Junior Backend Developer (Node.js)

As a Junior Backend Developer at our company, your responsibilities will include writing high-quality JavaScript and TypeScript code, participating in technical discussions to enhance our product, and engaging in code reviews to maintain coding standards. You'll also be actively involved in documenting your code, supporting peers in development, and translating business requirements into technical solutions. It's a role that emphasizes learning and collaboration within the team.

To qualify for the Junior Backend Developer position at our company, you should have at least 6 months of commercial experience with Node.js and a basic understanding of JavaScript concepts (ES 2018+). Familiarity with a Node.js backend framework such as Express.js or NestJS is preferred. Soft skills such as effective communication in English and Polish are also essential for cooperating with both American clients and your team members.

In your role as a Junior Backend Developer, you’ll work with several cutting-edge tools including Apple MacBook Pro, Slack for communication, GitHub for version control, Jira for project management, and Coda and Miro for collaborative documentation. This tech stack is designed to streamline your workflow and facilitate smooth interaction both with your team and our clients.

As a Junior Backend Developer, you'll participate in exciting projects, particularly with startups aiming for MVPs. You'll engage with diverse industries such as FinTech, SportsTech, and MedTech. Each project presents unique challenges that will enhance your skills and expose you to various aspects of backend development while allowing you to contribute meaningfully to clients’ success.

Absolutely! We encourage ongoing professional development for our Junior Backend Developers. You’ll have access to a training budget of PLN 6,000 per year, as well as quarterly allowances for health insurance and sports activities. Additionally, you can benefit from mentoring sessions and dedicated self-development time, ensuring you can grow your skills and advance your career.

Node.js is a JavaScript runtime built on Chrome’s V8 JavaScript engine that allows developers to build scalable network applications. It's event-driven and asynchronous, making it ideal for I/O-heavy tasks. When answering this question, highlight the advantages of using Node.js, such as its speed, ease of use, and the large ecosystem of libraries.

Every backend developer should have a good grasp of concepts like closures, asynchronous programming (callbacks, promises, async/await), and the prototype inheritance model. When asked this question, it's beneficial to provide examples and explain how these concepts can impact performance and code organization.

In a Node.js application, error handling is crucial for maintaining application stability. You should implement try/catch blocks, use async/await for asynchronous code, and consider using error-handling middleware in Express.js. Be prepared to explain how you would structure your error logging and reporting to improve debugging and user experience.

SOLID principles are essential for creating maintainable and scalable software. They promote separation of concerns, reduce dependencies, and ensure that classes are reusable. When answering this question, it's effective to provide real-world examples of how adhering to these principles can improve code quality and facilitate team collaboration.

An ORM (Object-Relational Mapping) tool helps bridge the gap between relational databases and object-oriented programming languages. In your projects, you could use an ORM like Sequelize or Prisma to simplify database interactions by allowing you to work with database records as JavaScript objects rather than writing raw SQL queries. Be ready to demonstrate an understanding of setting it up and its advantages.

Agile is a project management methodology that emphasizes flexibility and customer collaboration. Scrum is a specific Agile framework that organizes work in sprints and encourages regular feedback loops. You should explain how you would apply these methodologies in your work, focusing on iterative development and continual improvement.

To ensure code maintainability and scalability, you would focus on writing clean, readable code with clear comments and documentation. Utilizing design patterns and keeping functions small and focused can also help. Discussing code reviews and collaborative practices will show your comprehension of team-oriented development.

Effective time management strategies include setting clear priorities, breaking projects into manageable chunks, and using tools like Jira for tracking progress. Utilizing the Pomodoro technique to maintain focus and scheduling regular check-ins with your team can also enhance productivity and facilitate timely project delivery.

Keeping up with tech trends involves following key industry blogs, podcasts, and participating in online forums or communities like those on GitHub or Stack Overflow. You could also mention attending workshops and seeking mentorship to maximize your learning potential and professional growth.

In case of a significant challenge, I would first prioritize open communication with my team and stakeholders to assess the situation. Problem-solving would involve brainstorming potential solutions collaboratively, adjusting timelines if necessary, and when applicable, seeking advice from more experienced colleagues to navigate the challenge effectively.