2120 warsaw English-speaking jobs in Warsaw

React Developer needed for developing and maintaining modern web applications. Requires 4+ years of commercial React experience, strong TypeScript skills, and knowledge of state management solutions (Redux Toolkit, Zustand, Jotai, etc.). Must be proficient in testing tools (Jest, React Testing Library, Vitest), Git, and Clean Code principles.

Full-Stack Developer to design, develop, and maintain applications using Java, React, and related technologies. Requires 3+ years of experience with Java, React, TypeScript, REST APIs, SQL databases, Docker, and Kubernetes.

Experienced IBM BPM Engineer sought to design, implement, and maintain business process automation solutions for international clients. Minimum 2 years of experience required.

Salesforce Manual Tester needed for comprehensive testing of Salesforce solutions. Experience with Salesforce configuration testing, API testing, and SQL is required. Collaborate with development and business teams to ensure high-quality implementations.

Freelance AI Engineer needed to integrate AI features into existing Node.js, Ruby, Python, React, or React Native applications. Experience with LLM APIs, vector databases, and AI tooling (LangChain, LlamaIndex, Vercel AI SDK) required.

Experienced Frontend Engineer (React) sought for long-term B2B contract. Contribute to modern web applications with strong emphasis on performance, accessibility, and design consistency. Must have strong React and TypeScript skills, experience with design systems (Nexus preferred), and familiarity with testing tools.

Leads implementation and support of the 1-2-1 application, translating business needs into technical solutions across CRM, loyalty, and connected touchpoints. Ensures application integration with CRM platforms and other consumer touchpoints.

Mid/Senior React Developer needed for MUI 9 migration project. Build a central SSR-compatible component library using MUI 9, Next.js, and Storybook. Expert-level React knowledge, MUI 9 experience, and SSR/CSR understanding required. At least 5 years of relevant frontend experience and component library experience necessary.

Senior Business Analyst to analyze and optimize Supply Chain processes, design solutions, and collaborate with clients. Requires 8-10 years of experience in business analysis, consulting, or process optimization with a focus on Supply Chain.

AI Architect needed to design and build LLM-based systems for enterprise clients. Requires experience with LangChain, LangGraph, vector databases, and cloud AI services. Must be able to translate business requirements into technical designs and communicate effectively with clients and engineers.

Build LLM-powered applications and RAG systems for international clients in banking, insurance, and telco. Design and implement AI agents, integrate LLMs, and build data ingestion pipelines. Solid Python skills, RAG experience, and familiarity with agent frameworks and vector databases required.

MLOps Engineer needed to design, build, and maintain CI/CD pipelines for ML model training, evaluation, and deployment. Manage model lifecycle end-to-end, including infrastructure setup, monitoring, and alerting. Strong Python skills, experience with MLOps tooling (MLflow, Kubeflow, Airflow), Docker, Kubernetes, and cloud platforms (AWS, Azure, or GCP) required.

Senior Manual Tester for mobile and web applications. 8+ years QA experience in Agile teams required. Experience with Postman, Swagger, qTest, Jira, Confluence, and ISTQB certification.

Supports the development of analytical solutions, creating reports, analyses, and visualizations. Participates in analytical consulting, presenting insights and recommendations. Automates analytical processes and builds solutions using tools like Oracle, Google BigQuery, and Airflow. Requires English proficiency (B2+), advanced SQL knowledge, and experience working with large datasets.

Office: Powiśle, Warsaw. Flexible working hours. International business trips for volunteers.

Office: Powiśle, Warsaw. Flexible working hours. International business trips for volunteers.

Flutter App Developer with 5+ years of experience, including 3+ years with Flutter, is sought for a remote role. Must be proficient in Riverpod and have a history of successful app releases.

Lead Data Manager for clinical projects, ensuring deliverables are completed on time and in accordance with protocols and GCP standards. Requires a university degree or certification in a related field, fluency in English, and 2+ years of clinical data management experience.

Senior Fullstack Developer needed for freelance work. Expertise in Ruby on Rails and TypeScript required. Develop dashboards, UIs, and documentation platforms. Must have strong communication and problem-solving skills.

Lead and support Windows Server, Linux, and AIX environments, ensuring stability, performance, and security. Manage full server lifecycle activities, including deployment, patching, upgrades, and decommissioning. Oversee and optimize virtualization platforms (VMware, Nutanix, Hyper-V).