I write and teach about Java, Spring Boot, system design, distributed systems, databases, Kafka, cloud infrastructure, and career growth — helping Bengali developers become industry-ready.
Learning Path
From Java fundamentals to Spring Boot, databases, queues, scaling, and production engineering.
Courses
A Bengali-first backend engineering roadmap designed to take learners from Java fundamentals to production-grade backend systems.
Beginner
A beginner-friendly course for learning Java, object-oriented programming, problem solving, and the foundation needed for backend development.
Intermediate
A practical backend development course focused on Java, Spring Boot, REST APIs, databases, authentication, testing, deployment, and industry preparation.
Advanced
An advanced backend engineering course covering databases, queues, caching, scaling, distributed systems, observability, reliability, and production architecture.
Writing
Practical notes, guides, and lessons on Java, Spring Boot, distributed systems, databases, career growth, and product building.
A practical introduction to Apache Kafka, event streaming, producers, consumers, topics, partitions, and backend use cases.
A developer-friendly guide to ClickHouse, columnar storage, analytics workloads, and when to use it in backend systems.
A practical explanation of Cassandra, partition keys, wide-column modeling, high availability, and distributed database trade-offs.
Journey
A career shaped by real product work, distributed systems, global engineering teams, and the desire to help Bengali developers grow.
Pathao
Worked on backend systems for high-growth consumer products across ride-sharing, food delivery, and location-based services.
Shopemaa
Co-founded and built an ecommerce SaaS platform, learning the engineering and business realities of building a product from scratch.
Twilio
Worked on messaging infrastructure and backend services supporting large-scale communication systems.
NSUNA
Worked on hospitality platform systems involving restaurants, hotel management, reservations, ordering, data, and infrastructure.
European Engineering Teams
Continued working with international engineering teams on backend systems, platform architecture, reliability, and production-grade services.
Sakib Ninja / Learn Sakib Ninja
Turning years of backend engineering and product-building experience into practical Bengali courses for students and engineers.
Expertise
My content is centered around practical backend engineering skills that matter in real production systems.
Designing and building backend services, REST APIs, internal APIs, service boundaries, authentication, authorization, validation, and production-ready application structure.
Building systems that communicate through events, queues, streams, workflows, and service-to-service interactions while handling reliability and scale.
Working with relational, NoSQL, search, cache, and analytical databases to support real product and platform requirements.
Deploying and operating backend services using containers, cloud platforms, CI/CD pipelines, infrastructure automation, and production environments.
Designing systems that are easier to monitor, debug, operate, and recover when something goes wrong in production.
Turning business requirements into usable products by balancing architecture, delivery speed, maintainability, user experience, and product impact.
Projects
Alongside engineering work and teaching, I build products that explore SaaS, ecommerce, QR technology, education, and practical business workflows.
Dynamic QR codes, short links, campaigns, analytics, and page builder for growth-focused businesses.
QRCentraal is a dynamic QR and campaign platform built for businesses that want to turn scans into measurable actions. It includes QR projects, short links, campaigns, analytics, team accounts, and a OnePage page builder.
An ecommerce SaaS platform built to help businesses launch and manage online stores.
Shopemaa was a founder journey where I worked on an ecommerce platform covering storefronts, orders, payments, customer profiles, API keys, custom domains, and platform-level product building.
Practical backend engineering courses for Bengali developers.
Learn Sakib Ninja is the course platform where I am building structured backend engineering courses in Bengali, starting from Java and OOP and moving toward backend development, databases, system design, and distributed systems.