hr English-speaking jobs in Legionowo

Senior Python Full-Stack Engineer to build scalable backend services and intuitive frontend experiences using React. Develop and maintain a next-generation endpoint protection and detection platform. Collaborate in an Agile environment and utilize AI-powered development tools.

Amer Sports Global Business Center seeks a Purchase to Pay Accounting Assistant to support invoice processing for North America entities. The role involves working with the SAP system, matching invoices to purchase orders and goods receipts, managing vendor open items, and ensuring timely processing in compliance with service level agreements.

Implement, upgrade, and support Elasticsearch solutions. Provide L2/L3 support and assist in cloud migration. Collaborate in a global Agile Scrum environment.

Senior JavaScript Engineer will build new editor capabilities for SuperDoc, an open-source document editor. Responsibilities include diving deep into MS Word OOXML parsing, designing AI integrations, and collaborating with co-founders, sales, and customers.

Experienced Senior / Lead PHP Developer needed for email & performance marketing systems. Requires 10+ years experience, expert PHP (Symfony), JavaScript, Python, and large-scale database knowledge. Must have experience with ESPs (SARE, Elastic Email, etc.), API integrations, and mass mailing systems. Responsibilities include designing, developing, and maintaining email delivery systems, managing OVH environments, and collaborating with marketing and data teams.

Fullstack Java Developer to design and develop web and back-end applications. Requires 6+ years of experience, strong Java 11/17, ReactJS, TypeScript, and Spring skills, and experience with relational databases.

Motivated intern to support operations, business management, and customer relations. Assist with reporting, research, and project tasks. Contribute to team initiatives and collaborate with colleagues.

Business Analyst to join consulting or implementation teams for IT projects in the financial sector, primarily insurance. Responsibilities include business analysis, defining functional requirements, testing solutions, and collaborating with developers and architects. Requires a bachelor's degree, fluency in English (C1 level), and strong French (B2/C1 level).

The Developer Platform team builds and maintains robust infrastructure for Splunk engineers to develop and deploy software. Responsibilities include designing, building, and improving CI/CD pipelines, developing tools for engineers, and mentoring junior team members. Requires experience with CI/CD tooling, cloud infrastructure, containers, and virtualization, as well as strong Go and Python skills.

Senior Android HMI/Kotlin Engineer will design, develop, and maintain efficient, reusable, and reliable code for an in-vehicle infotainment project. Responsibilities include requirement analysis, implementing performance and quality services, identifying and resolving bugs, and mentoring team members. Requires 5+ years of Java and Kotlin development experience on Android, understanding of Android Application Framework, and experience with Android Services, AIDL & Binders.

Data Scientist to design, develop, and maintain risk models using machine learning techniques. Responsibilities include retraining models, building data marts, and contributing to automation tools. Requires 2+ years of experience in credit scoring, proficiency in Python and machine learning libraries, and experience with cloud platforms.

Senior Business Analyst will drive process improvement initiatives, collaborate with stakeholders to define requirements, and translate business needs into functional specifications. Responsibilities include creating documentation, supporting business users, and acting as a liaison between business and IT teams. Requires a degree in a related field, 5+ years of experience as an IT Business Analyst, and proficiency in tools like Jira, Confluence, Microsoft Power BI, and Tableau.

Develop and improve ML models, collaborate with teams on production models, and maintain models in production. Experience with LLMs, RAG architecture, and agentic systems is required. Strong Python, Docker, and data pipeline experience is also needed.

Manages cloud systems and IT systems. Performs operational tasks, ensures system reliability, resolves issues, and maintains system security. Requires experience with AWS, Linux, and 3+ years of relevant experience.

UX Design Researcher to support projects in pathology laboratory automation and prenatal risk calculation. Responsibilities include leading user research, collaborating with stakeholders, and creating mockups for usability testing. Requires 5+ years of experience, knowledge of user-oriented design, and proficiency in Figma, Adobe suite, HTML, CSS, and JavaScript. Fluency in Polish and English is required.

Provide technical support to customers via telephone, diagnosing and resolving hardware, software, and network issues. Coordinate with vendors and internal support teams. Document and manage problems using a call tracking system.

Teaching Assistant position at the Faculty of Law in Warsaw, Department of Roman and Comparative Law. Duties include conducting teaching classes, carrying out organizational activities, and enhancing academic teaching skills.

Lead the design and deployment of AgenticAI-powered architectures across C2C, P2P, and R2A domains. Architect modular, scalable, and secure agentic systems that integrate with ERP, procurement, and finance platforms.

Senior Java Developer will design, implement, and maintain Java applications. Responsibilities include producing design specifications, analyzing user requirements, and conducting software analysis, testing, and debugging. The successful candidate will have experience with the entire software development process, Amazon Web Services or Microsoft Azure, and relational databases.

Provide technical assistance and support to partners, troubleshooting and resolving issues. Collaborate with internal teams and partners to ensure service and support readiness. Contribute to the knowledge base and participate in trainings.