Data & AI Engineer (m/f/d)

JUNI gGmbH; Berlin; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Flexible working hours

Hybrid working

Modern Berlin workspace

Job summary

JUNI gGmbH in Berlin-Brandenburg seeks a Data & AI Engineer to own JUNI Core, the central data platform. You will design pipelines, data models and AI methods to make data actionable across our ecosystem tools.

You will work with a cross-functional team to integrate external data sources, maintain data quality, and define evaluation criteria for AI-powered matching and enrichment. Hybrid work and professional ownership are offered.

Qualifications

• ,

Responsibilities

• Own JUNI Core data platform including integration of source systems, data model and operations.
• Build and run data pipelines between tools and the platform, bidirectionally.
• Ensure data reliability with a single source of truth, deduplication, and alerts.
• Ingest external data (publications, patents, company data) via APIs and scraping, link to existing data.

Skills

4+ years data engineer/scientist

SQL

Postgres

Python

APIs & webhooks

LLMs in data pipelines

Matching/classification/ranking

API validation

GDPR/data privacy

Claude Code

Entity resolution

English fluency

German language

Tools

Claude Code

Job description

About JUNI

JUNI is building the leading startup ecosystem for science-based spin-offs in Berlin and Brandenburg. We connect universities, startups, corporates, investors and policymakers, and create the spaces, programmes and partnerships that translate research into successful companies.

That work produces data in many places: our own tools, our science partners, publications and patents, investors and talent. We are building JUNI Core, a central data platform that brings this together and feeds the tools our teams work with. We are looking for a Data & AI Engineer who owns this data layer long term: the pipelines, the data model, and the AI methods that make the data useful.

You report directly to our Head of Product & Tech and work closely with our Technical Product Manager and our IT & operations specialist.

The Challenge

Your mission

Data platform

• Taking ownership of JUNI Core: the integration of all source systems, the data model and its operation
• Building and running pipelines between our tools and the platform, in both directions
• Keeping data reliable: one clear source for every field, syncs that don't create duplicates, alerts when something breaks
• Adding new sources as they come and deciding how each fits the model

Data for our ecosystem tools

• Working out with the Product & Tech team which data JUNI needs, where it comes from and what we may use it for
• Building the data foundations for new tools in our ecosystem work
• Bringing in external data such as publications, patents or company data via APIs and scraping, and linking it to what we already know
• Making sure users can see where a result comes from

AI and data quality

• Using LLMs and embeddings for matching, classification and enrichment, with evaluation built in
• Defining what good output means per use case: acceptable error rates, reference cases, and what happens when a result is wrong
• Working with the Technical Product Manager and topic owners on what is worth automating
• Documentation and tests as part of the work, not after it

Your profile

• 4+ years as Data Engineer or Data Scientist, with pipelines and automations you have built and run in production
• Strong in SQL and Postgres
• Comfortable in Python for data work: pandas, notebooks, evaluation scripts
• Experience integrating SaaS tools via APIs and webhooks, including sync in both directions
• Practical experience with LLMs in data pipelines: embeddings, structured extraction, evaluation
• Experience with matching, classification or ranking methods, and how to measure whether they work
• You check what an API actually does instead of trusting its documentation
• You design with GDPR in mind: consent, retention, access
• You use Claude Code or similar AI coding tools daily and know where their output needs a hard review
• Experience with record linkage or entity resolution is a plus
• Fluent English; German is a plus

We offer

• A role with real ownership: JUNI's data platform and the data behind our tools are yours to shape
• Work that matters for science-based founders, researchers and our partners across Berlin-Brandenburg
• A motivated team with a hands-on spirit and flat hierarchies
• Flexible working hours and hybrid working
• A modern working environment in the heart of Berlin
• Compensation that reflects experience and responsibility

About us

JUNI serves as the central hub for innovation and entrepreneurship in Berlin-Brandenburg. We bring together students, researchers, founders, universities, corporates, policymakers, and investors to create a dynamic and collaborative ecosystem. Our mission is to make the startup journey as straightforward as possible, enabling founders to focus on what they do best: building impactful companies.