Backend Python Engineer

m/f/d, Genf

Job profile (TM58E9)

IT - Software Engineering
Genf
Contracting
Full Time
01 November 2026 - 24 months, with a possible extension up to a maximum of 36 months
Python

For our client in Geneva, we are looking for a Backend Python Engineer to join an international scientific environment and contribute to the development and modernisation of large-scale information platforms. In this role, you will work on backend services, data pipelines and search technologies that support scientific discovery and open access for researchers worldwide.

As part of the Tools and Services team, you will help evolve platforms that manage scientific publications, research data and digital archives. Your focus will be on building scalable backend solutions, improving data processing workflows, enabling AI-driven access to scientific content and ensuring reliable production systems.

Your Task:

Design, develop and operate backend services using Python
Build and maintain scalable data ingestion and processing pipelines for scientific metadata and full-text content
Modernise existing ingestion workflows and migrate processes to Apache Airflow
Design and implement robust REST APIs for internal applications, partners and external tools
Develop and optimise search capabilities using OpenSearch, including indexing strategies and relevance tuning
Support the integration of AI-driven retrieval solutions and Model Context Protocol services
Improve data quality through enrichment, deduplication and automated processing workflows
Contribute to the modernisation of digitisation and archival services
Support large-scale data migrations while ensuring metadata consistency and quality
Develop containerised applications and support modern deployment processes
Implement automated testing, code reviews, monitoring and CI/CD practices
Contribute to open-source software and support the Open Science community

Your Profile:

University degree in Computer Science or a related field with relevant professional experience
Strong professional experience in backend development with Python
Hands-on experience with Python frameworks such as Django, Flask and FastAPI
Solid experience designing and developing REST APIs
Strong understanding of relational databases such as PostgreSQL and document databases
Practical experience with search technologies such as OpenSearch / Elasticsearch, including indexing and relevance tuning
Experience with Docker, Kubernetes, Git and CI/CD pipelines
Knowledge of asynchronous programming, automated testing and software engineering best practices
Experience with large-scale data processing, metadata-driven systems and data pipelines
Experience with Apache Airflow or similar workflow orchestration tools is an advantage
Knowledge of AI-driven retrieval systems and AI/LLM integrations is a plus
Familiarity with digital archiving, content management systems or scientific information platforms is an advantage
Strong analytical and problem-solving skills with a focus on developing reliable, scalable and maintainable software solutions
Proactive, quality-oriented team player with strong ownership and ability to work effectively in multicultural environments
Excellent spoken and written English skills