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At Mainlink, we’re more than just a smart metering company – we’re a team of tech enthusiasts who are changing the game.

If you’re someone who appreciates a dynamic and supportive work environment, values collaboration, and is always on the lookout for the next big thing in technology, then you’ll fit right in. We believe in working hard and playing hard, and we’re proud of the positive and professional culture we’ve created. So, if you’re ready to join a company that’s not just about the work, but about making meaningful connections and having a little fun along the way, come join us at Mainlink.
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Not seeing a role that matches your skills? Let’s talk — we’re always open to meeting great people: info@mainlink.net

Description:

We are looking for an experienced backend engineer to help build scalable and reliable systems for our IoT and energy platform. You will work with TypeScript, Python, PostgreSQL, and ClickHouse, and develop services that integrate Kafka and MQTT for high-throughput data ingestion. The system architecture includes REST, gRPC, and GraphQL interfaces.

Responsibilities:

  • Build and maintain backend services and APIs (REST / gRPC / GraphQL)
  • Design scalable data models using PostgreSQL and ClickHouse
  • Integrate and process real-time data streams via MQTT and Kafka
  • Improve CI/CD pipelines and ensure production readiness
  • Participate in architecture and performance reviews
  • Mentor team members and collaborate with cross-functional teams

Requirements:

  • 5+ years of backend development experience
  • Proficiency in TypeScript (Node.js) and/or Python
  • Strong experience with relational databases and ClickHouse
  • Knowledge of Kafka, MQTT, and message-driven architectures
  • Experience with Docker (Kubernetes is a plus)
  • Focus on performance, security, and reliability

Nice to have:

  • Experience with cloud platforms like AWS
  • Domain knowledge in IoT or telemetry systems
  • Familiarity with observability tools (Grafana, Prometheus, Sentry)

Salary: 6500€-7200€ (gross)

Send Your Resume: mantas.morkunas@mainlink.net

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