Golang Developer for IoT / Industrial Data Platform

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 promote a diverse and inclusive work environment.

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.

Your tasks

• 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

• Participate in architectural discussions, feature scoping, and technical design, taking ownership of complex functionalities from concept to implementation

• Collaborate closely with frontend, QA, and product teams while providing support, troubleshooting, and continuous improvements for deployed services

Requirements

• At least 4 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 communication standards such as OPC UA, MQTT, and similar protocols

• Expertise in database schema design, optimisation, and efficient data handling

• Solid skills in building and maintaining APIs using REST and gRPC

• English at an advanced level

• Residing in Poland required

What we offer 

• Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas 

• Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market 

• We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 

• Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more 

• Comfortable workplace – class A offices or remote work 

• Dozens of fascinating projects for prestigious brands from all over the world 

• PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers 

• Investment in your growth – meetups, webinars, training platform and technology blog – you choose 

• Fantastic atmosphere created by all Sii Power People 

Join the Sii team – develop your skills, gain experience, and build your career!