Firmware Design Engineer

hireneXus; Los Angeles (CA); On-site; USD 110,000 - 150,000; Full time

Job summary

hireneXus is seeking a Firmware Engineer to join our hardware-software integration team in Los Angeles. You will develop and maintain embedded firmware in C, work on both new products and legacy systems, and collaborate across cross-functional teams to deliver reliable software for our hardware platforms.

Responsibilities include debugging complex firmware, designing modular software, and creating documentation and tests.

Qualifications

• Bachelor’s degree required in CS or related field.
• Strong proficiency in C.
• Experience with microcontrollers, embedded hardware, and PC applications.
• Understanding of software engineering principles: Abstraction, Decoupling and Cohesion.
• Familiarity with design patterns and software structures.
• Understanding UML and technical documentation.
• Ability to debug complex firmware and software.
• Experience refactoring legacy systems while maintaining functionality.

Responsibilities

• Design, implement, test, and maintain embedded firmware in C.
• Perform continuation engineering on existing products, troubleshoot, and add features.
• Investigate and resolve firmware, software, and integration issues.
• Develop supporting tools and test applications in Python.
• Support manufacturing with test platforms and production software.
• Participate in architecture and design discussions to improve maintainability.
• Contribute to code reviews and improve engineering practices.
• Produce documentation and validation procedures for firmware and tools.

Skills

C programming

Embedded systems

Software debugging

Legacy refactoring

UML & documentation

Design patterns

Abstraction & decoupling

Education

Bachelor’s degree in computer science or related discipline

Tools

Python

Job description

The Firmware Engineer combines strong software engineering fundamentals with practical hardware programming experience, delivering practical results while maintaining engineering rigor. They understand how to build maintainable, testable, and reliable software, working directly with electronic hardware. This position involves both new product development and continuation engineering of existing products, requiring curiosity, adaptability, and the ability to work effectively with legacy codebases of varying maturity levels.

Key Responsibilities

• Design, implement, test, and maintain embedded firmware primarily in C
• Perform continuation engineering on existing products, including troubleshooting, feature enhancements, defect resolution, and lifecycle support
• Investigate, debug, and resolve firmware, software, and system-integration problems using appropriate tools and methodologies
• Develop supporting tools, test applications, and manufacturing utilities in Python
• Support manufacturing and production teams by developing and maintaining test platforms, diagnostic tools, and production software
• Speak to and participate in architecture and software design discussions that promote maintainability, modularity, and reliability
• Participate in code reviews, provide constructive feedback, improve code quality, and elevation of engineering practices
• Produce clear documentation, test and validation procedures, and technical design information, and of the firmware and software tools

Qualifications

• Bachelor’s degree in computer science or related discipline
• Strong proficiency in the C Programming language
• Strong experience developing software for microcontrollers, embedded hardware, and PC-applications
• Strong understanding of software engineering principles, including:
• Abstraction, Decoupling and Cohesion
• Design Patterns and Structures
• UML and Software Documentation
• Optimizations for Microcontrollers
• Experience debugging complex software and firmware systems
• Refactoring legacy systems while preserving functionality and reliability