Senior Software Engineer (Search) (m/f/x)

Berlinfull-timesenior

Software EngineerSoftware Engineering

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Quick Summary

Key Responsibilities

Own search at Cortea. You’ll design and ship retrieval, ranking, and evaluation systems that power our AI agents. You’ll also build the data pipelines behind them.

Requirements Summary

5+ years as a software engineer or applied scientist with hands-on information retrieval work IR fundamentals: BM25, TF-IDF, and neural retrieval Evaluation: comfortable with NDCG, MRR, Precision@K and when to use each Data & software: Python…

Technical Tools

bigqueryelasticsearchpandaspythonsnowflakesqlab-testingetl

We’re Cortea, a Berlin startup transforming audits with AI. Manual, document-heavy audits waste expert time; we automate the repetitive parts so experts focus on judgment. Backed by top-tier VCs with €10m+ funding, live product, paying customers. We value first-principles thinking, speed, trust, and kindness. We build side by side in our Berlin office.

Own search at Cortea. You’ll design and ship retrieval, ranking, and evaluation systems that power our AI agents. You’ll also build the data pipelines behind them. You’ll work closely with product, design, and founders to turn messy, real-world documents into precise answers.

Responsibilities

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Build and tune retrieval and ranking: lexical + neural
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Own evaluation: datasets, metrics, dashboards, and regressions
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Design data pipelines for ingestion, enrichment, and classification
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Ship production code: Python services, APIs, SQL models, tests
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Improve relevance through experimentation and systematic analysis

Requirements

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Nice to Have

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What We Offer

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✓High impact & growth: Shape strategy at a scaling AI startup from day one

✓Mission-driven culture: Ambitious team valuing first-principles thinking and bold ideas

✓Competitive compensation: €100-€130k salary plus significant equity

✓Personal development: Learning budget for courses and conferences

✓Startup perks: Flexible vacation, team lunches, retreats, central Berlin office

First Call — Intro to Cortea with our Founders Associate Leon
Second Call — Technical interview with Jendrik
Third Call — Deep dive into our culture with Philipp
On-site Half-Day (Berlin) — Meet the team and work on a real problem together

We’re an equal-opportunity team and encourage women and underrepresented groups to apply.