Golang Developer for IoT / Industrial Data Platform

Overview The Embedded Competency Center is an organizational unit of Sii, that brings together almost 500 specialists. We are currently looking for a Golang Developer. You will design, develop, and maintain the core backend infrastructure that powers the entire platform, working closely with cross-functional teams to deliver robust, scalable solutions. Responsibilities • Design, enhance, and support connectivity solutions that integrate various communication protocols such as MQTT, OPC, REST, Kafka, and more • Develop and operate systems for reliable data acquisition, transformation, analysis, and processing across heterogeneous sources • Build and maintain core platform services, including OPC UA Server features, data calculation pipelines, and historical/trending data modules • Implement extensible components enabling user-defined scripts, SQL execution, workflow automation, and customizable rule chains • Develop notification and messaging capabilities, including email, SMS, Slack, Google Chat, and other communication channels, ensuring consistent and timely delivery • Contribute to security features such as TOTP and other authentication and protection mechanisms to safeguard the platform and user data Qualifications • Golang • C • C++ • Python • At least 5 years of backend development experience, including work on large-scale, multi-service backend systems • Proficient in Go as the primary language, with additional skills in C/C++, Python, SQL, and Linux/Windows • Skilled in containerised development using Docker • Solid understanding of distributed architectures and practical work with microservices • Practical experience with event-driven systems, messaging tools, and asynchronous communication • Understanding of industrial communications standards such as OPC UA, MQTT, and similar protocols • Residing in Poland required Benefits and Company Since 2006 on the market, 7 300+ experts, PLN 2,1 billion revenue, 11 times Great Place to Work title – get to know Sii, the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We implement projects for over 200 clients from all over the world. Our mission is to identify and promote the best Workers – Power People. Learn more at sii.pl. Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment. Apply tot his job