IoT Software Engineer (Freelance)

Company Description

TOMRA Food is a multinational organisation and a leading provider of sensor-based sorting, peeling and integrated post-harvest solution for the food industries. Transforming global food production to maximise food safety and minimise food loss by making sure Every Resource Counts™, has been our strength for over 50 years.

At TOMRA, we want people to innovate, show passion in their work and be responsible. We encourage the freedom to innovate and take risks that result in breakthroughs that challenge the status quo. We value passion that focuses and commits to meeting success. We believe in a responsible and safe mindset that takes care of our customers, products, and fellow employees.

Join the resource revolution!

Job Description

We are seeking an experienced IoT Software Engineer to join our team, working across two core disciplines: Linux-based operating system development for edge devices and Azure IoT Edge application development. This role sits at the intersection of embedded systems, cloud-connected software, and cybersecurity. You will be key in hardening our custom Linux OS and applications for IoT deployments, building and maintaining cloud-connected edge software, and driving compliance with emerging cybersecurity regulations including the Cyber Resilience Act (CRA) and NIS2 Directive.

Responsibilities:

Develop, maintain, and harden a custom Linux-based operating system (Ubuntu) for IoT edge devices.

Build automated OS image CI/CD pipelines and manage system services, networking, and boot processes.

Implement OS-level security controls including secure boot, disk encryption, firewall rules, and certificate management.

Manage device provisioning and lifecycle using Azure Device Provisioning Service (DPS).

Execute global-scale OS rollouts and manage the security update lifecycle.

Develop various Azure IoT Edge modules in C#

Build machine connectors for telemetry ingestion and predictive maintenance.

Write automated tests and technical documentation.

Integrate devices with Azure IoT Hub and Device Update for IoT Hub.

Maintain container-based workloads and troubleshoot production issues.

Support NIS2 and CRA compliance activities.

Perform threat modelling, security reviews, and vulnerability remediation.

Maintain logging, monitoring, and compliance documentation.

Qualifications

About You:

Bachelor degree or a Master degree in computer science or related field.

5+ years’ experience in IoT or embedded Linux software engineering.

Strong proficiency in C#. C++/Python a bonus.

Microsoft Azure IoT Edge and Docker experience.

Strong Linux system administration skills

Experience using LLMs for software development

Excellent interpersonal and cross-team communication skills.

Excellent written and spoken English.

Curiosity, willingness to learn, and motivation to help shape TOMRA’s digital capabilities.

Other Skills

Experience with NIS2, CRA, or IEC 62443

Excellent technical problem-solving, troubleshooting, and follow-up skills.

Ability to cooperate with multiple R&D teams in Europe and New Zealand.

Organized, detail-oriented and able to break-down work.

Self-motivated and disciplined.

Willingness to travel internationally to support new digital solutions and/or new applications (<10%).