Backend Developer (m/f/d)

NACOS Marine; Drammen; On-site; NOK 900,000 - 1,300,000; Full time

Job summary

NACOS Marine is seeking an experienced Backend Developer (m/f/d) to join our R&D team. You will design and develop safety-critical backend software for embedded controllers and automation platform components powering vessels worldwide.

Contribute to protocol stacks, real-time performance, and secure communications while collaborating with cross-functional teams to deliver scalable maritime automation solutions.

Qualifications

• Bachelor's or Master's degree in Software Engineering, CS, or related technical field.
• Minimum 5 years of embedded C/C++ experience.
• Experience with comms protocols (UART, SPI, I2C, Profinet, TCP/IP, Modbus, OPC-UA, MQTT).
• Strong understanding of microcontroller architectures, DMA, interrupts, low-level drivers, and embedded interfaces.
• Experience with embedded cybersecurity concepts (secure boot, encrypted comms, access control).
• Familiarity with Git and CI/CD practices.
• Fluent in English, written and spoken.

Responsibilities

• Develop embedded backend software in C/C++ for microcontrollers, focusing on performance and real-time operation.
• Design and maintain protocol stacks (UART, SPI, I2C, Profinet, TCP/IP, Modbus, MQTT).
• Develop transport, session, and application layer functionality with state machines and parsing.
• Optimize timing, latency, throughput, and resource use.
• Integrate firmware with hardware interfaces and drivers.
• Ensure compliance with maritime, industrial, and cybersecurity standards.
• Produce technical documentation across the software lifecycle.
• Collaborate with software, hardware, QA, and systems teams to deliver robust platforms.
• Participate in code reviews, technical discussions, and testing.

Skills

Embedded software

C/C++ programming

RTOS / real-time

UART/SPI/I2C

Git version control

English communication

Education

BSc or MSc in CS/EE

Tools

Git

CI/CD

Job description

NACOS Marine delivers advanced navigation, automation, and control systems for vessels worldwide. Our integrated solutions help ship owners and operators improve safety, efficiency, and sustainability at sea. With proven reliability, innovative technology, and dedicated support, we enable smarter maritime operations. Let’s shape the future of maritime technology together.

Role Overview

We are seeking an experienced Backend Developer (m/f/d) to join our R&D team developing the next generation of marine automation systems.

In this role, you will design and develop safety-critical backend software for embedded controllers, communication protocols, and automation platform components that power vessels worldwide. Working as part of a strategic development program, you will collaborate with cross-functional engineering teams to deliver scalable, reliable, and secure software solutions for maritime automation.

Key Responsibilities

• Develop embedded backend software in C/C++ for microcontrollers, focusing on performance, memory efficiency, and real-time operation
• Design, implement, and maintain communication protocol stacks, including both proprietary and industry-standard protocols
• Develop transport, session, and application layer functionality, including state machines, framing, parsing, and error handling
• Optimize software for timing, latency, throughput, and resource utilization
• Integrate firmware with hardware interfaces, peripherals, and low-level drivers
• Ensure compliance with relevant maritime, industrial, and cybersecurity standards
• Produce and maintain technical documentation throughout the software development lifecycle
• Collaborate closely with software, hardware, QA, and system engineering teams to deliver robust platform solutions
• Participate in code reviews, technical discussions, and continuous improvement initiatives
• Contribute to testing, debugging, and validation of embedded software and communication interfaces

Key Requirements

• Bachelor's or Master's degree in Software Engineering, Computer Science, Electrical Engineering, or a related technical field
• Minimum 5 years of experience developing embedded software in C/C++
• Proven experience implementing communication protocol stacks such as UART, SPI, I2C, Profinet, TCP/IP, Modbus, OPC-UA, or MQTT
• Strong understanding of microcontroller architectures, DMA, interrupts, low-level drivers, and embedded hardware interfaces
• Experience with embedded cybersecurity concepts such as secure boot, encrypted communication, and access control
• Familiarity with Git version control and modern CI/CD development practices
• Strong analytical and problem-solving skills with a structured approach to software development
• Excellent communication skills and ability to collaborate across multidisciplinary teams
• Passion for emerging technologies, embedded systems, and AI-assisted software development
• Fluent in English, both written and spoken

Why choose us and why we'd choose you?

At NACOS Marine, you will contribute to the development of advanced automation technology used on vessels around the world. You will work alongside experienced international engineering teams on innovative products that combine embedded software, hardware, and maritime expertise.

We value collaboration, technical excellence, and continuous innovation, and we're looking for someone who enjoys solving complex engineering challenges while contributing to the future of maritime automation.

Please note that we are subject to the Norwegian Security Act, as stated below in both Norwegian and English.

Security Clearance

NACOS Valmarine AS provides solutions and services to the defence and security sector, and parts of our operations are subject to the Norwegian Security Act. For certain positions, it is therefore a requirement that the successful candidate is eligible for authorization and, where required by the position, security clearance in accordance with applicable Norwegian regulations and governmental requirements.

Candidates should be aware that the necessary security assessment may form part of the recruitment process, and that employment in certain positions may be conditional upon obtaining and maintaining the required security approvals.