1320 javascript English-speaking jobs in Warsaw

We're looking for an experienced Lead Software Engineer to join Klarna's engineering team. You'll play a critical role in building scalable, reliable systems and driving technical excellence across our products. This position combines hands‐on coding with leadership, mentorship, and strategic decision‐making.

2025 col-wide Job Description: Location: Warsaw (hybrid work: 2-3 days in the office) Rate: 220 - 255 PLN per hour Cooperation model: B2B or Employment Contract Duration: long-term agreement Recruitment process: 1 timed Abstract and Logical Reasoning Test (up to 15 minutes); 1 short interview (up to 30 minutes) Do you want to play a key role in revolutionizing the future of finance?

Employer: Klarna Location: Warsaw (hybrid work: 2-3 days in the office) Rate: 220 - 255 PLN per hour Cooperation model: B2B or Employment Contract Start date: ASAP Duration: long-term agreement Recruitment process: 1 timed Abstract and Logical Reasoning Test (up to 15 minutes); 1 short interview (up to 30 minutes) Do you want to play a key role in revolutionizing the future of finance?

product, design, and infrastructure teams to deliver integrated, high-impact features ,[] Requirements: JavaScript

We are looking for a motivated and proactive JavaScript Developer to join our Support & Hands History ... At least 1.5 years of commercial experience in Frontend / JavaScript development; Hands‐on experience

Requirements 4 years of experience and profound expertise in Vanilla JavaScript, DOM APIs, and the JavaScript ... We are looking for an experienced JavaScript Engineer to take ownership of the core engine of one of ... Join us to work on our Customer’s native JavaScript library — the driving force behind analyzing web

Overview You posses: Good knowledge of JavaScript (ES5, ES6, ES7) and JavaScript frameworks is a plus ... Requirements Good knowledge of JavaScript (ES5, ES6, ES7) and JavaScript frameworks is a plus (especially

B2B Start date: ASAP Recruitment process: 2 - 3 online interviews Technology stack: React, jQuery, Javascript ... Your skills and experiences: -> 4 years of experience with React and the JavaScript ecosystem (Webpack

Technical interview Online logic test Cultural fit interview Requirements: Minimum 5 years of experience in JavaScript

Good knowledge of HTML5, CSS3, and modern JavaScript (ES6). ... Responsibilities Front-End: Build and maintain responsive user interfaces with React.js, Redux, and modern JavaScript

Requirements Front-End Strong experience with React.js , Redux , React Hooks , HTML5 , CSS3 , and JavaScript ... Front-End Development: Build user-friendly, responsive web interfaces using React.js , Redux , and modern JavaScript

About: We are seeking a Senior Technical Manager with deep expertise in modern fullstack JavaScript technologies ... or a related field. ● 8 years of software development experience, with a strong focus on fullstack JavaScript ... dynamic routing - GraphQL APIs and tools like Apollo Server/Client ● Strong knowledge of HTML5, CSS3, JavaScript ... the last 5 years. ● 3 years in a technical leadership or managerial role. ● Certifications in cloud, JavaScript ... Experience: Technical Expertise: ● 10 years in software development with significant experience in fullstack JavaScript

Certifications in cloud, JavaScript, or architecture. ... Requirements: JavaScript, React, Node.js, Team management ... About: We are seeking a Senior Technical Manager with deep expertise in modern fullstack JavaScript technologies ... Certifications in cloud, JavaScript, or architecture. ,[Technical Leadership: Guide architecture and ... Technical Expertise: 10+ years in software development with significant experience in fullstack JavaScript

logging, and testing Requirements 5+ years of experience in fullstack web development Deep knowledge of JavaScript

Are you ready to take your fullstack JavaScript skills to the next level by building modern, high-impact ... If you're a skilled JavaScript developer ready to lead development across both web and mobile platforms ... documentation, and technical improvement initiatives Requirements 5+ years of professional experience with JavaScript

experience.Experience with software development in one or more programming languages (e.g., Python, C, C++, Java, JavaScript

experience.Experience with software development in one or more programming languages (e.g., Python, C, C++, Java, JavaScript

experience.Experience with software development in one or more programming languages (e.g., Python, C, C++, Java, JavaScript

technologies-expected : Java C C++ Python Go JavaScript technologies-optional : TensorFlow Kubernetes ... code in one or more general purpose programming languages (e.g., Java, C, C++, Python, Shell, Go or JavaScript

Kubernetes Engine Experience Miejsce pracy: Warszawa Technologies we use Expected Python Go C C++ Java JavaScript ... experience with software development in one or more programming languages (e.g., Python, Go, C, C++, Java, JavaScript