I offer remote, part-time or project-based `back-end development` (e.g. API and microservices) based on the latest technologies like `Javascript/Typescript`, `NodeJS`, `GraphQL`, `gRPC` and `Ethereum BlockChain`, `ElasticSearch`, `etcd` and `SQL/NoSQL`. My code is performant, clean, documented and long-term sustainable. I also have experience with web-server administration, AWS Amazon, Google Cloud, Heroku, horizontal scaling, IPC, Docker and Kubernetes.