Cloud Engineer

CMC looking for a Cloud Data Integration Software Engineer to support the delivery of a 7.5MWh / 4.5MW energy storage project, ensuring reliable data transfer and cloud integration across our energy systems. The role will focus on updating and extending our PostgreSQL database hosted on DigitalOcean, migrating data transfer from GRE over 4G/5G to a more secure OpenVPN over WAN setup, and managing data transmission via MQTT from devices to the customer. You’ll also oversee the movement of data from the cloud into long-term storage for both internal and customer use, with customer preference for Apache Kafka formats. Key Responsibilities • Maintain and extend PostgreSQL databases hosted on DigitalOcean, updating schemas for new products and ensuring reliable cloud data storage. • Redesign data transfer architecture to use OpenVPN over WAN (replacing GRE/4G–5G) and ensure secure, stable communication between on-site systems and the cloud. • Manage MQTT data transmission from devices to the cloud and onward to customers, including potential translation to Apache Kafka. • Oversee long-term data storage solutions for both DGP and customer systems. • Collaborate with internal and Netherlands-based engineers on control software integration. • Support Linux-based processors, Rust-based embedded software, and JavaScript HMIs. • Provide assistance for AWS cloud environments in new DGP products. • Conduct end-to-end testing of data flow and connectivity, validate OpenVPN performance, and document system processes for smooth handover. Essential • 5+ years’ experience in software or data engineering roles, ideally within IoT, energy systems, or industrial automation. • Proficient in cloud-based data systems — particularly DigitalOcean (or similar, e.g., AWS, Azure). • Solid knowledge of PostgreSQL database design, optimization, and management. • Experience with OpenVPN, WAN networking, and secure data communication. Skills & Experience • 5+ years’ experience in software or data engineering roles, ideally within IoT, energy systems, or industrial automation. • Proficient in cloud-based data systems — particularly DigitalOcean (or similar, e.g., AWS, Azure). • Solid knowledge of PostgreSQL database design, optimization, and management. • Experience with OpenVPN, WAN networking, and secure data communication. • Strong understanding of MQTT protocols and IoT-style data transfer. • Experience integrating cloud databases with long-term data storage solutions. • Confident working in Linux-based environments. • Strong documentation, testing, and debugging skills. • Comfortable working autonomously (60–70% of the time independently). Desirable Skills • Programming experience in Rust (for Linux processor development). • Experience with JavaScript (for HMI or front-end interfaces). • Familiarity with AWS cloud infrastructure. • Knowledge of Apache Kafka and data streaming architecture. • Background in energy storage, embedded systems, or industrial IoT. If you feel you could be a good fit, please get in touch! CMC provide expert engineering solutions on an international capacity for advanced engineering projects. Established in 2016, we set out our mission to be the best service-driven consulting business in global STEM markets, and after rapid growth in just a few years, we’re already delivering true expertise to major technology brands and leading companies around the world. As we expand our reach and take on new projects, we have assignments available for experienced embedded technology professionals to join our consultancy and deliver the expert solutions and high level of service we’re known for across multiple ventures. By partnering with CMC you get the chance to work with some of the world’s leading technology specialists. From our global offices we support you with each new project, providing a complete scope of work definition ahead of any engagement so you know exactly what’s required by the assignment, before you land on-site. As the project is completed we can continue to work with you by setting up your next project from our global network of leading technology companies. No terminology in this advert is intended to discriminate on the grounds of age or experience, and we confirm that we are happy to accept applications from persons of any age or experience for this role.