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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior SIT Engineer (Firmware & Hardware) - **Company:** Hubbell - **Location:** Maryland Heights, MO, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Automation of Tests, Microsoft Azure, Software Bug Management, C Sharp (Programming Language), Databases, DevOps, Distributed Systems, Firmware, Design of User Interfaces, Hardware Design, Apache JMeter, Python (Programming Language), Log Analysis, Microsoft SQL Server, Windows Servers, Oracle Databases, Systems Development Life Cycle, RabbitMQ, Regression Testing, Software Reliability Testing, SoapUI, Software Systems, PL-SQL, System Integration Testing, Strategies of Testing, Transact-SQL, Extensible Markup Language (XML), Scripting, Performance Testing, Grafana, Hardware Testing, Backend, Information Technology, Apache Kafka, Hardware Infrastructure, Data Pipelines - **Published:** June 30, 2026 - **Apply:** https://diversityjobs.com/career/17427363/Senior-Sit-Engineer-Firmware-Hardware-Missouri-St-Louis ## About the Role * Minimum of a Bachelor's Degree in Computer Science, Engineering or related field * 5+ years of experience in System Integration Testing, with handson experience testing firmware and hardwarebased systems. * Strong understanding of embedded systems, firmware lifecycles, and hardwaresoftware integration. * Proven experience testing complex, distributed systems involving devices, firmware, backend services, and user interfaces. * Solid understanding of SDLC, SIT processes, and quality assurance best practices. * Experience working in Agile and/or DevOps environments. * Strong analytical and troubleshooting skills across firmware, hardware, and software layers. * Excellent verbal and written communication skills, with the ability to explain technical issues to nontechnical stakeholders. Technical Expertise (Preferred) * Firmware & Integration: Device communication, protocols, messaging, eventbased systems * Testing Tools: JMeter, SOAPUI, Kafka, Grafana, RabbitMQ * Languages & Scripting: C#, Python, JavaScript, XML * Databases: Databases: Oracle 19c/12c/11g, MS SQL Server, PL/SQL, T-SQL, * Platforms: Microsoft Azure, Windows Server environments * Other: System diagnostics, log analysis, defect management, performance and reliability testing ## Description The Senior SIT Engineer (Firmware & Hardware) is responsible for leading system integration testing of complex solutions involving firmware, hardware devices, and supporting software systems. This role ensures endtoend quality, reliability, performance, and interoperability across the full System Development Life Cycle (SDLC). The engineer plays a critical role in promoting qualityfirst practices, mentoring team members, and driving continuous improvement within the Aclara software and product organization., * Lead and execute system integration testing (SIT) for solutions that include firmware, embedded systems, hardware components, and backend software. * Ensure adherence to qualityfirst practices across all SDLC phases, including requirements review, design validation, firmware testing, hardware integration, regression testing, performance testing, and release readiness. * Develop, review, and maintain systemlevel test strategies, test plans, test cases, and endtoend test scenarios, ensuring alignment with defined acceptance criteria. * Validate firmware and hardware interoperability with applications, APIs, messaging, and data pipelines. * Identify, analyze, and mitigate integration, performance, reliability, and scalability risks across hardwarefirmwaresoftware boundaries. * Evaluate new products, firmware releases, hardware revisions, and processes to continuously improve the reliability and robustness of company solutions. * Drive rootcause analysis of systemlevel defects, including issues spanning firmware, hardware, and software layers. * Champion continuous improvement by enhancing SIT practices, tools, environments, and automation approaches across teams. * Promote best practices and help establish a culture of excellence and accountability within the Aclara engineering and quality organization. * Communicate complex technical and quality topics clearly to engineers, product owners, business leaders, and customers. * Participate in and influence release readiness, quality gates, and go/nogo decisions, providing objective quality assessments and risk visibility. * Mentor junior and midlevel SIT engineers and provide guidance on firmware and hardware testing best practices. ## Related Videos - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [More efficient software for more efficient microchips](https://www.wearedevelopers.com/videos/1164-more-efficient-software-for-more-efficient-microchips) - [DevOps Maturity Check – a way to balance autonomy and alignment](https://www.wearedevelopers.com/videos/58-devops-maturity-check-a-way-to-balance-autonomy-and-alignment) - [Testing .NET applications a Tool box for every developer](https://www.wearedevelopers.com/videos/704-testing-net-applications-a-tool-box-for-every-developer) - [SMART Test Automation - the experience of legacy transformation](https://www.wearedevelopers.com/videos/100215-smart-test-automation-the-experience-of-legacy-transformation) - [#90DaysOfDevOps - The DevOps Learning Journey](https://www.wearedevelopers.com/videos/548-90daysofdevops-the-devops-learning-journey) ## Related Articles - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [Should senior developers refuse interview coding challenges?](https://www.wearedevelopers.com/magazine/29-should-senior-developers-refuse-interview-coding-challenges) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [The Best Software Developer Blogs to Read](https://www.wearedevelopers.com/magazine/156-the-best-software-developer-blogs-to-read) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers)