Software Engineer - Customer Integration (Network)

• Experienced Network Engineers: We prioritize candidates with established in-vehicle network expertise who can take immediate ownership of switch firmware, EHAL, and network security, serving as the technical contact for customers and OEM architects.
• Embedded Software Specialists: We also highly welcome strong embedded software engineers with a solid foundation in Ethernet and networking who are eager to specialize. You will be supported by your squad to grow into this deep expertise, contributing to production-level development and verification from day one.

• →Work under the guidance of the Squad Lead to execute the full engineering lifecycle—from Implementation to Verification.
• →Switch roles flexibly based on the squad's goals (e.g., focusing on feature development in one sprint, and shifting to verification tasks in the next) to ensure the mission is accomplished.

• Development: Design and develop high-performance C/C++ embedded software; this involves developing the Ethernet Hardware Abstraction Layer (EHAL) and implementing switch and Ethernet driver/control logic for Automotive Ethernet networks.
• Network Design: Define and maintain the in-vehicle network design—topology, VLAN/QoS, and the communication matrix—and bring up new ECUs and switches on the network.
• Configuration & Security: Configure and harden the in-vehicle network for secure, high-performance communication across Automotive Ethernet and connected buses (CAN/CAN-FD).
• Verification: Diagnose network integration issues through packet and protocol analysis, and validate network performance (latency, jitter, bandwidth) against defined requirements.
• Integration Ownership: Serve as the technical owner of in-vehicle network integration, working closely with OEM network architects and customer engineering teams.

• QA Ownership: Champion a culture of total ownership. You define "Done" not merely by implementation, but by delivering software that is Production-Ready and rigorously validated.
• Maintain CI/CD pipeline: Actively troubleshoot and resolve build/test failures in the CI/CD pipeline as if they were your own code errors.
• Test Automation: Design Python-based test cases and build automation frameworks to verify both your own code and the squad's deliverables.
• Documentation: Treat documentation as code. Create and maintain detailed technical documentation—including APIs, dependencies, and integration guides—so the software is accessible, maintainable, and seamlessly integrated by customers.
• Peer Review: Participate in Code Reviews not just for logic, but with a focus on Testability and Safety, ensuring the code is robust before it merges.

• Leverage AI tools such as GitHub Copilot and Claude to maximize productivity.
• Use AI to lower the barrier for cross-functional tasks (e.g., generating test scenarios for complex logic, or debugging unfamiliar code), allowing you to focus on high-value engineering challenges.

• On-site Support: Support major test events with partners on-site, utilizing packet analysis and diagnostic tools (e.g., Wireshark, Vector CANoe, traffic generators, and PHY/physical-layer analyzers) to troubleshoot and resolve complex network performance, timing, and connectivity issues across Automotive Ethernet, TSN, and gateway paths (CAN/CAN-FD, LIN) within vehicle or test bench environments.
• Technical Communication: Serve as a primary technical contact for integration issues, providing deep-dive analysis on network configurations, switch/VLAN and firewall setups, service and diagnostic protocol behavior (SOME/IP, DoIP/UDS), and security mechanisms (MACsec, SecOC), and troubleshooting network-related anomalies to provide clear guidance for customer engineering teams.

• Experience: 3+ years of experience in embedded software development or engineering.
• Core Language: Proficiency in C/C++ programming (strong understanding of pointers, memory management, and data structures).
• OS Environment: Solid experience in development and debugging within a Linux environment.
• Network interest: Genuine interest in in-vehicle networking, and a working understanding of TCP/IP and Ethernet fundamentals.

You already bring deep, hands-on networking expertise, such as:

• Automotive Ethernet: Deep expertise in 100/1000BASE-T1 (and 10BASE-T1S for zonal architectures) and in-vehicle network architectures.
• Network Switch Control & EHAL: Hands-on development of the Ethernet Hardware Abstraction Layer (EHAL) and switch driver/control logic, including the Linux DSA switch framework and PHY/MAC bring-up.
• TSN & Time Sync: Time-Sensitive Networking—gPTP/802.1AS time synchronization, Time-Aware Shaper (802.1Qbv), Credit-Based Shaper (802.1Qav), and frame preemption (802.1Qbu).
• Service & Diagnostic Protocols: SOME/IP and SOME/IP-SD (service discovery), and diagnostics over IP—DoIP (ISO 13400) and UDS (ISO 14229).
• Gateway & Legacy Buses: Routing and gateway design between CAN/CAN-FD, LIN, and Automotive Ethernet.
• Network Security & Configuration: Proficiency in the Linux network stack (iptables/netfilter, tc/qdisc, firewalls, VLAN management), plus automotive security mechanisms such as MACsec (802.1AE) and Secure Onboard Communication (SecOC).
• Troubleshooting & Tools: Packet tracing and protocol analysis with Wireshark/tcpdump, Vector CANoe/CANalyzer

You have a strong embedded/firmware foundation and are eager to build the expertise above. We're looking for evidence you can get there fast:

• Solid embedded C/C++ and Linux fundamentals (see Foundation above).
• Some exposure to networking—course work, side projects, or prior tasks involving Ethernet, TCP/IP, sockets, or network drivers.
• A clear motivation to specialize in automotive networking (Automotive Ethernet, TSN, SOME/IP, network security) and a demonstrated ability to learn complex, low-level systems quickly.

• Scripting: Experience using Python for writing test scripts or automating engineering tasks.
• Testing Willingness: A flexible attitude with a strong belief that "Testing is Engineering." You are willing to balance your time between Dev and QA tasks (even up to 50:50) depending on the squad's needs.
• Critical Thinking: Ability to look beyond the "Happy Path" and critically ask, "Is this truly safe for the user?"

• Standards & Audit: Experience in automotive design reviews and audit processes based on standards such as ISO 26262 (Functional Safety), Automotive SPICE (ASPICE), or ASIL.
• Code Quality Analysis: Experience adhering to MISRA C/C++ coding standards and using static analysis tools such as Coverity, Polyspace, or similar products to manage code quality.

• Collaboration: Experience working in Cross-functional Squads or Agile/Scrum environments.
• Tools: Proficiency with Jira/Confluence and Git-based workflows (Branching, Pull Requests).
• Frameworks: Experience with Unit/Integration test frameworks (e.g., PyTest, GoogleTest).
• Network Protocols: Deep understanding of automotive communication protocols (Ethernet, CAN, SOME/IP).
• Adaptability: Eagerness to learn and adopt new technologies and AI tools to enhance workflow efficiency.

• Departmental team building and outings
• Employee Referral Program
• Culture/Employee Satisfaction Surveys - Feedback matters!
• Innovative Award Program (annual)

Sonatus is a fast-paced and innovative company and is seeking team members who are passionate about making a difference. If you are ready to take your career to the next level, we highly encourage you to apply.