- Languages
- Java (primary), JavaScript, TypeScript, Embedded C
- Backend
- Spring Framework, JHipster, GraphQL, gRPC, REST, WebSocket, WebRTC, RabbitMQ, Kafka, Redis, concurrency and multithreading
- Data
- MSSQL, PostgreSQL, MySQL, MongoDB, Hibernate, MongoTemplate
- Cloud and DevOps
- Azure, AWS, DigitalOcean, Docker, Nginx, Linux, Git, CI/CD pipelines
- Embedded firmware
- Embedded C, C++, bare metal, FreeRTOS, STM32 (ARM Cortex-M), STM8S, ESP32, ESP8266, Atmel AVR, PIC16, Arduino, MODBUS/RS485, I2C, UART, MQTT, display drivers, low-power optimisation
- Frontend
- React, HTML, CSS, Bootstrap
- Tools
- Gradle, Maven, Postman, Swagger/OpenAPI, SonarQube, Azure Boards, Jira, Agile/Scrum
- Spoken
- Bengali (native), English (full professional)