javascript English-speaking jobs in Bytom

Senior QA Engineer to champion application quality and user experience. Refine requirements, identify gaps, and perform exploratory and structured testing (UI and API). Build deep product knowledge and contribute to test automation using Playwright (TypeScript/JavaScript).

Senior Business Development Manager to drive new business acquisition and revenue growth within the Digital Goods and Online Services vertical. Responsible for identifying, qualifying, and engaging high-potential merchants across Europe. Proven track record in closing enterprise-level deals with e-commerce merchants is required.

The Administrative Services Specialist provides back-end administrative support, focusing on structured processes, data management, and planning and coordination. This role helps main business process execution with maintaining accurate records, process documentation, and assisting with system-related tasks. Fluency in German and English is required.

Implement and customize Salesforce solutions for insurers and banks. Configure, integrate, and customize Salesforce software to meet client needs. Create, design, and implement state-of-the-art solutions.

Alfa Laval Kraków seeks a TMS Specialist to manage and implement settings within the Transport Management System and Trade Compliance Management. The role involves daily support of integrated TMS environments, problem-solving, and acting as a point of contact for internal and external stakeholders. Experience with IT systems, export companies, and excellent English skills are required.

Lead end-to-end response to high-priority cybersecurity incidents, coordinating from detection to closure. Rapidly assess, triage, and prioritize incidents, delegate tasks, and provide regular status reports. Possess strong experience in Information Security Incident Management, including large-scale, complex cases and best practices. Hold a Master's degree and/or have 5+ years in incident handling, security operations, or IT incident management, with a track record of leading teams. Possess or are pursuing advanced security certifications (e.g., CISSP, CISSP-ISSAP, CISM).

This role focuses on business development and project delivery for EU space and digital clients. Responsibilities include leading account growth, managing projects, building client relationships, and driving innovation. The ideal candidate has a minimum of 7 years of experience in business development, account management, consulting, or public-sector advisory, with at least 3 years in the space or defense sector. Experience with EU Space Programme components and project management is required.

Senior Data Engineer to design, build, and own scalable data pipelines and architectures in Snowflake. Experience with dbt, Snowflake optimization, and ELT pipelines required.

Manages, develops, and grows qualified leads and sales pipeline. Qualifies inbound leads and conducts outreach via phone, email, social media, and chat to drive engagement and schedule meetings for sales representatives. Supports demand generation efforts by promoting and following up on in-person and virtual events.

Lead Go Developer needed for a project building a scalable distributed platform for a global insurance and assistance company. Responsibilities include collaborating with Product Managers, leading code reviews, and driving improvements in CI/CD pipelines. Must have 5+ years of experience in Golang, concurrency patterns, system design, and CI/CD tools.

Inside Sales Specialist will manage transactional accounts and represent the LGC Standards product portfolio across multiple industries, focusing on the Polish and Eastern European market.

Media Buyer (Contractor) to drive return on ad spend through paid ads for e-commerce clients. Execute paid media strategy, audit ad accounts, and use data to inform ad account optimizations. Must have at least two years of experience running Meta and TikTok Ads for e-commerce brands.

As a Sales Development Representative, you will generate new business opportunities through proactive outreach and lead discovery. You will identify prospects, provide product information and quotations, and collaborate with colleagues on sales activities.

Designs and maintains scalable data pipelines in AWS for analytics and ML use cases. Develops and optimizes SQL transformations and analytical datasets. Builds reliable ETL/ELT processes with monitoring and data quality checks.

Software Developer in Test will design and build AI-driven test automation frameworks using Playwright and LLMs to generate, maintain, and optimize test suites. This role requires strong C#/.NET or TypeScript experience, hands-on Playwright automation framework development, and proven experience using AI coding tools.

Design, build, and maintain data pipelines for collecting, transforming, and storing data. Integrate data from various sources, including cloud platforms, databases, APIs, and external services. Optimize and troubleshoot pipelines to ensure high performance and reliability.

The Associate Territory Manager Poland will support business goals by developing account plans, representing BioMarin at medical events, and achieving sales objectives. Requires a Pharmacist, MD, or BS/BA in life sciences with 3+ years of pharmaceutical or biotech sales experience.

Design, develop, and implement predictive models and statistical analyses to uncover patterns and trends within structured and unstructured data. Collaborate with cross-functional teams to identify business challenges and formulate data-driven solutions. Conduct comprehensive data analysis, including data cleansing, feature engineering, and model evaluation. Apply advanced machine learning techniques to develop state-of-the-art models.

Head of UX/UI Design will own final UI/UX decisions for the product. Responsibilities include designing and implementing UX solutions directly in code using Tailwind and reusable UI components, ensuring UI quality and clarity, and collaborating with Product, CRO, and Engineering teams. Requires a senior Product UI/UX Designer / UX Engineer with a deep understanding of both UI and UX, practical front-end coding skills, and experience with Tailwind CSS and component-based UI systems.

Cyber Governance, Risk & Assurance Consultant will operationalize governance, risk & assurance processes for the Fresenius Group. Responsibilities include overseeing cyber threats, conducting risk assessments, developing risk treatment plans, and maintaining a centralized risk register.