Engineering Internship - AI/Data

Salary: CHF 30’000 - 55’000 per year

Requirements:

• Near completion of your degree (e.g., finished Masters program or close to graduating).
• Degree in Computer Science, Data Science, or a related field (in progress) — or equivalent practical experience.
• Solid programming skills (preferably TypeScript/Node.js).
• Comfortable with data structures, algorithms, and working with real-world data (edge cases, messy inputs).
• Working knowledge of SQL (ideally PostgreSQL).
• Interest in applied AI/ML systems (LLMs, embeddings, retrieval, evaluation) and willingness to learn fast.
• Strong ownership mindset and clear communication in English.
• Availability full-time for the internship, ideally 6 months. On-site in Zurich at least two days per week (hybrid).

Responsibilities:

• Help build and improve ingestion and processing pipelines (APIs, bulk imports, parsing, normalization).
• Support chunking, metadata extraction, citation handling, labeling/tagging, and schema design so downstream AI works reliably.
• Assist with indexing strategies, embeddings, hybrid retrieval, reranking experiments, and relevance tuning.
• Build small eval sets, run experiments, analyze failure cases, and help turn findings into shipped improvements.
• Prototype and implement pragmatic LLM workflows (summarization, classification, extraction, RAG components) with attention to cost/latency.
• Write clean TypeScript code, add tests where appropriate, and improve observability (basic metrics/logging) for pipelines/services.
• Work closely with engineers and domain experts; document decisions and share learnings clearly.

Technologies:

• AI
• OpenSearch
• Azure
• CI/CD
• Cloud
• Docker
• ElasticSearch
• Support
• LLM
• PostgreSQL
• SQL
• TypeScript
• NodeJS

More:

- Title: Engineering Internship - AI/Data
- Department: Engineering
- Status: Open
- Location: Zurich

About You
Youre in the final stretch of your studies (in particular graduated Masters student or close to graduation) and you want a hands-on internship where you build real AI/data systems that ship to production. You enjoy working with messy data, writing solid code, and running experiments to improve search and LLM-powered features. You learn fast, take ownership, and like collaborating closely with a small team.

About Omnilex
Omnilex is a young dynamic AI legal tech startup with its roots at ETH Zurich. Our passionate interdisciplinary team is dedicated to empowering legal professionals in law firms and legal teams by leveraging the power of AI for legal research and answering complex legal questions. We work at the intersection of search, data engineering, and modern LLM systems—where quality, traceability, and user trust matter.

Benefits
- Direct impact: Your work ships into the product and improves real user outcomes.
- Learning & mentorship: Hands-on exposure to production AI/search/data systems in a high-ownership environment.
- Breadth: Work across ingestion → indexing → retrieval → LLM workflows → evaluation.
- Team: Join an interdisciplinary group at the intersection of AI, engineering, and law.
- Compensation: CHF 2500–4500 per month, depending on experience and skills.

Were excited to hear from candidates who are finishing their studies and want a high-impact engineering internship in AI/Data. Apply today by pressing the Apply button.

last updated 9 week of 2026