Data Engineer

The position of Data Engineer is offered by SII Switzerland, a consultancy that delivers IT and engineering expertise to clients undergoing digital change. The firm operates from offices in Zurich, Geneva and Lausanne and belongs to the wider SII Group, which provides technology services across more than twenty‑one nations. In this role you will craft and expand data pipelines that move massive, intricate datasets, employing both scripted and visual solutions. You will turn detailed business workflows into logical data structures that serve the whole organisation, set up automated checks to assure data quality and traceability, and produce high‑performance PySpark and SQL code to cleanse, summarise and ready information for downstream use. Close cooperation with data scientists, analysts and various business units will be essential to convert their needs into reliable production‑grade data assets. Applicants need to have early‑stage hands‑on experience in data engineering, whether through internships or 1‑3 years of professional work. Proficiency in Python, particularly within a big‑data setting using PySpark, and the ability to write sophisticated SQL queries are required. A solid understanding of contemporary data architectures such as lakehouse or distributed systems, plus familiarity with both relational and non‑relational stores, is expected. Candidates should display an analytical approach, work methodically, and show a strong desire to acquire new skills. Fluency in English is mandatory; German is advantageous. The job starts in September on a permanent basis in Zurich. SII Switzerland enjoys a reputation as a Great Place To Work and is listed among the top workplaces in the French‑speaking