T

Backend Engineer

tunen agronomy • Spain
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Tunen, a venture-backed startup building agricultural data products, is hiring a Backend Engineer to own the backend of a new live product that processes unstructured farm data at scale. You will lead parser development, own extraction quality with evaluation sets and metrics, and build features in Python, reporting directly to the founders. Requires 3+ years of production software experience, Python and FastAPI skills, professional use of language models, and on-site work in Madrid.

Key Highlights
Own the backend of a new live product that processes unstructured farm data at scale
Lead parser development and own extraction quality with evaluation sets and metrics
Report directly to founders in a small team where decisions ship the same week
Madrid-based with 1–2 remote days per week and up to 4 weeks/year of remote work
Key Responsibilities
Own the parser that turns farm documents into structured data that holds up agronomically, not just syntactically
Make one parser serve different customers and parts of agriculture, configured per domain rather than copied per customer
Own extraction quality: evaluation sets, metrics, and the call on whether a model or prompt change is actually better
Turn domain and product requirements into data contracts and agronomic rules so invalid values are rejected
Build features and fix bugs in the Python codebase, including groundwork for a new sensor-data optimisation project
Review code and learn from the reviews you get
Technical Skills Required
Python FastAPI GCP
Benefits & Perks
Generous compensation package
1–2 remote days per week and up to 4 weeks/year from anywhere
Relocation and visa support
Time on customer farms
A small team where your decisions ship the same week

Job Description

Tunen is a venture-backed startup taking the friction out of collecting farm data, so it can be used to build foundational agricultural datasets. Our products run on farms in Germany, Poland and Belgium and are rolling out to 10,000 farmers by early 2027.

The role

You will own the backend of one of Tunen's new live products, reporting directly to the founders. It processes unstructured farm data at scale and produces clean, domain-valid structured outputs.

What you will do

- Own the parser that turns farm documents never meant for software into structured data that holds up agronomically, not just syntactically.

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