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Data Engineer (m/f/d)

Platform · Konstanz, hybrid Posted on

The task

The data we work with is almost always there already — only in a controller from 2004, in an OPC UA server nobody has touched since commissioning, and in a CSV folder on a network drive. You build the route in between: connection, modelling, quality assurance, until a number that holds in operation also holds in the platform.

This is not work on a reference data set. When we take on a plant, you come along — because the question of what a signal means is answered in the hall and not in the data sheet. And what you build afterwards, you also operate: there is no team here that takes your pipelines off you once they run.

You come into a platform that exists and routes that are running. In the first weeks you take over an existing connection, then the next plant from the first measurement on.

Key facts

Location
Am Seerhein 6, 78467 Konstanz. Two days a week on site, the rest as you arrange it.
Contract
Permanent employment
Hours
Full or part time
Start
immediately
Pay
€58,000–72,000 gross a year, depending on experience. No haggling over the number, only over where you sit in the range.
Closing date
Questions first
info@control-f.io

Your work and what it takes

What you do

  • Connecting plant: OPC UA, Modbus, MQTT, and the rest that arrives as a file. One decision per connection about what actually has to be read from the machine.
  • Building data models that describe a plant and not a table: signals, aggregates, states — versioned, so that an analysis from last year still means the same thing next year.
  • Making quality measurable. A missing reading, a frozen sensor and a changed scaling factor look the same in the database and are three different incidents.
  • Operating the routes: orchestration, alerting, catch-up after an outage. What breaks at night has to be complete in the morning without anyone touching it.
  • Working on the same model as the colleagues in analytics — they are the first to notice when a definition has shifted.

What is required

  • Three years or more of data routes in operation, not only in projects.
  • Python at a level where you tidy up other people's code; SQL at a level where you read a query plan.
  • Experience with time series and with what makes them difficult: time zones, sampling rates, late arrivals, gaps.
  • German for the hall, English for the documentation.

What helps and is not a condition

  • Industrial experience — PLC, control system, fieldbus. Anyone without it picks it up on the first plant.
  • Kubernetes, Terraform, everything around running the platform itself.
  • A degree. We have both in the team and the work does not differ by it.

Apply

A CV and three sentences on why this position in particular. No cover letter, no photo, no date of birth. We answer receipt within a week, and from receipt to decision it is usually three weeks — the procedure, with all four steps, is set out on the careers page, together with what happens to your documents afterwards.

Quote CF-2026-DE-01 in the subject line so your application lands in the right process. It is in the advertisement itself and is the only number we keep for it.

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