Senior Firmware Validation Engineer

Langham Recruitment; California (MO); On-site; USD 110,000 - 170,000; Full time

Job summary

Langham Recruitment is seeking a Senior Firmware Validation Engineer to validate advanced optical modules. You’ll create validation plans, write and automate firmware tests, and work closely with design teams to resolve defects and improve product architecture.

You will bring 5+ years of firmware validation or embedded software experience, with strong Python skills and knowledge of C/C++. Expect hands-on debugging, lab testing, and collaboration across firmware, hardware, and optical subsystems.

Qualifications

• 5+ years in firmware validation, embedded software or related roles.
• Bachelor’s degree in Electrical Engineering, Computer Engineering or related field.
• Proficiency in Python scripting; working knowledge of C/C++ for firmware contributions.
• Hands-on experience with hardware-in-the-loop validation and lab instrumentation.
• Ability to design automated test environments for hardware/firmware interactions.

Responsibilities

• Develop test strategy and validation plans from product requirements.
• Collaborate with design teams to identify defects and drive fixes.
• Write and optimize firmware test cases and automate tests with Python.
• Lead cross-disciplinary debugging across firmware, hardware, and optics.

Skills

Firmware validation

Embedded software

Python scripting

C/C++

Automation design

HIL testing

Education

Bachelor's in Electrical/Computer Engineering

Tools

Oscilloscopes

Optical spectrum analyzers

BERT equipment

Lab instrumentation

STM32 microcontrollers

Job description

We are looking for a Senior Firmware Validation Engineer who brings a builder’s mindset to the validation process. In this role, you’ll be responsible for ensuring the reliability and performance of advanced optical modules through rigorous testing and validation.

Beyond identifying issues, you’ll also have the opportunity to contribute directly to firmware development — collaborating with design teams to resolve bugs, refine functionality, and help shape product architecture. This position is ideal for a validation expert who enjoys hands‑on debugging while continuing to develop and apply their coding skills.

Key Responsibilities

• Test Strategy & Planning: Review product requirements and functional specifications to create comprehensive validation plans and detailed firmware test cases.
• Firmware Development Support: Work alongside design engineers to write and optimize firmware, resolve defects, and contribute new features for optical control systems.
• Automation Frameworks: Design and implement advanced Python-based test automation frameworks to validate complex system requirements.
• Cross-Disciplinary Debugging: Lead root‑cause investigations across firmware, hardware, and optical subsystems to identify and resolve issues.

Candidate Profile

• Experience: 5+ years in firmware validation, embedded software development, or related roles.
• Education: Bachelor’s degree in Electrical Engineering, Computer Engineering, or a related field.
• Programming Expertise: Advanced Python scripting skills for automation and testing; working knowledge of C/C++ for firmware development contributions.
• Lab & Hardware Testing: Practical experience with hardware-in-the-loop (HIL) validation and lab instrumentation including oscilloscopes, optical spectrum analyzers, and BERT equipment.
• Automation Experience: Proven ability to design and build automated test environments to validate hardware and firmware interactions.

Preferred Qualifications

• Familiarity with Silicon Photonics or optical transceiver technologies.
• Experience working with STM32 microcontrollers or similar embedded platforms.