Candidate should know about these technologies - "Good knowledge of Node Frameworks i.e Express, NestJs Proficiency in Restful APIs and API Communications,Grasp of Async Programming e.g nature of non- blocking i/o etc,Working knowledge of Authn/Authz (OAuth, System to the system, etc) Able to work with client/server stubs,Error handling skills Prior experience with Caching layers e.g. Redis, Swagger, Open API Specs. Able to work with Databases."