8,640 javascript front end engineer jobs in Polska.

We are looking for a Cybersecurity Engineer to join an international project in the automotive industry. In this role, you will be responsible for ensuring product cybersecurity compliance across the full development lifecycle, working closely with cross-functional teams and supporting global standards implementation. You ...

... transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI-Native enterprises, driving measurable value from innovation and digital investments.

... undertaking is foundational to a multiyear strategic roadmap to migrate and leverage cloud technology and outperform the existing stack. Responsibilities Design and own end-to-end solution and application architecture for the strategic platform enabling trade executions to flow from trade capture systems to Operations and Regulatory ...

We are looking for a Senior Data Engineer to support the design, development, and enhancement of our client’s enterprise data platform. The ideal candidate is a hands-on data engineer with strong experience building data pipelines, integrating data from operational databases, and working with modern cloud data warehouses. ...

... event-driven back-end services and data pipelines for their core platform. In this role, you will lead architectural decisions, optimize relational databases, contribute end-to-end across Python and React/TypeScript, champion AI-first engineering practices, and elevate team standards through mentorship and operational excellence. ...

... and automation solutions using Python , JavaScript , and SQL , supporting the full System Development Life Cycle (SDLC). - Develop high-quality, user-focused front-end experiences and interfaces, ensuring usability, clarity, and effective presentation of financial and operational insights. - Engineer back-end services, ...

... handle high-load database operationsImprove query performance across production systemsSupport front-end development efforts using TypeScript and ReactUse GenAI engineering tools to enhance development workflowsWork both collaboratively with the team and independently on assigned tasksMaintain proactive communication with team ...

... owners, architects, and platform engineers, the AI Automation Engineer reimagines how work gets done rather than simply automating existing processes. They own the end-to-end delivery lifecycle—from solution design and prompt engineering through deployment, adoption measurement, and continuous optimization—and serve as the primary ...

Senior QA Automation Engineer We're looking for a Senior QA Automation Engineer to join an enterprise-scale project where automation is at the heart of quality. If you're passionate about building scalable test frameworks and working across web, mobile, and API testing, we'd love to hear from you. What you'll do Build and ...

Optura is seeking a Senior Platform Engineer to design, build, and operate core services powering our AI Platform. You will own systems end-to-end, from model orchestration to routing, reliability, and observability. You will partner with product and application teams to deliver secure, HIPAA-aware services and help customers ...

... effective decarbonization strategies for our clients. Join us and together we can change the world – one trade at a time. Your success story starts here… ABOUT THE FRONT OFFICE Turning opportunities into solutions – that’s the specialty of STX’s Front Office. Our team works across various domains, including electricity, renewable ...

... about us, you’re probably reading this because you’re tired of the typical, chaotic ways of doing things in construction. But in case you haven’t, we’re a high-end project management consultancy and tech developer with a focus on upgrading the way construction projects are delivered. Improving construction strengthens the ...

... Management, IT, Project Management, Finance & Banking, or Business. Celonis Data Engineer or Data Analyst certification will be an asset. Responsibilities: Design end-to-end data architecture for process mining solutions, ensuring scalability, maintainability and alignment with project objectives. Define data engineering standards, ...

A leading recruitment agency is seeking a remote software developer with expertise in the Java stack and front-end technologies like Angular and React. The candidate will be responsible for developing and documenting software solutions, working within an agile team. Required qualifications include a college degree and at ...

... experience with Java and the JVM ecosystem. Excellent understanding of core Computer Science concepts. Strong knowledge of object-oriented software design and engineering principles. Experience building complex, production-grade backend systems. Understanding of databases and transactional systems. Experience with concurrency ...

We’re currently seeking a passionate Senior QA Engineer for our mobile and IoT projects for a freelance cooperation. At the moment, we have a few open positions for our ongoing projects, which are heavily focused on IoT and mobile. As a freelancer working with intent, you'll have the chance to contribute your expertise ...

... perform data validation Collaborate with diverse teams including data scientists, analysts, and IT professionals Provide thought leadership on Data Software Engineering best practices and technology trends Maintain and ensure integrity and security of data sources and platforms Perform troubleshooting, debugging, and upgrading ...

... cutting-edge methodologies. - Be an active, solution-oriented contributor within autonomous, cross-functional agile teams collaborating with Product Owners, Back-end Engineers, Front-end Engineers, Product Analysts, and Business Intelligence teams. - Demonstrate an in-depth understanding of HelloFresh’s core product and architecture, ...

... fast and building for the long haul About You - Deep knowledge of web technologies and large-scale web application architectures - Familiarity with current trends and best practices in front-end architecture, including performance, security, and usability - 3+ years of industry experience building scalable and performant ...

... Science, Software Engineering or related field (or equivalent experience). - 3+ years' experience in full-stack or equivalent development roles. - Proficiency in JavaScript/TypeScript and at least one major front-end framework (React preferred). - Back-end experience with https://jobeax.com/link/JSd7UYCSg572jJDY, Python, Java ...