hr English-speaking jobs in Legionowo

Experienced Global Site Identification Specialist needed to support clinical trials. Analyze data, identify and evaluate potential sites, and manage site outreach activities. Requires clinical research experience, strong data analysis skills, and excellent communication.

Expert Red Team Operator to participate in Red Team exercises (TLPT and TIBER), oversee external vendors, and cooperate with Blue Team and stakeholders during Purple Teaming engagements. Requires 3 years of experience in Red and Purple Team exercises, penetration testing, and experience with regulatory based Red Teaming frameworks (e.g., TIBER, CBEST, iCAST, FEER, AASE). Must have strong analytical skills, proficiency in explaining complex technical concepts, and familiarity with Windows and Linux operating systems, networking, and scripting/coding languages.

Finance Process Transformation Lead will drive strategic transformation and process improvement initiatives across Cash Management and COD operations. The role requires a strong combination of strategic thinking, stakeholder engagement, project leadership, and business process understanding.

Forward Deployed Engineer will design, build, and maintain data solutions using Palantir Foundry. Responsibilities include developing data pipelines, ensuring data quality, and collaborating with cross-functional teams. Requires experience with Foundry Platform, Python, and PySpark.

The Head of Growth, Poland will lead business development and capture efforts, building partnerships and driving market expansion. The role requires strategic leadership, hands-on execution, and deep understanding of the Polish defense ecosystem.

Senior Software Engineer to shape the core intelligence of GraphAware Hume, a graph-powered analytics platform. Build APIs, orchestrate workflows, and optimize application performance. Proven experience in backend systems, Java, and modern software engineering principles.

Java Backend Developer will contribute to the technical design and engineering of applications, developing domain expertise and collaborating with teams to deliver solutions.

The Product Manager (PM) owns Piano's customer-facing checkout surface, responsible for defining and maintaining the product vision, roadmap, and backlog. The PM collaborates with stakeholders to gather feedback, analyze market trends, and drive product development. This role requires expertise in checkout, payments, and subscription commerce, with a focus on conversion optimization and user experience.

MailerLite seeks a Machine Learning Engineer to build and ship predictive models on behavioral and event data. Responsibilities include designing and owning training and inference pipelines, collaborating with product and engineering teams, and fine-tuning LLMs on company data.

Junior AI Developer sought to integrate AI into software development workflows. Must demonstrate coding experience, familiarity with AI-powered tools, and a passion for AI.

Technical Project Manager to oversee the complete project lifecycle for Zero Trust Network Access (ZTNA) initiatives. Experience in network security engineering, ZTNA, and technical project management required.

Lead the development and optimization of Power BI solutions, migrating from legacy platforms and enabling scalable analytics. Translate business needs into technical solutions, improving data models and performance.

Product Manager to develop product vision, roadmaps, and timelines for a FinTech product. Collaborate with stakeholders, conduct market research, and manage product backlog. Requires experience in product management, financial acumen, and strong communication skills.

Technical Business Analyst needed to support digital solutions for handling scientific inquiries. Collaborate with teams to ensure platform efficiency, reliability, and regulatory compliance. Analyze business needs, improve processes, and ensure alignment between business and technology.

Senior Data Analyst to enhance a customer-facing travel platform integrated with an intelligent chatbot. Analyze customer requests and behaviors to improve recommendations. Design, build, and deploy analytics applications using Python, AWS services, and cloud databases. Collaborate with agile teams to deliver semantic search functionality and data-driven services.

Private Doctor providing discreet, high-trust medical care to a UHNW Principal across the Mediterranean. Requires a Western-trained Doctor with 5+ years post-specialisation in Family Medicine, Internal Medicine, or Emergency Medicine, fluent English, and experience in private medicine.

Accounts Receivable Trainee supports the Receivables Team Lead with tasks such as issuing invoices, credit notes, debit notes, and internal clearing transactions. The Intern will also assist with reconciliation of unbilled balances, gathering documents for billing, and ensuring cases are assigned appropriately. Must be a student with a Bachelor's degree in Finance/Accounting, strong English skills, and the ability to work a minimum of 30 hours per week.

Build and maintain backend services and APIs using Java and Python. Work on event-driven data pipelines based on Kafka. Take ownership of services end-to-end: design, testing, deployment, monitoring, and iteration.

Data/MLOps Engineer to design, build, and maintain ML infrastructure. Responsibilities include deploying, monitoring, and optimizing ML lifecycles, building CI/CD pipelines, and collaborating with Data Scientists. Requires strong Python, Apache Spark, and AWS experience.

Intern will support fund administration, valuation, and tax processes for global funds. Responsibilities include reviewing control reports, overseeing NAV calculations, and assisting with tax-related tasks.