Embedded Software Developer – Ethernet APIs

FHLB Des Moines; Herlev Kommune; On-site; DKK 650,000 - 900,000; Full time

Benefits offered by this job

Pension

Healthcare

Stock options

Meals and snacks

Job summary

Microchip Denmark is seeking an Embedded Software Developer to design, develop, and maintain OS-agnostic C APIs for Ethernet PHYs and switches used in automotive and industrial systems.

You will work at the intersection of low-level embedded development, networking, functional safety, and developer experience—building robust, reusable APIs and using AI-assisted tools to improve productivity and code quality in a regulated environment.

Qualifications

• Strong proficiency in C and embedded software development.
• Experience developing software for embedded systems, preferably in networking or communications.
• Experience in regulated environments with safety/quality requirements.
• Structured and analytical approach to solving complex technical problems.
• Ability to work independently within a cross-functional team.
• Strong written and spoken English communication skills.

Responsibilities

• Design, develop, and maintain clean, intuitive, and extensible C APIs for Ethernet PHYs and switches.
• Contribute to automated test infrastructure and API validation strategies.
• Develop MISRA-compliant C code and ensure API compatibility and long-term backward compatibility.
• Collaborate with chip design, systems engineering, networking, validation, and product development.

Skills

C programming

Embedded software

Structured problem solving

English communication

Education

Technical education in engineering or related field

Tools

Git

CMake

Ruby

Linux (user/kernel)

Job description

Are you looking for a unique opportunity to be a part of something great? Want to join a 17,000-member team that works on the technology that powers the world around us? Looking for an atmosphere of trust, empowerment, respect, diversity, and communication? How about an opportunity to own a piece of a multi-billion dollar (with a B!) global organization? We offer all that and more at Microchip Technology Inc. People come to work at Microchip because we help design the technology that runs the world. They stay because our culture supports their growth and stability. They are challenged and driven by an incredible array of products and solutions with unlimited career potential. Microchip’s nationally-recognized Leadership Passage Programs support career growth where we proudly enroll over a thousand people annually. We take pride in our commitment to employee development, values-based decision making, and strong sense of community, driven by our Vision, Mission, and 11 Guiding Values; we affectionately refer to it as the Aggregate System and it’s won us countless awards for diversity and workplace excellence. Our company is built by dedicated team players who love to challenge the status quo; we did not achieve record revenue and over 30 years of quarterly profitability without a great team dedicated to empowering innovation. People like you. Visit our careers page to see what exciting opportunities and company perks await!

Job Description

Shape the future of connected and software-defined systems

Are you passionate about embedded software, Ethernet technologies, and creating elegant solutions to complex technical challenges? At Microchip Denmark, you will join our API team and help define the software interfaces that power advanced Ethernet switch and PHY products for the automotive and industrial markets. You will work at the intersection of low-level embedded development, networking, functional safety, and developer experience—building robust, reusable APIs that enable customers to get the most from our silicon. We embrace modern software-development practices and make active use of AI-assisted engineering tools, including ClaudeCode, to improve productivity, explore solutions, automate repetitive tasks, and support high-quality development. You will have the opportunity to help shape how these tools are used responsibly in a regulated embedded-software environment.

Your role As an Embedded Software Developer, you will design, develop, and maintain OS-agnostic C APIs for Ethernet PHYs and switches. Your work will help enable key digital features used in next-generation automotive and industrial systems.

Key responsibilities

• Design, develop, and maintain clean, intuitive, and extensible C APIs for Ethernet PHYs and switches.
• Work with advanced digital features, including: Auto-negotiation Quality of Service (QoS) IEEE 1588/PTP time-stamping MACsec security Traffic shaping and policing.
• Ensure API compatibility, maintainability, and long-term backward compatibility.
• Contribute to automated test infrastructure and API validation strategies.
• Develop robust, readable, and MISRA-compliant C code.
• Work according to ASPICE, automotive quality processes, and applicable safety standards.
• Collaborate closely with colleagues in chip design, systems engineering, networking, validation, and product development.
• Use modern development tools—including AI-assisted tools such as ClaudeCode—to improve code quality, documentation, testing, and engineering efficiency.
• Participate in technical discussions, design reviews, and continuous improvements to development processes.

Requirements/Qualifications

• Strong proficiency in C and embedded software development.
• Experience developing software for embedded systems, preferably in networking or communications.
• Experience working in regulated environments with demanding safety, quality, or reliability requirements.
• A structured and analytical approach to solving complex technical problems.
• The ability to work independently while contributing effectively in a collaborative, cross-functional team.
• Strong written and spoken English communication skills.
• A relevant technical education and typically five or more years of applicable experience.

Valuable additional experience

• Experience in one or more of the following areas would be an advantage: Ethernet switch SoCs and PHYs.
• IEEE 802.1Q and Layer 2 forwarding concepts.
• QoS, TSN, or time-sensitive networking standards.
• MISRA, ASPICE, ISO 26262, IEC 62443, or other software and functional-safety standards.
• Git, CMake, Ruby, or related development and automation tools.
• Linux development in user space or kernel space.
• API design, automated testing, continuous integration, or software tooling.
• Standardization bodies, industry consortia, or Ethernet-related working groups.
• Practical experience using AI-assisted development tools, with a thoughtful approach to code review, security, intellectual property, and verification.

What we offer

• A highly influential role in a team developing leading-edge Ethernet technologies.
• The opportunity to work on software that supports the future of connected vehicles and industrial systems.
• Collaboration with experts across chip design, embedded software, networking, standards, and product development.
• A supportive environment where your ideas can influence both products and engineering practices.
• Career development opportunities along both technical and managerial paths.
• Exposure to international projects and opportunities for travel.
• A friendly, informal, and inclusive workplace with meals and snacks provided.
• Competitive compensation and benefits, including pension, healthcare, and stock options.

Join us If you want to work on challenging embedded-software problems, contribute to technologies that matter, and help build the next generation of Ethernet solutions, we would love to hear from you. Bring your expertise, curiosity, and passion for quality—and help us connect the future.

Travel Time: 0% - 25%