Senior Software Developer, Vehicle Applications Software

Sonatus; Dublin; On-site; EUR 90,000 - 125,000; Full time

Job summary

Sonatus is seeking a Senior Embedded Software Engineer in Dublin to develop and optimise its core in-vehicle software platform for HPC-powered vehicle applications and services. You will contribute to next-generation vehicle software, middleware, and platform services running on automotive-grade hardware.

The role focuses on building high-performance in-vehicle applications, cross-compiling, testing, and debugging on Embedded Linux, with emphasis on low latency data transfer to the cloud.

Qualifications

• 5+ years of professional software development experience.
• Bachelor's degree in computer science, maths, physics, or a similar field.
• Strong C++14/17 proficiency with RAII, smart pointers, multithreading and IPC.
• Experience with Embedded Linux, and POSIX OSs such as Android/QNX.
• Experience writing automated unit/integration tests using C++ and Python.
• Experience with HTTP, MQTT and serialization formats (Protobuf/FlatBuffers/JSON).
• Familiarity with vehicle networks (CAN/Ethernet) and AUTOSAR is a plus.
• Good written and verbal communication skills.

Responsibilities

• Build, maintain, and optimize high-performance in-vehicle applications and connectivity middleware with low latency and high throughput between vehicles and cloud.
• Implement and support platform services for system-wide resource management, health monitoring, and lifecycle management.
• Troubleshoot and root-cause issues across development, testing, and production environments.
• Author unit and integration tests and conduct code reviews to ensure code quality.
• Follow development processes and create design documents for reviews and knowledge sharing.

Skills

Modern C++ (C++14/17)

Embedded Linux development

Unit/Integration testing

Networking: HTTP/MQTT

Vehicle networks: CAN/Ethernet

Rust (familiar)

Communication

Education

Bachelor's degree in CS/Math/Physics or similar

Tools

Python

Protobuf/FlatBuffers/JSON

Job description

Senior Software Developer, Vehicle Applications Software

Dublin, Ireland

At Sonatus, we’re driving the transformation to AI-enabled software-defined vehicles. Traditional automotive software methods can’t keep pace with consumer expectations shaped by the mobile industry—where features evolve rapidly, update seamlessly, and improve continuously. That’s why leading OEMs trust Sonatus to accelerate this shift. Our technology is already in production across more than 9 million vehicles on the road today and rapidly expanding.

Headquartered in Sunnyvale, CA, with 250+ employees worldwide, Sonatus combines the agility of a fast-growing company with the scale and impact of an established partner. Backed by strong funding and proven by global deployment, we’re solving some of the most interesting and complex challenges in the industry. Join us and help redefine what’s possible as we shape the future of mobility.

Role Summary

We are seeking a Senior Embedded Software Engineer to develop and optimise our core in-vehicle software platform for Sonatus Fastlane Collector and Copilot products. In this role, you will be a key contributor to next-generation vehicle applications, middleware, and platform services running on automotive-grade High-Performance Compute (HPC) platforms.

Job Responsibilities

• Build, maintain, and optimize high-performance in-vehicle applications and connectivity middleware, ensuring low latency and high-throughput data transfer between vehicles and the cloud.
• Implement and support robust platform services responsible for system-wide resource management, health monitoring, and lifecycle management.
• Troubleshoot and root-cause issues across development, testing, and production environments.
• Author comprehensive unit and integration tests. Conduct code reviews to maintain high standards of code quality.
• Adhere to established development processes and create clear design documents to facilitate design reviews and knowledge sharing.

Requirements

• 5+ years of professional software development experience.
• A bachelor's degree in computer science, maths, physics, or a similar field.
• Strong proficiency in modern C++ (C++14/17), with a deep understanding of RAII, smart pointers, multithreading, inter-process communication, and memory management in resource-constrained environments.
• Hands‑on experience developing, cross‑compiling, testing, and debugging on Embedded Linux. Experience with Android, QNX, and other POSIX-compliant operating systems is a plus.
• Experience writing automated unit and integration tests using modern C++ testing frameworks and Python.
• Experience with modern transport protocols (HTTP, MQTT) and serialization formats (Protobuf, FlatBuffers, JSON).
• Exposure to vehicle network/diagnostic standards (CAN, Ethernet, SOME/IP, UDS) or automotive industry standards such as Adaptive AUTOSAR is a plus.
• Familiarity with Rust is a plus.
• A team player with excellent written and verbal communication skills.