont, CO. In business for over 50 years, SENS is the market leader with a proven track record of providing highly reliable battery chargers, DC power systems, and related products to industrial markets. For more information on our company please see our web site at www.sens-usa.com.\nView the SENS Product Catalog\nSummary\nWe 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.\nExperience 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.\nResponsibilities\nBuild an automation framework to test code being released to production.\nContribute design and development of an Automated Test Framework used to verify Charger Products and Solution functions.\nCollaborate with the Engineering team to identify Product Test Case requirements.\nCollaborate in project planning and prioritization for Test Plan creation, design, implementation, and execution phases.\nDesign and develop Test Cases and Test Suites corresponding to Test Plan requirements that meet hardware and firmware specifications, and quality standards.\nMonitor and report on automated test coverage to stakeholders.\nRequired Qualifications\nBachelor’s degree in Computer Science, Electrical Engineering, Computer Engineering, or related degree. \n5+ years of experience in an SDET or Software Engineering role.\nExperience with HTTP, TCP-IP and UDP protocols.\nSoftware EngineeringExperience with UI testing tools such as Playwright, Cypress, Selenium, TestComplete or similar.\nExperience testing Web and Desktop Applications.\nProficient with one or more Object Oriented languages such as C# or Java.\nProficient in developing and deploying applications on both Linux and Windows platforms.\nExperience with scripting languages such as Bash, PowerShell, Python.\nExperience with Source Code repositories such as GitHub.\nExperience conducting code reviews and provide feedback to ensure code quality and adherence to best practices.\nAbility to build and maintain a continuous deployment (CD) pipeline on hardware products.\nStrong 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.\n\nTest EngineeringExperience building out all or parts of an Automated Test Framework.\nExperience with Test Plan development and Product Validation.\nExperience testing the integration of software and hardware devices\nProject Process and PlanningExperience with Agile methodologies and project planning.\nPractical knowledge of issue-tracking project management software tools such as Jira, YouTrack, etc.\n\nTeam Interaction and CommunicationAbility to multi-task in a small company environment.\nExcellent problem-solving, decision-making, communication (written and verbal), and interpersonal skills for articulating technical approaches and progress to both technical and non-technical audiences.\nFlexible team player who actively establishes and maintains effective working relationships with company management and co-workers, suppliers, and occasionally with customers.\n\nPreferred Qualifications\nExperience with .NET/.NET Core frameworks.\nExperience with Entity Framework.\nExperience with Test Results report creation.\nExperience with Performance and Stress testing software/hardware integrations.\nExperience with HTML and DOM structure.\nExperience working with a development team on medium-to-large applications (web server, persistence, asynchronous distributed systems, etc).\nExperience with front-end development using .NET Blazor or other Web UI technologies.\nFamiliar with User Experience (UX) concepts and design.\nExperience with Relational Databases, schema design, SQL commands to create, store, retrieve, and modify data in a database.\nExperience with RESTful API design and development.\nExperience with Observability tools such as Grafana, Prometheus, etc.\nExperience with CAN bus and Modbus protocols.\nExperience working and communicating with test equipment such as voltmeters, data acquisition systems, load banks, and similar instruments.\nAbility to understand and troubleshoot test and measurement devices and their associated communication interfaces.\nAbility to read and understand electrical schematics and wiring diagrams.\nAutomated testing for compliance with standards is a plus (ex: IEEE1547, UL 2202). \nIn-depth knowledge of critical power genset backup, charger/battery systems or battery monitoring.\nLocation: This position is located in Longmont, CO and is an onsite position.\nBase Compensation: $103,000 - $146,000 is the projected range of annual base salary for this role depending on the candidate’s overall qualifications and experience.\nBonus: This position is eligible for an annual bonus based on individual and company performance.\nClosing Date: December 4th. While we expect to keep the position open through this date, the posting may be extended or closed early based on applicant volume and hiring needs.\nOnsite Perks\nFree gym with 24/7 access\nFree Electric Vehicle charging\nBreakfast and Lunch Café\nAfter hours Grab & Go snacks\nBasketball court\nWalking paths\nBenefits\nPaid Time Off\nPaid holidays\nMedical insurance\nDental insurance\nVision insurance\nShort-term and long-term disability\nLife insurance\n401(k) plan with immediate vesting\nEmployee referral program\nTuition reimbursement\nProfessional development \nAt SENS, our culture is rooted in a set of core values that reflect who we are and how we work. In a recent 2025 poll, our employees identified the values that best define us: “Innovative”, “Respectful”, “Inviting”, “Flexible”, “Collaborative”, and “Growth Driven”. Our team describes us as a dynamic, forward-thinking company where everyone has the opportunity to thrive.\nWe pride ourselves on being an equal opportunity employer, fully dedicated to fostering inclusion and diversity. We welcome all applicants, regardless of race, color, religion, sex, sexual orientation, gender identity, genetic information, national origin, age, disability, veteran status, or any other legally protected characteristic.\nWe hope you're interested in making a difference with us. 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