MQTT, RabbitMQ, ClickhouseDB, PostgreSQL, NestJS, NodeJS, Redis, MongoDB, 3rd Party API Integration, Microservices, Distributed Monolith, Typescript, Javascript. S3, AWS IoT Core, EMQX, Netbird, IoT, Big Data, Realtime Analytics, OLAP

Building complex microservices that work in a correlationBuilding "API First" REST and Graphql endpoints for the SaaS projectDesigning performant, reliable, and consistent PGSQL queries for complexfinancial operationsBuilding event-driven flows by leveraging KafkaBuilding both gRPC and Kafka-compatible infrastructure libraries to follow asingle standard in different protocols in NestJS, Typescript & JavascriptCollaborating to improve system design practicesDeveloping unit tests with Jest and integration tests with PostmanBuilding/Maintaining AWS lambda functions that are triggered by eventspublished by different sources

Developing gRPC APIs for internal communication across the API Gateway

Developing highly scalable WebSocket services using Redis and RabbitMQDesigning MongoDB and PostgreSQL schemasDeveloping event-driven microservices NestJS.Developing REST APIs for web services NestJS and NodeJS.Designing and establishing CI/CD Pipeline Github ActionsDockerizing and deploying apps to EC2 instances in ECSMentoring junior developers.

Collaborating to design DB schemas in MongoDBOptimizing existing DB queries and the performance of existing logic.Improving SOA architecture by making everything centralized by leveragingsubmodules. Achieving that more manageable software with a lower cost.Developing new logic and new features REST APıs NestJS.Building payment infrastructure with stripe.Implementing many 3rd party APIs successfullyUpdating Existing CI/CI pipe AWS Codepipe and Deploying the app to EBS

Getting in touch with clients closely.Improving and proposing new solutions according to client requirements.Designing PostgreSQL and MongoDB schemasSolving unique problems of local businesses by building desktop client appswith C# (UWP) and connected to Node.js web REST APIs.Building accounting and business/operation tracking software.