Senior/Staff AI Engineer, Quality & Evals (m/f/x)

Meyandy LLC; Berlin; Hybrid; EUR 90.000 - 120.000; Vollzeit

Zusammenfassung

Cortea, a Berlin startup, is seeking an engineer with strong backend, data, and AI systems experience to build the evaluation and observability foundation for production-grade LLM agents used in audit workflows.

You will design and operate online and offline evaluation pipelines, implement quality gates, analyze traces in BigQuery/ClickHouse, and manage observability tools, collaborating with backend engineers to improve retrieval and reasoning capabilities.

Qualifikationen

• Experience building production-grade backend and data systems for AI pipelines.
• Strong Python programming and backend engineering skills.
• Knowledge of LLM evaluation, prompts, and quality metrics.
• Cloud deployment experience, preferably GCP.
• Ability to work across data infra, observability, and AI quality.

Aufgaben

• Build online and offline evaluation systems for LLM agents and audit workflows.
• Create automated quality gates to test prompts, context, and models before production.
• Analyze large agent traces in BigQuery/ClickHouse to identify failures and cost optimizations.
• Develop data retention and replay mechanisms for long-term analysis.
• Manage observability tooling for tracing, monitoring, and experiment management.
• Collaborate with backend engineers to improve retrieval and reasoning agents.

Kenntnisse

Backend engineering

Data infrastructure

AI systems

Python

LLM evaluation

Tools

Braintrust

MLflow

Langfuse

Weights & Biases

Jobbeschreibung

About usWe’re **Cortea**, a Berlin startup **transforming audits with AI**. Manual, document-heavy audits waste expert time while demand keeps rising. Our **AI-powered software and specialized AI agents** remove the repetitive work so auditors can focus on judgment.Backed by top-tier VCs with >15m EUR funding, with a working product and paying customers, we’re rapidly scaling.We value **first-principles thinking, speed, trust, and kindness**. We build side by side **in our Berlin office**.Your RoleWe are looking for an **engineer with strong backend, data, and AI systems experience** to build the evaluation and observability foundation for production-grade LLM agents used in complex audit workflows.This role sits at the intersection of **backend engineering, data infrastructure, and AI quality**. You will build the evaluation systems that power our multimodal retrieval agents and continuously improve critical quality metrics across current and future pipelines.You’ll work at the edge of applied AI and information retrieval, building multimodal agentic pipelines and solving hard context and agent-harness engineering problems.This is **not** a traditional analytics, BI, or dashboarding role. You should expect to write production code, design data architecture, work inside backend systems, and directly improve the quality, cost, reliability, and performance of LLM-based agents.What you’ll doYou will help build and operate the technical systems around our AI agents, with a focus on data infrastructure, evaluation, observability, and optimization. You will:* Build online and offline evaluation systems for LLM agents, including pipelines that use golden datasets, ground-truth data, human review workflows, and experiment results.* Create automated quality gates so changes to prompts, context, models, or agent logic can be tested before reaching production.* Analyze large volumes of agent traces and executions in columnar and analytical databases such as BigQuery or ClickHouse to identify failure modes, quality regressions, latency issues, reliability gaps, and cost optimization opportunities.* Build reliable data retention and replay mechanisms for long-term analysis of production agent behavior.* Manage observability tools for tracing, monitoring, debugging, and experiment management of our audit agents.* Team up with backend engineers to improve the speed and reliability of our retrieval and reasoning agents.You will fit into the role if you...* Have strong Python and/or backend engineering experience.* Have a solid understanding of how LLM and agent systems are evaluated—including deterministic checks, ground truth, LLM-as-judge, human review, and quality metrics—and can reason about when each approach is appropriate.* Have deployed and operated systems in the cloud, ideally on GCP.* Have hands-on experience building end-to-end retrieval or ML pipeline evaluation systems and using LLM observability or experimentation tools such as Braintrust, MLflow, Langfuse, or Weights & Biases.* Are comfortable working with analytical databases, data warehouses, columnar stores, and high-volume event or trace data.* Understand system design, reliability, observability, monitoring, logging, debugging, and operational trade-offs.* Bring senior-level engineering judgment: you can make architectural decisions, communicate trade-offs, and build systems that other engineers can extend.* Are comfortable with ambiguity, able to reason from first principles, and excited to build infrastructure for AI systems that are actively used in production.## Nice-to-haves that are a plus:* Designing data pipelines, ETL/ELT workflows, event-processing systems, or feedback loops for production data.* Building infrastructure around LLM-based products or agentic systems, including optimizing LLM usage, context windows, reasoning tokens, or model selection.* Working with production traces from complex distributed systems.* Building internal platforms for engineers,...