Requirements 4+ years of experience in Node.js environment; Design patterns ( Dependency Injection Factory Builder Observer Facade); Solution architecture ( Scalability Event-Driven); Testing with Jasmine or similar; Mysql/Redis/Memcached; Kafka/RabbitMQ; AWS ( API gateway Lambda ECS Aurora Cloudwatch); Flexible communicative a real team player; Able to work on several simultaneous projects and to adapt to a fast-evolving environment .