ruby English-speaking jobs in Bielsko-Biała

PhD student will conduct research on atomic scale dynamics in glasses and high entropy alloys using molecular dynamics. Develop machine learning models to predict material properties and guide the design of stable disordered materials.

Manage end-to-end localization projects for Product and Marketing content, ensuring high quality and timely launches. Collaborate with stakeholders to optimize workflows and implement AI-first solutions.

Data Scientist to develop and deploy AI-powered solutions for production efficiency in aviation. Responsibilities include analyzing data, designing AI models, and collaborating with stakeholders. Requires experience with machine learning, computer vision, generative AI, cloud environments, and Python.

Frontend Developer to build modern, scalable, and user-friendly digital products. Responsibilities include developing new features, maintaining existing ones, and collaborating with designers and backend developers. Requires 3+ years of experience as a Frontend Developer, proficiency in React and TypeScript, and experience with Vue.js and CMS platforms.

Analyzes sustainability data from various sources, ensuring accuracy and timeliness for reporting. Manages data cleaning, validation, and quality checks. Develops and maintains dashboards in Power BI to track progress. Supports process optimization and system enhancements.

Manages moderate to complex infrastructure-related projects for VisaNet clients in the EU region. Provides project management support, consultation, and subject matter expertise for network, server, and application configuration. Coordinates with internal and external resources to ensure project deliverables are met.

Investigate, validate, and resolve customer deductions and disputes to maximize revenue recovery. Analyze data, communicate with customers and internal stakeholders, and document findings. Proficiency in English (B2) and Dutch (B1/B2) required.

Manage, maintain, and optimize database systems on AWS, Azure, or GCP. Expertise in Aurora MySQL, Aurora PostgreSQL, and DynamoDB required. Collaborate with DevOps on Terraform implementation and CICD tools.

International Senior Tax Expert advising business units and subsidiaries on international tax law, focusing on transfer pricing, permanent establishments, and compliance. Coordinates cross-border transactions, defines global tax guidelines, and manages tax audits. Requires 5+ years of international tax experience, expertise in transfer pricing and permanent establishments, and fluency in English. German language skills are advantageous.

Business Analyst with 3+ years' experience in financial institutions, specializing in credit analysis and customer service. Designs business processes, IT solutions, and documentation. Requires fluency in English and Polish, and knowledge of Jira, Confluence, and SQL.

Design, develop, and deploy AI solutions across the full AI lifecycle. Integrate and extend cloud-native AI services (Azure, AWS, GCP). Train, fine-tune, and optimize machine learning models.

Design and govern agentic interfaces between customer applications, enterprise systems, and AI service layers. Translate complex customer workflows into domain-specific agent skills, context models, and interaction patterns.

Office Manager / Executive Assistant will support internal operations and external communication for a data intelligence startup. Responsibilities include HR coordination, accounting liaison, executive support, and project management. Must be based in Poland and possess strong organizational, communication, and problem-solving skills.

Digital Asset Operations Senior Manager will contribute to the design and implementation of self-custody processes and procedures. The role requires knowledge of traditional investment services business operations and next generation technologies including DLT, blockchain, and digital custody. This position will manage risks, resources, and stakeholder communications, and involve people management activities.

Senior AI Engineer will design, develop, and deploy advanced ML/NLP products for intelligent conversational systems in the recruiting industry. Responsibilities include architecting agentic workflows, leading model training and evaluation, and collaborating with product and engineering teams. Requires 5+ years of experience developing and deploying machine learning systems, expertise in NLP techniques and deep learning frameworks, and strong Python programming skills.

About Cronos Europa Cronos Europa is a leading IT and digital transformation partner dedicated exclusively to European Institutions and agencies, delivering mission‑critical solutions that shape Europe’s digital future.

Lead R&D initiatives and projects related to transient protection of distribution transformers. Reinforce transient calculations capabilities within design systems. Collaborate with engineers and stakeholders to ensure alignment of transient mitigation strategies. Contribute to IP disclosures and support junior engineers.

Finance & Tax Intern supports the Tax Department in daily operations and projects, gaining practical experience in tax and finance processes. The internship starts in July and lasts for 7 months.

Android Developer needed for a mobile application supporting field team scheduling and inspections. Responsibilities include designing, developing, and implementing Bluetooth modules for robot interaction. Requires 3+ years of Android development experience in Kotlin and strong communication skills.

Role OverviewWe are seeking a Logistics Specialist to join our team and manage Huntsman Performance Product’s logistics operations across EMEA. This role will focus on managing Logistics Provider relationships, coordinating shipments, and ensuring all logistics processes run smoothly and safely.