24 English-speaking jobs in Jena

Are you looking for a profitable scale-up that offers you long-term prospects and a disruptive business model with a growth-oriented corporate culture? Do you also want to grow beyond the usual standards, bring your own initiative and appreciate actively shaping topics? Then yoummday is the right place for you!

Working Student in Data Science research focusing on data analysis and machine learning. Tasks include literature review, EDA, developing algorithms for time series and anomaly detection, and testing methodologies. Requires studies in related fields and Python skills.

Lead product-focused R&D across Occlutech, reporting to the CEO. Set innovation direction, guide products from concept to serial production, and manage R&D teams in Jena and Istanbul.

Internship in Photonic Quantum Systems focusing on Spatial-Mode Demultiplexing (SPADE). Responsibilities include designing, building, and characterizing optical setups for super-resolution imaging. Requires knowledge of Modern Optics.

Site Construction Manager for offshore platform fabrication and delivery. Lead site engineers and QC personnel, ensuring high-quality execution per standards. Requires engineering/construction background and international site management experience.

Applications Engineer supports quality assurance during advanced laser-based system integration. Responsibilities include process analysis, root-cause analysis, and yield improvement using microscopy, optics, and chemistry knowledge. Requires a practical background in a technical field.

Assemble, align, and validate complex laser-based platforms, working with optics, electronics, and motion hardware. Run integration tests, diagnose issues across optics and software, and support new product introductions.

Senior Scientist leads and coordinates innovative, AI-driven optical system design projects. This role requires a PhD and experience leading complex technical initiatives, focusing on model and data-driven workflows and stakeholder management.

Scientist role focusing on GeoAI and multilingual geo-parsing. Tasks involve designing methods for extracting, processing, and annotating large, heterogeneous text datasets using data science and LLMs.

Research Associate in Theoretical Chemistry/Computational Materials Modelling for a DFG-funded project on ammonia synthesis. Focus includes quantum-chemical calculations, structure analysis, and mechanistic studies using DFT and molecular dynamics.

Seeking a customer-focused IT Service Delivery Specialist to manage IT service operations, handle incidents, and drive continuous improvement. Requires ITIL knowledge, ITSM tool experience, and technical support skills.

Design, train, and scale state-of-the-art LLMs and RL systems. Requires expertise in large-scale distributed training on 500+ GPUs, PyTorch, and low-level optimization.

Internship in Photonic Quantum Systems focusing on Spatial-Mode Demultiplexing (SPADE). Responsibilities include designing, building, and characterizing an optical setup using Hermite–Gaussian modes for super-resolution imaging. Requires knowledge of Modern Optics.

Develop and maintain safety PLC solutions and architectures. Conduct risk assessments and safety analyses. Create safety concepts and documentation, supporting verification, validation, and troubleshooting. Requires experience in functional safety and industrial automation.

Principal Expert Researcher to lead architectural development of groundbreaking optical imaging products. Responsibilities include designing mobile phone imaging lenses, overseeing the full design cycle, and driving technological innovation.

Function Architect drives hardware development excellence for complex semiconductor systems. Responsibilities include translating system requirements into functional architectures and managing interdisciplinary interfaces. Requires 8+ years in technical product development.

Doctoral Researcher in Machine Learning for Virus Data Integration. Design and train representation models for integrating multi-modal virus data within a predictive deep learning framework. Requires an MSc in a relevant field and strong ML/deep learning skills.

Experienced software professional sought as Function Owner in Semiconductor Mask Solutions. This role owns the Software Function in R&D, bridging strategy and delivery, managing the backlog, and ensuring software release quality.

Research Associate position focusing on glass-based materials for neonatal sensing. Responsibilities include designing inorganic glass for dye/phosphor encapsulation and characterizing fiber-optical sensor architectures. Requires a Master's or Ph.D. in Chemistry, Materials Science, or Physics.

Customer Support Engineer performs on-site installations, service, and maintenance of complex semiconductor equipment. This role involves troubleshooting, defining corrective actions, and training support teams.