Senior Embedded Software Engineer C++ (m/f/d)

About the Company

We are the globally successful Solar-Log GmbH and BKW Energie AG, an internationally active energy company based in Switzerland. Solar-Log GmbH‘s expertise lies in software development for solar monitoring, smart energy and feed-in management, while BKW offers total solutions in the areas of energy, buildings and infrastructure. Our vision is to make the digitalisation of renewable energy sources a reality.

About the Role

Together with you, we would like to achieve our goal. To strengthen our team we are looking for a Senior Embedded Software Engineer C++ (m/f/d)

Responsibilities

Requirements Engineering

• Derive detailed technical requirements from upper-level product and system requirements
• Use requirements as the authoritative basis for all development decisions; create concepts that make firmware dependencies and external interfaces visible, enabling the team to handle complexity in a controlled manner
• Work closely with the Product Owner to discuss, align and refine requirements; challenge ambiguity early and ensure shared understanding of scope within the team

Architecture & Design

• Design and maintain formal layered software architectures; apply architectural patterns consistently during implementation
• Create solution concepts before implementation starts, evaluate options, assess trade-offs and align on the approach with the team
• Create architectural concepts covering internal firmware dependencies and external system interfaces; present and discuss these with the team based on facts and technical reasoning

Embedded C++ Development

• Develop C++ applications and system services under embedded Linux with clean architectural boundaries
• Author and maintain Yocto recipes, layers, image configurations and SDK builds
• Integrate protocols: RS485, Modbus RTU/TCP, CAN, SunSpec, MQTT, IEC 60870

Embedded Cybersecurity Development

• Apply embedded cybersecurity concepts: secure boot, encrypted communication, minimal attack surface, key management
• Contribute to a secure boot chain-of-trust strategy across bootloader, image integrity, and firmware update flows
• Integrate TLS-secured communication channels with backend services
• Harden Linux embedded devices to minimize attack surfaces by applying least-privilege and zero-trust principles, while enabling authorized remote access
• Design and maintain secure over-the-air firmware update mechanisms (package signing, artifact verification, and CI/CD integration)
• Apply secure secrets provisioning and renewal flows in embedded devices
• Participate in threat modeling and risk assessment for embedded attack surfaces
• Monitor and remediate security vulnerabilities by performing CVE monitoring against SBOMs, including third-party dependencies

Quality & Collaboration

• Write unit tests and contribute to test automation including co-development of hardware/software simulators for testing
• Work effectively in a distributed remote team; use Git, CI/CD pipelines and communication tools proficiently
• Participate actively in agile processes (Scrum); contribute to reviews, planning and retrospectives

Your Profile

• Degree in Computer Science, Electrical Engineering or comparable; several years of embedded C++ (C++14/17/20/23) under Linux
• Hands-on Yocto Project experience: custom layers, recipes, BitBake, cross-compilation
• Proven hands-on experience to apply architectural patterns (e.g., layered architecture, blackboard, microservices) in production code
• Experience deriving and managing requirements with formal methods and tools
• Knowledge of energy-domain protocols (Modbus, SunSpec, MQTT)
• Knowledge of embedded cybersecurity principles and hands-on experience with secure boot on NXP iMX(HAB), CAAM, dm-verity, RPM package signing and Linux device hardening in production environments
• Experienced working in a software product team using Git and CI/CD; comfortable in a fully remote setup
• Structured and precise, you communicate technical concepts clearly and ground every discussion in facts
• AI-assisted development as part of a modern engineering workflow; hands-on experience is a plus, but a genuine interest and willingness to adopt these tools is essential
• Fluent English (required); German is a strong advantage