Create Alert

Senior SIT Engineer (Firmware & Hardware)

Apply now »

Date: Jun 29, 2026

Location: St. Louis, MO, US, 63146 Solon, OH, US, 44139

Company: Hubbell Incorporated

Job Overview

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 end‑to‑end quality, reliability, performance, and interoperability across the full System Development Life Cycle (SDLC). The engineer plays a critical role in promoting quality‑first practices, mentoring team members, and driving continuous improvement within the Aclara software and product organization.

#LI-SL1



A Day In The Life

  • Lead and execute system integration testing (SIT) for solutions that include firmware, embedded systems, hardware components, and backend software.
  • Ensure adherence to quality‑first 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 system‑level test strategies, test plans, test cases, and end‑to‑end 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 hardware‑firmware‑software boundaries.
  • Evaluate new products, firmware releases, hardware revisions, and processes to continuously improve the reliability and robustness of company solutions.
  • Drive root‑cause analysis of system‑level 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/no‑go decisions, providing objective quality assessments and risk visibility.
  • Mentor junior and mid‑level SIT engineers and provide guidance on firmware and hardware testing best practices.

 

What will help you thrive in this role?

Required Skills & Qualifications

  • Minimum of a Bachelor’s Degree in Computer Science, Engineering or related field
  • 5+ years of experience in System Integration Testing, with hands‑on experience testing firmware and hardware‑based systems.
  • Strong understanding of embedded systems, firmware lifecycles, and hardware‑software 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 non‑technical stakeholders.

Technical Expertise (Preferred)

  • Firmware & Integration: Device communication, protocols, messaging, event‑based 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

Hubbell Incorporated

 

Hubbell creates critical infrastructure solutions that power our customers, communities, people and the planet. Our company is strategically aligned around enabling grid modernization and electrification. As more products plug in to an aging grid, Hubbell solutions enable the transition to a more reliable, resilient and efficient energy infrastructure. Founded in 1888 our innovation has made us a leading global manufacturer of high quality electrical and utility solutions enabling customers to operate critical infrastructure reliably and efficiently.

 

The company operates in two segments. Hubbell Utility Solutions (HUS) enable the grid to conduct, communicate and control energy across utility applications and Hubbell Electrical Solutions (HES) are essential to managing power across a wide range of industries and applications. Our vertical market solutions can be applied to markets including Data Centers, Renewables, Commercial Buildings, Industrial, Telecom and Transportation. Supporting both of our business segments is our corporate and Hubbell Unified Business Solutions teams that provide consistent process, tools technologies across our businesses.

 

We are committed to operating sustainably and ethically while promoting an inclusive and supportive culture for our people to grow and develop in their careers. Our employees proudly work and serve our communities from our headquarters in Shelton, CT, across the United States and around the globe.

 

Hubbell Utility Solutions 

 

Hubbell Utility Solutions (HUS) enable the grid to conduct, communicate and control energy across utility applications. HUS provides the critical components that allow the grid to reliably transmit and distribute energy, as well as the communications and controls technologies to make the grid smarter and more flexible.

 

Hubbell Incorporated, its subsidiaries and affiliates, is an EO Employer AA: M/F/Veteran/Disability. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected veteran status, sexual orientation, gender identity or any other protected class.

 

The above summary of position responsibilities and requirements is not intended, and should not be construed, to be an exhaustive list of duties, skills, efforts, physical requirements, or working conditions associated with the position. It is intended to be an accurate reflection of those principal position elements essential for making decisions related to position performance, employee development, and compensation.

 


Nearest Major Market: St Louis
Job Segment: Testing, System Administrator, Embedded, Firmware, Computer Science, Technology