Tech Stack
Job Description, Responsibilities & Requirements
About the Position
🚀 .NET Backend Developer
Location: Kraków, Poland - Hybrid
Join the Future of Digital Tech with Kolomolo
At Kolomolo, we don’t just follow trends - we set them. As a global supplier of IT services and digital modernization solutions, we help businesses embrace cutting-edge technology to optimize their operations. Now, we are growing and looking for fresh talent to grow with us.
Are you proactive, tech-savvy, and eager to build your career in IT? This role could be your perfect fit.
Responsibilities
- Maintain and extend backend services that power our IoT platform.
- Design and implement new features related to device management, user management, alerts, and integrations.
- Ensure reliability, performance, and scalability of existing systems.
- Work with messaging and event-driven architectures for device communication and data processing.
- Integrate devices using different communication protocols and connectivity types.
- Collaborate with product, hardware, and DevOps teams to deliver end-to-end solutions.
- Debug, monitor, and optimize production systems.
- Contribute to code quality through reviews, testing, and documentation.
Requirements
- Experience with .NET and/or Node.js (academic or commercial).
- Understanding of programming fundamentals and REST APIs.
- Familiarity with SQL and relational databases.
- Knowledge of Git and version control workflows.
- Willingness to learn new technologies and ask questions.
Technologies You’ll Work With
- Backend:.NET 6 & 8, Node.js 22+
- Databases: PostgreSQL, InfluxDB
- Messaging: Eclipse Mosquitto (MQTT), RabbitMQ
- Protocols: HTTP, MQTT, AMQP, CoAP, TCP
- Device Connectivity: WiFi, LoRa, Zigbee
- DevOps & Tooling: Docker, GitLab CI
What You Will Learn
- How IoT platforms are built and maintained end to end.
- Basics of event-driven and message-based architectures.
- Working with different networking and IoT protocols.
- Handling and storing sensor data, including time-series data.
- Writing clean, maintainable backend code in a production environment.
Why Join Kolomolo?
At Kolomolo, we prioritize innovation, agility, and autonomy. Our teams have the freedom to own their work, share ideas, and make meaningful contributions. Inspired by Scandinavian values, we believe in work-life harmony and creating an inclusive culture where everyone thrives.
You will be part of a passionate, skilled, and friendly team that works hard and celebrates together. Here, you can build your career on your own terms, with opportunities to grow, learn, and make a real impact.
Our Flat Structure & The Culture of Inclusion
At Kolomolo, we break the corporate mold. We offer:
- Agile Teams & Autonomy: No micromanagement. You’ll own your projects and enjoy the freedom to innovate.
- Work-Life Harmony: Inspired by Scandinavian values, we prioritize balance and flexibility, where remote work and asynchronous collaboration are in our DNA.
- Learning & Growth: Continuous learning is at our core. We reward hard work, value smart ideas, and foster an environment of mutual respect and trust.
- Inclusive Culture: We believe in DEI: diversity, equity and inclusion. We are committed to creating an environment where every individual, regardless of background, identity, or experience feels valued, respected, and empowered to thrive.
About Kolomolo
To be leaders in digital modernization by helping companies embrace the latest cutting-edge technologies to optimize their business with the help of our talented experts.
Founded in 2016, with about 100 co-workers and a turnover of 5M.
Ready for the next step? Apply now at https://jobs.kolomolo.com/jobs/7033152-.net-backend-developer-junior-internship and start an exciting journey of growth and innovation with us!