ruby English-speaking jobs in Bielsko-Biała

Financial Controller needed to provide financial analyses, cost control, and budget variance analysis. Collaborate with stakeholders, participate in BI system implementation, and prepare month-end reports. Requires fluency in English, Excel expertise, and accounting knowledge.

Software Engineer will research, design, and optimize complex C/C++ systems using static analysis tools. Responsibilities include creating unit tests, conducting code reviews, and collaborating with a UK-based team. Must have proficiency in C/C++, experience with build systems and static/dynamic code analysis, and practical experience with Linux-based embedded systems.

ING Hubs Poland seeks Agentic AI Engineers to design, build, and scale AI solutions. Experience with Python, microservices, APIs, and cloud-based systems is required. Familiarity with LLMs, agentic AI concepts, and frameworks is essential.

Lead a team of product analysts, shaping strategy and driving data-driven decisions for customer support and internal tooling products. Own the analytics vision for the Tools & Workflow domain, partnering with cross-functional teams to evaluate product opportunities and measure automation impact.

Commercial Business Analyst will develop and communicate business reports, monitor sales and GP performance, and support pricing strategies. The role requires experience in business analysis, financial forecasting, and proficiency in Salesforce.com and MS Office Suite.

Lead Data Engineer will design, build, and maintain scalable data pipelines to ingest, transform, and curate structured and unstructured data. Responsibilities include leading architecture decisions, implementing best practices, and mentoring other data engineers. Requires a Bachelor's or Master's degree in a related field and 7+ years of experience in data engineering.

Leads and develops a team of Personnel Administration and Payroll (PA/PY) specialists, ensuring efficient service delivery in line with global procedures and local legal requirements. Supports co-workers with PA/PY related topics, supervises payroll activities, and resolves issues. Recruits new team members and coordinates training. Collaborates with the Project Manager to transfer services from a new GBO Country (Sweden).

Java Developer needed for the development of a Digital & Data Hub in Krakow. Design, implement, and deliver robust and scalable solutions using Java, Spring, and Spring Boot. Experience with RESTful services, unit testing frameworks (JUnit), and containerization tools (Docker, Kubernetes) is required.

Data & BI Analyst will support Supply Chain transformation projects, design datasets, and lead data harmonization initiatives across European plants. Requires a Master's degree in Engineering with a focus on Data Analytics, 3+ years of experience, and expertise in Power BI, DAX, and SQL. Fluency in English is required, French or Dutch is a plus.

Process payment flows, analyze data, and recommend solutions to operational problems. Collaborate on projects, understand operational interdependencies, and assess risk. Bachelor's degree preferred, SWIFT knowledge is an asset.

Andersen is seeking an MLOps Engineer to design and implement scalable, secure, and cost-efficient MLOps solutions on AWS and Databricks. Responsibilities include automating ML deployment pipelines, collaborating with data scientists, and ensuring platform reliability.

Junior Billing/AR Professional will coordinate case setup, invoicing, and expense management for Private Equity Group engagements. The role requires 2-3 years of experience in Accounts Receivable, Billing, or Revenue roles and strong analytical and Excel skills. Fluency in English is required.

Embedded firmware developer internship for 4th year students in Kraków. Develop driver functions in Nordic Connect SDK, Zephyr, and nrfx. Strong C programming and embedded systems experience required.

Legal Department Intern will support legal operations across Central-Southern Europe and International regions. Responsibilities include drafting legal opinions, assisting with contract preparation, and providing administrative support. Must be a current law student in their 3rd or 4th year with excellent English proficiency and strong communication skills.

Provides technical support to customers integrating D&B data products via API. Guides customers on architecture, requirements, API calls, and QA processes. Resolves issues and offers best practices. Documents implementation progress and acts as a product expert.

Senior Data Scientist will develop and deploy machine learning, deep learning, and AI methods to analyze large datasets. Responsibilities include collaborating with engineers to translate algorithms into products, performing data analyses, and generating reports. Requires a Master's degree in a relevant field and demonstrated skill in analytic tools and techniques.

Experienced back-end engineer needed to design, implement, and mentor on features and services. Expertise in Ruby on Rails, Python, PostgreSQL, MongoDB, and OpenSearch required. Strong communication and leadership skills essential. Familiarity with AWS and container technologies a plus.

Data Engineer will design, deliver, and evolve scalable data engineering capabilities for Data Science, AI, and client-facing products across European markets. Responsibilities include translating business needs into data models, building and managing ETL processes, and ensuring robust operational data management systems. The ideal candidate will be proficient in big data tools, programming languages, and have strong analytical skills.

Payroll Specialist will manage end-to-end payroll for the Poland entity, ensuring compliance with Polish labor laws and tax regulations. Responsibilities include processing payroll, managing statutory components, and partnering with HR and Finance. Requires 5+ years of Polish payroll experience, a bachelor's degree, and proficiency in payroll systems.

Designs, develops, and deploys AI agents capable of understanding goals, planning actions, and executing tasks. Requires strong understanding of AI principles, agent-based systems, machine learning, and software engineering best practices.