Back End Developer (NodeJS) - All Levels

As a Back End Developer (NodeJS) at Capco, your main responsibilities will include designing, developing, and maintaining backend systems using Node.js, as well as collaborating closely with technical teams to define system architecture. You'll be developing RESTful APIs and GraphQL endpoints, optimizing application performance, and managing both relational and non-relational databases while ensuring data integrity and security.

To qualify for the Back End Developer (NodeJS) position at Capco, candidates should possess 3-6 years of professional experience in backend development with a strong focus on Node.js. Proficiency in JavaScript/TypeScript and experience with cloud platforms such as AWS, Google Cloud, or Azure are essential. Familiarity with containers like Docker, orchestration tools like Kubernetes, and microservices architecture will also be necessary.

In the role of Back End Developer (NodeJS) at Capco, you will primarily use JavaScript and TypeScript, along with frameworks such as Express.js and Nest.js. Additionally, you will interact with database technologies such as MongoDB, PostgreSQL, or MySQL while working on API design and implementing microservices architecture.

Capco supports career development for Back End Developers by providing opportunities for mentorship, knowledge sharing, and training. Moreover, you'll have the chance to gain hands-on experience across various projects while actively participating in code reviews, thereby enhancing your expertise and advancing your career within Capco's collaborative environment.

As a Back End Developer (NodeJS) at Capco, you will collaborate with a diverse and cross-functional team consisting of frontend developers, DevOps engineers, and QA professionals. This collaborative approach encourages innovative thinking and ensures high-quality project results while providing a supportive network for your growth.

When answering this question, focus on specific projects you've worked on, the challenges you faced, and how you utilized Node.js to resolve them. Highlight any frameworks you’ve used and emphasize how your backend development skills align with the goals of Capco.

Explain that RESTful APIs are an architectural style for designing networked applications. Describe their importance in backend development, emphasizing how they enable communication between the server and client and allow for scalable, stateless interaction, which is essential for modern web applications.

Discuss your experience with both relational and non-relational databases, detailing your approach to ensuring data integrity and security. Mention specific databases you have worked with, such as MongoDB or PostgreSQL, and how you optimize database queries for performance.

You can mention best practices like writing clean and modular code, following the DRY principle (Don't Repeat Yourself), and implementing error handling effectively. Talk about your experience with code reviews and how they contribute to maintaining code quality.

Share a specific example of a time when you had to investigate a production issue, explaining the steps you took to identify and resolve the problem. This shows your analytical skills and ability to handle pressure while ensuring high availability and reliability.

Talk about techniques you use to ensure scalability, such as designing efficient algorithms, utilizing caching strategies, and implementing microservices architecture, which allows different components of an application to scale independently as needed.

Identify the cloud platforms you’re familiar with, such as AWS or Google Cloud, and discuss any challenges you've encountered, such as managing cloud resources or security configurations. Highlight how you resolved these issues and what lessons you learned.

Discuss the fundamental differences between SQL and NoSQL databases, focusing on their structure, scalability, and use cases. SQL databases are table-based, while NoSQL databases offer flexibility in data storage, making them suitable for varied data formats.

Explain your strategies for staying current, such as following relevant blogs, participating in online courses or communities, and attending workshops or conferences. This shows your commitment to continuous learning and professional development.

Describe your understanding of DevOps and its significance in streamlining development and operations. Emphasize collaboration, CI/CD practices, and how they enhance deployment efficiency and project outcomes, showcasing your ability to work in a modern development environment.