IESF AG, a member of the IESF Group International, operates as a premier executive search firm headquartered in Zurich, Switzerland, with affiliates in Germany and Bulgaria. Leveraging its membership in a top 25 global executive search network, the company specializes in talent acquisition and executive recruitment across diverse sectors including Life Sciences, Finance, Medical Devices, FMCG, IT, Manufacturing, Chemicals, Luxury Goods, Retail, Logistics, and Call Center Services. In addition to placement services, IESF AG provides strategic management consulting and market expansion support to help clients grow internationally. Its distinctive value lies in combining a deep global network with localized expertise and comprehensive advisory offerings to deliver tailored, high-impact solutions for senior leadership needs.
Open Positions
Senior Semantic Web Implementation Specialist - Contractor / B2B
University degree in IT or relevant discipline combined with 7 years of relevant experience
PHP/Symphony Full Stack Developer
15+ years of IT experience, university degree in IT, strong hands-on experience with PHP and Symfony
Senior Web3 Back-End Developer - fully remote
3+ years of experience, strong web3 expertise, and solid understanding of EVM internals
Senior AI / ML Engineer (Python)
Minimum 7 years of IT experience, 5+ years of AI/ML experience, Python development experience
Ontology & Semantic Technologies Expert
University degree in IT or relevant discipline, 4 years of relevant professional experience, and specific experience in RDF, OWL, Java, Python, Linux, databases, and querying
Semantic AI & Cloud Solutions Engineer - Hybrid
University degree in IT or relevant discipline, combined with minimum 4 years of relevant working experience in IT
Senior PHP Developer (Symphony)
At least 15 years of experience in IT, degree in IT or related field, and deep expertise in PHP Symfony framework
Senior PHP Developer
4+ years of PHP Dev experience, PHP 8.3, Symfony, API Platform, legacy code maintenance, Docker, GCP, microservices, PostgreSQL, Pub/Sub, unit/Behat tests, agile/SCRUM
Senior Web3 Developer
3+ years of web3 backend experience, strong smart contract skills, and experience with web3 tools
Senior Java Engineer - remote, within EU
Bachelor's degree in IT, 9+ years of professional experience in development, and expertise in Java 8+, Spring, Spring Boot, Java EE, and Hibernate