Freelance Backend Platform Engineer (Node.js / TypeScript / AWS)

🚀 Freelance Backend Platform Engineer (Node.js / TypeScript / AWS) 📍 Location: Amsterdam, Netherlands 🏢 Working Model: Hybrid (2 days onsite per week) 🕒 Contract: 12-Month Freelance Contract ⏰ Hours: 40 hours per week 💰 Rate: Up to €105 per hour + VAT We're looking for an experienced Backend Platform Engineer to join a high-performing engineering team building and scaling a next-generation platform responsible for processing large volumes of business-critical data. This is an opportunity to work on complex distributed systems, cloud-native architectures, and highly scalable backend services. What You'll Be Doing Design, build, test, deploy, and operate scalable backend services end-to-end. Develop robust APIs and platform capabilities using Node.js and TypeScript. Build and maintain cloud-native solutions leveraging AWS Lambda, S3, DynamoDB, queues, workers, and orchestration services. Drive engineering excellence through clean, maintainable, and testable code. Implement monitoring, alerting, observability, SLIs, SLOs, and production support processes.Design resilient systems using retries, idempotency, dead-letter queues, graceful degradation, and fault-tolerant patterns. Contribute to architecture discussions and system design decisions across a modern platform engineering environment.Contribute tand system design decisions across a modern platform engineering environment. Work within a collaborative multi-disciplinary engineering team focused on accelerating delivery and innovation. What We're Looking For ✅ Strong commercial experience with Node.js and TypeScript. ✅ Experience building backend APIs, microservices, and distributed systems. ✅ Hands-on expertise with: AWS LambdaDynamoDBS3Event-driven architecturesQueues and workersCI/CD pipelinesMonitoring and observability tooling ✅ Proven ability to independently own software delivery from design through production. ✅ Strong testing mindset with experience in unit, integration, and contract testing. ✅ Experience working with AI-assisted development tools, coding agents, or spec-driven development approaches is highly advantageous. Nice to Have AWS Durable Lambda experienceFeature flags and experimentation platformsAPI versioning and backward compatibilityOpenSpec or similar agent-programming frameworks Interested? If you're passionate about building scalable backend platforms, cloud-native solutions, and high-quality software in a modern engineering environment, we'd love to hear from you. 📩 Apply now or contact me directly for a confidential discussion. #BackendEngineer #SoftwareEngineer #NodeJS #TypeScript #AWS #Lambda #PlatformEngineering #DistributedSystems #Microservices #CloudEngineering #AmsterdamJobs #ContractJobs #FreelanceDeveloper #HiringNow