CloudSEK is an AI‑driven cybersecurity firm that empowers organisations to stay ahead of digital threats. Leveraging predictive threat intelligence, machine‑learning models and continuous security monitoring, the company builds solutions that can detect, analyse and remediate vulnerabilities before they are exploited. Headquartered in Bengaluru, CloudSEK serves a global clientele ranging from startups to Fortune‑500 enterprises, and has earned recognition for its innovative approach to cyber‑defence. The Backend Software Development Engineer (SDE) Internship is a hands‑on role designed for fresh engineering talent who are passionate about building robust, scalable services that power security‑centric products. As an intern, you will work closely with senior engineers, product managers and frontend teams to design, develop, and optimise APIs and data pipelines that ingest threat feeds, store massive telemetry data, and deliver actionable insights to customers. The experience will expose you to real‑world challenges in high‑throughput systems, cloud environments, and the evolving landscape of cybersecurity. **Key Responsibilities** 1. Design, implement and maintain RESTful backend services and micro‑services. 2. Write clean, modular, and well‑documented code following industry best practices. 3. Develop and optimise database schemas, queries and data models using PostgreSQL/MySQL/MongoDB. 4. Debug production issues, profile performance bottlenecks and propose enhancements. 5. Collaborate with frontend developers to define API contracts and ensure seamless integration. 6. Participate in code reviews, provide constructive feedback and adopt peer‑review suggestions. 7. Create unit tests, integration tests and contribute to the overall QA strategy. 8. Integrate third‑party services, SDKs and external APIs as required by product features. 9. Assist in containerising services with Docker and deploying them on cloud platforms. 10. Stay updated with cybersecurity trends and contribute ideas for new security‑focused features. **Tech Stack**: Python / Go / Java / Node.js, PostgreSQL, MySQL, MongoDB, Git, Docker, Linux, basic AWS/GCP services, REST/HTTP, data structures & algorithms. **Growth Path**: Successful interns are often offered full‑time SDE positions, with clear progression from Junior Engineer to Senior Engineer, and eventually to Technical Lead or Architecture roles. CloudSEK encourages continuous learning through internal tech talks, mentorship programmes, and sponsorship for certifications in cloud and security domains. **Why Join CloudSEK?** The internship offers exposure to cutting‑edge cybersecurity technology, a culture of rapid innovation, and the chance to contribute to products that protect critical digital infrastructure worldwide. You will be part of a collaborative, merit‑based environment where ideas are valued, and early‑career engineers are given ownership of meaningful features from day one.