We are looking for a Senior Test Software Engineer II to design, develop, and maintain automated test systems for embedded hardware and firmware. In this role, you’ll work closely with embedded software, hardware, and systems engineers to ensure our products are reliable, robust, and production-ready. You’ll own test infrastructure from low-level hardware validation through system-level and regression testing.
This role is ideal for someone who enjoys building test frameworks, working close to the hardware, and improving product quality through automation and thoughtful test design.
JOB DUTIES AND RESPONSIBILITIES
- Design and implement automated test software for embedded systems
- Develop test frameworks for unit, integration, hardware-in-the-loop (HIL), and system-level testing
- Write test code in C/C++, Python, or other scripting languages to validate firmware and hardware behavior
- Interface with embedded targets using UART, SPI, I2C, CAN, Ethernet, JTAG, and other protocols
- Collaborate with firmware and hardware teams to define test requirements and acceptance criteria
- Debug failures across software, firmware, and hardware layers
- Integrate tests into CI/CD pipelines and support regression testing
- Create and maintain test documentation, reports, and metrics
- Continuously improve test coverage, reliability, and execution time
JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS
- Bachelor of Science (BS) or Master of Science (MS) degree in Computer Science, Electrical Engineering, or Computer Engineering.
- Minimum of 6 years of industry experience in software development.
- Strong experience with embedded systems and low-level software.
- Proficiency in C/C++ and/or Python.
- Experience developing automated test software, not just manual testing.
- Familiarity with RTOS or bare-metal systems.
- Experience debugging using oscilloscopes, logic analyzers, or JTAG/debug probes.
- Solid understanding of software testing principles and test automation best practices.
PREFERRED EXPERIENCE
- Experience with HIL/SIL testing or custom test rigs.
- Familiarity with CI systems (GitHub Actions, Jenkins, GitLab CI, etc.)
- Experience testing safety-critical or high-reliability systems.
- Knowledge of Linux-based embedded systems.
- Exposure to aerospace, automotive, robotics, or industrial embedded products.
Skills Required
- Bachelor or Master degree in Computer Science, Electrical Engineering, or Computer Engineering
- Minimum of 6 years of industry experience in software development
- Strong experience with embedded systems and low-level software
- Proficiency in C, C++, and/or Python
- Experience developing automated test software (not just manual testing)
- Familiarity with RTOS or bare-metal systems
- Experience debugging using oscilloscopes, logic analyzers, or JTAG/debug probes
- Solid understanding of software testing principles and test automation best practices
- Experience with HIL/SIL testing or custom test rigs
- Familiarity with CI systems (GitHub Actions, Jenkins, GitLab CI, etc.)
- Experience testing safety-critical or high-reliability systems
- Knowledge of Linux-based embedded systems
- Exposure to aerospace, automotive, robotics, or industrial embedded products
CesiumAstro Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about CesiumAstro and has not been reviewed or approved by CesiumAstro.
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Healthcare Strength — Health coverage includes medical, dental, vision, life and disability insurance, plus FSAs and mental health benefits. Feedback suggests the health package is comprehensive for a growth-stage aerospace firm.
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Retirement Support — Offerings include a 401(k) with company matching and other retirement-plan elements. Feedback suggests core retirement mechanisms are in place alongside standard financial benefits.
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Leave & Time Off Breadth — Generous PTO, paid holidays, paid sick days, and bereavement leave are included. Feedback suggests time-off options are broad on paper across multiple leave types.
CesiumAstro Insights
What We Do
We build high-throughput, plug-and-play phased array communication payloads for space and airborne platforms. CesiumAstro’s full-stack, multi-mission hardware and software products enable a diverse range of commercial and defense objectives. Full-system engineering design is at the heart of every CesiumAstro product. We deliver high-performance solutions under rapid development timelines.
Why Work With Us
At CesiumAstro, we’re a team. We’re passionate, respectful, and determined colleagues ready to help at a moment’s notice. We’re mentors excited to enable our peers with the knowledge they need to succeed. Together, we’re visionaries committing to building memories that will last a lifetime.
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