Senior Software Engineer, Data Integration

Stack

Responsibilities

• ▹Build new measurement data integrations end-to-end: connect external IoT devices (via Kafka, MQTT, IEC104, REST, gRPC) through device registration and normalization to live data ingestion, transformation and storage
• ▹Design and improve the measurement data integration framework to onboard new sources faster, more reliably and more transparently
• ▹Own the full integration lifecycle — from raw data of external sources to normalized, mapped readings, including custom transformations and ID mappings
• ▹Contribute to the existing ETL framework for importing and digitizing customers' grid data from heterogeneous sources
• ▹Optimize existing components for batch and streaming workloads in terms of performance, reliability and transparency

Requirements

• ▹2+ years of relevant backend development experience with a focus on data engineering, API integration or event-driven systems
• ▹Degree in computer science, data science, software engineering, electrical engineering, industrial engineering or a comparable field
• ▹Hands-on Python development experience, familiar with common best practices
• ▹Experience with SQL databases (preferably PostgreSQL or TimescaleDB), data modeling and query design
• ▹Experience integrating with external APIs or streaming systems (e.g. Kafka, MQTT, REST, gRPC)
• ▹Fluent English (C1)

Nice to have

• ▹Familiarity with IoT or energy-industry protocols (e.g. MQTT, IEC104)
• ▹Experience with real-time data pipelines

Soft skills

What we offer

• ▹Flexible work mode: fully remote or hybrid, with office option
• ▹Option to work abroad up to 3 months per year, anywhere in the EU or US
• ▹30 vacation days + 3 corporate holidays
• ▹Modern tech stack
• ▹High-end hardware (16-inch MacBooks, 2 monitors)
• ▹Urban Sports Club support
• ▹Mental wellbeing support via partner nilo
• ▹Flexible monthly mobility budget (e.g. Jobrad, public transport)
• ▹Time and budget for individual growth
• ▹Regular tech and growth talks
• ▹Optional company pension scheme
• ▹Regular company and team events

About the company

envelio is a Cologne-based company supporting the energy transition with a digital-twin-based grid platform (Intelligent Grid Platform). More than 180 people from over 20 nationalities work there.