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## Role overview We seek a Principal Full Stack Developer with 10+ years' experience in .NET and React to build scalable web applications and APIs. The role focuses on clean architecture, Azure cloud integration, and modern development practices in Amsterdam. ## Responsibilities - Design and implement full-stack solutions using React, TypeScript, and .NET - Architect scalable cloud-native applications on Azure - Collaborate with cross-functional teams to deliver high-performance systems - Maintain and optimize existing codebases - Mentor junior developers and enforce best practices

## Role overview JavaScript / Node.js Developer needed for a 5-month contract starting November 16, 2025, in Amsterdam. The role involves working with a leading organization on backend development using JavaScript and Node.js. The position offers potential for contract extension and requires English proficiency. Candidates may apply as ZZP or Detachering. ## Responsibilities - Develop and maintain backend systems using JavaScript/Node.js - Collaborate with cross-functional teams to implement CI/CD pipelines - Optimize application performance and scalability - Follow best practices for secure and efficient code ## Requirements - 2+ years of JavaScript/Node.js development experience - Strong understanding of CI/CD workflows - Proficient in English (written/verbal communication) ## Benefits - Opportunity to work on a long-term project with a top Amsterdam organization - Potential for contract extension based on performance

## Role overview As an AI/Python Developer at ITproposal B.V., you'll design and implement cutting-edge conversational AI systems using Large Language Models (LLMs). You'll work in Eindhoven on projects that integrate advanced AI technologies like GPT, Claude, and open-source models into production environments. This role requires strong Python development skills and a passion for AI innovation. You'll collaborate with cross-functional teams to create next-generation chatbot solutions that push the boundaries of natural language processing and machine learning.

## Role overview Seeking a seasoned Full Stack Developer with expertise in React, Node.js, and AWS to lead technical initiatives and drive complex projects. This 6-month contract role requires hands-on experience building scalable web applications and collaborating in agile environments. ## Responsibilities - Design and implement full-stack solutions using React, Node.js, and AWS - Collaborate with cross-functional teams to deliver high-quality software - Optimize application performance and maintain technical documentation - Mentor junior developers and contribute to architecture decisions - Integrate third-party APIs and ensure system scalability ## Requirements - 4+ years of professional full-stack development experience - Strong proficiency in React and Node.js frameworks - Hands-on AWS cloud experience (EC2, S3, Lambda, etc.) - Proven track record of leading technical projects - Excellent problem-solving and communication skills ## Benefits - Competitive daily rate for contract work - Opportunity to work on enterprise-level applications - Flexible working hours within onsite schedule - Professional development budget - Collaborative team environment

## Role overview Develop and maintain Python-based applications for credit risk modeling and data-driven solutions. Implement risk models using modern software engineering practices and cloud infrastructure. Collaborate with cross-functional teams to optimize data pipelines and improve analytical accuracy. ## Key requirements - 8+ years of professional Python development experience - Strong SQL skills with database optimization - Knowledge of credit risk concepts and financial data modeling - Experience with cloud platforms (AWS/Azure/GCP) - Proven ability to deliver scalable backend solutions

## Role overview Design and build scalable web applications and APIs with a focus on API integrations, data processing, and cloud-based deployments. Work with modern Python frameworks and DevOps practices to deliver robust solutions. This 6-month contract position requires close collaboration with cross-functional teams to implement end-to-end full-stack solutions. Ideal candidates will have experience in cloud platforms and deployment automation.